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Home My WebLink About20201838.tiffSTATE OF COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St , Room 215 Denver, Colorado 80203 Phone (303) 866-3567 FAX (303) 832-8106 CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM COLORADO DIVISION OF RECLAMATION MINING —&— SAFETY CHECK ONE ❑ There is a File Number Already Assigned to this Operation Permit # M - (Please reference the file number currently assigned to this operation) n New Application (Rule 1 4 5) ❑ _ Amendment Application (Rule 1 10) Conversion Application (Rule 1 11) f Permit # M - - (provide for Amendments and Conversions of existing permits) The application for a Construction Materials Regular 112 Operation Reclamation Permit contains three major parts (1) the application form, (2) Exhibits A -S, Addendum 1, any sections of Exhibit 6 5 (Geotechnical Stability Exhibit, and (3) the application fee When you submit your application, be sure to include one (1) complete signed and notarized ORIGINAL and one (1) copy of the completed application form, two (2) copies of Exhibits A -S, Addendum 1, appropriate sections of 6 5 (Geotechnical Stability Exhibit, and a check for the application fee described under Section (4) below Exhibits should NOT be bound or in a 3 -ring binder, maps should be folded to 8 1/2" X 11" or 8 1/2" X 14" size To expedite processing, please provide the information in the format and order described in this form GENERAL OPERATION INFORMATION Type or print clearly, in the space provided, ALL information requested below 1 Applicant/operator or company name (name to be used on permit) Coulson Excavating Company, Inc 1 1 Type of organization (corporation, partnership, etc ) Corporation 2 Operation name (pit, mine or site name) 3 Permitted acreage (new or existing site) 3 1 Change in acreage (+) 3 2 Total acreage in Permit area 4 Fees 41 42 44 45 Amen Aggregate Resource New Application New Quarry Application Amendment Fee Conversion to 112 operation (set by statute) 5 Primary commoditie(s) to be mined Sand 5 1 Incidental commoditie(s) to be mined 1 3 / lbs/Tons/yr 4 Gravel 150 98 150 98 $2,696 00 $3,342 00 $2,229 00 $2,696 00 lbs/Tons/yr 2 / / lbs/Tons/yr 5 / permitted acres acres acres application fee quarry application amendment fee conversion fee lbs/Tons/yr lbs/Tons/yr 5 2 Anticipated end use of primary commoditie(s) to be mined Construction 5 3 Anticipated end use of incidental commoditie(s) to be mined - 2 - 6 Name of owner of subsurface nmhts of affected land See Exhibit O If 2 or more owners, "refer to Exhibit O" 7 Name of owner of surface of affected land Coulson Excavating Co , Inc, Crossant Family Farm LLC 8 Tyne of minim oaeration Surface EL Underground 9 Location Information The center of the area where the majority of mining will occur COUNTv Weld PRINCIPAL MERIDIAN (check one) o • l 6th (Colorado) la 10th (New Mexico) ® Ute SECTION (write number) S 19 TOWNSHIP (write number and check direction) T 5 D North ® South RANGE (write number and check direction) R 67 El East 12] West QUARTER SECTION (check one) Ill _® ® E SW QUARTER/QUARTER SECTION (check one) ® NE NW SE u SW GENERAL DESCRIPTION (the number of miles and direction from the nearest town and the approximate elevation) -3 0 miles North East of Johnstown Elevation —4,800 ft 10 Pnmary Mine Entrance Location (report in either Latitude/Longitude OR UTM) Latitude/Longitude Example (N) 39° 44' 12 98" (W) 104° 59' 3 87" Latitude (N) deg mm sec (2 decimal places) Longitude (W) deg mm sec (2 decimal places) OR Example (N) 39 73691° (W) -104 98449° Latitude (N) (5 decimal places) Longitude(W) (5 decimal places) OR Universal Tranverse Mercator (UTMI Example 201336 3 E NAD27 Zone 13 4398351 2 N UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Zone 13 Fasting 504667 57450 Northing4469965 03987 -3- 11 Correspondence Information APPLICANT/OPERATOR (name, address, and phone of name to be used on permit) Contact's Name Ken Coulson Title President Company Name Coulson Excavating Company, Inc Street/P 0 Box 3609 North County Road 13 P O Box City Loveland State Colorado Zip Code 80538 Telephone Number (970 ) . 667-2178 Fax Number (970 ) _ 667-2193 PERMITTING CONTACT (if different from applicant/operator above) Contact's Name Peter Wayland Title President Company Name Weiland, Inc Street/P 0 Box P 0 Box 18087 CityBoulder State Colorado Zip Code 80308 Telephone Number (303 _ 443-9521 Fax Number ( 1 - INSPECTION CONTACT Contact's Name Ken Coulson Title President Company Name Coulson Excavating Company, Inc Street/P 0 Box 3609 North County Road 13 P o Box City Loveland State Colorado zip Code 80538 Telephone Number (970 ) _ 667-2178 Fax Number (970 ) _ 667-2193 CC STATE OR FEDERAL LANDOWNER (if any) Agency Street City State Zip Code Telephone Number ( ) - CC STATE OR FEDERAL LANDOWNER (if any) Agency Street City State Zip Code Telephone Number ( ) - -4- 12 Prima future (Post -mining) land use (check one) Cropland(CR) jJ Pastureland(PL) 11 Rangeland(RL) El Forestry(FR) flResidential(RS) n Recreation(RC) riDeveloped Water Resources(WR) 13 Pnmary present land use (check one FL Cropland(CR) � Pastureland(PL) fa Rangeland(RL) Forestry(FR) Residential(RS)FR_ _E3 Recreation(RC) Developed Wateresources Resources(WR) ( ) F General Agnculture(GA) -F Wildlife Habitat(WL) Industnal/Commercial(IC) tJSolid Waste Disposal(WD) HGeneral Agnculture(GA) Wildlife Habitat(WL) i1Industrial/Commercial(IC) 14 Method of Mining Bnefly explain mining method (e g truck/shovel) Excavator - Haul Truck 15 On Site Processing 11 Crushing/Screening 13 1 Briefly explain mining method (e g truck/shovel) Crushers, Screens, Conveyors List any designated chemicals or acid -producing matenals to be used or stored within permit area Hot Mix Asphalt, Fuels 16 Description of Amendment or Conversion If you are amending or converting an existing operation, provide a brief narrative descnbing the proposed change(s) 5 Maps and Exhibits: Two (2) complete, unbound application packages must be submitted. One complete application package consists of a signed application form and the set of maps and exhibits referenced below as Exhibits A -S, Addendum 1, and the Geotechnical Stability Exhibit. Each exhibit within the application must be presented as a separate section. Begin each exhibit on a new page. Pages should be numbered consecutively for ease of reference. If separate documents are used as appendices, please reference these by name in the exhibit. With each of the two (2) signed application forms, you must submit a corresponding set of the maps and exhibits as described in the following references to Rule 6.4, 6.5, and 1.6.2(1 )(b): EXHIBIT A EXHIBIT B EXHIBIT C EXHIBIT D EXHIBIT E EXHIBIT F EXHIBIT G EXHIBIT H EXHIBIT I EXHIBITJ EXHIBIT K EXHIBIT L EXHIBIT M EXHIBIT N EXHIBIT O EXHIBIT P EXHIBIT Q EXHIBIT R EXHIBIT S Rule 1.6.2(1)(b) Rule 6.5 Legal Description Index Map Pre -Mining and Mining Plan Map(s) of Affected Lands Mining Plan Reclamation Plan Reclamation Plan Map Water Information Wildlife Information Soils Information Vegetation Information Climate Information Reclamation Costs Other Permits and Licenses Source of Legal Right -To -Enter Owners of Record of Affected Land (Surface Area) and Owners of Substance to be Mined Municipalities Within Two Miles Proof of Mailing of Notices to County Commissioners and Conservation District Proof of Filing with County Clerk or Recorder Permanent Man -Made Structures ADDENDUM 1 - Notice Requirements (sample enclosed) Geotechnical Stability Exhibit (any required sections) The instructions for preparing Exhibits A -S, Addendum 1, and Geotechnical Stability Exhibit are specified under Rule 6.4 and 6.5 and Rule 1.6.2(1)(b) of the Rules and Regulations. If you have any questions on preparing the Exhibits or content of the information required, or would like to schedule a pre -application meeting you may contact the Office at 303-866-3567. Responsibilities as a Permittee: Upon application approval and permit issuance, this application becomes a legally binding document. Therefore, there are a number of important requirements which you, as a permittee, should fully understand. These requirements are listed below. Please read and initial each requirement, in the space provided, to acknowledge that you understand your obligations. If you do no nderstand these obligations then please contact this Office for a full explanation. 1. Your obligation to reclaim the site is not limited to the amount of the financial warranty. You assume legal liability for all reasonable expenses which the Board or the Office may incur to reclaim the affected lands associated with your mining operation in the event your permit is revoked and financial warranty is forfeited; Itc r� K2, 2. The Board may suspend or revoke this permit, or assess a civil penalty, upon a finding that the permittee violated the terms or conditions of this permit, the Act, the Mineral Rules and Regulations, or that information contained in the application or your permit misrepresent important material facts; 3. If your mining and reclamation operations affect areas beyond the boundaries of an approved permit boundary, substantial civil penalties, to you as permittee can result; 4. Any modification to the approved mining and reclamation plan from those described in your approved application requires you to submit a permit modification and obtain approval from the Board or Office; 5. It is your responsibility to notify the Office of any changes in your address or phone number; 6. Upon permit issuance and prior to beginning on -site mining activity, you must post a sign at the entrance of the mine site, which shall be clearly visible from the access road, with the following information (Rule 3.1.12): a. the name of the operator; b. a statement that a reclamation permit for the operation has been issued by the Colorado Mined Land Reclamation Board; and, c. the permit number. 7. The boundaries of the permit boundary area must be marked by monuments or other markers that are clearly visible and adequate to delineate such boundaries prior to site disturbance. 8. It is a provision of this permit that the operations will be conducted in accordance with the terms and conditions listed in your application, as well as with the provisions of the Act and the Construction Material Rules and Regulations in effect at the time the permit is issued. 9. Annually, on the anniversary date of permit issuance, you must submit an annual fee as specified by Statute, and an annual report which includes a map describing the acreage affected and the acreage reclaimed to date (if there are changes from the previous year), any monitoring required by the Reclamation Plan to be submitted annually on the anniversary date of the permit approval. Annual fees are for the previous year a permit is held. For example, a permit with the anniversary date of July 1, 1995, the annual fee is for the period of July 1, 1994 through June 30, 1995. Failure to submit your annual fee and report by the permit anniversary date may result in a civil penalty, revocation of your permit, and forfeiture of your financial warranty. It is your responsibility, as the permittee, to continue to pay your annual fee to the Office until the Board releases you from your total reclamation responsibility. 10. For joint venture/partnership operators: the signing representative is authorized to sign this document and a power of attorney (provided by the partner(s)) authorizing the signature of the representative is attached to this application. -7 - NOTE TO COMMENTORS/OBJECTORS It is likely there will be additions, changes, and deletions to this document prior to final decision by the Office Therefore, if you have any comments or concerns you must contact the applicant or the Office prior to the decision date so that you will know what changes may have been made to the application document The Office is not allowed to consider comments, unless they are written, and received prior to the end of the public comment period You should contact the applicant for the final date of the public comment period If you have questions about the Mined Land Reclamation Board and Office's review and decision or appeals process, you may contact the Office at (303) 866-3567 8 Certification: As an authorized representative of the applicant, I hereby certify that the operation described has met the minimum requirements of the following terms and conditions: 1. To the best of my knowledge, all significant, valuable and permanent man-made structure(s) in existence at the time this application is filed, and located within 200 feet of the proposed affected area have been identified in this application (Section 34-32.5-115(4)(e), C.R.S.). 2. No mining operation will be located on lands where such operations are prohibited by law (Section 34-32.5-115(4)(f), C.R.S.; 3. As the applicant/operator, I do not have any extraction/exploration operations in the State of Colorado currently in violation of the provisions of the Colorado Land Reclamation Act for the Extraction of Construction Materials (Section 34-32.5-120, C.R.S.) as determined through a Board finding. 4. I understand that statements in the application are being made under penalty of perjury and that false statements made herein are punishable as a Class 1 misdemeanor pursuant to Section 18-8-503, C.R.S. This form has been approved by the Mined Land Reclamation Board pursuant to section 34-32.5-112,C.R.S., of the Colorado Land Reclamation Act for the Extraction of Construction Materials. Any alteration or modification of this form shall result in voiding any permit issued on the altered or modified form and subject the operator to cease and desist orders and civil penalties for operating without a permit pursuant to section 34-32.5-123, C.R.S. Signed and dated this I'-1 day of „ben� CCSL"FgerTh Ejccati�C� ./ I � Applicant/Operator or Compan e Signed: dela' Title: Pre-SLari-nt State of CoL.oco,.cb ) ss. County of Loirnin.r.) If Corporation Attest (Seal) Signed: L;,egat Vivt, Corporate Secretary rt. val t Town/City/County Clerk The foregoing instrument was acknowledged before me this / day of �� 0� • ail by KA2Am Cn t -' cxn as PvtSe-r\t1 • CAITLYN KAUFFMAN NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20184035097 MY COMMISSION EXPIRES SEPTEMBER 4, 2022 Not. P blic My Commission expires: c1/-I/7-fJZZ SIGNATURES MUST BE IN BLUE INK You must post sufficient Notices at the location of the proposed mine site to clearly identify the site as the location of a NOTICE This site is the location of a proposed construction materials operation. Coulson Excavating Company, Inc. whose address and phone number is, 3609 N. County Rd. 13, Loveland, CO 80538 970-667-2178 has applied for a Reclamation Permit with the Colorado Mined Land Reclamation Board. Anyone wishing to comment on the application may view the application at the Weld County Clerk and Recorder's Office, 1402 N. 17th Ave, Greeley, CO 80632, and should send comments prior to the end of the public comment period to the Division of Reclamation, Mining, and Safety, 1313 Sherman St, Room 215, Denver, Colorado 80203. I, Peter Wayland , hereby certify that I posted a sign containing the above notice for the proposed permit area known as the (Name of Operation) Amen Aggregate Resource , on (Date Posted) 5/10/2019 V SIGNATURE voa,AIL,eA sl le) iaotct DATE Table of Contents 6 4 1 Exhibit A — Legal Description 1 6 4 2 Exhibit B — Index Map 2 6 4 3 Exhibit C — Pre -mining and Mining Plan Map(s) of Affected Lands 3 6 4 4 Exhibit D — Mining Plan 7 6 4 5 Exhibit E - Reclamation Plan 11 6 4 6 Exhibit F - Reclamation Plan Map 24 6 4 7 Exhibit G - Water Information 35 6 4 8 Exhibit H — Wildlife Information 56 6 4 9 Exhibit I — Soils Information 57 6 4 10 Exhibit J — Vegetation 61 6 4 11 Exhibit K — Climate Information 62 6 4 12 Exhibit L — Reclamation Costs 64 6 4 13 Exhibit M — Other Permits and Licenses 70 6 4 14 Exhibit N — Source of Legal Right to Enter 71 6 4 15 Exhibit O — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined 73 6 4 16 Exhibit P — Municipalities Within Two Miles 78 6 4 17 Exhibit Q - Proof of Mailing of Notices to Board of County Commissioners and Soil Conservation District 79 6 4 18 Exhibit R — Proof of Filing with County Clerk and Recorder 82 6 4 19 Exhibit S — Permanent Man -Made Structures 83 ATTACHMENT A ATTACHMENT B ATTACHMENT C ATTACHMENT D ATTACHMENT E - Wildlife Habitat Assessment Amen Aggregate Resource Weld County, Colorado May 23, 2018 — Vegetation Assessment, Amen Aggregate Resource Weld County, Colorado July, 2018 — Wetland Delineation Report, Amen Aggregate Resource Weld County, Colorado July, 2018 — Habitat Assessment, Amen Aggregate Resource Weld County, Colorado July, 2018 — Proof of Mailing Notifications to all Owners of Record within 200 ft of the the Affected Area (Permit Boundary) and Proof of Publication, and Proof of Pursual of Agreements to Mine within 200ft. ATTACHMENT F — Geotechnical Slope Stability Report 1 6.4 1. Exhibit A — Legal Description The permit area includes 2 separate parcels of land owned by the operator, Coulson Excavating Co , Inc and Croissant Family Farms LLC The combined permit boundary is more specifically described as Beginning at the South West Corner of Section 19, T5N, R67W, thence bearing N 45 14'21" E a distance of 99 44' to the Point of Beginning, THENCE (1) North 0°31'09" East (Basis of Bearing, 2,454 65 feet, THENCE (2) South 88°58'43" East, 209 87 feet, THENCE (3) South 29°10'39" East, 607 40 feet, THENCE (4) South 55°09'50" East, 472 52 feet, THENCE (5) South 77°00'05" East, 306 87 feet, THENCE (5) South 83°04'39" East, 386 49 feet, THENCE (6) North 71°04'48" East, 390 13 feet, THENCE (7) North 88°09'23" East, 143 26 feet, THENCE (8) South 58°59'39" East, 363 98 feet, THENCE (9) North 89°36'58" East, 58 36 feet, THENCE (10) South 0°23'02" East, 231 43 feet, THENCE (11) South 89°58'11" East, 1,256 35 feet, THENCE (12) South 31°23'28" East, 148 38 feet, THENCE (13) South 12°01'38" East, 100 52 feet, THENCE (14) South 39°37'48" East, 208 25 feet, THENCE (15) South 45°23'33" East, 356 98 feet, THENCE (16) South 55°17'00" East, 544 56 feet, THENCE (17) South 21°19'05" East, 165 81 feet, THENCE (18) South 0°00'11" West, 144 65 feet, THENCE (19) South 89°58'52" West, 2,240 65 feet, THENCE (20) South 89°58'52" West, 2,491 62 feet to the POB, Containing 6,576,452 98 square feet (150 98 acres), more or less Amen Aggregate Resource Specific Exhibits Page 1 of 84 __________ cc : in_ J 5°00 13 18 17 16 [NSTOWN LfR LN I �� E CO RD 2OC / h � Koenig ,,--_ - CO RD 56 `�0 ( /1 _ �, N Nom_. v I �_ - I X4950 c \ / it __ \.., I T5N R67W `\oin Cc 24 �I 19 20 f a 21 / - o C\ L-------------- ill and I�r t ---c, , . ) . 485O //rcd l t �—Ma- —`' � rQ800� O ,_. V i IX I WI O _________\r- a-il rai -0_• � 25 30 29 _ 2 88 �--� _. _Fi AMEN AGGREGATE RESOURCE `- - .56. • ) r I O (9. ‘ete4 30 IA ._.. t'n _.„ a• -4 -- 29 4.4 -- r-) 25 1 I 1 � NItCO ^N RD 52 1/4 aid. Hardman 0 1 o00 2000 Yoo 4000 I ^ w a N � o j Feet ., \� 1:24000 _ E CO RD 16 mcn. _ REVISIONS Walla 112 AMEN CONSTRUCTION AGGREGATE WELD MATERIALS COUNTY,CO RESOURCE REGULAR APPLICATION INDEX EXHIBIT MAP B FV ...nag -a 'l A➢PYJ. Environment! & engineering :'u tit), WOW dUU(ik .i 10 80308 ph 30.i-44,7-96€ 1 scA E 1"=2,000' AND EXHIBIT B.OWG I N REV PKEPMED c04 COULSON EXCAVATING CO., INC. DOLW*4N CTW CHECKED ST PFw I D► 11 11/13/2018 SIAM 1 OF 1 1 -Y — LEGEND _laid_ PERMANENT MAN MADE STRUCTURES WITHIN 2001T YAfl CONIOUe - 1 n ail* CONTOUR - 1 f 1 MAP ID STRUCTURE OWNER 1 1 Utility Pole Poudre VaNey REA PR03L A`.NLR4A[ sTiYEN LC[ WOGC OF ASPHALT NOAD PARC[l1 85710-00-001 C ALE NS, west. U toussu • »S0? Oa 13 LOVCLAN0 CO. 80537 potato 095719000057 OIL a GAS *ELL 7 Utger Ound Gas Line a Anadarko 13905 KNOT RO GOLDEN CO ap401-1519 • CWS.aGS ANN I. a bnn.11" L PO 90x 811 lima Gas Line DCP Mdstream 1• e••DSOFT. CO 80550-0814 ANADARKO GAS LINE _ — — Underground Water Men Ernie Thompson Water District .,, — - - - .. - - - SNCLA,R (LIQUID) GAS uNE Underground Gas Line XcelEnergy 5 ik \ '°3o DCP GAS LINE ti Web County Roads Web County Public Works • T \ TRus (PMMAR+LT tortswoomm) TelephanerFuber Line Ones* Communications ` PARCEL OOUlCART ISURROUN0ING) `LC1iON a Plugged & Abandoned OE Well - Coulson 19.32 Anadarko 4 I! t LINE ` -...-4,M. \ � al ti L ASCMLNI 9 8 Plugged Abandoned O11 Wel - Amen 1 Anadarko •�-- c, a 1 ' $ R1Grr1 Or NAT (ROAD) 10 Wiled & Abandoned 01 Well - Coulson 19-42 Anadarko V . , ' 4040 r---------� UrtctM rt000etaw - ZONE AL • J ` A PARCEL. 095719000046 RIYER/CANAL 11 Plugged S Abandoned 04 Well - Koenig 19.1 Anadarko T \ � - PALLOTTO ,CHRl A(L GENE * SANDRA cHSlINt 26500 CR +3 HILL k BRUSHM 481111 PROPOSED 12 Oil Well• Croissant 19-43 Anadarko S{ 'e DITCH LOv[LArD CO. 80537 P(RY,T BOUNDARY 13 Cl,Well - Croissant 19-44 Anadalk0 %2 • PROPOSED uY1T5 Or stoic 14 Petroleum Pipeline Salmi Pipeline Company e \ \ _ ' 15 Irrigation Ditch Hill & Brush EMch Co \ 1 \ \ 1 r j 1'♦\ \-- ' , PROPERTY BOUNDARY • ks 7 16 Oil8 Gas FacdRles (Tanks Separators etc I Anadarko _ - / / \ !,161' \ \ 17 Oil & ('as Facilities (Tanks Separators etc.) UCP Midstream \ TL k i . PERMIT BOUNDARY , L ` \\1 8 1 t.i \, 2 . �1 to ses lac 'rf " sit. �41. l \ ', `. -1- \ ��\`IL-el � .,-.•'..^' r n.„' _ > �1 ••••••••• %• ,'� p H ` �i�� , al \ / �� SSS ♦ �/ jj � / -� ) ARedI, 095719100059 - ao ,_ .� ,_ <,..., / 2 E f Y KATHERINE NELL '•`� ' 1N. 27071 COUNTY ROAD 15 \ ANNSIoew, CO 80534-8724 .,, ` ` I �Q7 ` — — V L-4 _ _ \ i �Rrr, ,�„i• WC ><...;�1)1�, Md�p COt WIT ROAD T;;' �i 1 1 ? f, ' \ 7/ I ` — I k w CELL 4 �1 1.5 \ \`;, \ I. . /4 7 __.`�/ �, -.... - 1 ` }' PROPOSED COULSON/CROISSANT 1 PROPERTY LINE 1 ` ' ANADARKO I PARCEL/. 095719000053 \ • `\ \\ {. •- •. p • .`^^ �' PIPELINE EASEMENT ,, . , •qb ` PAaute 0957,9000053 CROISSANT FAMILY CARP LLC _ �� a \„S l,J�^'� \ _ tJ/ 49B 3 5 0uw1co 8081 Y ROAD B'9319 S I�•�I\. I LI 1 �% Z / ; 0 ExiS TINS ' S <. \ 5 i0 Cell, 2 11 I 12 C / SITE ACCESS ES \ .) ! ' \ � �i I `\ I CELL T. l J' I t - SINCLAIR EASEMENT L\ • I� --',° .et) p • \ k . • - J` iv (re PARCEL/ 0957,9300061 I14 ! - 13 CELL -2 ` - /•,. c o• CELL 3 .' . �6 \� / \ \ti . 2 \ • .,Il Ali ., , ,,.• 2 ., �, .."3/44)., . 2 , ��. - .\ I j 1 1 ti j 1 \ J ` via a 4IAt l I ta . - •' - - -T---.w• f- 016-� ...4.-r•e al n S -i�r VI 54505r ' i . -' r• ._...-i'+11.7' -' _ _ ,r ...1.41 in _ .., .4...]1.811• -.4 \ _ ''; ` - • .�I.. �' 0 '� 7 , '- -, —MELD r 0 Cr AD SI _ , ,-., i { -Sn 9 silo 'A'^.,'id •w :�L .•,. • 11,0 It • - -•-� . - _- "' _ _ - 7 1 - I .� _ •� ..Lai 10w Tow t - 1 t r . .. =- 1 �1 ,:.A :w 1 , _ 1 - err i 1 ICD 17 1 .,. 1 CI + 1 naC t I , w -w 1 1 1 1 , .___ ^ J _ [ ra SECTION -• •. —1 ` - �I �� 1 I w \ 1 CORNER / 'PARCEL/ 85250-00-001 / I ' ' / J " Y� '� PARCEL 095730000019 READr-Mix CONCRETE. INC ^C( 1 / / PARCEL. 095730000020 \ \ BETZ EMANUEL TRUST LOVELAND tPO 80IT 01rEl ANOQCO 80S39 �_ "'-" — \ 1 • I ( / i CORNER PARCE /• 095730000038 1 i IDVIIANC R[ADY WK 1NC OF THE $W • I 27775 L VIOLA C 1/2 INI °[ it 27375 BIACKF001 RD r LOYEtArD CO. 80537 \ 6835 CR 5? Y5 AHNSTONN CO 80534 ( ......��r _�♦ 1 p0 BOx ?99 SECTION 19,T5N,R67* qtr. — I L((� - • ( 1 / l0Vct o CO. 80539 I �I . {i I ( - 7 •• \\ ... •'.-- kil' I I 1 I I I 1 is .\ ----) ()_......0 I jy� `/ j I .44 M I I `\ / 1 1 I at*."\....'.. 19 I W I i LA VI I t. \I H • 1 6 >m .99 I l` REVISIIONB,, Weiland.Inc. AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS WELD COUNTY APPLICATION EXHIBIT C-1 PRE -MINING PLAN MAP 71r41• ., 11.0 •+111 1.10 Environmental & Engineering in tie JON 14100, dUU!.k a CO Warn ph 303 443 31.11 — \L4r 1"=200' EXHIBIT C-1.OWG 4,, REV EXCAVATING CO., INC. aiiawn: Sr cTW 1J~ en'COULSON PFW 1 >~ 10/15/2019 1 1 OF 1 LEGEND __ MINING NOTES FXISTINri TO EXCAVATION, THE LIMITS •PRIOR \ \ S Mlle \\ \, \' r .`', i 1 .i I• OF MINING SHALL BE STAKED OUT. PRIOR TO EXCAVATION, ALL EDGE OF ASPHALT ROAD FENCE y«` .•. >K 1-.a SINCLAIR , \ OW -5 \ \ \ i UNDERGROUND PERMANENT MAN MADE STRUCTURES SHALL BE (LIQUID) GAS LINE «' C-'1, i. MARKED DR STAKED. ,:r -" DCP GAS LINE PARCEL I PRIOR TO EXCAVATION, THE BOUNDARY (SURROUNDING) \ • `�� SINCLAIR UNDERGROUND PIPELINES SHALL BE STAKED WITH METAL 1 -STAKES OR EQUIVALENT. PROPERTY BOUNDARY • `\ \ \\ ` 1,'-�� 1 \\ I A MINIMUM SETBACK OF 46 FEET SHALL BE MAINTAINED FROM ALL PERMANENT MAN MADE SECTION LINE EXISTING EASEMENT se " HILL & BRUSH �\• DITCH \ i \j STRUCTURES AS MEASURED FROM THE EDGE OF THE STRUCTURE TO THETOPOIMININGCUTSLOPE RIGHT OF WAY (ROAD) _ _ - _ - _ RIVER/CANAL \' �� ` AN AVERAGE HIGHWALL SLOPE Of PROPOSED r - - PERMIT BOUNDARY / APPROXIMATELY 1H. 1V SHALL BE I '• \ PROPERTY BOUNDARY ' / �` / MAINTAINED FOR ALL PIT EXCAVATIONS PERMIT BOUNDARY ;\ 111 \ \ 1 • LIMITS OF MINING \ I \\J `� I T I T 1 PIT SLOPES (APPROXIMATELY 1 1) / \► s�� —i GENERAL DIRECTION 'S\\ OF MINING \ I O `ir in <f A _ '''� t4.V. t / ti CELL ♦ (LOCATION SEDIMENT SEO ME TO P ONO SUBJECT CHANGE) \ ` ✓�""� \ \ Pei; \ 7%6, ~j 3'O� CELL 5 / 4. �� •-I I, `/ -- i - - , \ •�'. "` �, HILL BRUSH -... \ \ PROCESSING STOCKPILES C:11:11:::) -` OVERFLOW OUTLET DITCH I Sr r'- R,1 / • // r\-.• \ \ -d•\ CELL 5 SEDIMENT � t ', POND , ; -. ,��T f�N 1 - \ i r j ,;zrrn j .41 / `� CELL 4 �j i >t OW-, NORTH ri CONvE YOR I \ , -___ ., "/ // .; F 1 $ � ♦♦ _ CELL 3 SEDIMENT PO -ND CELL 6 SEDIMENT POND (LOCATION SUBJECT TO CHANGE) (LOCATION SUBJECT 1'w SOFT EASEMENT I I I 1 ♦♦ \ / \ ' ♦' TO CHANGE) I I (ANADARKO)I ,/ , ' / IM1.T -=-- t?3r.c / ( / ��CELL 46of1 -� .r;.• :•. �t II 2 /'I ''•.' -� A..0 el._ .-ATE ,-� • c'VL SSING , 46 DFT (EAST CONvEYOR I \ \ /•vT \ � • � CELL 1 1 1 / 1 l 1 / .• � 1 ��i O CELL 3 I ; \ 1 �`• CELL I SEDIMENT POND r u \ \ • ••�. \ \ EASEMENT • (LOCATION SUBJECT .. / ♦ • �• ` ■ 0 ty CELL I (SINCLAIR) ♦ \ TO CHANGE} COUISON/ ♦ / /� �\\ •' �/ PROPERTri TINE ♦ \ \ /\. \` \ OVERBURDEN STOCKPILE •� • ` = �� rr[[1�❑y It ♦ CELL 2 SEDIMENT POND \\` • \\ ♦ ��1��\\ .. �— ♦� ■ • [ �. U OVERBURDEN STOCKPILE I - t (LOCATION SUBJECT \I \ TO t \ I ` ' CHANGE) \ TOPSOIL - \ STOCKPILE '��■�� A ��•• • ■ T OVERBURDEN STOCKPILE \ OW -3 ', I •♦ 1�i \\ •I1 . I OW -1 iit \ fit' I ` \I �1■■■■■■■■■•■■■■■■■■■■■■■I■■■■■■■■■■■■■■.� �•\ EW-2 IIIIIIIIIIIIIIIZII ZIIIIIIITIIIIIIIIIlIll1 ,d, - - . - -} � T a- -.— _4 - . — -- . i4 1 25 OW -2 l ��,� __V V OAS �tY xp -•-- 1 —. ► :.- 4 t' l ?/G` a s--� `xr r�i +.►-- c �s oe+ �n • • • >t I —.au. : ni yea ...s. : _ .1..-±•,,W11- TOPSOIL - I--_--� 1... M a... i — — —4 �— a,,, — , . .rM n• "u • 1. { �,y, — — -'— - STOCKPILE _ / it .:-'It � - -- • ,� t�l w.n. , ..a f.r 1 _�I HMA PLANT 1' It \ I. SE CORNER ` c \ \ SECTIONCORNER •_ 1 PAD .ELEV. - .61.0 Ed ' 1 OF THE SW ] ` / - \ I I I SECTION 19.TSH.R67W _ I .I / �- I f A I1 L REVISIONS __"", S Environmental Weiland. Inc. & Engineering .w dal luau dULA ak.l LU 90308 ph 303 44.1 95.2I AMEN AGGREGATE REGULAR 112 CONSTRUCTION WELD RESOURCE MATERIALS APPLICATION COUNTY EXHIBIT SHEET -1 MINING C-2 PLAN MAP 1"=150' EXHIBIT C-2 MINE PLAN.DWG REV ^~'•'•I• I• COULSON EXCAVATING CO., INC x..,.... cTW rc•ko•. PFW y 12/03/2019 �., 1 OF 3 /j I 1 1 „ 1 CONVEYOR TRUSS 1 2e REINFORCED CONCRE TE PIEk ~ 40F SPAN 1 a- \ 1 24' CONCRETE PIER SPACING , 40 Of t \` 24" REINFORCED CONCRETE PIER • �I� �`� ,. �.: ••10 OFT , �� OVERLAND CONVEYOR ` VERTICAL UPRIGHT SPACING �� \ \ \ \ \. \ 443/4.` o >o �M - aion \ N%� 1 4820 - - -4820 4810- OVERLAND CONVEYOR • 40 TRUSS i UPRIGHT SUPPORTS 40FT SPAN -4810 WITEVERY FT k{t I1/I\ I1' 4800- aBOo - - tUG rk w E �� REINFORCED 24- CONCRETE PIER i I 4790-. EXISTING GROUND• f 1 _] 4790 ' BIG THOMPSON RIVER DATUM 6LZY • •4780 1780.000 6+80 7+00 750 8+00 0415094 00 945 0 9+7S o w a UM a m OM Fs. REVISIONS 6onWelland. Inc. mental & Engineering PO d01 laoa� aouta,-,i c o 90309 Ph 303.., gut AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT C-2 MINING SHEET -2 EAST CONVEYOR PLAN . i', •a>a P.t3 ,�� 1"-10' EXHIBIT C-2 MINE PLAN CONVEYOR P&P.0WG a REV COULSON EXCAVATING CO, INC �„,,,n cTW r.-'a:s. PFW a10/15/20'19 �.,. 2 of 3 0+00 4820- 4510 - DATUM ELEY / / / / / / / / / / ,Cyr // / �1 / '� % IV rpCP /� o I I ti I24- REINFORCED CONCRETE PIER 24' REINFORCED CONCRETE PIER V a i 40 OFT 1+00 2400 OVERLAND CONVEYOR FROM FEED r EXISTING GROUND. . CONVEYOR TRUSS r 40FT SPAN REINFORCED 24- CONCRETE PIER BIG THOMPSON RIVER 100 yR WSEL. 1 C--) OVERLAND CONVEYOR TO PROCESSING T nip 4820 '-4810 -4800 alb 4790.000 0+00 0+50 1+ 0 1+150 2+00 4790 2+ 50 3+00 0 tp IN IND a a Weiland. Inc. Environmental & Engineering .'o dill MOH/ d(JU( tit a CU Ulf:IUB oh .703 443 US'I AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WLLD COUNTY, CO EXHIBIT C-2 MINING PLAN MAP SHEET -3 NORTH CONVEYOR \G 4I 1"-20' COULSON EXCAVATING CO, INC ID 411. SS CTW OW n4 EXHIBIT C-2 MINING PLAN CONVEYOR P&P.OWG I REV PFW 10/15/2019 r---3 OF 3 f 1 ^,(7n 6.4.4. Exhibit D — Mining Plan (a) Description of Methods Mining will advance in the numeric sequence assigned to the mining cells For a given cell, excavation will begin in the area designated for backfill, thereby facilitating concurrent reclamation where overburden from subsequent cuts will be directly backfilled to the previously mined out excavation specified for backfilling (see Exhibit F -Reclamation Plan - Sheet 1) The plant area is located in Cell 6 and will be removed from the site prior to mining that final cell Mining will utilize conventional dry mining techniques whereby dewatering trenches are first constructed around the perimeter of the active excavation Mining will generally start at the low point of groundwater elevation and advance toward higher groundwater elevations In general, this results in the direction of mining occurring perpendicular to the flow of and away from the river Mining highwalls will vary from 0 5H 1V to 3H 1V Topsoil is then removed with an excavator and stockpiled separately from overburden Overburden is then removed with an excavator, loaded into non -road haul trucks (rock trucks) and transported to an initial stockpile The initial stockpile volume is expected to be between 20,000 - 30,000 yd3 corresponding to an initial cut of approximately 2-3 acres Extraction of pit run will occur by excavator, which sits on top of the unearthed gravel layer and loads rock trucks The excavator generally advances 15ft strips back and forth along the active mining highwall Material mined from Cell 1 and Cell 5 which occur east and north of the river will be transported via overland conveyors across the river to the processing area The overland conveyors have been engineered to span the Big Thompson River above the 100 yr floodwater surface elevations The 100 yr floodwater surface elevations used to specify conveyor elevations are based on the existing FEMA effective data Plan and profile drawings for the conveyor river crossings are given in Exhibit C -2 -Mining Plan Sheet -2 East Conveyor. (for Cell 1) and Exhibit C -2 -Mining Plan Sheet -3 North Conveyor (for Cell 5) (b) Earthmoving The primary earthmoving activity will be 1 Stripping of topsoil and stockpiling in areas shown in Exhibit C-2 Mining Plan Map 2 Excavation of overburden and hauling to the stockpile areas or to the backfill area 3 Excavation of pit run and hauling to the conveyor feed Amen Aggregate Resource Specific Exhibits Page 7 of 84 Table 6.4.4-1. Mining Earthmoving Quantities Summary MINING OVERBURDEN PIT RUN CELL AREA PERIMETER VOLUME TONNAGE [acres] [ft] [yd3] [tons] CELL 1 CELL 2 CELL 3 CELL 4 CELL 5 CELL 6 21 0 165 192 38 20 2 136 4,319 4,285 3,778 1,604 5,478 3,018 214,036 86,939 182,937 33,175 141,821 101,331 629,772 454,038 639,899 118,536 404,597 538,116 94 3 760,239 2,784,958 Amen Aggregate Resource Specific Exhibits Page 8 of 84 (c) Water Diversions and Impoundments No surface water diversions are planned for the site Groundwater shall be diverted by pumping from dewatenng trenches to a temporary settling pond impoundment either within or adjacent to the excavation (d) The Size of Areas to be Worked at Any One Time The largest mining cell is approximately 21 acres, which corresponds to the size of the area to be worked at any one time Mining will generally advance by removing overburden from 2-3 acres ahead of the active pit run extraction area (e) Mining Timetable Table 6 4.4-2 Mining Timetable Summary provides a summary of the mining sequence and approximate time to complete It should be noted that the prediction of time to complete each mining cell is based on current market conditions Should market conditions change, the timetable will change accordingly The mining will occur in the numeric order of the mining Cells Mining will be phased for the purpose of bonding will be as follows To begin, a surety bond will be posted for Phase I which is defined as reclamation of Cell 1, revegetation of Cell 6 (plant site) and revegetation of the east conveyor site disturbance Before any disturbances occur outside of Phase I, additional surety will be posted for Phase II which includes reclamation of Cell 2 Before any disturbances occur outside of Phase II, additional surety will be posted for Phase III which includes reclamation of Cells 3, 4, 5 and 6 Table 6.4.4-2 Mining Timetable Summary Mining Cell Mining Activity Approximate Time to Complete Cell 1 Strip & Mine 2 0 Cell 2 Strip & Mine 2 0 Cell 3 Strip & Mine 2 0 Cell 4 Strip & Mine 1 0 Cell 5 Strip & Mine 1 5 Cell 6 Strip & Mine 2 0 (f) The Nature of Deposit to be Mined and Overburden Amen Aggregate Resource Specific Exhibits Page 9 of 84 The thickness of sand and gravel to be mined varies from 5-21 ft The thickness of overburden varies from 1 5-7 5 ft The stratum underneath the sand and gravel deposit is weathered claystone followed by indurated claystone (g) Secondary Commodities There are no secondary commodities (h) Use of Incidental products No incidental products are expected to be extracted from the site (i) Explosives No explosives will be used Amen Aggregate Resource Specific Exhibits Page 10 of 84 6.4 5 Exhibit E - Reclamation Plan (a) Description of the Type of Reclamation The site will be reclaimed to allow land uses including developed water resource, residential and agricultural Each mining cell will be backfilled with the volume of overburden removed from that cell Backfilling will occur concurrently with the mining of each cell as overburden is removed from successive cuts after the initial 2-3 acre excavation is mined out The remaining mining cell excavations will be reclaimed to Water Storage Reservoirs (WSR) identified as Ponds 1-5 Reclamation of each mining cell WSR will include construction of a compacted clay embankment (Clay Liner) around the perimeter of the excavation to prevent seepage of groundwater into and stored water out of the WSR's Earthwork quantities have been determined by utilizing Autodesk Civil 3D 2020 to model existing (stratigraphy), mining and final grading surfaces which are compared in various ways to yield accurate earthwork volumes A summary table of reclamation earthwork volumes, areas and lengths is given as Table 6.4.5-1 Reclamation Earthwork Quantities Summary The earthwork resulting in the grading plan given in Exhibit F Sheet 1, is balanced in terms of onsite materials and no outside fill is required to complete this grading The concrete piers used to support the conveyors will be removed and buried in the backfill areas as follows For the East Conveyor, piers on the east side of the river adjacent to Cell 1 will be buried in the backfill area of Cell 1 Piers on the west side of the river will be buried in the backfill area of Cell 2 For the north conveyor, piers on the north side of the river adjacent to Cell 5 will be buried in the backfill area of Cell 5 Piers on the south side of the river will be buried in the backfill area of Cell 6 Flood Protection Spillways Flood protection spillways have been designed as described in Exhibit G Water Information. The spillways shall be constructed immediately following the completion of mining any given mining cell Plan and profile drawings for each spillway are given in Exhibit F Sheets 4-11 Quantities for the specified spillway slope revetments are given in Table 6 4.5-2. Spillway Slope Revetment Quantities Summary Table. Reclamation Earthwork/WSR Construction Completion of the backfilling of each mining cell will be coincident with the completion of the mining of that cell Application of 8" of topsoil and revegetation will then begin for the backfill area of each mining cell within 1 year of the completion of that mining cell Water Storage Reservoirs / Compacted Clay Liner Specification The borrow material proposed for construction of the Compacted Clay Liner (CCL) is the weathered claystone horizon of bedrock, which occurs under the gravel seam The weathered zone of claystone occurs at a thickness of 2-3 ft Geotechnical investigations conducted for nearby gravel pits indicate that the weathered claystone is a suitable borrow material with plasticity indices near or Amen Aggregate Resource Specific Exhibits Page 11 of 84 above 20 Additionally, the CCL borrow material shall also meet the following criteria, a) Percent fines (should contain at least 20% fines on a dry weight basis) b) Percentage of gravel (material retained on a No 4 sieve should not exceed 10%) c) Stones and rocks (no rocks larger than 2 inches should be in the liner material) Construction of the CCL will begin by moisture conditioning and disking of the weathered claystone borrow material on the excavation floor Standard Proctor laboratory analysis of the CCL borrow material at a frequency of 1 per 10,000 yd3 shall be completed prior to moisture conditioning to determine the optimum moisture content/maximum dry density A keyway shall then be excavated around the perimeter of the excavation offset approximately 5-6ft from the toe of the excavation slope The keyway shall be excavated to a depth and width of 4ft with 1 H,1 V side slopes as shown in Exhibit F Reclamation Plan Sheet 3 (Typical Section) The clay liner will occupy the entire area between the mining highwall and the final 3 1 slope Amen Aggregate Resource Specific Exhibits Page 12 of 84 Table 6.4 5-1. Reclamation Earthwork Quantities Summary MINING CELL TOTAL AREA BACKFILL AREA BACKFILL CLAY LINER VOLUME VOLUME POND WATER TOPSOIL/ POND AREA SURFACE REVEGETATION (TOP OF SLOPE) AREA AREA TOPSOIL REPLACEMENT VOLUME [acres] [acres] [yd3] [yd3] [acres] [acres] [acres] [yd3] CELL 1 y POND_ 2 POND 2 _ _ POND 3 CELLS y_- (`J CELL 4 CELL 6 - POND 4 CELL 5 POND5 _ 21 0 _ _ ___ __ 16 5 205 40 14 4 20 2 10 0 _�-- 214,036 2 33,700 0 --____�__ _ ___, 13 1 _ ,_______ 2__ __ 110 �_ ___ __ _-., -. 12CELL 6 7 80 70 - ___ _. - - _ - - 5 3 w_ ....____ 4 0 _ _ _ _ _._ _ w 14,108 8 4 1 6 0 00 4 3. _ 6 9 93,030 1 56,322 0 28,8720 _ 27,450 0 __ - _ 180,7841 Y -_T46,6930 00 15,4270 161,945 2 34,874 0 r _ _ 96,994 0 141,820 9 30,476 0 __ 7,158 2 _ _ _- - v_ _ 7,6369 1,5059 7,421 7 LL 10,707 8 145��-�_947 ��4�� I1 40 36 14 _ _ __- 10 1 13 6 6 9 28 8 - 26 6 10 0 133 121 Totals 96 4 31 2 791,616 5 370,808 0 96 2 87 3 32 0 34,430 5 Amen Aggregate Resource Specific Exhibits Page 13 of 84 Table 6.4.5-2. Spillway Slope Revetment Quantities RIPRAP RIPRAP SPILLWAY / POND AREA VOLUME RIPRAP MASS RIPRAP BEDDING AREA RIPRAP BEDDING VOLUME RIPRAP SOIL BEDDING CEMENT MASS AREA SOIL CEMENT VOLUME [ft2] [yd3] [tons] [ft2] [yd3] [tons] [ft2] [yd3] POND 1 INLET 1219 2 _w ___ _ _-._ . �_ _ _...... __ POND 2 & 3 INLET 13779 .... �.A_ _a...x..,,.. . .. _ J.,.,.._ .... ,.... >A . i `.,,.__ POND 2 & 3 INTERCONNECT POND 2&3OUT 13956 45 2 _ 510 517 104 4 123 6 4' 505 52 1 __J 102 0 -.__ ___ -___ 1153 1168 236 0 279 3 — _� _ . 1142 117 7 1219 2 -__ ___ 13.779 13956 2819 6 3337 0 ,.r Mme_ _ . 13642 1406 2 - w 22 6 - -. - 255 258 52 2 61 8 _ 253 26 0 _ Y-� W _ y 38 8 1251 2 _�_ 439 13988 _.._�..... _.gas..,...._ _ _.,...._...- 2559 3 445 9077 __ 89 8 4263 8 106 3 1730 2 _ _ a _ ,2 —IL_:'__—_-- 435 14110 44 8 2023 7 ---- -�-------�-J-42729 4 27845 3 92 7 1036 .,; ., y:1..:,`.. 189 6 672 315 8 128 2 1045 149 9 3165 1 2062 6 POND 4 IN 2819 6 POND 4 OUT 3337 0 _ _�� _ v , _r POND 5IN 13642 POND 5 OUT 1406 2 POND 3 PIPELINE EMBANKMENT SLOPE POND 4 PIPELINE EMBANKMENT SLOPE Totals 478 5 1,0814 239 3 411 5 6,379 3 Amen Aggregate Resource Specific Exhibits Page 14 of 84 Once the borrow material is within the moisture specification (0 to +3% of optimum moisture content), the keyway will be completed by placing 8" lifts into the keyway excavation and compacting with mechanical methods sufficient to bring the density to 95% of maximum dry density Following completion of the keyway, construction of the CCL will begin conforming to the geometry shown in Exhibit F Reclamation Plan Sheets 2-3. Construction will proceed by placing 8" lifts of moisture conditioned (0 to +3% of optimum moisture content), weathered claystone around the perimeter of the excavation followed by compaction with a sheepsfoot compactor or similar with sufficient compactive energy to bring the lifts to 95% of maximum dry density Verification of final CCL density shall be performed at a frequency of once per 10,000 yd3 with a nuclear densometer Following backfilling of the slopes, a protective shell shall be as shown in Exhibit F Reclamation Plan Sheet 3 (Typical Section) to the elevation of the normal pool The specifications for the protective shell are given in notes for Exhibit F Reclamation Plan Sheet 3 (Typical Section) Following construction of the CCL in Cell 2, Additional soil cement slope protection shall be installed on the WSR's slopes as shown in plan view on Exhibit F Reclamation Plan Sheet 1 in cross section on Exhibit F Reclamation Plan Sheet 2. A soil cement detail is also given in Exhibit F Reclamation Plan Sheet 2. The purpose of this additional slope protection is to protect the two Sinclair gas pipelines from potential head -cutting erosion that could otherwise occur during significant flooding events (b) Post Mining Land Use Comparison Post mining land use will differ from pre -mining land use in that water storage reservoirs will occupy a significant portion of surface area and residential structures may be constructed Otherwise, the agricultural use will remain similar to the existing land use (c) Description of How the Reclamation Plan will Meet the Requirements of Section 3,1 The reclamation plan specifications described herein are designed to meet the requirements of Section 3 1 of the Mineral Rules and Regulations of the Colorado Mined Land Reclamation Board Completion of the reclamation plan as specified shall therefore meet the requirements of Section 3 1 (d) Topsoil Segregation At a minimum, topsoil shall be segregated in areas shown in Exhibit C-2 Mining Plan Map (e) Reclamation Sequence and Timetable An estimate of the sequence and periods of time for each reclamation activity is given in Table 6 4 5-3 Amen Aggregate Resource Specific Exhibits Page 15 of 84 Table 6.4 5-3. Reclamation Sequence Summary Mining Cell / Size Reclamation Phase/Activity Approximate Time Period to Begin this Reclamation Phase Approximate Time Period to Complete Cell 1 Backfill approximately 10 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 1 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 1 Within 5 Years of Commencement of this Reclamation Phase Cell 1 Construct Compacted Clay Liner Within 1-3 years after completion mining Cell 1 Within 5 Years of Commencement of this Reclamation Phase Cell 1 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 1 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase r Cell 2 Backfill approximately 4 1 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 2 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 2 Within 5 Years of Commencement of this Reclamation Phase Cell 2 Construct Compacted Clay Liner Within 1-3 years after completion mining Cell 1 Within 5 Years of Commencement of this Reclamation Phase Amen Aggregate Resource Specific Exhibits Page 16 of 84 Table 6.4.5-3. Reclamation Sequence Summary Mining Cell / Size Reclamation Phase/Activity Approximate Time Period to Begin this Reclamation Phase Approximate Time Period to Complete Cell 2 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 2 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase Cell 3 Backfill approximately 6 0 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 3 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 3 Within 5 Years of Commencement of this Reclamation Phase Cell 3 - Construct Compacted Clay Liner Within 3-6 years after completion mining Cell 3 Within 5 Years of Commencement of this Reclamation Phase Cell 3 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 3 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase Amen Aggregate Resource Specific Exhibits Page 17 of 84 Table 6 4 5-3. Reclamation Sequence Summary Mining Cell / Size Reclamation Phase/Activity Approximate Time Period to Begin this Reclamation Phase Approximate Time Period to Complete Cell 4 Backfill approximately 4 0 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 4 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 1 Within 5 Years of Commencement of this Reclamation Phase Cell 4 Construct Compacted Clay Liner Within 3-6 years after completion mining Cell 4 Within 5 Years of Commencement of this Reclamation Phase Cell 4 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 4 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase Cell 5 Backfill approximately 6 9 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 5 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 5 Within 5 Years of Commencement of this Reclamation Phase Cell 5 Construct Compacted Clay Liner Within 1-3 years after Completion Mining Cell 5 Within 5 Years of Commencement of this Reclamation Phase Amen Aggregate Resource Specific Exhibits Page 18 of 84 Table 6 4 5-3 Reclamation Sequence Summary Mining Cell / Size Reclamation Phase/Activity Approximate Time Period to Begin this Reclamation Phase Approximate Time Period to Complete Cell 5 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 5 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase Cell 6 Backfill approximately 4 3 acres to grade Concurrent with Mining (see Table 6 4 4-2) Within 5 Years of Commencement of this Reclamation Phase Cell 6 Topsoil & Revegetation Backfill Area Within 1 Year of Completion of Mining Cell 6 Within 5 Years of Commencement of this Reclamation Phase Cell 6 Construct Compacted Clay Liner Within 1-3 years after completion mining Cell 6 Within 5 Years of Commencement of this Reclamation Phase Cell 6 Topsoil & Revegetation Remaining Area Within 1 Year of the Completion of the Cell 6 Compacted Clay Liner Construction Within 5 Years of Commencement of this Reclamation Phase Amen Aggregate Resource Specific Exhibits Page 19 of 84 (f) Descriptions and Specification of Reclamation activities (i) Final Grading Final slopes will be graded to 3H 1V (ii -v) Seeding, Fertilization, Revegetation, Topsoil Placement Topsoil Replacement / Revegetation Topsoil will be replaced to an approximate depth of 8" ft for the areas shown in as topsoil/revegetation areas in Exhibit F Sheet 1 Seeding and Fertilizing The proposed seeding areas are shown on Exhibit F — Reclamation Plan Map, Sheet 1 The recommended seeding method is by drill and seeding rates assume this method The species composition of the seed mixture recommended for reclamation is shown in Table 6.4 5-2. Recommended Seed Mixture Table 6 4 5-2 Recommended Seed Mixture Species (Variety) Rate — pure live Native/ W/C seed (PLS) Introduced Season lbs/ac Thickspike wheatgrass 8 0 to 10 0 Native Cool (Cntana) Sideoats grama (Vaughn) 5 0 to 7 0 Native Warm Switchgrass (Nebraska -28) 4 0 to 6 0 Native Warm Alfalfa (Nomad) 3 0 to 5 0 Introduced NA TOTAL 20 0 to 28 0 Based on this seed mixture, an application rate of approximately 20 0 to 28 0 lbs PLS/ac will be used Topsoil should be disked prior to seeding It is recommended that fertilizer be utilized for reclamation A standard application of fertilizer will be used and applied at a rate of 250 lbs/ac as shown in Table 6 4 5- 3 Fertilizer Application Table 6 4.5-3 Fertilizer Application Fertilizer Standard rate lbs/acre Diammonium phosphate (18-46-0) 250 (46-53% available P2O5 with 18-21 % N) Amen Aggregate Resource Specific Exhibits Page 20 of 84 Fertilizer will not be used near the edge of the reservoir, since the possibility of nitrate contamination in the pond water exists The total disturbed area to be seeded is approximately 39 4 acres The total area to be fertilized is approximately 39 4 acres Seeding and fertilizing will be completed after the overburden and topsoil is replaced, smoothed to conform to the existing topography and disked Optimal periods of seeding are in the fall (after November 1st) or in the spring from late March up to April 30th Mulching will not be completed as the quality soils and availability of water should facilitate the rapid establishment of perennial grasses Following revegetation, weed management strategies will be implemented to facilitate and achieve native grassland Years 1 thru 5 following revegetation will include an aggressive mowing program to prevent the growth and establishment of weeds, specifically, eight noxious weeds including Canada thistle (Cirsium arvense), Dalmation toadflax (Linana dalmatica), diffuse knapweed (Centaurea diffusa), leafy spurge (Euphorbia esula), musk thistle (Carduus nutans), Russian knapweed (Centaurea repens), spotted knapweed (Centaurea maculosa) and Yellow toadflax (Lrnana vulgans) as mandated by Colorado State Law (35- 5 5CRS1990, 1996) If needed, herbicide application will be applied as needed to further control these weeds Herbicides will also be used to control salt cedar (Tamanx spp ) if it becomes established in the reclaimed area Table 6.4.5-4 Recommended Herbicide Application defines recommended herbicides, application rate, and time of application for each of the 9 species It may be necessary to replant treated areas Table 6 4.5-4 Recommended Herbicide Application Weed Species Herbicide Application Rate Application Time Canada thistle Curtail 2-3 qt/ac October or 1 mo after last mowing Spring or fall, during rosette to bud Clopyralid 2/3 - 1 pint/ac growth stages in spring Spring prebud to early early bud growth 2,4-D 1lb ai/ac stages Spring prebud to early early bud growth picloram 1lb ai/ac stages Dalmation toadflax picloram 0 5 - 1 lb ai/ac Fall picloram + 2,4-D Pre -bloom or fall Diffuse knapweed Spring rosette to early -bolt growth Tordon 1 pint/ac stages BanvelNanquish/ Spring rosette to early -bolt growth Clarity + 2,4-D 0 5 + 1 qt/ac stages Amen Aggregate Resource Specific Exhibits Page 21 of 84 Leafy spurge Musk thistle Russian knapweed Spotted knapweed Yellow toadflax Saltcedar Curtail Transline Tordon 2-3 qt/ac 2/3 - 1 pint/ac Spring rosette to early -bolt growth stages Spring rosette to early -bolt growth stages 1 qt/ac Fall 1 month after last mowing Tordon + 2,4-D 0.5 - 0.75 + 1 qt/ac Fall 1 month after last mowing Vanquish/Clarity Curtail dicamba picloram Curtail picloram picloram 1 qt/ac 0.25 lb ai/ac 1 lb ai/ac 0.25 lb ai/ac 1 lb ai/ac 1 lb ai/ac dicamba or 2,4-D 1 lb ai/ac picloram or dicamba imazapyr imazapyr or triclopyr imazapyr or triclopyr 1 lb a i/ac Fall 1 month after last mowing Spring 10-14 days before bolting Spring 10-14 days before bolting Fall, apply to rosettes when other plants are dormant Fall on dormant plants, need to reseed during following year Anytime Anytime Spring during flowering Late summer early fall foliar application To resprouted stems To perimeters of cut stems immediately after cutting Sources: Colorado Natural Areas Program. 2000. Creating an Integrated Weed Management Plan. http://parks.state.co.us/cnap. and Colorado State University Cooperative Extension. No date. Weed Management for Small Rural Acreages. No. 3.106. http://www.ext.colostate.edu/PUBS/Natres/03106. html Amen Aggregate Resource Specific Exhibits Page 22 of 84 Alternative Reclamation Plan There is no alternative reclamation plan Amen Aggregate Resource Spec►fic Exhibits Page 23 of 84 1, SPILLWAY RIYITMINT ARIAS SUMMARY - jJ(4ND MUM �- POND 1 INLET SPILLWAY RIPRAP AREA 0.03 1219.16 EDGE OF ASPNKI ROAD • _ : 1 FENCE , ` POND 1 INLET SPILLWAY SOIL CEMENT AREA 0.03 1251 21 • ANADARKO GAS ONE ' 4..-6.,..41--_-.9,..).-' �_ v - - -^- ,-_ t . t • - _ _. __•- _ _ - --r'� _._ POND 2 8 3 INLET RIPRAP AREA 0.03 1377.91 ti,, yNCtAR (tNIUO) GAS LINE rr POND 2 & 3 INLET SOIL CEMENT AREA 0.03 1398.79 x, , a mill• L__- e, + � `� POND 2 k 3 INTERCONNECT SOIL CEMENT AREA 0.03 1500.00 DCP GAS LINE ( ) TREES (PRwAR0.r COTTONWOOD) , {` \' Y` •., :.\\N, `\ 1C •..�• POND 2 & 3 INTERCONNECT SOIL CEMENT AREA 0.02 1059.28 PARCEL BOUNDARr \ \\ POND 2 & 3 OUTLET RIPRAP AREA 0.03 1395.56 (SURROUNDING) PETNDARv \ *\ ILa l; .,\?.,\?POND � 2 & 3 OUTLET SOIL CEMENT AREA 0.02 907.66 Ow -5 \\ POND 3 PIPELINE EMBANKMENT SLOPE 0.98 42729.38 SECTION twt Nr — - • `\ �' -\ POND 4 INLET RIPPAP AREA 0.06 2819.59 RIGHTcora WM RICNT /. • CF wAr (ROAD) POND 4 INLET SOIL CEMENT AREA 0.10 4263.83• - RIKR/CANK ; . ��\ • . . • POND 4 OUTLET RIPRAP AREA 0.08 3337.01 E 1 • , • • • • ' , POND 4 OUTLET SOIL CEMENT AREA 005 2023.70 of .. • • \ Limos awwG • ' ' ' ' ' ' ' ' MILL R BRUSH POND 4 PIPELINE EMBANKEMNT SLOPE 0 61 27845.26 FINALIIW GRAD( CONTOUR 5 FT • • • • • •' • • DITCH - (APPROATE) \ \ POND 5 INLET RIPRAP AREA 0.03 1364.18 FINAL GRADE CONTOUR - 1 FT r sa (APPROXIMATE) �rr }() -.�• —7---7.,.... •\ • • • • • • • -' :�►..Y . 1 I POND 5 INLET SOIL CEMENT AREA 004 1730.18 500. CEMENT AREA •. • • CELL S • • • • �.� POND 5 OUTLET RIPRAP AREA 0.03 1406.23 t . , � ��TATIoN AND TOPSOIL AREA I\ -116 POND 5 OUTLET SOIL CEMENT AREA 0.03 1410.96 .``�� PROPERTY BOUNDARY • • ��• /, r 3 - F::3 N�1 POND AREA l JJ � ►� • • � • • • • ••• • • ^^ • I ` \ � ` I POND AREAS SUMMARY GROUNOwAtER oBSERVAnaN Ku.r � \� `�..,`_„ �OW-7• I; \ i / • i.^../......./..... '`\, .•'••.• �. PERMIT BOUNDARY . T OW -6 POND 1 10.99 478646.96 - - - • • ."--•• z---7 _ '.�. ({' ,1.... % - - RIYIGITATION ARIAS SUMMARY • • ......................."..9. ................._^. / - POND 2 7.02 305904.32 . �� \ S•1 POND 3 402 1)4995 68 I` • / \. + .^^^...._n...._.^^^........ -� • . - . ' CELL 1 REVEGETATION AREA 13.12 571377.44 il'/ --� rysJ' P�. POND 4 26.59 1158333.20 • • • • •ti �__.. ' •_ �h• " %\ `' /� POND 5 12.29 526450.64 CELL 2 REVEGETATION AREA 6.66 289907 55 .• . . N \ j• ~'�-.- • . • ► • • • • `., CELL 3-4-5 REvEGETATION AREA 15.40 570620.81 \ _ .. 1� 1. ... \ ,. , p -....-.-•-^'""e ._ h. - 1"--.., / _�� .. .: -, .^_1 -.�)gs •� • - •:•\ t\ ;.� _• �'•• -` o 'o as CELL S REVEGETATION AREA 995 433637 73 \40., \ \ 9 — F ew A:N24,• \ \\�\ ,_. n n_1.. ,r.^_1.,.. .� '. .^ I �\ ^ • ._ \ .^ .n 1 /.l.. ./ 1/•. ? / �COULSON/ 4...... \` \ \ CROISSANT N \ \ f �` / td•,�\ \ . s. . . . - .. - �� i /1 / .. _ PO1VD 5 , ^ _ PROPERTY LINE \ \ ......„..1/2. •,J1 1N 1 * • • �L 7/^� �� P \ ` • • , /'l /' I (_�i\/ _^� ( Q` / ^_1�/ J....1 /\ I 111• \ ( • - 1 /. /�_... /../. "11 i ,.. "1 Jo...._- ^ "/. _(...../..,...-1.. 1 I CELL 4 \, • • �� _ -/ ��_ . ��`"�'•, �' • • • • • ._,^,.. I. 1 0( ....__._",._.^�._--, ..—,^�-...� 1111��.. • -' ..JY /•,••' �' ' •• �. +. ,/�_'. `1 ./�I. L.S _'./a_.^. r. -/._1J\./. J-. /�J.-, 1/4 70 S. \\�• \ \ ! 1 .. , // \ .1 I n .. • • i I.\/\/.- 1 EIN./..'././._nla\_1l./\-•-I-"/._1l -",_A. ®r�► } � Ow- 4 " . �\� � .,_, \ \ r ( - - f / ` .-/:> • \ \ \\ _,.'-•r //// i .... ,. ,.. ' -- ...,, CELL • • ! : .....� . V R• I .,.........BPD 1......„.................... , �...._ .�..._ �,.,._,...._� \ a SITE ACCESS \'� �� ` /'" ( sr �yo -.-r _r 11. _•,,......,.^_•..... .6.6.-.0%._.1%...^.."...-%.." t. • :), I1 l;' 1 \1/4.. �_ - i"• i i„......"{ 1 • L \ r -t -�- 0�r I /. J./. „\/. a. 1 a a a a - - - a . - L - )' L�� • 4/83 : r t 1 2• . • \ \ ter- - . . .. \ + t7 5 ; rI CELL 6 POND 4 CELL 3 \ .. � �. I ,,..... : I : •. • 11..^.^^_^_../ ( \ ,,,�,: „_,^ SUBSURFACE DRAIN CELL 1 , •,,,._ - I I; • ' ,/ ..^...... ��ti. "� \ y � (SEE EXHIBIT G) \ . EW-1 - - - 4790 - , 1\ - ! -� 1 Z .. cam`........ ` \\N • 47795 _ — I [ ' A t _ ♦ !'`\ �•`1 �` 4800 I •I • 1...'. J..^.._1I\L... \ \ \ \ , - 1• _ 4805 — ' • •tit • / II M' PROPOSED ANADARKO PIPELINES AND I SOFT EASEMENT . ' ' - ` ►� y _� ^ . , J • r : I 1 I ,.r N./`- ^ _'. /..". i..` `� ten.._•. 4780 - .•. i \ \ . • •�� .�� \ \ •......••....-r•......_•... i • \ `' \ --- \ \` Ere- 3 ow 3 I _^- • -(._•..\.�_-..\^ _.^ .-• ti .._....�- .,.,_ ^ \% t . •• • OW -1 \I .. ll ' k �.;; • •� 4785 • • .••••• , EW-2AI 1 \\ " ��-f • -SS •_•• • J`� NNII•{.. '. 'I0M.rI1 —�`R+ rfti ~�'•� "5 -f'4�- n.—. .. YI - -r - "--ti T r- •— --`-`�- _ _ _ f - .. _ _ __ __ _.1 T l T r ._. .' _. -� -} _ 7:__ -- • _ — —. — - .V ._.- - .T. =T :.. • -. �.�...-� -.'— • •- ." ` --'-7--42..—. -ter ' .-- a ,.• _--• : 1•'_w.'_� • -...--1,—..- .• _ —t —_._.- t .�. 1•--oa'. t- . -.�--�r-t--sS.. - t •---••••••---T _ .� - 1—' `�1--- �'OW - _,„ -. ____ ? - - - s' _ - .. � _ _ R�� -� -j V - �r -_ _ I _' _ .-._ a — �, —. s.rn:.r a :•46.--.ee►ts-= -� SE CORNER y — r _— .-.Na .a .0 us.��• s .. rrA SECTION CORNER •IW �. A' ;:. _ •-' - iv. OF THE SW I RV �A - -A _ — ^-. -, •• SECTION 19•TSN,R67W _ •TILT —� =, �•_ s•+. ra - :� c, X _ . _ — -- — - - - - , •w*fa. -_ .. u� l REVISIONS SmWelland. Inc.ental & Engineering PO *WI WOW 80UtiK1 CO 90308 ph 303-443-6621 AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS APPLICATION WELD COUNTY, CO EXHIBIT F RECLAMATION PLAN SHEET 1 .r, CA M'ID'I +. as L • An b a 3 1•=150' EXHIBIT F.DWG REV tie rr.aro.4, COULSON EXCAVATING CO., INC. r>►N.+»r cTw r..rep.' a u• PEW err 10/1512019 .-.re+ of 11 CELL 1 4810 — 4810 KEY 4805 r"tr"s„Eo GROUND - 4600 •• 4605 PROPOSED COMPACTED — -W�� 4800 CLAY LINER 4795 '• 4790 + •�_ suswRrAtt ORAIM (SEE Enylt G) A i 4 795 4785 _ -- -_ - '._ APPR04WA1E LIMPS O< 1NNG �ACKFILL ARE , G/ 4790 LIMITS OF MINING r� 4785 4780 - ` ;/ '— -* — _ _ -_ -. , / 47� FINISHED 4775 _ _ GROUND f J1� N f � f f $ fQ$�pNp F `.. ♦ f rj� §p f f NN 4o f On qn f f f *— 08 pN f f pN �n f f qN f no f 4775 i 40 Ile tMI nil a rN 0+50 1.00 1+50 2+00 2.50 3.00 3+50 4+00 4+50 5.00 r 4810 CELL z WEST CELL 2 E. A S T 4805 rMRgrtO circuit 4810 . • 4805 4800 — — — 11, 3 4MAJ?�ELLY'414fl71Z — - - — I - 4800 4795 - — f ' P LIl4RS6l O SlEY_47253 4790 AREA ` ' 4795 „rm. - 4790 _ 4785 C 7, APPROKKAATE Limn of boom. ` Anolox1W It Lasts Or 44NNG• 4785 4780 - Nh 2 nn� m qA� O n� 2rp O. pp Op rp N0 p iE oo 0,Q ow zs al O,0 0p r0 n4nR n nm ro n - . -- h� n D FeeO n f Om ,�pp f . p f NI O. f Dpi n a r f 4780 0+50 1+00 1.50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 CELL 2 WEST _els, - 4810 CELL 3 CELL 2 WEST h. 46 4 4810 .r. 66 0" - 4805 oono 4 • 4805 TAA CEKKrrT @LOCKS '' °040 3 4800 - _lmRM& P4DLJLLvi.7411_ — — 4800 -.E01MAt`Pc9L_E1.0_-33r-_. R- S.aCLia PIPELINE r• 3 4795 75, y_ 4795 A f -�• 4. 4790 --_ --- 3t - _- SINCLAIR P PELINE SINCLA R PIPELINE -- _ 4790 ►6n 4611 ° 4785 -� -- - STA 1+16.83 STA 1+32 78 -- - j ___; 4785 ELEV 4796.00 ELEv 4796 00 _ PROPOSED - - 6 7W .� a 4780 -• • -' 4780 ANADARKO PIPELINES 4775 STA 1+75.55 ELEv 479680 4775 0 TYPICAL SQL CEMENT QUAIL 4n 0+50 1.00 1.50 2+00 2+50 4815 CELL 3 4810 rRR4sncO cROlwo 4815 , 4810 4805 1 4805 4800 • N. N.Q. 4 NQRM&L• Q•QpLlLF;_v_.=47Q� 4800 4795 fr ACKru AREA 1— 4795 4790 �� -:r .+ 4790 4 785 \ AP►ROOIATE LMTS Of 444rrG ` ; -- — —_ 4785 4780 4780 4775 f et ft f n h lea to ,4 f N N f f � np N +1 la m f f N n Jt ry g o P. f f O 001 r0 ry N 03 �� f f f b n no N � f f ,O ♦ n O ry N r.o om f f J1 co OI N N m f f O, O as f N f 4775 - - - 0.50 1.00 1.50 2+00 2+50 3.00 3+50 4+0D 4+50 5+00 5+50 40 a REVISIONS y-\IJ -,, AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS APPLICATION WELD COUNTY EXHIBIT F RECLAMATION PLAN SHEET 2 .., X.r4IP,v, WI ..n4.r.To E environmental 1 Weiland. Inc. & Engineering fL„ 1"=20' 3Ao,o. EXHIBITF.0WO 4, , REV .10 dal WOW aout.x .1 t U 9030f1 30.3 443 gel Alt Vain l)'Is COULSON EXCAVATING CO., INC. ate. cTw OW' PFW y 1 011 5/201 9 SHEET 2 OF 11 ph CELL L 4 4815 4810 4805 4800 4795 4790 4785 4780 4815 4810 4805 4800 4195 4790 4785 4815 4810 4805 48X) 4795 4790 4785 4780 a ID LlEY-0A 86 21 ++87 O 0 t. • ♦ ♦ APPROXIMATE LetS Or as* • Q 0 O n ♦ oN N • HOn-AA f'4 N Np • a a IA b f co a a f D V n a OY O ♦ N a in O .N Q ♦ N O ♦ ♦ N IA a ♦ N IP A IA O n ♦ V ✓7 O Y 0 + 50 1+00 1+50 2+00 7+50 3+00 3+50 4+00 4+50 5+00 5+50 •815 4810 4805 4800 4795 4790 4785 4780 CELL 5 r INMS14D GROUND F.__�APPROIWA TE LIMITS OF OWING -4 - /--B.CMr ILL AREA 0 • a a Poc“Lit X47' — 8 f 8 ♦ O a ♦ a • a O or or N N an ♦ a ♦ Q a m f n O N f a Q S • a n a ♦ 8 N IS n a V 8 m Q pNpI OI a • N a n a V O M1 V a r* a a 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 4815 4810 4805 4800 4795 4790 4785 CELL 6 VNNISHEO GROUWD • • *oat'. AREA _yes APPROXMATE Lw11S Or MINING 4815 4810 4805 _ . L Poa (LE�47y2- _ 4800 4795 —3= _—_— _— — 4 790 O O ♦ N 0 n O ♦ 2 N C f on pNp OI f1 N N F. ♦ ♦ n O r Q ♦ 4785 4780 0+50 1+00 1+50 2+00 2+50 3+00 ADA KEY PROPOSED COMPACTED CLAY LINER ----- LIMITS OF MINING FINISHED GROUND 7P � P.S 4915 m6HE S1 GROUNOWA TER 4610• CONDITION FOR WIE DIE 4105 - 4100 4795 • •790 4755 r •790 r PROTECTIVE SOIL COVER (SEE NOTE 3) 10 0. MNIMUM INER POTH Al PATER TABLE — Lye KE•IPAY �� (SEE NOTE I) COMPACTED CLAY LINER (SEE NOTE 2) WEATHERED CLAYSTONE - 4115 •5l0 - 4900 - 4000 - 47115 - 4790 - 4715 4.0' 1 fENT CLAY$TONE 0.00 0.50 COMPACTED CLAY LINER - TYPICAL SECTION *CULL I (EYWAY SIDE SLOPES SHALL BE VERTICAL OR A MPaain OF D.&I IV (EVWAY MOTH SMALL Pt A MNSUM OF 4 VI KEYWAY DEPTH SHALL S E A MINIMUM OF 4(1 OR 10 REFUSAL BY .0 400 OR SIMILAR. THE KEYWAY SHALL SE FILLED NTH COMPACTED CLAY MATERIAL N MAX 8 LILTS 10 952 STANDARD PROCTOR DRY DENSITY Al 0 TO +32 OF THE OPTIMUM MOISTURE CONTENT 7 THE COMPAC TEO CLAY COIL SHALL BE CONSTRUCTED or PROCESSED ANO MOISTURE CONOITa CO R EA THERE() CLANKED* MATERIAL BORROWED r NOM THE PIT FLOOR. THE MATERIAL SHALL BE PLACED N I• LIFTS 10 952 STANDARD PROCTOR DRY DENSITY Al 0 10 •32 or THE OPTIMUM MOISTURE CONTENT raLl0NN0 Pt AC:LNENT, EA01 till SHALL BE DISKED TO A DEPTH Or 2' 10 ENSURE BONOINO BETWEEN Ur TS 3 A PROTECTIVE SOIL (6'"B- DEPTH) AND VEGETATIVE COVER SHALL BE PLACED ABOVE THE PATER LINE AND E(1ENDNG ACROSS THE HOR12(NTµ AND SLOPED LINER EXPOSURE ABOVE THE NORMAL POOL ELEVATION 4780 REVISIONS ,)I M 4p'�,•, Weiland. Inc. Environmental & Engineering PO JON WOW POUtik. cc BOMB ph 303.443-9621 AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS APPLICATION WELD COUNTY EXHIBIT F RECLAMATION PLAN SHEET 3 1 "=201 GAO ..L EXHIBIT F.DWG c. REV IMP RAID I) 144 COULSON EXCAVATING CO., INC. GA µ.li e. I r.4entoNY CTW I PFW VII 10115/2019 SHEET 3 OF 11 0+ 25 4810 _ 700 2+60 SOIL CEMENT TYPE W RIPRAP 4800- 4790- 4780 - DATUM SUY 1t1P wS.EL A 4796.17 FT — - 'IN --Cron WOW 00222. SPILLWAY 90TTOY City - •797 37 200 ti/ —am PIP( Vt WRAP If? NICK CLASS + ttioa6G 6 t'•L7i 20 ' PttSOE SLOPE i t NORVAL POOL wSE t - 47000 FT 6' rOPsOSt • Ka TOED COVER SOIL OMEN? 61#1 6FT SOD, 4810 r-4800 4770.000 0+00 REVISIONS 0+50 Environmental II Engineering PO DOE SOW soutODI CD COO ph 302-4fl.W7 1:1+`75 1+60 Alit elk,. 1+25 1+50 1+`75 AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO COULSON EXCAVATING CO, INC 2+00 2+25 ,-4790 -4780 4770 2+S0 2+60 6 Tn IIE OM In EXHIBIT F - SHEET 4 POND 1 INLET SPILLWAY SPILLWAY P&P.DWG 9/1512019 NORMAL POOL *S.C.L - 4797" 4810 _ 0+00 • • • • • • • • - •• • • • •• • • • • • a • , • • a • • • • • • • • • • • a • ♦ • • • 4 \•t \ • \ \ • 4 \ \ S \ �. lUMK sat- Erau51K SOFT ANADARKO PIPELME EASEMENT • \ \. S • • • • • • FUTURE ANADARKO MPG MES • • • • • • • • • • • . Sao CEMENT • r • a • ♦ • • • • ▪ • .4 . . • • • • • • • a • 1 • • • , • • • • • • • , • • • • • • • • • • • V • • • • • • • , • • • • • ♦ • H a • •- • • 200'. �� 2S0' • • J r SKY SLOPE • TOE asIDENo:\ 4 • 1+00\ \ SPLL war sorrOM ELEvAtot . 4f00Z' C, • N. T 90C SLOPE • \ •N • . - TYPE Yt RIPRAP N. • ;]- - r� < 200" • • 2+00 • • • • • • • REKGETARON AREA • • 11' \• \_ • \, • • ' \• \%\ \• 41' \ \ • PITSOE SLOPE 11 4800 -- NORMAL POOL R.S.LL - 47970 Fr - r 4790 - DATUM SLIT • SQL CEMENT 11•N RFT NOM e tins 4785.000 0•DO 0+25 04150 S u&nr sloe aims TUa CCNTERI t OPTS( 42 SET La ELEv-48O.0 2 0• • nanEtrip (Po •MAr ROTTGM FLE VA LION - 4R00 I• fOPSQt f KU TA TED COKR lu DOE ANADARKO UNDERGROUND PIPELINES M. DEPTH a S -D' 1+ a 20 O. TrPE K WRAP 1!T D CIL • CLASS • etooNG 6' NMEP 0+75 1+00 1+`15 • til 1TR N.S.EL - 4in.arT h2,IANN•IL NKn 11 - •S-41 /I 1+`75 \ • 4810 -4800 -4790 4785 2+00 I \ / N \ \ / / q 10 m mirj Tw I I I I I I I I I I I / / / / / simrsdia Ts F•r REVISIONS ueK W r•», >A'r 11 Weiland. Inc. Environmental & Engineering PO dOl 18081 EMIR R CO 90300 ph 303.443.9521 AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET 5 PONDS 2&3 INLET SPILLWAY 'SLY1 1"-10' OSLO "6 SPILLWAY P&P.DWG •f , REV COULSON EXCAVATING CO, INC 0• •\ n F cTw PFW 9/15/2019 •wl� 5 OF 11 a a a a a _ _ a - - .. _ a a a a _ _ _ - _ a -: r a a - a _ a a _ a .- a a a a .a a a a a _ a a a a a _ r •. NORMAL POOL t s t t - 4791 • • . • a • • • • , $- ► • . • • a ... a - a a a a a a r r a a a - a a a a a a a a - a • a - a a a S ... a a a a a a a a a a </Pk Ina . s_ . .. 1 a c.. a .t• t -Oa . •� I L. r. • - • . 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AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET 6 PONDS 2&3 INTERCONNECT ,c 1--10' o AO ,u SPILLWAY P$P.DWG TREV COULSON EXCAVATING CO, INC c1.w M1•Al0•. PFW 9/15/2019 6 OF 11 - -• - I R[VfGCMTEON AREA I I I _ _ ... __ _. _ _ _ -. _ _.. ._ _ • I 1 NORMAL POOL WSE- 479S __ •- — __ .._ .. — -_ _ — . .. ... _._ I I NI�' "Go :At :liAi��i�ii� ��I :��•�' 3+08 - �. III A►.I�I/I� �.1�;1►�rr�!il 1 — _ - - - - - - �" ` • ._ _ .r —. �. •— lal .r,_ -- .•` . _.r. a .` - • • • I.• • `.. ,I;,1•,1�.• -fir +�-.�_r _ _ _ ._ — — — .. . 1 S♦� GMANNEI SL �E..� �•1 ' 0. • •_ '. Y •• 41 �r �•_��-• - _ _ - - _. _ _ gas - - - _ .�,��•,'', .1%= 1 . . • `�.,� ._•._•._•._ — — .,_ _ _ _ .... _ _ �. _ _ _ ._ _ _ ._ •� - _ • • 6.0 • 479 •t .�1��1. 200'x:16 1 �� t, I/ Imo• ••i+'�i�� v'�:��•�` \ •�� : �� •� ' ° a. t • RIP RAP_ . - - _ _ _ _ _ _ .TYPE VL NATION • e _. .. _ . 6 T10M"ELE • .. - �' ��: �.Ar�1.�,.. 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CEMENT ANN 81 SON E' LIFTS 9- (}1 tr ViatifN iO A• TI+IC• MANNEL INVERT 4790.36 4780- - - —4790 TUN SLAV DA —4770 0+25 0+75 1425 1+75 4710.000 0+00 0450 1+00 1+50 210:) 2450 2+75 o to m _ 1.8 lia — i•M REVISIONS 1� '1'� F Weiland. Inc. AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F ad SHEET 7 PONDS 2&3 OUTLET SPILLWAY Environmental & Engineering a0dal( WOW a0010Ca CO 90700 p, 303 443 9527 MCut 1"-10' WC NLi SPILLWAYP&P.DWG N.. REV COULSON EXCAVATING CO, INC o<w1..ors CTVV C., c'.E0/• PFW u °9/15/2019 f 1 7 of 11 ///////// NORMAL POOL W S E L • 4800' >{ ' I / I / i / [flflTAAflA tom, in • Aoiro,t ire%•0 :�l:ii.!��•�! :.,.�; :►.,!..!• r Wei riorel nag" al rrif%tte 4,40:' /• '`- ttawara .t��.�'•rc,-,*mss• %.--eqbA aver cor�rbe.etV de / J. I SILO SLOPE 'l= �!1 titemil rOf e�:Iid,a'ii �.1�: !► 0 i, �ter � / •^� • :•Aite. sag0b4111404.01•6 Vseb•Selltsa4%tebet a.!�F,91:10 Mg* i 7 . r� 0+00 t+00 . •.50 •� iesia� Swats ... 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CLMENa MIN MT NOM —4790 r e• ulls I I SOIL CEMENT TO DEPiN OF BEOROCK • . DATUM scsv r 4780.000 0+ 00 0+ 25 D+ 50 o+`7s ,+oo t+zs 1+ 50 '+17s 2+too z+2s 2+Is0 2+79780 o ,0 w NE is NE j Fat REVISIONS Fnv/ronmentalenta! Wellandnc. & & Engineering .'0 dui 1808/ d0ULJi-R CU 80308 `h30341395zr AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET POND 4 INLET SPILLWAY 8 u.,r 1"-20' OAGbG SPILLWAY P&P.DWG •n REV COULSON EXCAVATING CO, INC cw. .r••... cTW en:e,•roY. PFW ' '9/15/2019 8OF11 U+00 ORMAt POOL N S f L - 4800' • • • • • • • • • • • • a 4 0 • • • • • • • • • • • • • • • • • • • • • • • • • • a • • • • • • • •• • ••r •••• .a a. lab era _ • a r— • • • • .• ♦ • • • • •a 4 -i • .t • • •. • • • •.1 4N• Y •..� .-•• • • • •• • • - • • • •. • • • • 4 • • T • `. •is • -a •. •• • �• • w• • . • • • . • • • • • .4 ••••• _.a ••••• • x I . 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Inc. Environmental & Engineering PO SOS M ® dENILSER. w MOOR oN SW-405-aB2t AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET 9 POND 4 OUTLET SPILLWAY •:.., 1'-10' SPILLWAY P$P.DWG REV a aw. COULSON EXCAVATING CO, INC )A• N •• CTW PFW 9/15/2019 • 9OF 11 I I I I I I I 0+00 ••,,a4490460` , %be • ;�•;,;•; ;.;••LV•.: 0:6411851. `Slit‘Otbillk • 1 •� ,••r•r•,,,,••' •,•••,,••arcie.t • 1 S•Ibit4C.144041100 :TA PartibeteAtS•Naln, iSnlithritteritiMietWeis ,1•• • Mq)•?in 49• 1 ..1. ". w • r .4. .w .-a •..• .w _-. •w. •a. ...• • •.r •... •.a. ..•. •ra .� •r. . ail } •-.a .w IOC 0f sot stoic lab r ... i .w • ! 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Inc. taunantal & Engineering PO NM feces aauu�a CO emcee oh .103-44.7-9621 AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET 10 POND 5 INLET SPILLWAY 1 "-10' k SPILLWAY P&P. Don Mt . REV COULSON EXCAVATING CO, INC p• A• U• CTW --err )•. PFW 9/15/2019 a. 10OF 11 I 0400 482 481 RCVEGE rAnON AR(4 ale - • 1s *ditto. _ • spa 4:D9n�re�j�*10�00 - *** Itiebicatte. 44,001.. cr. iteNrigive owe *neeit �;,��OLL/ o!i_t!i!, is • .:1/4.; �. •A•AA -�t • alb .— .._ '— \ .— ..- \.- ▪ .. .—ice •.... - a .r .- •-. ._ •r • .-. • • - a_ + -r - • • • _ • . • )7 1• SPRt SAY BOFtOM fULVAAON •SQf 9) • • • - • • . r • • • Y• •- 7 • 1 20 D • • • - -. ...•- ttPf n RPRAP 3.1 510[ SLOPES - / • • • 1+00 4 • �• \ I \ NORM.AL POOL e S C t - 4801 5. • • • • • • • • . _I • • - • • la a SlOf StOPf SIO • SLOPES IND • a • • • • • • • • • • • • P • • • I• • I a • • • • 2• GU 1 D i0 al In 1 rR R St. • •800 91 It 480' i i i 4 79 WAERF (Unlit* - •7n6 Fr DATUM ILLY 4780.000 0+00 20 0 Fyn n NWRAP f t 7N•ac CLASS • 6l• lareG 6' THIC• 10 0' tl._. A .•., .•r •1 1 Na lion IV 1.0 8" TOPSat & AEG(?AWD CO•ER H ISO( SLOPE J I R4RM LP00t R S t \ _taw L 5 FJ i ri set CLKN1 ANN 811 NID,N c 9� LIE l$ i t f t Z • L t- lam' 4820 -4810 0+ 25 0+50 0+ 75 1+100 1+25 1+50 -4800 r-4 790 1+75 4780 2+00 D II x; Inina•r REVISIONS 4. LC•h I) '' W .• i Y • J WS! Weiland. Inc. En vu onrnenta! & Engineering PO dun% 1Htlll/ •antll.k:1 t Cl HCl-ION ph 30.7 44:1 !17.:'1 AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT F - SHEET 11 POND 5 OUTLET SPILLWAY SPILLWAY P$P.DWG REV COULSON EXCAVATING CO, INC J•. A I. Only :ntt•. OF PFW 9/15/2019 11 OF 11 6 4.7. Exhibit G - Water Information (1) The operation will affect groundwater systems through evaporation and pumping Predicted depletions to groundwater which are tributary to the Big Thompson River will be mitigated through design and implementation of a Temporary Substitute Water Supply Plan (SWSP) A well permit and associated SWSP will be acquired and approved by the Colorado Office of the State Engineer (SEO) prior to exposure of any groundwater onsite (2) (a) Surface water structures are shown in Exhibit C1, Pre -Mining Plan Map (b) The sand and gravel deposit to be mined is an alluvial aquifer tributary to the Big Thompson River (c) Water from dewatenng operations is routed to sediment pond to allow for settling of suspended sediment A stormwater management plan has been prepared for the site which identifies BMP's to prevent pollution to surface waters due to stormwater runoff (3) Under full operation, the project will consume approximately 5-10 acre -ft / year due to evaporative loss of exposed groundwater in dewatenng trenches, water lost within the mined product and water consumed for dust control (4) The replacement source for all depletions to the Big Thompson River will be either fully consumable water rights leased by the operator from the City of Loveland or other water rights owned by the operator decreed for augmentation (5) The applicant has applied for and received a NPDES Stormwater Discharge Permit The permit number is TBD Hydrologic Balance Surface Water To allow prevent the empty mining cells from capturing the Big Thompson River (BTR) during a significant flooding event, flood control spillways have been designed to allow the flood to enter the empty mining cells in a controlled fashion and therefore mitigate the potential for river capture The design theory and calculations are given below and the spillway plan and profile design drawings ae given in Exhibit F Sheets 4-11 The spillways are to be constructed immediately following excavation of a mining cell Spillway Design The spillway design is generally based on the principals and methodology given in the Technical Review Guidelines for Gravel Mining & Water Storage Activities (TRG) published by the Urban Drainage and Flood Control District (UDFCD) in 2013 Other methods in the design include application of HEC-RAS non -steady flow modeling to verify the adequacy of the channel sizing derived from TGR methods in the largest cell Chapter 8 of the UDFCD manual was also used for sizing the slope revetment of the spillway inlets Amen Aggregate Resource Specific Exhibits Page 35 of 84 The length of the side channel spillways was determined based on the following relationship Ls= 0 6 Ap/12,000 where Ls = length of the side channel spillway Ap = areas of the pit measured in ft2 at the high water line Table 6.4.7-1 — Side Channel Spillway Length and Elevation Calculations below gives this calculation for each of the Ponds The elevations of the spillway channels (crest) set to 1 ft above the 2 -year flood water surface elevation (WSEL) The 2 -year WSEL's and the spillway elevations are also given in the table below The 2 -year flood WSEL's were determined by first running a HEC-SSP Bulletin 17C Flood Frequency analysis model with data from the Loveland Stream gage on the BTR The model inputs and outputs are given in Appendix 6.4.7 -Al HEC SSP REPORT. The resulting value of 702 cfs was then entered into the HEC-RAS model developed for the No -Rise Certification Report (NRCR) prepared by Ayres & Associates (see Appendix 6 4 7-A2. The HEC-RAS model output for the 50 % chance flood event (2 -year flood) is given below in Table 6 4 7-2. HEC-RAS Model Output 50% Chance Flood Event (2 -year) Amen Aggregate Resource Specific Exhibits Page 36 of 84 Table 6 4 7-1 — Side Channel Spillway Length and Elevation Calculations SPILLWAY INLET POND 1 2YR WSEL 4796 37 1ft+2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 479212 Spillway Length Calc 4797 37 ft A p= Area of Pond = 497,082 59 ft2 0 6*A/12, 000 24 8 L5= Length of Spill = = 5 ft Length of Inlet Spillway = 25ft SPILLWAY INLET PONDS 2&3 2YR WSEL 479920 1ft+2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 4794 00 Spillway Length Calc 4800 20 ft A p= Area of Pond = 480,775 94 ft2 0 6*A/12,000 24 0 L5= Length of Spill = = 4 ft Length of Inlet Spillway = 25ft SPILLWAY INTERCONNECT PONDS 2&3 2YR WSEL 4796 50 1ft+2yr Spillway Elev = WSEL = Spillway Length Calc 4797 50 ft A p= Area of Pond = 480,775 94 ft2 0 6*A/12, 000 24 0 L5= Length of Spill = = 4 ft Length of Inlet Spillway = 25ft Amen Aggregate Resource Specific Exhibits Page 37 of 84 SPILLWAY OUTLET PONDS 2&3 2YR WSEL 4795 00 1ft+2yr Spillway Elev = WSEL = 4796 00 ft Adjacent Stream Invert Elev = 4790 36 ft Spillway Length Calc A p= Area of Pond = 480,775 94 ft2 0 6*A/12, 000 24 0 L5= Length of Spill = = 4 ft Length of Outlet Spillway = 25 ft SPILLWAY INLET POND 4 2YR WSEL 480269 1ft + 2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 4798 22 Spillway Length Calc 4803 69 ft A p= Area of Pond = 1,139,955 24 ft2 0 6*A/12, 000 57 0 L5= Length of Spill = = 0 ft Length of Inlet Spillway = 57 ft SPILLWAY OUTLET POND 4 2YR WSEL 479950 1ft + 2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 4794 90 Spillway Length Calc 4800 50 it A p= Area of Pond = 1,139,955 24 ft2 0 6*A/12, 000 57 0 L5= Length of Spill = = 0 ft Length of Outlet Spillway = 57 ft Amen Aggregate Resource Specific Exhibits Page 38 of 84 SPILLWAY INLET POND 5 2YR WSEL 480250 lft + 2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 4798 22 Length of Riverside Berm = 2300 00 Spillway Length Calc 4803 25 ft A p= Area of Pond = 542,074 38 ft2 0 6*A/12, 000 271 L5= Length of Spill = = 0 ft Length of Inlet Spillway = 27 ft SPILLWAY OUTLET POND 5 2YR WSEL 4800 91 1ft + 2yr Spillway Elev = WSEL = Adjacent Stream Invert Elev = 4796 00 Spillway Length Calc 4801 91 ft A p= Area of Pond = 542,074 38 ft2 0 6*A/12,000 271 L5= Length of Spill = = 0 ft Length of Outlet Spillway = 27 ft Amen Aggregate Resource Specific Exhibits Page 39 of 84 For HEC-RAS cross section referencing, see the work map (A2) given in 6.4.7- A2 No Rise Certification Report ' As an additional check to predict if the spillways are adequately sized to fill the mining cells before breaching the river embankment, a non -steady flow HEC- RAS model was developed utilizing the ground geometry developed in the NRCR for the proposed reclamation plan The unsteady flow data for the HEC-RAS model was developed by taking hourly flow points from the 100 year HEC-HMS inflow hydrograph published in the Lower Big Thompson Watershed Phase 2 Hydrologic Evaluation conducted by Jacobs Engineering in 2015 (see Figure 6.4 7-1 Big Thompson River 100 yr Inflow Hydrograph ) The flow points were normalized to a maximum flow of 11,500 cfs — which is the current flow value for the effective FEMA map in the vicinity of the AAR site Amen Aggregate Resource Specific Exhibits Page 40 of 84 20000 18000 16000 14000 12000 4- a 8000 6000 4000 2000 100-yr Predictive Storm Inflow H dro Y g ra hs p - Big Thompson River below confluence with Buckhorn Creek - 0 -- 0) E' 10000 ca sc ci cn b Little Thompson River at Mouth -1.6.-- 2/1 75% e DARF 2/2 70% DARF Time BT (days) 68% DARF BT 2/3 66% DARF LT 66% DARF 2/4 BT BT — FIGURE 6.4.7-1 Big Thompson River 100yr Inflow Hydrograph Amen Aggregate Resource Specific Exhibits Page 41 of 84 A lateral weir structure and storage area were defined in the unsteady model to reflect the geometry of the inlet spillway for Pond 4 and the storage stage - capacity of Pond 4 The unsteady model output for the spillway/pond structures is given above in Table 6.4 7-3 HEC-RAS Unsteady Flow Output for Lateral Structure (Pond 4 Inlet Spillway) and Storage Area (Pond 4) The table shows that the spillway is adequately sized to fill the empty pond before the floodwaters breach the river bank elevation of 4807 63 and therefore preventing flows from entering the pond outside of the spillway before the pond is full When floodwaters do then breach the river bank, full ponds will prevent large head differentials and therefore prevent head -cutting and stream capture The unsteady model was only run for the largest pond to test the sizing criteria used to design all of the inlet and outlet spillways The idea is that if the criteria works for the largest pond, then it should also work for the smaller ones Spillway Slope Revetment Floodwater velocities at the bank stations during the 100 year event were taken from the NRCR and used in the following formula to determine rock sizing for slope revetment on the spillway inlets D50 = {VS° 17/4 5(Gs-1)° 66] Where V = mean channel Velocity (ft/sec) = 9 46 ft/sec S= longitudinal channel slope (ft/ft) = 0013 D50 = mean rock size (ft) = 3" Since 3" angular rip -rap may not be commercially available, type VL (D50 = 6") is specified for the spillway inlets The horizontal and vertical extents of rip -rap for spillway inlets are shown in Exhibit F Sheets 4-11 it should be noted that for the interconnect spillway between ponds 2 & 3, soil cement is specified for the inlet This is deemed appropriate since interconnect inlet is not adjacent to the river and therefore will not be subjected to the erosive power of river channel floodwater velocities and depths For the spillway outlets and pit slope rundowns, soil cement was selected for the type of slope revetment The horizontal and vertical extents of soil cement for spillway pit slope rundowns are shown in Exhibit F, Sheets 4-11. Amen Aggregate Resource Specific Exhibits Page 42 of 84 Table 6 4 7-2 HEC-RAS Model Output 50% Chance Flood Event (2 -year) Reach River Min Ch E G Flow Froude # Sta Profile Q Total El W S Elev Crit W S E G Elev Slope Vel Chnl Area Top Width ChI (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) BT Lower 82986 50% 700 4798 29 4803 91 4800 31 4803 98 0 000377 2 17 322 61 80 38 0 19 BT Lower 82639 50% 700 4797 07 4803 84 4799 08 4803 89 0 000174 1 75 398 87 70 0 13 BT Lower 82435 50% 700 4797 23 4803 79 4799 51 4803 84 0 000279 1 83 382 54 89 35 0 16 BT Lower 82358 Bridge BT Lower 82282 50% 700 4798 82 4803 08 4801 99 4803 36 0 003005 4 23 165 68 66 45 0 47 BT Lower 81882 50% 700 4798 35 4802 69 4800 25 4802 79 0 000665 2 64 265 57 76 0 25 BT Lower 81549 50% 700 4798 22 4802 46 4800 12 4802 57 0 000738 2 72 257 82 76 28 0 26 Lat BT Lower 81095 Struct BT Lower 80999 50% 700 4796 8 4801 82 4799 72 4802 02 0 001791 3 62 200 22 89 33 0 39 BT Lower 80583 50% 700 4796 32 4801 21 4799 24 480137 0 001327 3 33 236 63 106 24 0 34 BT Lower 80219 50% 700 4795 83 4800 84 4798 71 4800 93 0 000921 2 42 289 35 123 63 0 28 BT Lower 79955 50% 700 4795 65 4799 74 4799 08 4800 36 0 008576 6 33 113 61 74 39 0 77 BT Lower 79637 50% 700 4793 88 4799 44 4796 8 4799 57 0 000998 3 01 262 76 119 55 0 29 BT Lower 79086 50% 700 4794 02 4798 58 4796 94 4798 85 0 002076 4 14 168 99 57 16 0 42 BT Lower 78753 50% 700 4793 53 4797 81 4796 45 4798 03 0 002689 3 76 186 8 96 51 0 46 BT Lower 77873 50% 700 4791 18 4795 48 4794 14 4795 72 0 002749 3 96 178 2 102 57 0 47 BT Lower 77656 50% 700 4790 55 4795 07 4793 16 4795 26 0 001429 3 48 206 77 105 45 0 36 BT Lower 76888 50% 700 4788 91 4794 89 4790 87 4794 91 0 00016 1 16 602 91 186 36 0 11 BT Lower 76839 Bridge Amen Aggregate Resource Specific Exhibits Page 43 of 84 Table 6 4 7-3 HEC-RAS Unsteady Flow Output for Lateral Structure (Pond 4 Inlet Spillway) and Storage Area (Pond 4) Storage Area Storage Area (Pond 4) Storage Area Stage Stage Flow HW Flow HW Flow (Pond 4) Cumulative (Pond 4) % Time Stage HW US HW DS TW US DS Leaving Weir Flow Stage Volume of Full [h min] [feet] [feet] [feet] [c f s ] [c f s ] [c f s ] [c f s ] [feet] [acre -ft ] [acre -ft ] 0 00 4799 66 4799 55 4782 00 40 00 40 00 0 00 0 00 4782 00 0 00 0 00 0 30 4798 77 4798 62 4782 00 10 98 10 45 0 00 0 00 4782 00 0 00 0 00 1 00 4799 06 4798 92 4782 00 10 92 10 33 0 00 0 00 4782 00 0 00 0 00 1 30 4798 97 4798 82 4782 00 17 01 17 91 0 00 0 00 4782 00 0 00 0 00 2 00 4799 02 4798 84 4782 00 26 96 26 11 0 00 0 00 4782 00 0 00 0 00 2 30 4799 00 4798 79 4782 00 41 07 40 72 0 00 0 00 4782 00 0 00 0 00 3 00 4799 01 4798 78 4782 00 60 25 56 70 0 00 0 00 4782 00 0 00 0 00- 3 30 4799 23 4799 01 4782 00 92 04 85 73 0 00 0 00 4782 00 0 00 0 00 4 00 4799 53 4799 33 4782 00 123 61 116 88 0 00 0 00 4782 00 0 00 0 00 4 30 4800 07 4799 89 4782 00 194 26 181 15 0 00 0 00 4782 00 0 00 0 00 5 00 4800 68 4800 53 4782 00 278 84 265 76 0 00 0 00 4782 00 0 00 0 00 5 30 4802 32 4802 22 4782 00 662 15 620 79 0 00 0 00 4782 00 0 00 0 00 6 00 4803 59 4803 50 4782 00 1082 58 1049 55 0 00 0 00 4782 00 0 00 0 00 6 30 4804 58 4804 48 4784 17 1818 79 1624 72 156 73 156 73 4784 17 6 48 1 85% 7 00 4805 22 4805 11 4785 29 2579 52 2162 14 375 21 375 21 4785 29 21 98 6 26% 7 30 4805 69 4805 58 4786 71 3270 50 2662 15 578 02 578 02 4786 71 45 87 13 07% 8 00 4806 04 4805 93 4788 26 3941 33 3149 32 752 65 752 65 4788 25 76 97 21 93% 8 30 4806 36 4806 25 4790 00 4609 08 3643 18 926 08 926 08 4790 00 115 24 32 84% 9 00 4806 62 4806 50 479189 5287 87 4156 91 1076 22 1076 22 479188 159 71 45 51% 9 30 4806 97 4806 85 4793 98 6363 64 4992 85 1296 55 1296 55 4793 98 213 28 60 77% 10 00 4807 35 4807 24 4796 42 7643 30 5948 19 1567 06 1567 06 4796 41 278 04 79 23% 10 30 4807 63 4807 52 4799 14 8795 84 6918 86 1764 23 1764 23 4799 13 350 94 100 00% Amen Aggregate Resource Specific Exhibits Page 44 of 84 Groundwater The construction of the Compacted Clay Liners as specified in the reclamation plan may have the potential to create groundwater mounding up -gradient of the proposed reservoirs Celli Underdrain Design Due to time constraints prior to mining Cell 1, an underdrain has been specified upgradient of Pond 1 Determination of the discharge capacity of the underdrain was made by utilizing Darcy's law, written as (1) Q=K (dh/dl)*A where K= hydraulic conductivity [ft/sec] dh/dl = gradient = change in head over change in distance [dimensionless] A= cross sectional area of the aquifer [ft2] The groundwater gradient was determined by plotting a groundwater contour map of the local area based on data from a regional published USGS study and onsite depth to groundwater data measured at the time of test hole drilling ( see Exhibit G — Groundwater Contour Map) The hydraulic conductivity was defined as 328 ft/day = 0038 ft/sec, which is thought to be a conservative value considering the up -gradient aquifer is outside of the alluvial aquifer boundary and is composed of fine grained silt and sand The area of aquifer that will need to be drained is assumed to be the length of the up -gradient clay liner section times 8ft The 8ft value is the assumed potential for groundwater mounding to the surface \due to the clay liner blockage This is also considered to be a conservative estimate of groundwater mounding Substituting these parameters into equation (1) above yields a Qaquifer value of 0 68 c f s for the 750ft length of underdrain The slotted pipe specification for the underdrain is 8" SDR 17 PVC Pipe with 125" slot size (manufactured by Certainteed) This section of pipe is designed to flow 0 025 c f s per liner foot of pipe The 750 ft section will therefore flow 18 75 cfs The slot size specification is based on the underdrain filter design which was determined as follows Determination of the underdrain filter was made by first taking sieve analysis - from onsite borings TH-1 9'-10', Th-8 8'-9' and TH-11 8'-9' (see Table 6.4.7-4 Soil Sample Sieve Analyses) These borings were completed in in Cells 4 and 6, however should be representative of the soils found in Cell 1 adjacent to the proposed underdrain Amen Aggregate Resource Specific Exhibits Page 45 of 84 Table 6 4.7-4 Soil Sample Sieve Analyses. Bore ID TH-11 Sample Depth 8'- 9' USCS Soil Classification GW/ GP -GM Sieve Number Diameter (mm) Soil Retained (%) Soil Passing (%) 2" 50 800 0 00% 100 00% 1" 25 400 6 80% 93 20% 3/4" 19 050 17 80% 82 20% 1/2" 12 700 33 00% 67 00% 3/8" 9 525 40 00% 60 00% No 4 4 750 53 50% 46 50% No 10 2 000 65 70% 34 30% No 20 0 600 75 50% 24 50% No 40 0 420 83 60% 16 40% No 100 0 150 91 00% 9 00% No 200 0 075 94 80% 5 20% Gravel 53 50 % Sand 37 50 % Fines 5 20 Cu 52 78 Cc 0 99 mm inch D10 0 18 0 007 D15 027 0011 D30 050 D60 D85 1 30 0 051 5 90 0 232 9 50 0 374 20 00 0 787 Bore ID TH-8 Sample Depth 8'- 9' USCS Soil Classification SW/ SP-SM Sieve Number Diameter (mm) Soil Retained (%) Soil Passing (%) 2" 50 800 0 00% 100 00% 1" 25 400 1 00% 99 00% 3/4" 19 050 5 70% 94 30% 1/2" 12 700 10 50% 89 50% 3/8" 9 525 20 50% 79 50% No 4 4 750 33 10% 66 90% Amen Aggregate Resource Specific Exhibits Page 46 of 84 No 10 2 000 44 30% 55 70% No 20 0 600 56 50% 43 50% No 40 0 420 71 30% 28 70% No 100 0 150 83 50% 16 50% No 200 0 075 89 40% 10 60% % Gravel 33 10 % Sand 49 40 % Fines 10 60 Cu 37 33 Cc 0 88 mm inch D10 008 0003 D15 0 14 0 005 D30 0 43 0 017 D50 1 25 0 049 Duo 2 80 0 110 Dm 11 00 0 433 Bore ID TH-1 Sample Depth 9'- 10' USCS Soil Classification SW/ SP Soil Retained (%) -S114 Sieve Number Diameter (mm) Soil Passing (%) 2" 50 800 0 00% 100 00% 1" 25 400 0 00% 100 00% 3/4" 19 050 1 00% 99 00% 1/2" 12 700 5 00% 95 00% 3/8" 9 525 10 00% 90 00% No 4 4 750 23 50% 76 50% No 10 2 000 33 90% 66 10% No 20 0 600 45 70% 54 30% No 40 0 420 64 70% 35 30% No 100 0 150 85 50% 14 50% No 200 0 075 91 00% 9 00% % Gravel 23 50 % Sand 62 00 % Fines 9 00 Cu 14 12 Cc 104 mm Dio 0 09 D15 inch 0 003 0 16 0 006 Dm 0 33 0 013 Dso 0 56 0 022 060 1 20 0 047 Da5 6 30 0 248 Amen Aggregate Resource Specific Exhibits Page 47 of 84 Bore ID _ Sample Depth ASTM D448 Size No 9 Sieve Number Diameter (mm) Soil Passing Upper (%) Soil Passing Lower (%) 3/4" 19 050 100 00% 100 00% 1/2" 12 700 100 00% 100 00% 3/8" 9 525 100 00% 100 00% No 4 4 750 85 00% 100 00% No 8 2 000 10 00% 40 00% No 16 0 600 0 00% 10 00% No 50 0 150 0 00% 5 00% No 100 0075 000% 000% No 200 0 420 0 00% 0 00% mm D15 220 D50 D55 Upper inch 0 087 Lower mm inch 075 0030 3 20 0 126 2 40 0 094 3 17 0125 1 19 0 047 After some iterative testing of other potentially suitable filter materials, ASTM 33, D448 No 9 was selected The chart below (Amen Cell 1 Drain Design) plots the grain size distribution of the upper and lower limits of ASTM 33 D448 no 9 filter material along with the 3 boring samples The chart shows a reasonable portion of overlap between the grain size distribution of the samples and the range of distributions of the filter materials Amen Aggregate Resource Specific Exhibits Page 48 of 84 Amen Cell 1 Drain Filter Design 100% 95% 90% 85% 80% 75% 70% L 65% .9' 60% 55(Y0 50% a) c 45% *40% a) L 35% a) a 30% 25% 20% 15% 10% 5% 0% 10.000 100.000 Ilk i II' _ 1.000 grain diameter (mm) 0.100 -4—ASTM 33 Coarse Limit ASTM 33 Fine Limit ---,r TH-11 8'-9' 0.010 Amen Aggregate Resource Specific Exhibits Page 49 of 84 Compatibility calculations between the filter material and adjacent soils were made based on methods given in Seepage Drainage and Flow Nets, Cedergren 1977, pp 179-181 as follows TH-11 TH-8 TH-1 1 D15 of Coarser Material >= 5 0 75 = 2 78 0 75 = 5 36 0 75 = 4 69 D15 of Finer Material 0 27 0 14 0 16 2 D15 of Coarser Material <= 5 2 20 = 0 11 2 20 = 0 20 2 20 = 0 35 D85 of Finer Material 20 00 11 00 6 30 3 D5o of Coarser Material <= 25 3 20 = 0 54 3 20 = 2 56 3 20 = 5 71 D50 of Finer Material 5 90 1 25 0 56 4 D5o of Drain Material >= 1 2 80 = 1 00 Pipe Slot Size 2 80 Equation number 1 of the grain size compatibility calculations does come in slightly below the desired value of 5 for TH-11, however the average of the 3 samples is close to 4 3, so the filter should be expected to still perform well The layout and construction specifications for the underdrain are given in Exhibit G Sheets 1-3 The underdrain has been placed horizontally up -gradient of the proposed clay liner Vertically, the underdrain has been placed at the approximate elevations of groundwater at the time the boring s were made (April 2018) Groundwater elevations generally occur near the boundary of the overburden and gravel seam, which is as high the underdrain should be placed in order for it to have a good hydraulic connection to the gravel aquifer The plan section of pipe with a minimum slope of 19% will flow 0 7 c f s by gravity which is adequate to flow the Qaquifer value of 0 68 c f s calculated above Additional underdrains adjacent to the remaining mining cells may be also required depending on if groundwater mounding occurs For the purpose of determining if significant mounding will occur adjacent to those cells, the applicant proposes the installation of groundwater observation wells along the upgradient property boundary as shown in Exhibit F — Reclamation Plan - Sheet 1 Wells OW -1 through OW -7 will be installed following completion of the project permitting process Existing wells EW-1, EW-2 and EW-3 will also be utilized to observe groundwater elevations The applicant proposes monthly observations of groundwater elevations (observations) for all wells for a minimum of 5 quarters prior to mining, during mining and for 2 years following reclamation of each mining cell If the reclamation condition water levels are shown to occur at less than 2 feet above Amen Aggregate Resource Specific Exhibits Page 50 of 84 the historically highest elevation, then no mitigation shall be required If the reclamation condition water levels are shown to increase 2ft above the historically highest elevation, then a Technical Revision including specifications and design of an underdrain(s) will be submitted to the DRMS for approval prior to installation Amen Aggregate Resource Specific Exhibits Page 51 of 84 APPENDIX 6.4.7 -Al HEC-SSP REPORT page 1 of 3 Bulletin 17C (Java) Frequency Analysis 05 Aug 2019 12 56 PM ---------------------- -- Input Data -- Analysis Name BT -1A Description Data Set Name BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK DSS File Name E \Data\Gravel Projects\Amen\Floodplam\BTR\BTR dss DSS Pathname /BIG THOMPSON RIVER/LOVELAND, CO /FLOW -ANNUAL PEAK/01jan1900/IR-CENTURY/USGS/ Report File Name E \Data\Gravel Projects\Amen\Floodplam\BTR\Bulletin17Results\BT-1A\BT-1A rpt XML File Name E \Data\Gravel Projects\Amen\Floodplam\BTR\Bulletin 17Results\BT-1A\BT-1A xml Start Date End Date Skew Option Use Station Skew Regional Skew -Infinity Regional Skew MSE -Infinity Plotting Position Type Hirsch-Stedinger Upper Confidence Level 0 05 Lower Confidence Level 0 95 Display ordinate values using 1 digits in fraction part of value -- End of Input Data --- << EMA Representation of Data >> BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK I Value I Year Peak Low High --I Threshold I I I Low High I TYPe 1979 248 0 I 248 0 248 01 1 0E-99 1980 6,970 0 I 6,970 0 6,970 0 I 1 0E-99 1981 349 0 I 349 0 349 0 I 1 0E-99 1982 2,270 0 I 2,270 0 2,270 0 I 1 0E-99 1983 2,240 0 I 2,240 0 2,240 0 I 1 0E-99 1984 985 0 985 0 985 0 1 0E-99 1985 542 0 542 0 542 0 1 0E-99 1986 707 0 707 0 707 0 1 0E-99 1987 422 0 422 0 422 0 1 0E-99 1988 292 0 292 0 292 0 1 0E-99 1989 1,070 0 I 1,070 0 1,070 0 I 1 0E-99 1990 689 0 689 0 689 0 1 0E-99 1991 873 0 873 0 873 0 1 0E-99 1992 274 0 274 0 274 0 1 0E-99 1993 446 0 446 0 446 0 1 0E-99 1994 2,710 0 I 2,710 0 2,710 0 I 1 0E-99 1995 3,780 0 I 3,780 0 3,780 0 I 1 0E-99 1996 368 0 368 0 368 0 1 0E-99 1997 1,790 0 I 1,790 0 1,790 0 I 1 0E-99 1998 349 0 349 0 349 0 1 0E-99 1999 4,960 0 I 4,960 0 4,960 0 I 1 0E-99 2000 339 0 339 0 339 0 1 0E-99 2001 468 0 468 0 468 0 1 0E-99 2002 238 0 238 0 238 0 1 0E-99 2003 679 0 679 0 679 0 1 0E-99 2004 577 0 577 0 577 0 1 0E-99 2005 780 0 780 0 780 0 1 0E-99 2006 357 0 357 0 357 0 1 0E-99 2007 284 0 284 0 284 0 1 0E-99 2008 240 0 240 0 240 0 1 0E-99 2009 400 0 400 0 400 0 1 0E-99 2010 1,800 0 I 1,800 0 1,800 0 I 1 0E-99 2011 627 0 627 0 627 0 1 0E-99 1 0E99 I Syst I 1 0E99 I Syst I 1 0E99 I Syst I 1 0E99 I Syst I 1 0E99 I Syst I 1 0E99 Syst 1 0E99 Syst 1 0E99 Syst 1 0E99 Syst 1 0E99 Syst 1 0E99 I Syst I 1 0E99 Syst 1 0E99 Syst 1 0E99 Syst 1 0E99 Syst 1 0E99 I Syst I 1 0E99 I Syst I 1 0E99 Syst I 1 0E99 I Syst I 1 0E99 Syst I 1 0E99 I Syst I 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 1 0E99 Syst Syst Syst Syst Syst Syst Syst Syst Syst Syst 1 0E99 I Syst I 1 0E99 Syst APPENDIX 6.4 7 -Al HEC-SSP REPORT ' 2012 1,600 0 I 1,600 0 1,600 0 I 1 0E-99 1 0E99 I Syst 2013 19,000 0 I 19,000 0 19,000 0 I 1 0E-99 1 0E99 I Syst 2014 1,500 0 I 1,500 0 1,500 0 I 1 0E-99 1 0E99 I Syst 2015 2,240 0 I 2,240 0 2,240 0 I 1 0E-99 1 0E99 I Syst 2016 881 0 I 881 0 881 0 I 1 0E-99 1 0E99 I Syst 2017 628 0 I 628 0 628 0 I 1 0E-99 1 0E99 I Syst I I - --I- -I Fitted log10 Moments Mean Variance Std Dev Skew EMA at -site data w/o regional info 2 922375 0 199835 0 447029 1 038681 EMA w/ regional info and B17b MSE(G) 2 922375 0 199835 0 447029 1 038681 EMA w/ regional info and specified MSE(G) 2 922375 0 199835 0 447029 1 038681 EMA Estimate of MSE[G at -site] 0 248671 MSE[G at -site systematic] 0 248671 Equivalent Record Length [G at -site] 39 000000 Equivalent Record Length [Syst+Hest-LowOutl] 39 000000 Grubbs -Beck Critical Value 0 000000 --- Final Results — << Plotting Positions >> BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK Events Analyzed I Ordered Events FLOW I Water FLOW H -S Day Mon Year CFS I Rank Year CFS Plot Pos -I -- 19 Aug 1979 248 0 I 1 2013 19,000 0 2 50 30 Apr 1980 6,970 0 I 2 1980 6,970 0 5 00 08 Aug 1981 349 0 I 3 1999 4,960 0 7 50 14 Sep 1982 2,270 0 I 4 1995 3,780 0 10 00 12 Jun 1983 2,240 0 I 5 1994 2,710 0 12 50 16 May 1984 985 0 I 6 1982 2,270 0 15 00 18 Jun 1985 542 0 I 7 2015 2,240 0 17 50 06 Jul 1986 707 0 I 8 1983 2,240 0 20 00 09 Jun 1987 422 0 I 9 2010 1,800 0 22 50 05 Jun 1988 292 0 I 10 1997 1,790 0 25 00 03 Jun 1989 1,070 0 I 11 2012 1,600 0 27 50 29 May 1990 689 0 I 12 2014 1,500 0 30 00 02 Jun 1991 873 0 I 13 1989 1,070 0 32 50 07 Aug 1992 274 0 I 14 1984 985 0 35 00 24 May 1993 446 0 I 15 2016 881 0 37 50 11 Aug 1994 2,710 0 I 16 1991 873 0 40 00 30 May 1995 3,780 0 I 17 2005 780 0 42 50 23 Jun 1996 368 0 I 18 1986 707 0 45 00 10 Jun 1997 1,790 0 I 19 1990 689 0 47 50 11 Jul 1998 349 0 I 20 2003 679 0 50 00 30 Apr 1999 4,960 0 I 21 2017 628 0 52 50 25 Sep 2000 339 0 I 22 2011 627 0 55 00 24 Oct 2000 468 0 I 23 2004 577 0 57 50 10 Jun 2002 238 0 I 24 1985 542 0 60 00 17 Jun 2003 679 0 I 25 2001 468 0 62 50 24 Jul 2004 577 0 I 26 1993 446 0 65 00 26 Jun 2005 780 0 I 27 1987 422 0 67 50 25 Aug 2006 357 0 I 28 2009 400 0 70 00 27 Jul 2007 284 0 I 29 1996 368 0 72 50 05 Jun 2008 240 0 I 30 2006 357 0 75 00 22 May 2009 400 0 I 31 1998 349 0 77 50 12 Jun 2010 1,800 0 I 32 1981 349 0 80 00 12 Jul 2011 627 0 I 33 2000 339 0 82 50 07 Jul 2012 1,600 0 I 34 1988 292 0 85 00 page 2 of 3 APPENDIX 6.4.7 -Al HEC-SSP REPORT 12 Sep 2013 19,000 0 I 35 2007 284 0 87 50 I 31 May 2014 1,500 0 I 36 1992 274 0 90 00 I 19 May 2015 2,240 0 I 37 1979 248 0 92 50 1 12 Jun 2016 881 0 I 38 2008 240 0 95 00 I 01 Jan 2017 628 0 I 39 2002 238 0 97 50 I * Low outlier plotting positions are computed using Median parameters << Frequency Curve >> BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK Computed Variance I Percent I Confidence Limits I Curve Log(EMA) I Chance I 0 05 0 95 I FLOW, CFS I Exceedance I FLOW, CFS I --------- I- I - -------I 58,919 2 0 24356 I 0 200 31,402 8 0 15762 I 0 500 19,2612 010723 I 1 000 11,646 7 0 06867 I 2 000 5,812 9 0 03430 ,1 5 000 3,324 4 0 01923 I 10 000 1,815 3 0 01149 I 20 000 702 0 0 00684 I 50 000 348 5 0 00339 I 80 000 264 1 0 00379 I 90 000 218 8 0 00679 I 95 000 167 7 0 02114 I 99 000 << Multiple Grubbs -Beck Test P -Values >> BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK ------------------- Number Of I P -Values I Low Outliers I I I I I I I I I I I I I 2,628,301 6 564,527 0 184,004 6 63,123 3 17,019 2 6,933 2 3,010 3 978 9 446 9 330 9 296 8 285 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 9 998E-1 9 983E-1 9 935E-1 9 937E-1 9 855E-1 9 676E-1 9 892E-1 9 791E-1 9 434E-1 8 974E-1 8 386E-1 8 503E-1 8 194E-1 7 876E-1 7 368E-1 8 647E-1 8 583E-1 8 815E-1 7 748E-1 *= p -value corresponds to a zero flow value << Systematic Statistics >> BT-1-LOVELAND, CO -FLOW-ANNUAL PEAK I Log Transform I I FLOW, CFS I I Number of Events I I 16,628 3 I 11,073 0 I 7,979 6I 5,622 1 I 3,365 1 I 2,14401 1,240 1 I 509 0 I 277 6 I 201 3 I 15521 9191 page 3 of 3 I Mean 2 922 1 Historic Events 0 I Weiland MC Environments, t engineering PO a0X 160e7 saw [0 60309 ph 303-443.9521 fax 303-113-9536 AMEN AGGREGATE RESOURCE REGULAR 112 CONSTRUCTION MATERIALS APP. WELD COUNTY EXHIBIT G - CELL 1 GROUNDWATER CONTOUR MAP GRONDWATER.DWG L 1 i as nfle n �� ' \ \ 1.%%3/4444;C- ----- / f -- i + I i l_ow. 00I -- \ r — I __ _.-- - - '.- ,3/46.4.3/43/4c SS - - - - - -- ,_ \ / 6+00 - f \ - / / 414.43/43/4....0%3/444.43/4 IA.'S OF LirCAvAt1044 / 4810 fMSMED GROt 40 4810 r. -- - -- - • - * - - _--_-_ --.-.-- - ------_-_. --- ---- - - ---- -- _ -- ---.. _ E -stoma PK sop- - _ r _ _ - 1 180O rAlcR IA4( _ _ o`aeuototN + I -4800 •' : '• ' _ _ •• a - , .... 0.44% ..:y-t�-- _ - - - _. - '' o47% . ._. a .d - s:• .. 0 36% Tit 4790- ;� i j{ i , Af. ��jjyy'''� v �,.� �� •. �4K •J a.� ' , fu�T•',• ♦ rM•. 4. i.., • .— 1 ��l}).[� x fi' ' -# L A I . ', - r ! •'•-! .�: .� C^7y �X '` :7 .� .." .^..�. J. f �- ' , ". w t 1. • .. . . . . �4f �: .i pX C� ♦� • 1� C J C� ., t ', :♦' «..� i� - ; Ff . jj'1; �•� C+ i� , L 4 A.�. ' 'f` 6 : , - Y ! �. .1'T P.. .,: f � �' �r • . :� r .4.( -. `�'�• v,...�. •� * f'' .c r r �: iv' LY }E r .. �� th. .. ��'��. �,}\`�i� •�'� �7�1 • �'' 1� � 7 of 19-4 �.�� r_ i•T l : • .. '�- - f �~ T- , { X t Cj, a i yits . 'i�{ !i . .. �. {m •t• :�T�--r-T-T-T- 1r ` • tff Y �r i� l Art jr t 4f i fb- i'° • • 9 ! 9lttYvtYY�ti>'ai�l . •'" zc x+t � 1��z Y x. x A. .i IC i .. 3 3is 3 `!' •-31tL1`! ' X �!: It K it DATUM ILLY 0+25 1 0+75 1+25 t+175 2+25 2+75 3+25 3+75 4+25 4+75 5+25 5+75 1 4180 4780.000 0+00 O+SO 1+D0 1+ 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 6+00 6+75 - - - R. REVISIONS Weiland. Inc. Environmental & Engineering PO DOS IOW i01saa co a0soe w. ..38,.1 AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO EXHIBIT G - SHEET 1 UNDERDRAIN alid .f'l`•. Y'r •••••• 1.1.1 1"-20' 04) y �EXHIBIT G DRAIN P&P.D1iNG REV COULSON EXCAVATING CO, INC JO.....n MIN PFW OA 10/15/2019 1 OF \ \ \ \ \\ \ \ \ \\ N,. \ \ \ \ \ \ \ \ \ \ \ \ 1 \ \ 1 11 1 1A 1 i. \ \ S ♦ \ \ 14°3/44.64%**c .44%.1%4444%.4% (b 1 \ v m C. 1810 X810 n - Ti.~ _ 4800-• -: - - STA 7.]0 CHO SCREEN PIPE .... _._.. . .. . ... _ .;. .. _ - SCOW PLAIN PIPE -- BOO _ _ _ �. _ . 020% ,�� ...__. ..._ ..._.. ..... ._... _ ._._... .. _._.. ..... _ -- - - - - - a at >: 4790- • .. r..,-.1,.: 4 /90 r 1r ' Ir . lu . • 1. w I n _ ♦♦ . y- /.• H -r ♦ ; j] • ., 1. 4• :.,r r :. r.'r. .r,}:.. ,iL ('}:, L 3 t n1 Y. J 7, • . •rt'�4-/-1,..‘"-4:...;: r 'r...... '_ Ml 1' �= Si n t.. Sr. 1 .. In . . A, N i •�� r r, riri w.M, ,, . • T r -.lit'-M "1,, 1 , .,,. ,1. .' '. 'i. �{ 11..' 464 I..I.�Ir•..,.. � .Ni d• rya.' z � .se'. y y� { — — � i S 1' ...L.:.i �:-I:4 ..:.' T:.._ :...-...:4,..:., •::-. . -4.4 1 i -LI— • . ! r.'- ' [ 41.. » .-.r.r _:r.�, l•� I_. r -.L: a'_ ..'..„.jii . it I�..u.JtA.. �.'.L Tµ� t;,. QdI11/f SLAW J -:l.L..„t..; 6x75 7+25 4780.000 6+50 7+00 7+`75 1 8+25 ? 8 75 i 9+259475 1 10425 10475 ► 11+25 i 11475 12125 4780 7+50 8+00 8+50 9+00 9+150 10+00 10150 11+00 11+50 12+00 12+50 imi s 40 a MI M Fe REVISIONS AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO _ EXHIBIT UNDERDRAIN G - SHEET 2 .•, . . .. ' Y•1 an-li W I Welland. Inc. nvWelland. Environmental & Engineering 466.1611 i -20' IMO EXHIBIT DRAIN P&P.DWG a REV ,Y, LIDS 1809, doll( did CU 902u9 303.43 9ser COULSON EXCAVATING CO, INC LPa.r.. cTw ~' a~ �PFw 101152019 2 of 3 ph STUN SLIT 4780.000 124 50 3+ 50.00 4810 4800 4790 4780 4770 w 4810 4800 4790 4780 4770 Weiland. Inc. Environmental & Engineering .'o SON WOW SOUL01,1 ( U 60308 ph 343 113 9S2I CfLT"'I.. 4780 1 54 005+08 NA DA FLL (0WRBDRDfN7 f'L'J'`j'{':.-�,j,/y�l.o •�r�ilA:•t�•rr:�u(� _.• sl1•.+1.+Lfi; 11-11 61.11 kk' aror d' 51$-17 PERFORATED PvC ;r i.C ,J�:4 a OVERBURDEN A4 /SC - SM 7 B' SUBSURFACE DRAIN OE TAIL SCALE r _ ,• FA TER FABRIC ADJACENT TO OVERBURDEN AREAS &MVO ft TER MA TEIf1At ASTM C -J.1 NO W SAND • CRAWL 6y-cW 51 -SP AMEN AGGREGATE RESOURCE REGULAR 112 PERMIT APPLICATION WELD COUNTY, CO COULSON EXCAVATING CO, INC 2 3. TRENCHES SHALL BE EXCAVATED TO THE DEPTH OF THE GRAVEL LAYER TO ENSURE A G000 HYDROLOGIC CONNECTION BETWEEN THE GRAVEL LAYER AND THE PERIMETER DRAIN NATIVE GRAVEL (PIT RUN MATERIAL) SHALL BE USED TO FILL THE TRENCH FROM BOTTOM CONTACT WITH THE GRAVEL LAYER 10 1 FT FROM THE SPECIFIED BOTTOM ELEVATION OF THE PIPE FILTER MATERIAL SHALL BE AVM C -33/D448 SIZE NO 9 4 PERFORATED PIPE SHALL BE FULLY PERFORATED 8- DIAMETER, SDR-17 PVC, WITH 0125- SLOT WIDTH 5. PLAIN (NON -SLOTTED) PvC PIPE SHALL BE C SDR-17 PvC PIPE 6. FILTER MATERIAL SHALL BE WORKED UNDER THE PIPE HAUNCHES BY HAND 7 THE FILTER MATERIAL SHALL EXTEND A MINIMUM OF 12" ON EVERY SIDE or THE SLOTTED PIPE AT COMPLETION OF CONSTRUCTION. 8. EMBEDMENT MATERIAL FOR THE PLAIN PVC PIPE SHALL BE ASTM C-33/0448 SIZE NO. 9, WITH A 6" LAYER BENEATH THE PIPE AND 1 FT THICK ON ALL OTHER SIDES 9 WHERE THE FILTER MATERIAL EXTENDS INTO THE OVERBURDEN LAYER, THE SURROUNDING SIDES AND TOP OF THE FILTER FILTER MATERIAL SHALL HAVE A LAYER OF FILTER FABRIC (MIRAFI I40N GEOTEXTILE OR EOUIVALENT OVERLAPS OF THE FABRIC SHALL BE AT LEAST 3 FT NAOE WHEN BEGINNING NEW FABRIC ROLL ID NATIVE FILL WILL SERVE AS BACKFILL ABOVE THE FILTER MATERIAL TO GRADE. EXHIBIT G - SHEET 3 UNDERDRAIN EXHIBIT G DRAIN P&P.DWG 1W15/2019 6.4 8 Exhibit H — Wildlife Information A Wildlife Habitat Assessment Report (WHAR) was prepared for the site by Wildlife Specialties, LLC in May of 2018 and is included as Attachment A The conclusions and recommendations of the report indicate that mining of the AAR as planned is not expected to significantly impact wildlife beyond the extent of local state or federal wildlife regulations The WHAR will be submitted to the Colorado Division of Wildlife for approval and clearance prior to commencement of mining activities Amen Aggregate Resource Specific Exhibits Page 56 of 84 40' 23TN 4C` 22 38' N 6.4.9 EXHIBIT I - SOILS INFORMATION Map Scale: 1:4,750 if pnnted on B landscape (17 x 11") sheet N Meters 0 50 100 10 300 A 0 10 4()C St Map projection: Web Mercator Comer coorr]ir'ates: WGS84 Natural Resources Conservation Service r eel 13L Soil Map—Larimer County Area, Colorado, and Weld County, Colorado, Southern Part (AMEN PIT) Web Soil Survey National Cooperative Soil Survey 104 ss 33' w 10/16/2018 Page 25 40° 27 38" N 6.4.9 EXHIBIT I - SOILS INFORMATION Soil Map Larimer County Area, Colorado; and Weld County. Colorado. Southern Part MAP LEGEND Area of Interest (AOl) Area of Interest (AOI) Soils Soil Map Unit Polygons •r Soil Map Unit Lines Soil Map Unit Points a Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot i • O eRt 0 C A O • tisDA Natural Resources saw Conservation Service • Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Transportation Rails eakosi Background Interstate Highways US Routes Major Roads Local Roads Aerial Photography Web Soil Survey National Cooperative Soil Survey MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Larimer County Area, Colorado Survey Area Data: Version 13. Sep 10, 2018 Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 17, Sep 10, 2018 Your area of interest (AOI) includes more than one soil survey area. These survey areas may have been mapped at different scales, with a different land use in mind. at different times, or at different levels of detail. This may result in map unit symbols, soil properties, and interpretations that do not completely agree across soil survey area boundaries. Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 20, 2015 Oct 21, 2017 10/16/2018 Page 26 6 4 9 EXHIBIT I - SOILS INFORMATION Soil Map —Lamer County Area, Colorado, and Weld County, Colorado, Southern Part MAP LEGEND MAP INFORMATION The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps As a result, some minor shifting of map unit boundaries may be evident USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 10/16/2018 Page 27 6.4.9 EXHIBIT I - SOILS INFORMATION Soil Map Larimer County Area. Colorado; and Weld County. Colorado, Southern Part Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 33 Fluvaquents, nearly level 0.0 0.0% Subtotals for Soil Survey Area 0.0 0.0% Totals for Area of Interest 156.7 -1 100.0% Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 3 Aquolls and Aquents. gravelly substratum 140.3 89.6% 10 Ellicott complex. slopes, -Ellicott sandy -skeletal 0 to 3 percent rarely flooded 6.0 3.8% 15 Colby slopes loam, 1 to 3 percent 0.2 0.1% 31 Kim loam. 0 to 1 percent slopes 1.1 0.7% 85 Water 9.0 5.8% Subtotals for Soil Survey Area 156.6 100.0% Totals for Area of Interest 156.7 100.0% t \ Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 10/16/2018 Page 28 6.4.10. Exhibit J — Vegetation Vegetation information is based on studies conducted by Birch Ecology, LLC in July 2018 and is included in the following attachments ATTACHMENT B — Vegetation Assessment, Amen Aggregate Resource Weld County, Colorado July, 2018 ATTACHMENT C — Wetland Delineation Report, Amen Aggregate Resource Weld County, Colorado July, 2018 ATTACHMENT D — Habitat Assessment, Amen Aggregate Resource Weld County, Colorado July, 2018 The applicant is in the process of acquiring a wetland Jurisdictional /Non - Jurisdictional Determination (JD) from the Army Core of Engineers Should any of the wetlands be jurisdictional, then the mine plan will be amended to avoid impacts, or a wetland mitigation plan/ Section 404 permit will be acquired Amen Aggregate Resource Specific Exhibits Page 61 of 84 6 4 11 Exhibit K — Climate Information Monthly Temperature Data [F] NCWCD Loveland Climate Station Water Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Average 1990 50 00 39 82 25 10 33 73 31 04 36 69 47 62 54 29 68 63 69 00 68 94 64 69 49 13 1991 49 82 41 16 22 05 23 76 38 08 41 54 46 61 57 87 66 30 70 41 69 35 60 78 48 98 1992 49 34 34 18 31 96 30 95 38 60 41 36 52 74 58 40 64 46 68 29 66 39 63 00 49 97 1993 51 89 32 05 24 13 24 15 27 60 41 61 46 54 57 76 63 58 69 29 66 97 57 42 46 92 1994 47 32 32 72 32 03 31 85 28 69 42 70 47 28 60 43 69 95 70 55 70 62 63 76 49 83 1995 49 63 35 89 33 30 31 23 35 26 40 52 44 25 50 59 62 75 70 39 73 61 60 59 49 00 1996 49 43 41 18 32 89 25 87 33 15 36 67 48 63 58 02 67 43 71 44 69 38 60 04 49 51 1997 50 76 36 38 33 23 25 49 31 47 41 90 41 99 57 33 66 89 71 65 69 14 63 73 49 16 1998 50 08 35 25 30 95 33 46 35 09 37 60 46 50 59 15 62 23 72 78 71 53 66 85 50 12 1999 49 89 42 77 NC 33 76 39 63 43 78 NC 55 24 64 63 73 18 70 74 58 59 NC - 2000 50 46 44 64 35 80 33 08 39 31 41 41 51 30 60 82 66 61 75 05 73 19 63 19 52 91 2001 50 01 NC NC NC NC NC NC NC NC NC NC NC NC 2004 NC NC NC NC 29 99 45 01 47 45 59 35 62 02 69 19 66 71 60 88 NC 2005 49 87 36 83 30 55 30 94 34 74 39 23 46 44 55 33 65 30 73 77 69 33 62 41 49 56 2006 50 54 40 78 27 89 35 46 29 32 37 01 50 85 59 26 70 71 74 04 71 14 57 20 50 35 2007 48 42 38 25 26 85 19 51 28 49 44 17 45 74 57 29 66 45 75 10 72 97 62 96 48 85 2008 51 46 39 18 22 68 25 07 32 25 38 16 44 20 54 81 64 60 72 23 67 97 58 94 47 63 2009 48 48 41 09 24 08 30 87 35 58 39 54 44 56 57 21 62 62 68 55 66 75 60 67 48 33 2010 41 11 38 77 21 51 26 54 26 37 38 59 46 67 52 20 66 34 71 61 70 72 62 69 46 93 2011 52 16 36 51 32 57 26 42 25 78 41 21 46 45 51 18 65 65 73 70 73 45 ( 61 45 48 88 2012 50 22 37 26 24 30 33 02 27 75 46 14 52 28 57 58 71 28 75 21 70 83 63 30 50 76 2013 47 07 38 46 28 96 26 88 27 89 35 64 40 52 55 90 67 99 71 66 71 13 64 12 48 02 2014 46 59 38 26 26 21 28 07 25 75 38 70 47 69 56 17 65 28 71 35 68 73 61 80 47 88 2015 52 66 33 57 30 27 30 97 33 11 41 86 48 14 51 89 68 05 71 09 70 81 65 96 49 87 2016 54 49 37 39 27 33 28 01 35 64 40 67 47 92 52 91 69 97 73 16 69 03 62 97 49 96 2017 54 89 43 60 24 38 27 30 39 40 45 72 47 89 54 60 67 55 73 34 68 29 62 32 50 77 2018 47 24 42 14 30 63 30 17 27 09 41 34 46 09 58 98 69 93 72 33 69 70 64 91 50 05 2019 47 41 35 62 NC NC NC NC NC NC NC NC NC NC NC Min 41 11 32 05 21 51 19 51 25 75 35 64 40 52 50 59 62 02 68 29 66 39 57 20 46 92 Max 54 89 44 64 35 80 35 46 39 63 46 14 52 74 60 82 71 28 75 21 73 61 66 85 52 91 Mean 49 68 38 22 28 32 29 06 32 20 40 72 47 05 56 33 66 43 71 86 69 90 62 05 49 31 Amen Aggregate Resource Specific Exhibits Page 62 of 84 Monthly Precipitation [in ] NCWCD Loveland Climate Station Water Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Average 1990 NC NC NC 0 67 0 67 4 56 0 97 2 89 0 29 1 67 1 43 2 37 NC 1991 049 073 058 045 003 025 083 204 206 305 147 112 1310 1992 0 65 1 71 0 03 0 48 0 02 3 05 1 17 1 19 1 88 1 48 2 86 0 00 14 52 1993 017 111 030 038 084 143 214 112 255 104 095 270 1471 1994 2 01 1 23 0 18 0 41 0 80 0 56 2 53 1 28 2 91 1 07 1 77 0 72 15 47 1995 081 069 044 021 094 069 316 680 344 082 018 184 2002 1996 016 063 011 110 028 151 085 276 156 244 070 274 1486 1997 048 072 009 091 077 067 326 257 ` 261 1 98 311 224 1941 1998 1 25 0 46 0 28 0 12 0 28 2 05 1 99 2 05 1 32 1 09 0 54 0 90 12 34 1999 3 43 0 89 NC 0 45 0 06 0 67 NC 1 83 2 26 1 70 1 85 1 57 NC 2000 1 05 0 72 0 16 0 09 0 28 1 11 0 71 1 50 1 22 0 89 0 60 1 85 10 17 2001 0 57 NC NC NC NC NC NC NC NC NC NC NC NC 2002 NC NC NC NC NC NC NC NC NC 0 29 0 47 1 95 NC 2003 094 061 001 001 097 392 254 263 299 076 158 031 1726 2004 0 09 0 55 0 37 0 47 0 88 0 47 1 96 2 04 2 48 2 66 2 06 2 04 16 06 2005 1 34 1 78 0 21 1 07 0 51 0 78 3 20 2 26 2 61 0 53 0 92 0 37 15 58 2006 3 19 0 11 0 29 0 11 0 59 1 61 0 14 0 71 0 10 1 59 1 72 0 37 10 54 2007 2 22 0 62 1 01 1 03 0 39 1 67 1 96 1 55 0 25 1 15 1 87 1 58 15 28 2008 1 43 0 39 1 57 0 04 0 36 1 14 0 80 1 89 1 32 0 52 2 58 1 43 13 47 2009 0 63 0 07 0 68 0 58 0 26 1 31 4 92 2 02 2 32 2 14 1 34 1 16 17 42 2010 2 28 0 71 1 34 0 23 0 76 2 11 3 30 1 97 2 44 2 50 0 73 0 06 18 42 2011 0 54 0 76 0 33 0 46 0 84 0 29 2 30 4 63 1 67 2 31 0 16 1 64 15 91 2012 1 45 0 88 1 41 0 18 1 45 0 01 0 50 1 62 0 11 2 12 0 08 1 19 11 01 2013 0 81 0 49 0 33 0 08 1 04 1 26 3 22 3 24 1 44 1 32 1 11 6 63 20 96 2014 1 24 0 46 0 50 1 81 0 40 1 22 0 58 5 32 0 65 2 91 2 68 1 46 19 23 2015 0 92 1 04 0 81 0 30 1 57 0 37 2 74 6 44 2 66 1 19 1 02 0 05 19 10 2016 2 24 1 80 1 36 0 52 1 26 2 85 2 30 2 23 0 23 1 08 0 80 0 25 16 92 2017 0 46 0 24 0 72 0 91 0 46 0 67 2 42 4 11 0 39 0 44 1 91 1 86 14 59 2018 1 50 0 57 0 38 0 52 0 93 0 85 0 93 3 70 0 69 2 73 0 64 0 13 13 55 2019 1 23 0 51 NC NC NC NC NC NC NC NC NC NC NC Min 009 007 001 001 002 001 014 071 01 029 008 0 1017 Max 343 18 157 181 157 456 492 68 344 305 311 663 2096 Mean 1 2 0 76 0 54 0 5 0 65 1 37 1 98 2 68 1 65 1 55 1 33 1 45 15 6 Amen Aggregate Resource Specific Exhibits Page 63 of 84 6 4 12 Exhibit L- Reclamation Costs PHASEI DIRECT COSTS Item # Mining Cell Task Description Area Volume Volume Hours Unit Cost Extension acres/ /yd'/ acre 81 Ihrs 1$l 1 Cell 1 Dewatennq I 76 I I $300 00 $22 800 00 2 Cell 1 Spillway Revetment See Revetment Cost Worksheet $9 394 57 3 Cell 1 Rip Weathered Claystone Moisture Condition and Place Compacted Clay Liner Material 33 700 $1 50 $50 550 00 4 Cell 1 Backfill Slope Adjacent to Clay Liner 33 700 $1 00 $33 700 00 5 Cell 1 Clay Liner Geotechnical Testing QA/QC 33 700 $0 10 $3 370 00 6 Cell 1 Underdrain 1 500 ft 8 SDR 17 $25 00 $37 500 00 7 Cell 1 Topsoil Replacement 8 Depth 13 12 14 110 $0 58 $8 183 73 8 Cell 1 Revegetate Disturbed Area (includes Plant Area) 13 12 $550 00 $7 216 00 9 Cell 6 Topsoil Replacement 8 Depth (includes Conveyor Disturbance Area) 14 29 15 368 $0 58 $8 913 53 10 Cell 6 Revegetate Disturbed Area (includes Conveyor Disturbance Area) 14 29 $550 00 $7 859 50 11 Cell 1 Remove 20 Conveyor Piers $5 000 00 $5 000 00 12 Cell 1 Mobilization/Demobilization $2 000 00 $1 000 00 Total D rect Costs $195 487 32 INDIRECT COSTS OVERHEAD AND PROFIT Liability Insurance (1 55% of Direct Costs) Performance Bond (1 05% of Direct Costs) Job Superintendent Costs Profit @10% of Direct Costs Total Overhead and Profit Contract Amount (Direct Costs plus Overhead and Profit) Engineenng work and/or contract/bid preparation @4 25% of contract Reclamation management and/or administration @5 00% of contract 5 5 $50 00 $3 030 05 $2 052 62 $275 00 $19 548 73 $24 906 40 $220 393 73 $9 366 73 $11 019 69 $45 292 82 6 4 12 Exhibit L- Reclamation Costs PHASEII DIRECT COSTS Item Mining Cell Task Description TOTAL BOND AMOUNT $265,686 55 Area Volume Volume Hours Unit Cost Extension acres) (yd'J acre ftl lhrs $ $ 1 Cell 2 Dewatenng I I 110 i I $300 00 $33 000 00 Cell 2 Ponds 2 & 3 Spillway Revetments See Revetment Cost Worksheet $25 111 25 Cell 2 Pond 3 Pipeline Embankment Slope Revetment See Revetment Cost Worksheet $79 128 77 Cell 2 Pond 2 Rip Weathered Claystone Moisture Condition and Place Compacted Clay Liner Material 28 872 00 $1 50 $43 308 00 Cell 2 Pond 2 Clay Liner Geotechnical Testing QA/QC 28 872 00 $0 25 $7 218 00 Cell 2 Pond 3 Rip Weathered Claystone Moisture Condition and Place Compacted Clay Liner Material 27 450 00 $1 50 $41 175 00 Cell 2 Pond 3 Clay Liner Geotechnical Testing QA/QC 27 450 00 $0 25 $6 862 50 Cell 2 Topsoil Replacement @ 8 Depth 6 66 7 162 $0 58 $4 154 24 Cell 2 Revegetate Disturbed Area 6 66 $550 00 $3 663 00 Cell 2 Mobilization/Demobilization $2 000 00 $2 000 00 Total Direct Costs INDIRECT COSTS OVERHEAD AND PROFIT $245 620 76 Liability Insurance (1 55% of Direct Costs) Performance Bond (1 05% of Direct Costs) Job Superintendent Costs Profit @10% of Direct Costs Total Overhead and Profit Contract Amount (Direct Costs plus Overhead and Profit) Engineering work and/or contract/bid preparation @4 25% of contract Reclamation management and/or administration @5 00% of contract 165 $5000 $3 807 12 $2 579 02 $825 00 $24 562 08 $31 773 22 $277 393 98 $11 789 24 $13 869 70 $57 432 16 TOTAL BOND AMOUNT $334 826 14 6 4 12 Exhibit L- Reclamation Costs PHASE Ill DIRECT COSTS Item Mining Cell Task Description Area Volume Volume Hours Unit Cost Extension acres) Ird'J acre -ft l Ihrs $ Cell 3 4 & 6 Dewatenng $300 00 $78 000 00 Cells Dewatenng I I 120 I I $300 00 $36 000 00 Cells 3 4 & 6 Pond 4 Spillway Revetments See Revetment Cost Worksheet $51 565 49 Cell 5 Pond 5 Spillway Revetments See Revetment Cost Worksheet $22 443 33 Cell 3 Pond 4 Pipeline Embankment Slope Revetment See Revetment Cost Worksheet $51 565 49 Cells 3 4 & 6 Pond 4 Rip Weathered Claystone Moisture Condition and Place Compacted Clay Liner Material 96 994 $1 50 $145 491 00 Cells 3 4 & 6 Pond 4 Clay Liner Geotechnical Testing QA/QC 96 994 $0 25 $24 248 50 Cell 5 Pond 5 Rip Weathered Claystone Moisture Condition and Place Compacted Clay Liner Material 30 476 $1 50 $45 714 00 Cell 5 Pond 5 Clay Liner Geotechnical Testing QA/QC 30 476 $0 25 $7 619 00 Cells 3 4 & 6 Topsoil Replacement @ 8 Depth 15 40 16 562 $0 58 $9 605 90 Cells 3 4 & 6 Revegetate Disturbed Area 15 40 $550 00 $8 470 00 Cell 5 Topsoil Replacement @ 8 Depth 9 95 10 701 Cell 5 Revegetate Disturbed Area 9 95 $550 00 $5 472 50 Cells 4 & 5 Remove 14 Conveyor Piers $3 000 00 $3 000 00 Cell 3, 4 & 6 Mobilization/Demobilization $2 000 00 $2 000 00 Total Direct Costs INDIRECT COSTS OVERHEAD AND PROFIT $489 195 21 Liability Insurance (1 55% of Direct Costs) Performance Bond (1 05% of Direct Costs) Job Superintendent Costs Profit @10% of Direct Costs Total Overhead and Profit Contract Amount (Direct Costs plus Overhead and Profit) Engineering work and/or contract/bid preparation @4 25% of contract Reclamation management and/or administration @5 00% of contract 16 5 $50 00 $7 582 53 $5 136 55 $825 00 $48 919 52 $62 463 60 $551 658 81 $23 445 50 $27 582 94 $113 492 04 TOTAL BOND AMOUNT $665,150 84 6 4 12 Exhibit L Spillway Slope Revetment Cost Worksheet Installation 6" Type VL Type II Bedding Rock Density 2 26 tons/yd3 Bedding Density 1 72 tons/yd3 $20 00 ton $15 00 ton UNIT COSTS Materials 6" Type VL Type II Bedding Material & Installation Soil Cement $25 00 ton $17 00 ton $25 00 yd3 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 1 [ft`] [yd`] [ft] [ft'] [yd'] [tons] 1$] Type VL Rip Rap Type II Bedding for Type VL Soil Cement 1219 2 135 5 1 0 1219 2 1219 2 1251 2 135 5 10 45 2 102 0 $4,592 20 1219 2 45 2 77 7 $2,485 30 139 0 2 0 2502 4 92 7 $2,317 07 $9,394 57 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 2 & 3 INLET Iftz] [yd`] [ft] [ft'] [yd'] [tons] I$] Type VL Rip Rap Type II Bedding for Type VL Soil Cement ' 1377 9 153 1 1 Oµ44 1377 9 51 0 - 115 3 $5,19015 153 1 1 0 1377 9 51 0� __ _ _ -_�� 87 8 $2,808 91 1398 8 155 4 .__ 2 0 270.6 103 6 $2,590 37 $10,589 42 6 4 12 Exhibit L Spillway Slope Revetment Cost Worksheet AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 2 & 3 INTERCONNECT [ft`] [yd`] [ft] [ft'l [yd'l [tons] [$l Type VL Rip Rap 0 0 W Type II Bedding for Type VL 0 0~ Soil Cement r- 0 0 1 0 0 0__w� 0 0 -6-6 O --$O-66 _. _. 2559 3 284 4 1000 00 00 $000 2 0 5118 6 189 6.W LL__ $4,739 46 $4,739 46 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 2 & 3 OUTLET , Type VL Rip Rap Type II Bedding for Type VL Sod Cement - , [ft `] [yd`] [ft] [ft3] [yd'] [tons] [$1 1395 6 155 1 1 0 1395 6 51 7 116 8 v.. $5,256 6T 1395 6 4W 155 1 1 0 1395 6 51 7 —86-9 J $2,844 88 _.__L-907 7 `___ -- 100 9 �__ 2 0 Yf 1815 3 67 2 yy $1,680 86 $9,782 36 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 4 INLET Type VL Rip Rap 1, ' ` Type II Bedding for Type VL Soil Cement [ft`] [yd`] [ft] [ft'l [yd°l [tons] [$] 2819 6 313 3 -- 10 2819 6 313 3 1 0 4-26J-8- 473 8 2819 6LL yy 104 4 _� 1044 2819 6 20 85277 3158 236 0 $10,620 48 179 6 $5,747 80 „-z $7,896 02 $24,264 30 6 4 12 Exhibit L Spillway Slope Revetment Cost Worksheet AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 4 OUTLET Type VL Rip Rap Type II Bedding for Type VL Soil Cement [ft`] [yd`] [ft] [ft'] [yd3] [tons] [$] 3337 0 370 8 1 0 333-7-0- 123 6 279-3 $12,569 44 4337-6 370-8- 1 0 3337 0 - 123 6 212 6 $6,-86-2-5-8- 1730 2 192 2 2 0 J46-0-4 128 2 $3,204 06 $22,576 08 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 5 INLET [ft`] [yd`] [ft] [ft3] [yd3] [tons] [$] Type VL Rip Rap 1364 2 151 6 1 0 1-364-2- 50 5 114 2 $5,138 43 Type II Bedding for Type VL 1364 2 151 6 1 0 - -136-4-2 �50 5 --86---9- $--2-,-7-60-9-2- 1 Soil Cement 141-1-0 1g6--8 2 0 2821 9 104 5 -$2,612 89 _ __ $10,532 25 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 5 OUTLET [ft`] [yd`] [ft] [ft3] [yd'] [tons] [$] Type VL Rip Rap Type II Bedding for Type VL Soil Cement 1406 2 156 2 1 1406 2 156 2 1 0 2023 7 224 9 1406 2 52 1 1406 2 52 1 20 40474 1499 117 7 $5,296 84 8-9-6- $2,866 65 $3,747 60 $11,911 09 AREA AREA THICKNESS VOLUME VOLUME MASS COST 6 4 12 Exhibit L Spillway Slope Revetment Cost Worksheet POND 3 PIPELINE EMBANKMENT SLOPE Soil Cement [fie] [yd2] [ft] [ft3] [yd3] [tons] [$] 42729 4 4747 7 2 0 ww 85458 83165 2 $79,128 77 $79,128 77 AREA AREA THICKNESS VOLUME VOLUME MASS COST POND 4 PIPELINE EMBANKMENT SLOPE Soil Cement [ft2] [yd2] [ft] [ft3] [yd3] [tons] [$] u27845 3 3,093 92 _ 2 00 55,690 52 2,062 62 $51,565 49 $51,565 49 6.4 13 Exhibit M — Other Permits and Licenses The following permits shall be acquired prior to any site disturbance NPDES Stormwater Discharge Permit Air Pollution Control Division Construction Permit State Engineers Office Well Permit / SWSP Weld County Use by Special Review Permit Weld County Flood Hazard Development Permit USFWS Clearance Letter USACOE section 404 Clearance Letter Amen Aggregate Resource Specific Exhibits Page 70 of 84 6.4.14 Exhibit N — Source of Legal Right to Enter LAND OWNER'S ACKNOWLDEGEMENT OF OPERATOR'S LEGAL RIGHT TO ENTER AND MINE THIS LAND OWNER'S ACKNOWLDEGEMENT OF OPERATOR'S LEGAL RIGHT TO ENTER AND MINE (this "Acknowledgement") dated and made effective this 7 day of `X1u41 20 t is made by Croissant Family Farm, LLC, a Colorado limited liability coin any, with an addres's of 49316 County Road 83, Briggsdale, CO 80611, herein called "Land Owner" Land Owner does hereby acknowledge that Coulson Excavating Company, Inc, a Colorado corporation, with an address of 3609 North County Road 13, Loveland, CO 80538, herein called "Operator," has the right to enter upon to mine sand and gravel on Land Owner's lands located in unincorporated Weld County described as follows A parcel of land located in the South Half of the SE 1/4 of Section 19, Township 5 North, Range 67 West of the 6th P M , Weld County, Colorado being more particularly described as follows Considering the South line of the SE 1/4 of said Section 19 as bearing West and with all bearings contained herein relative thereto Beginning at the SE corner of said Section 19, thence along the South line of said SE 1/4, N 90°00'00" West 2619 76 feet, thence N 00°23'13" W 1315 73 feet, thence S 89°58'22" E 2526 03 feet, thence S 49°23'01" E 130 98 feet, thence S 00°08'56" E 313 51feet, thence S 89°51'04"W 158 98 feet, thence S 00°08'56" E 137 00feet, thence S 19°51'04"W 95 00 feet, thence S 89°08'56" E 77 00feet, thence S 89°51'04" E 114 48 feet, thence S 00°08'56" E 633 12 feet to the Point of Beginning Subject to existing County Road rights of way along the South and East lines of said parcel and any other easements and rights of way of record [signature page follows] {00651712 DOCX / 1 } 1 Amen Aggregate Resource Specific Exhibits Page 70 of 84 6.4.14 Exhibit N — Source of Legal Right to Enter IN WITNESS WHEREOF, the Land Owner has executed this Acknowledgement on the date set forth above CROISSANT FAMILY FARM, LLC Narr was D. erD ‘ssaafti— Its Acknowledgement STATE OF COLORADO COUNTY OF LARIMER ) ) ss The foregoing was acknowledged before me this 9 day of.,r, , 20 19 , by.30.1rr,e, rr ., et as Oar- of Croissant Famd arm, LLC Witness my hand and official seal My Commission expires 9/41 {00651712 DOCX 11 } 2 ublic CAITLYN KAUFFMAN NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20184035097 MY COMMISSION EXPIRES SEPTEMBER 4, 2022 Amen Aggregate Resource Specific Exhibits Page 71 of 84 6 4.15. Exhibit O — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined The owners of record of the land and surface minerals are as follows The land owned by Coulson Excavating Company, Inc as shown on Exhibit C-1 Pre -Mining Plan Map includes a portion of Cell 2 Cell, 3, Cell 4, Cell 5 and Cell 6 The deed of ownership is included on the following page The land owned by Croissant Family Farm, LLC as shown on Exhibit C-1 Pre - Mining Plan Map includes a portion of Cell 2 and Cell 1 The deed of ownership is included on the following page Coulson Excavating Company, Iric has been granted a legal right to enter and Mine by Croissant Family Farm, LLC as shown on 6.1.14 Exhibit N Source of Legal Right to Enter above Amen Aggregate Resource Specific Exhibits Page 73 of 84 6.4.15. Exhibit 0 — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined AR2090322 DEED OF DISTRIBUTION BY PERSONAL REPRESENTATIVE State Documentary Fee �,1 Dote K..34 1.9R1 THIS DEED made by Katherine Nell Dewalt as Personal Representative of the Estate of Raymond H. Amen, Deceased, Grantor, whose address is 26493 Weld County Road 15, Loveland, Colorado 80537 to Coulson Excavating Company, Inc. whose address is 3609 North County Road 13, Loveland, Colorado 80538. WHEREAS, the Grantor is the qualified personal representative of said estate, Probate No. 86PR113, Weld County, Colorado by and through order and letters issued April 28, 1986, and THEREFORE, for the consideration of Ten Dollars and other valuable considerations, receipt of which is hereby acknowledbed, therefore, Grantor sells and conveys to Grantee the following real property in Weld County, Colorado, to -wit A parcel of land located in the SW]/4 of Section 19, Township 5 North, Range 67 West of the 6th P.M , Weld County, Colorado being more particularly described as follows Considering the South line of the SW1/4 of said Section 19 as bearing West and with all bearings contained herein relative thereto. Beginning at the SW Corner of said Section 19, thence along the West line of said SW1/4, North 00°30'58" East 2583.88 feet to a point that bears South 00°30'58" West 50.00 feet from the Northwest Corner of said Southwest Quarter, thence 50.00 feet from and parallel with the North line of said SW1/4 South 89°56'45" East 350.00 feet, thence South 44°25'37" East 534.03 feet to an existing fence line, thence along said existing fence line the following eight (8) courses and distances, South 27°23'37" East 372.46 feet; South 74°58'52" East 695.11 feet, North 77°12'43" East 250.36 feet, North 02°39'25" West 40.10 feet, North 88°42'38' East 326.85 feet, South 73°35'50" East 141.23 feet, South 58°47'14" Eaat 211.30 feet, North 88°47'14" East 76.07 feet to the East line of the SW/4 of said Section 19, thence along said East line South 00°23'13" East 1646.35 feet to the SE Corner of said SW1/4, thence along the South line of said SW;/4, West 2562.26 feet to the point of beginning. Said parcel contains 116.09+/- acres and is subject to existing County Road rights of way along the South and West lines of said parcel and any other ease- ments and rights of way of record TOGETHER WITH all oil, gas, hydrocarbons and other minerals in, on or under the above described property to the full extent presently owned by grantor, SUBJECT TO, HOWEVER, taxes, agreements, reservations, restrictions, covenants and easements of record, and existing easements, and rights of way, if any, AND EXCEPTING AND RESERVING THEREFROM, royalty interests or delay rentals or other profits from oil, gas or hydrocarbon production from the above described property, to the extent accrued tothedate of this deed. AND CONVEYING TO GRNTEE 100 units ox Bigg Thompson water allocated by ort ern o orado water with al appurtpeDancesct Executed this 27th day of February, 1987. 1Wc%U , A41 Katherine Nell Dewal , as 4ItIi Personal Representative of "j the Estate of Raymond H. Ekntb,, Amen, Deceased. STATE OF COLORADO) )ss COUNTY OF LARIMER) The foregoing instrument was acknowledged before me th$5�27th'' ' day of February, 1987 by Katherine Nell Dewalt, as Person`3 = - Representative of the Essatke of Raymond men, Deceased. ' 81? 7-o rep My commission expires iQp�n rA, B 1148 REC 02090322 03/03/87 12.10 $3 00 1/001 F 0382 MARY ANN FEUERSTEIN CLERK & RECORDER WELD CO, CO Amen Aggregate Resource Spccrfic Exhibits Page 73 of 84 6.4.15. Exhibit O — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined 4170162 Pages 1 of 3 CCarl0y4Koppe0s,0Cla k 7 anld Recorder Weld CDounty, e $CO 00 ®Ili FAN A 1I :r# L'a ,yi.F &PAVANIii, k ®I III PERSONAL REPRESENTATIVE'S DEED GRANTORS Larry L Croissant and James D Croissant, as Co -Personal Representatives of the Estate of Viola Christina Croissant, also known as Viola C Croissant, deceased. GRANTEE- Croissant Family Farm, LLC, 49316 County Road 83, Bnggsdale, CO 80611 The decedent died on December 17, 2014 On February 20, 2015, Grantors were appointed Personal Representative of the decedent's estate by the District Court of Weld County, Colorado in Case No 2015 PR 30074 and are now qualified and acting in that capacity By the powers conferred on Grantors by the Colorado Probate Code, and for $0 00 and other good and valuable consideration, the receipt and sufficiency of which Grantors acknowledge, Grantors quitclaim to Grantee all right, title, and interest of the Estate of Viola Christina Croissant, also known as Viola C Croissant, in the following real property located m Sections 19 and 30, Township 5 North, Range 67 West of the Sixth P M , County of Weld, State of Colorado Legal Description SEE ATTACHED EXHIBIT A Address N/A Parcel Nos 095719000053, 095730000020 Assessor's Schedule Nos R0030392, R1634486 with all improvements and appurtenances, subject to. general real estate taxes for the year of transfer and subsequent years, leases, easements, nghts-of-way, protective covenants, liens, and other encumbrances, existing oil, gas, and other mineral rights, interests, leases, and reservations, United States and other government patents; zoning and other governmental rules, codes, ordinances, and regulations, plats, covenants, bylaws, rules, and regulations of any applicable owners association, and all other conditions, restrictions, and encumbrances of record, including those contained in the Recorded Exemption No 0957-19-4 RE -1347 recorded on October 4, 1999 at Reception Number 2265304 and the Quitclaim Deed recorded on January 16, 2001 at Reception No 2819481, all in the records of the Clerk and Recorder's Office of Weld County, Colorado GRANTORS aL Croissant, as Co -Personal Representative of the Estate of 1' Viola Christina Croissant, also known as Viola C Croissant, deceased Peterson, Rosenberc +- .,. 2038 Vermont Dr, S, . 23 Fort Collins, CO C' ' Amen Aggregate Resource Specific Exhibits Page 74 of 84 6.4.15. Exhibit O — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined 4170162 Pages 2 of 3 01/04/2016 02 27 PM R Fee $21 00 D Fee $0 00 Carly Koppes, Clerk and Recorder, Weld County, CO fill vital = l��. Il h#Iti'L �i�1 ��41riaaliyut �tiY4rh 1I II I STATE OF COLORADO COUNTY OF ok.r This instrument was acknowledged before me on is ^ a 3 -/ (date) by the Grantor, Larry L Croissant, as Co -Personal Representative of the Estate of Viola Christina Croissant, also known as Viola C Croissant, deceased. EVA HYBIAK NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20144028307 MY COMMISSION EXPIRES 07/21/2018 Notary Public es D Croissant, as Co -Personal Representative of the Estate of Viola Christina Croissant, also known as Viola C. Croissant, deceased STATE OF COLORADO COUNTY OF f.— eihe• 1 This instrument was acknowledged before me on Jo., 3 /rj (date) by the Grantor, James D Croissant, as Co -Personal Representative of the Estate of Viola Christina Croissant, also known as Viola C Croissant, deceased EVA HYBIAK NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20144028307 MY COMMISSION EXPIRES 07/21/2018 Notary Public Name and Address of Person Creating Newly Created Legal Description (§ 38-35-106 5, C R S ) Charles C Tucker, 2038 Vermont Dnve, Suite 203, Fort Collms, CO 80525 Amen Aggregate Resource Specific Exhibits Page 75 of 84 6.4.15. Exhibit O — Owner (s) of Record of Affected Land (Surface Area) and Owners of Substance to be Mined 4170162 Pages 3 of 3 01/04/2016 02 27 PM R Fee $21 00 D Fee $0 00 Carly Koppes, Clerk and Recorder, Weld County, CO III MIMI ;iCifi ASJIIINICITAivii 'I III EXIIIBIET A LEGAL DESCRIPTION Lot A of Recorded Exemption No 0957-19-4 RE -1347 recorded on October 4, 1999 at Reception Number 2265304, being a part of the South Half of the Southeast Quarter of Section 19, Township 5 North, Range 67 West of the Sixth P M , County of Weld, State of Colorado, EXCEPT any and all rights of way conveyed to Weld County by Deed recorded in Book 114, page 343, Weld County Records, and to the Great Western Railway Company by Deed recorded in Book 190, Page 85, Weld County Records, and rights of way existing or of record for roads, ditches, and utility lines, if any, TOGETHER WITH all water, water rights, ditches, ditch rights, reservoirs, reservoir rights, and shares in water, ditch, and reservoir companies appurtenant to or used in connection with the parcels described in said Section 19, including but not limited to all right, title, and interest of the Estate in: Allotment Contract No 913 dated March 10, 2000 for twenty-six (26) units of water in Northern Colorado Water Conservancy District, sixteen (16) shares of the capital stock of The Hill and Brush Ditch Company, and that water right filed on by Emma Koenig on May 27, 1910 for three and seventy-five hundredths (3 75) feet of water per second of time out of Seepage Draw; all according to the Deed recorded on May 24, 1990 at Reception No 02214834 in the records of the Clerk and Recorder's Office of Weld County, Colorado AND A tract of land in the Northeast Quarter of Section 30, Township 5 North, Range 67 West of the Sixth P M , County of Weld, State of Colorado, described as follows Beginning at a point 2640 feet East of the Northwest corner of said Section 30, thence East 2023 feet, thence South 30 degrees 36'/2 minutes West 3067 4 feet to the South line of said Northeast Quarter, thence West 485 feet, thence North 2640 feet to the place of beginning, EXCEPT that parcel of land conveyed in the Quitclaim Deed recorded on January 16, 2001 at Reception No 2819481; TOGETHER WITH all right, title, and interest of the Estate in water, water rights, ditches, ditch rights, reservoirs, reservoir rights, and shares in water, ditch, and reservoir companies appurtenant to or used in connection with the parcels described in said Section 30 Amen Aggregate Resource Specific Exhibits Page 76 of 84 6.4.16 Exhibit P — Municipalities Within Two Miles The Municipalities within 2 miles of the permit area are as follows 1 City of Greeley 1000 10th Street Greeley, CO 80631 970-350-9777 2 Town of Johnstown 450 S Parish Ave Johnstown, CO 80534 970-587-4664 3 Town of Windsor 301 Walnut Street Windsor, CO 80550 970-674-2400 Amen Aggregate Resource Specific Exhibits Page 78 of 84 6.4.17 Exhibit Q - Proof of Mailing of Notices to Board of County Commissioners and Soil Conservation District From: Bethany Ford To: Peter Wayland Cc: Chloe Rempel; Esther Gesick Subject: RE: Notice of Filing for Mined Land Reclamation Permit Date: Wednesday, May 8, 2019 3:55:42 PM Good afternoon, This item has been received and is being processed. Thank you, Bethany Ford Deputy Clerk to the Board Weld County 1150 O Street Greeley, CO 80631 tel: 970-400-4225 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. If you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. From: Esther Gesick Sent: Wednesday, May 08, 2019 2:30 PM To: Bethany Ford <bford@weldgov.com> Cc: Chloe Rempel <crempel@weldgov.com> Subject: FW: Notice of Filing for Mined Land Reclamation Permit From: Peter Wayland <pwayland@weilandinc.com> Sent: Wednesday, May 8, 2019 2:04 PM To: Esther Gesick <egesickCWweldgov.com> Subject: Notice of Filing for Mined Land Reclamation Permit Caution: This email originated from outside of Weld County Government. Do not click links or open attachments unless you recognize the sender and know the content is safe. Amen Aggregate Resource Specific Exhibits Page 78 of 84 6 4 17 Exhibit Q - Proof of Mailing of Notices to Board of County Commissioners and Soil Conservation District Ms Gesick, Please find attached notice of Filing for a Mined Land Reclamation Permit I request that you provide an email response indicating that you have received this notice, are able to open the attachment and submit it to the BOCC Thank You Peter Wayland Weiland, Inc 303 518 2182 m Amen Aggregate Resource Specific Exhibits Page 79 of 84 6.4.17 Exhibit Q - Proof of Mailing of Notices to Board of County Commissioners and Soil Conservation District From: To: Subject: Date: Hello Peter, Thank you for the information. Dig Thompson CD Peter Wayland Re: Notice for Filing Application Regular (112) reclamation permit from the Colorado Mined Land Reclamation Board Thursday, May 9, 2019 8:51:58 AM I will ensure that the Board will review the application. As presented, I will recommend approval. We are scheduled for a Board meeting next Tuesday and I will have an opinion for you shortly thereafter. Thank you. Larry On Wed, May 8, 2019 at 1:52 PM Peter Wayland <pwayland@weilandinc.com> wrote: To whom it may concern, Please click on links below to download a notice to the board of supervisors of the Big Thompson Conservation district For a mining application as required by the Colorado Division of Reclamation Mining and Safety. There is also a link to a site location map and attached is the application form. Please respond indicating that you have received this email and attachments and indication that the materials will be submitted to the Board for their review. Please let me know it you would like any further information. Thank You I'm using Adobe Document Cloud. You can view "Conservation District Notice Amen Aggregate Resource.pdf" at: https://documentcloud.adobe.com/link/track? uri=urn%3Aaaid%3Ascds%3AUS%3Af9fd06ce-80d7-48ff-b3a2-51 c7e2da61 fc You can view "EXHIBIT B SITE INDEX MAP.pdf" at: https://documentcloud.adobe. com/link/track? Amen Aggregate Resource Specific Exhibits Page 80 of 84 6.4.17 Exhibit Q - Proof of Mailing of Notices to Board of County Commissioners and Soil Conservation District uri=urn%3Aaaid%3Ascds%3AUS%3Ad86bf6ef-7894-4fbe-bb8c-1652f057e683 Peter Wayland Weiland, Inc 303.518.2182 m Larry Lempka District Manager Big Thompson Conservation District 970-624-7570 4 Amen Aggregate Resource Specific Exhibits Page 81 of 84 6 4 18 Exhibit R — Proof of Filing with County Clerk and Recorder AFFIDAVIT I Peter Wayland, do hereby certify that a copy of the Construction Materials Regular (112) Operation Reclamation Permit Application and all Specific Exhibits has been mailed Via FedEx overnight (Tracking #787214587204) on May 13, 2019 to the Weld County Clerk & Recorders office to be placed on file for review by the public Peter Wayland Date 1 Amen Aggregate Resource Specific Exhibits Page 82 of 84 6 4.19 Exhibit S — Permanent Man -Made Structures Permanent man-made structures (structures) within 200 ft of the affected area are listed below in Table 6.4 19 — Permanent Man -Made Structures The map id's in the table correspond to the numeric callouts shown in Exhibit C-1 — Pre - Mine Plan Table 6.4.19 — Permanent Man -Made Structures MAP ID STRUCTURE 1 Utility Pole 2 Underground Gas Line 3 Underground Gas Line 4 Underground Water Main 5 Underground Gas Line 6 Weld County Roads 7 Telephone/Fiber Line Plugged & Abandoned Oil Well - Coulson 19- 8 32 9 Plugged & Abandoned Oil Well - Amen 1 Plugged & Abandoned Oil Well - Coulson 19- 10 42 11 Plugged & Abandoned Oil Well - Koenig 19-1 12 Oil Well - Croissant 19-43 13 Oil Well - Croissant 19-44 14 Petroleum Pipeline 15 Irrigation Ditch 16 Oil & Gas Facilities (Tanks, Separators etc ) 17 Oil & Gas Facilities (Tanks, Separators etc ) OWNER Poudre Valley REA Anadarko DCP Midstream Little Thompson Water District Xcel Energy Weld County Public Works Qwest Communications Anadarko Anadarko Anadarko Anadarko Anadarko Anadarko Sinclair Pipeline Company Hill & Brush Ditch Co Anadarko DCP Midstream The limits of mining shown in Exhibits C-1 Pre -Mining Plan Map, C-2 Mining Plan Map and F Reclamation Plan have been set back a minimum of 46ft for the purpose of protecting the structural integrity of soils supporting any adjacent structures The setback distance is based on a geotechnical slope stability analysis utilizing site specific geotechnical data and published data for soil strength input parameters The applicant has attempted to pursue agreements with all owners of permanent man-made structures within 200ft of the affected area by sending letters given below by certified mail Proof of mailings is given in Attachment E The Little Thompson Water District responded with a signed notarized letter stating the mine will have no negative impact on their utility Poudre Valley REA (PVREA) responding indicating they are willing to enter into an agreement whereby CEC will compensate them for any damages This agreement is still in Amen Aggregate Resource Specific Exhibits Page 83 of 84 process CEC will commit to staying 200ft from Any PVREA structures until the agreement has been executed Despite having pursued agreements with all other owners of permanent man- made structures, the permittee was unable acquire them A geotechnical slope stability analysis report has been therefore been included as Attachment F to demonstrate that the operator can safely mine within the specified setbacks without causing damage to the structures Amen Aggregate Resource Specific Exhibits Page 84 of 84 Directors: Bill Szmyd, President Steve Brandenburg Larry Brandt Paul Bukowski Kathy Gallivan-Crist Ed Martens Emily McMurtrey Little Thompson Water District June 26, 2019 District Manager: Amber Kauffman, PE 835 E Highway 56 Berthoud, CO 80513 P: 970-532-2096 F: 970-532-3734 www.LTWD.org WSI Weiland, Inc. PO Box 18087 Boulder, CO 80308 Re: Structure Agreement for Coulson Excavating Co., Inc. Mining Plan at Amen Aggregate Resource (Sec. 19, TSN, T67W, 6th PM) Mr. Wayland, Little Thompson Water District has two 20 -foot wide easements for our existing 12 -inch waterline located along the southern property boundary of the proposed Amen Aggregate Resource mine and an easement along the western property boundary where WCR 13 crosses the Big Thompson River. These easement areas, per our agreement, should not have substantial changes in grade, should not have structures constructed over the top of them, and should not have trees planted in them. For reference, the easements can be found at reception numbers; 01997228, 02279003, and 02333164. Subject to the protection of these easement areas and the District infrastructure, the proposed mining and reclamation will have no negative impacts on Little Thompson Water District's facilities. Sincerel L ber Kauffman, PE District Manager STATE OF Cote r ctc'i O )ss. r COUNTY OF i-S-trtrlt The foregoing instrument was acknowledged, subscribed and sworn before me this 1/43 u r w , 20 i ci by: Amber Kauffman, PE, District Manager. Witness my hand and official seal. My Commission Expires: HOLLY SUESS ESS NOTARY PUBLIC STATE OF COLORADO NOTARY ID 19954019361 MY COMMISSION EXPIRES MAY 13, 2021 ar4L CrAi day of Notary blic Poudre Valley Your Touchsuxic Enemy• Partner OA _ June 12, 2019 Mr. Peter Wayland President Weiland, Inc. PO Box 18087 Boulder, CO 80308 RE: Letter requested from Poudre Valley REA (PVREA) on mining activities. Dear Mr. Wayland: This correspondence is in response to your letter dated May 28, 2019 requesting PVREA to provide a letter stating that there will be "no negative effect" to our infrastructure as a result of mining activities. PVREA will provide no such letter since your activity could adversely affect the stability of our overhead utility lines and poles and also associated structures and equipment which may be outside the affected area but physically linked together and may sustain damage. If you would like to provide a structure agreement and certification that you would provide compensation for any damage to structures or associated structures that are physically linked together, we will review it before signatures. If you chose to provide a draft structure agreement and certification for review, it must contain the following wording: "The Applicant, ( ), does hereby certify that Poudre Valley REA shall be compensated for any damage from the proposed mining operation to the above listed structures located on or within 200 feet of the proposed affected area and also associated structures and equipment which may be outside the affected area but are physically linked together described within Exhibit C-1." Please let me know if you have any questions regarding this. Sincerely, az /Cr' James L. Rosintoski, PE Engineering Director Poudre Valley Rural Electric Association, Inc. o: 970.282.6431 jrosintoski@pvrea.coop Page 1 of 1 Fed December 3,2019 Dear Customer: The following is the proof -of -delivery for tracking number 787214587204. Delivery Information: Status: Signed for by: Service type: Special Handling: Delivered J.JET FedEx Standard Overnight Deliver Weekday Delivery location: Delivery date: GREELEY, CO May 14, 2019 08:50 Signature image is available. In order to view image and detailed information, the shipper or payor account number of the shipment must be provided. Shipping Information: Tracking number: Recipient: GREELEY, CO US Reference 787214587204 Thank you for choosing FedEx. Ship date: Shipper: BOULDER, CO US WEILAND INC. May 13, 2019 Fed December 3,2019 Dear Customer: The following is the proof -of -delivery for tracking number 778004099843. Delivery Information: Status: Signed for by: Service type: Special Handling: Delivered K.BURNS Delivered to: Delivery location: FedEx Standard Overnight Delivery date: Deliver Weekday Receptionist/Front Desk GREELEY, CO Nov 14, 2019 08:55 Signature image is available. In order to view image and detailed information, the shipper or payor account number of the shipment must be provided. Shipping Information: Tracking number: Recipient: GREELEY, CO US Reference Invoice number 778004099843 Thank you for choosing FedEx. Ship date: Weight: Shipper: BOULDER, CO US WEILAND INC. PKG ID: 37648 Nov 13, 2019 4.0 Ibs/1.8 kg PUBLIC NOTICE Coulson Excavating Company. Inc.; 3609 North County Road 13, Loveland CO. 80538. 970-667.2178. has filed an application for a Regular (1121 Canstruction Matenals Ope-a- lion Reclamation Permit with the Colorado Mined Land Reclamation Board under provi• sions of the Colorado Land Reclamation Act for the Extraction of Construction Materials. The proposed mine is known as the Amen Aggregate Resource. anti is located at or near Section 19, Township 5 North, Range 67 West, 6th Prime Meridian. The proposed date of commencement is September 2019, and the proposed date of completion is September 2035. The proposed future use of the land is Developed Water Resources. Additional information and ten- tative decision date may be obtained from the Division of Reclamation. Mining, and Safety. 1313 Sherman Street, Room 215, Deli- ver, Colorado 80203. (303) 866.3567, of at the Weld County Clerk and Recorder's office: 1402 N. 17th Ave., Greeley. CO 80631, or the above -named applicant. Comments must be in writing and Must be received by the Division of Reclamation. Mining, and Safety by 4:00 p.m. on July, 11 2019 Please note that under the provisions of C.R. S. 34 -125 -let et seq. Cerra rats related to noise, truck traffic, hours of operation, visu- al impacts. effects on property values and other social or economic concerns are is- sues not subject to this Offices jurisdiction. These subjects, and similar ones, are typi- catty addressed by 'your local governments, rather than then. Mining, and Safety or tte Mined Land Reclamation Board. Published: Loveland Reporter Herald May 31. June 7, 14. 21, 2019-1602199 Prairie Mountain Media, LLC PUBLISHER'S AFFIDAVIT County of Larimer State of Colorado The undersigned, JO Geddes . being first duly sviorn under oath, states and affirms as follows: 1. He/she is the legal Advertising Reviewer of Prairie Mountain Media LLC. publisher of the Loveland Reporter Herald. 2. The Loveland Reporter Herald is a newspaper of general circulation that has been published continuously and without interruption for at least fitty-two weeks in Larimer County and meets the legal requisites for a legal newspaper under Colo. Rev. Stat. 24-70-103. 3. The notice that is attached hereto is a true copy, published in the Loveland Reporter Herald in Larimer County on the following date(s): May 31 and Jun 714. 21, 2019 Subscribed and sworn to me before me this 2 P 0 (1,, on, day of Notary Public csEAS$ a i /Yu SNAYLA NAJERA NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20174031965 MYCOMMISSION EXPIRES JULY 31. 2021 Account: Ad Number Fee: 1088933 1602199 5207.76 3 ATTACHMENT A Wildlife Habitat Assessment Amen Aggregate Resource Weld County, Colorado May 23, 2018 Prepared and Submitted for Coulson Excavating Co , Inc Prepared and Submitted by Jerald M Powell, Wildlife Specialties, LLC ATTACHMENT A Table of Contents 1 INTRODUCTION 2 ENVIRONMENTAL SETTING 3 WILDLIFE RESOURCES 3 1 General Wildlife 3 2 Federally Listed Wildlife Species 3 3 Birds of Conservation Concern 3 4 Colorado State Listed Species 3 5 Raptors 3 6 Critical Wildlife Habitats and Migration Comdors 4 CONCLUSION AND RECOMMENDATIONS . 5 REFERENCES PHOTOS TABLE 1 TABLE 2 TABLE 3 List of Figures Figure 1 Coulson Amen Pit project location Figure 2 Mining parcels Figure 3 Red-tailed Hawk nest locations 3 3 3 3 4 4 4 4 5 5 5 10 . 12 13 . 14 7 8 9 2 ATTACHMENT A 1 INTRODUCTION This report addresses the potential for the presence of federally listed threatened and endangered wildlife species (and Designated Critical Habitats), migratory birds of conservation concern, Colorado Parks and Wildlife (CPW) state -listed species, and Critical Wildlife Habitats and Migration Corridors at the proposed Coulson Amen Aggregate Resource (Amen Pit) in Weld County, Colorado The legal land description for the Amen Pit is the SW '/a of Section 19 Township 5 North Range 67 West within portions of Lots 1 and 2 Figure 1 provides the location of the Amen Pit 2 ENVIRONMENTAL SETTING The proposed Amen Pit sets along the banks and within the flood plain of the Big Thompson River Surrounding land uses, since the conversion of the native shortgrass prairie into managed range land and other agriculture, have been agricultural (both grazing and row crops), industrial (Johnstown Ready Mix is to the south), gravel mining, and small acreages Recently, much of the surrounding areas have been converted from farm land into large residential communities or light industrial as Johnstown and Loveland both continue to expand Land use at the Amen Pit has predominantly been cattle grazing for many years Some row crop production, mainly corn, has occurred in the northeast corner of the Amen Pit Energy development in the form of natural gas extraction has occurred within the Amen Pit As noted previously, there is no native shortgrass prairie habitat within the Amen Pit Additionally, because of the September 2013 flood and years of grazing there is very little nparian habitat found along the Big Thompson River Plains cottonwood (Populous deltoides), most of which are large and mature, is the dominant riparian plants species Several small sloughs and wetlands are found near the Big Thompson River around which there are small willow (Salix sps ) stands No direct impacts associated with gravel mining would occur within the Big Thompson River and the river would be buffered at various distances Gravel mining would occur within the parcels shown in Figure 2 Photos 1-4 are representative of the Amen Pit 3 WILDLIFE RESOURCES The U S Fish and Wildlife Service's Information, Planning and Conservation (IPaC) website (USFWS 2018) was accessed on May 14, 2018 to identify the federally listed (Table 1) threatened, endangered and candidate species (and designated critical habitat) and migratory birds of conservation concern (Table 2) with potential for occurrence near the proposed Chung Tai Zen Center The Colorado Parks and Wildlife's (CPW 2018) list of state threatened, endangered, and species of special concern (Table 3) was also referenced Sources of information on the habitat requirements for wildlife species presented in the above lists comes from the Colorado Breeding Bird Atlas 2❑d Edition (Wickersham 2016), Mammals of Colorado (Armstrong et al 2011), and Amphibians and Reptiles in Colorado (Hammerson, 1999) Online resources consisted of the Colorado Parks and Wildlife website, USDA Forest Service species accounts, and NatureServe (2018) Likelihood of presence or absence was based on each species specific habitat requirements Wildlife use and habitats were evaluated by Jerry Powell of Wildlife Specialties during field reconnaissance completed on May 14, 2018 3 1 General Wildhfe The Amen Pit does not offer habitat for wildlife species that require specific habitat types (e g native riparian vegetation) The Amen Pit does offer suitable habitat capable of supporting components of the life history needs of habitat generalists (species which do not require a specific habitat type) Predators and scavengers including Raccoons (Procyon lotor), Striped Skunks (Mephitis mephitis), and Coyotes (Cams latrans), based on tracks and scat, regularly use the Amen Pit as part of their home ranges Muskrat's (Ondatra zibethicus) were seen 3 ATTACHMENT A swimming within the Big Thompson River The Amen Pit provides suitable habitat for many small mammal species, species expected to be present include the deer mouse (Peromyscus mamculatus), house mouse (Mus musculus), and voles (Microtus sps ) Ducks and geese use the Big Thompson River year-round, with higher concentrations found during the fall and winter as waterfowl migrate through or over -winter along the Front Range Ducks and geese observed during the sight review were limited to the Canada Goose (Branta canadensis) and Mallard (Anas platyrhynchos) Neotropical migrant landbird species observed during the sight review include American Kestrel (Falco sparverius), American Robin (Turdus migratorius), Brown -headed Cowbird (Molothrus ater), House Wren (Troglodytes aedon), Northern Flicker (Colaptes auratus), Red-tailed Hawk (Buteo jamaicensis), Red -winged Blackbird (Agelaius phoeniceus), Song Sparrow (Melospiza melodia), and Yellow -headed Blackbird (Xanthocephalus xanthocephalus) Reptiles and amphibians known to be or likely are present within the Amen Pit include the Boreal Chorus Frog (Pseudacris maculata), Gopher (Bull) Snake (Pituophis catentfer sayi), Western Terrestrial Garter Snake (Thamnophrs elegans), and Woodhouse's Toad (Anaxyrus woodhousu) 3.2 Federally Listed Wildlife Species The project area does not offer suitable habitat for any federally listed wildlife species (Table 1) There is no habitat for the Preble's Meadow Jumping Mouse (PMJM - Zapus hudsonius preblei) Habitat for PMJM along the Front Range of Colorado typically consists of a matrix of riparian vegetation and associated upland grasslands and shrubs (Armstrong et al 2011, Shenk and Sivert 1999) Ripanan vegetation typically is varied with a mixed overstory comprised of willows (Sala spp ) and cottonwoods (Populus spp ) and an understory of scattered shrubs including snowberry (Symphoricarpos spp ) Two major habitat components appear necessary, open water and dense cover Both of these are not found within the project area In addition to these habitat features suitable habitat must also provide requirements for survival throughout the life cycle (Shenk 1998) This means that habitat for the active period and hibernation period are essential Active period habitat must provide areas where reproductive activities and daily survival can occur Hibernation habitat is not just that habitat in which hibernacula are created but also provides adequate food sources for fat storage during hibernation Habitat for active and hibernating periods does not have to occur in the same location but must be connected Habitat for active and hibernating periods does not occur within the project area 3.3 Birds of Conservation Concern The Amen Pit provides habitat for one species of Migratory Birds of Conservation Concern, the Bald Eagle (Haliaeetus leucocephalus), identified by the USFWS (Table 2) 3 4 Colorado State Listed Species Of the species identified by the CPW (Table 3) as state sensitive, only the Northern Leopard Frog (Rana pipiens) and the Common Garter Snake (Thamnophis sirtalis) have potential habitat within the project area Both of these species could occur along the Big Thompson River It is likely that Bald Eagles occasionally forage over the Amen Pit 3 5 Raptors Two active Red-tailed Hawk nests were identified within and near the Amen Pit Figure 3 provides the location of the nests in relation to the proposed mining parcels One nest is located within or directly adjacent to a proposed mining parcel The second nest is on private property located next to the Amen Pit but close to a proposed mining parcel 4 ATTACHMENT A 3.6 Critical Wildlife Habitats and Migration Corridors No critical wildlife habitat identified by the CPW or other entities is found within or near the Amen Pit. Similarly, there are no mapped migration corridors found within or near the Amen Pit. The Big Thompson River corridor is likely used by resident wildlife as a movement corridor, though most of the area to the south is small acreages and gravel ponds. 4. CONCLUSION AND RECOMMENDATIONS There is no habitat present for any federally listed, candidate or proposed species at the Amen Pit. Additionally, there is no Designated Critical Habitat at or near the Amen Pit. Aside from the Bald Eagle, the Amen Pit also does not provide suitable habitat for any Migratory Birds of Conservation Concern (Table 2). Colorado state listed sensitive species (Table 3) with potentially suitable habitat within the Amen Pit are limited to the Bald Eagle, Common Garter Snake (Thamnophis sirtalis), Ferruginous Hawk (Buteo regalis), Northern Leopard Frog (Lithobates pipiens), and River Otter (Lontra canadensis). The state sensitive species with potentially suitable habitat within the Amen Pit generally are all associated with and dependent on flowing or standing water. Since the Big Thompson River will not be impacted by the proposed mining activities, these species will not be impacted by the proposed mining activities. The large plains cottonwood trees within the Amen Pit offer suitable nesting habitat for bald eagles. Because Bald Eagles begin nest construction and courtship in December, nest surveys will be necessary if mining has not occurred prior to January 1, 2019. The Amen Pit has two active Red-tailed Hawk nests either within the Special Use Permit boundary or directly adjacent to it. The CPW recommends the following for protection of active Red-tailed Hawk nests: Nest Site: No surface occupancy (beyond that which historically occurred in the area) within 1/3 mile radius of active nests. There is a seasonal restriction to human encroachment within 1/3 mile radius of active nests from February 15 through July 15. Some Red-tailed Hawks have adapted to urbanization and may tolerate human habitation to within 200 yards of their nest. Development that encroaches on rural sites is likely to cause abandonment. The combination of the buffers surrounding the Big Thompson River and the fact that most wildlife movement is either crepuscular (active at dawn or dusk) or nocturnal, periods when mining activities would be minimal or non- existent, wildlife movement along the river would not be significantly impacted by the proposed mining. The removal of livestock from the Amen Pit during mining would result in an increase in grasses, forbs, and shrubs along the Big Thompson River. The release of the grazing pressure would benefit wildlife by providing more food and cover which is currently limiting wildlife use of the Amen Pit. 5. REFERENCES Armstrong, D.M., Fitzgerald, J.P. and C.A. Meaney. 2011. Mammals of Colorado — 2nd Ed. Denver Museum of Natural History and University Press of Colorado. 467 pp. Hammerson, G.A. 1999. Amphibians and Reptiles in Colorado. 2nd edition. University Press of Colorado and Colorado Division of Wildlife. 484 pp. Wickersham, L.E. 2016. Colorado breeding bird atlas 2nd Edition. Colorado Bird Atlas Partnership and Colorado Division of Wildlife. NatureServe. 2018. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://www.natureserve.org/explorer. 5 ATTACHMENT A Shenk, T 1998 Conservation assessment and preliminary conservation strategy for Preble's meadow jumping mouse (Zapus hudsomus preblei) Unpublished report of the Colorado Division of Wildlife 38 pp + appendix Shenk, T M and M M Sivert 1999 Movement patterns of Preble's meadow jumping mouse (Zapus hudsomus preblei) as they vary across time and space Unpublished report of the Colorado Division of Wildlife 27 pp + figures 6 ATTACHMENT A ATTACHMENT A Photos Photo 1. Picture of the Big Thompson River showing the lack of riparian shrubs and forbs. Photo 2. Looking south down the Big Thompson River. 10 ATTACHMENT A Photo 3. Wetlands representing suitable amphibian breeding habitat. Photo 4. Looking south across the Amen Pit at the Ready Mix cement plant. 11 ATTACHMENT A -, ' , '' - - ;•0� , , Table 1, � fi �`�'� -; ti ;,t , ; - IPAC Federally Listed & Proposed Species of Concern - , _ ' .'' , Special -Ilse -Permit, .7. Coulson Amen Pit �;�` , Weld County, Colorado - - - Species Status Habitat Requirements Potential for occurrence Fishes Pallid Sturgeon Scaphirhynchus albus FE Lower reaches of the Platte River and upper Missouri River Does not occur in the project area, not appropriate habitat Birds Least Tern (interior population) Sterna antdlarum FE Rivers with brdad exposed sand bars Does not occur in the project area, not appropriate habitat Mexican Spotted Owl Strix occidentahs lucada FT Narrow rocky canyons with trees Does not occur in the project area, not appropriate habitat Piping Plover Charadrius melodus FT Open ground away from water, often on broad exposed sand bars Does not occur in the project area, not appropriate habitat Whooping Crane Grus americana FE Muskeg, prairie pools, marshes Does not occur in the project area, not appropriate habitat Mammals Preble's Meadow Jumping Mouse Zapus hudsomous preblei FT Riparian areas with lush vegetation Does not occur in the project area, not appropriate habitat FE = Federally Endangered, FT = Federally Threatened 12 ATTACHMENT A Table 2 , IPaC Migratory Birds of Conservation Concern - ' Special Use Permit - Coulson Amen Pit Weld County,' Colorado t Species Habitat Requirements Potential for occurrence Bald Eagle Hahaeetus leucocephalus Areas along rivers or lakes with large trees for nesting and roosting Nesting habitat present but no nests are found within the Special Use Permit boundaries Cassin's Sparrow Aunophda cossmu Heavily grazed grasslands of eastern Colorado where cholla cactus, yucca, rabbitbrush, or sand sage provides shrubby overstory (Wickersham 2016) No potential for occurrence Golden Eagle Aquila chrysaetos Golden Eagles live in open and semi -open country featuring native vegetation, they avoid developed areas and uninterrupted stretches of forest Golden Eagles nest on cliffs and steep escarpments in grassland, chapparal, shrubland, forest, and other vegetated areas p No otential for occurrence Lark Bunting Calamospiza melanocorys Grasslands and agricultural areas, mostly associated with the eastern plains tential otential for occurrence po 13 ATTACHMENT A - - ' Table 3 _ Colorado Parks -and Wildlife Endangered, Threatened, and Species of Special Concern f - - - Special Use Permit - Coulson Amen Pit: Weld County, Colorado ti _ Species Status* Habitat Requirements Potential for occurrence Fish Arkansas Darter Etheostoma cragm, ST Found only in tributaries of the Arkansas River No potential for occurrence Bonytail Gila elegans FE, SE Found in the main stem and tributaries of the Colorado River No potential for occurrence Brassy Minnow Hybognathus hankinsoni ST Found in S Platte and Republican Rivers No potential for occurrence Colorado Pikeminnow Ptychocheilus Lucius FE ST Found in the main stem and tributaries of the Colorado River No potential for occurrence Colorado River Cutthroat Trout Oncorhynchus clarki pleuriticus SC Found in the Colorado River Basin No potential for occurrence Colorado Roundtail Chub Gila robusta SC A large river fish found in western Colorado No potential for occurrence Common Shiner Luxilus cornutus ST Found in tributary streams of the S Platte River No potential for occurrence Flathead Chub Platygobio gracilus SC Found in mainstems of turbid streams and rivers No potential for occurrence Greenback Cutthroat Trout Oncorhynchus clarki stomas FT, ST High altitude mountain streams with no salmonids No potential for occurrence Humpback Chub Gila cypha FE ST Found in the main stem and tributaries of the Colorado River No potential for occurrence Iowa Darter Etheostoma exile, SC Found in some plains streams in northeastern Colorado No potential for occurrence Lake Chub Couesius plumbeus SE Extirpated in Colorado (Woodling 1985) No potential for occurrence Mountain Sucker Catostomus playtrhynchus SC Found in smaller rivers and streams in northwestern Colorado No potential for occurrence Northern Redbelly Dace Phoxinus eos SE Upper reach tributaries of the S Platte and Platte River No potential for occurrence Plains Minnow Hybognathus placitus SE Prefer main channel areas with some current and sandy bottoms Found in eastern Colorado No potential for occurrence Plains Orangethroat Darter Etheostoma spectabile SC Found in small streams of the Republican Basin No potential for occurrence 14 ATTACHMENT A Table 3 - -- ' Colorado Parks,and Wildlife Endangered, Threatened, and'Species of Special Concern _ ; Special Use Permit - Coulson Amen Pit - , Weld County, Colorado' - v , Species Status* Habitat Requirements Potential for occurrence Razorback Sucker Xyrauchen texanus FE, SE Found in the main stem and tributaries of the Colorado River No potential for occurrence Rio Grande Chub Gila Pandora SC Restricted to the Rio Grande Basin in Colorado No potential for occurrence Rio Grande Cutthroat Trout Oncorhynchus clarki virgmahs SC Restricted to the Rio Grande'Basin in Colorado No potential for occurrence Rio Grande Sucker Catostomus plebeius SE Restricted to the Rio Grande Basin in southern Colorado No potential for occurrence Southern Redbelly Dace Phoxinus erythrogaster SE One population known in Arkansas River tributary No potential for occurrence Stonecat Noturus flavus SC Found in fast water riffles and runs of streams No potential for occurrence Suckermouth Minnow Phenacobius mirabdis SE Found in riffle areas of warm prairie streams of all sizes No potential for occurrence Birds American Peregrine Falcon Falco peregrinus anatum SC Nests on ledges of high cliffs No potential for occurrence Bald Eagle Hahaeetus leucocephalus SC Large, mature cottonwoods or pines near large water bodies Suitable nesting habitat is found within the Special Use Permit boundaries Burrowing Owl Athene cunicularia ST Nest in rodent burrows in grasslands, shrublands, deserts, and grassy urban areas (golf courses) No potential for occurrence Columbian Sharp -Tailed Grouse Tympanuchus phasianellus columbianus SC Sagebrush shrublands No potential for occurrence Ferruginous Hawk Buteo regahs SC Vast expanses of ungrazed or lightly grazed grassland and shrubland and shortgrass prairie Potentially suitable habitat is present within the Special Use Permit boundaries Greater Sage -Grouse Centrocercus urophasianus SC Sagebrush shrublands in northwestern Colorado No potential for occurrence Greater Sandhill Crane Grus canadensis tabida SC Breed in wetland habitats, particularly flooded fields and beaver ponds No potential for occurrence Gunnison Sage -Grouse Centrocercus minim us SC Sage communities in the Gunnison Basin No potential for occurrence 15 ATTACHMENT A r 'U <'r�ti "„-r,; yyTable 3 ti �� _` `>s - <; <. �Color'ado Parks aii i Wildlife'Endangered;;Threatened, rand Species ofrSpecial Concern �_ Special'Use Permit =`Coulson Amen Pit ' "t� , , " 4 a i ., ` t.�T C }'%h^�� r � "Its(' ; �� } `� r _ ''r = . Weld County, Colorado 'w - s , , _°''Fz ' Species Status* Habitat Requirements ` Potential for occurrence v Lesser Prairie -Chicken Tympanuchus pallidicmctus ST Optimal habitat is midgrass to tallgrass prairie for nests and winter cover No potential for occurrence Long -Billed Curlew Numerous americanus SC Shortgrass prairie No potential for occurrence Mountain Plover Charadrius montanus SC Grazed shortgrass prairie and fallow fields No potential for occurrence Plains Sharp -Tailed Grouse Tympanuchus phasianellus James', SE Rolling hills with scrub oak thickets and grassy glades No potential for occurrence Western Snowy Plover Charadnus alexandnnus SC Sandy open beaches, dry salt flats, dredge spoils, and river bars No potential for occurrence Western Yellow -billed Cuckoo Coccyzus americanus SC Found along major river drainages No potential for occurrence Mammals Black -footed Ferret Mustela rognpes FE, SE Large prairie dog colonies No potential for occurrence Black -tailed Prairie Dog Cynomys ludovicianus SC Open prairie grasslands, disturbed areas, fallow and mowed agriculture fields Suitable habitat is not present, none are found within the Special Use Permit boundaries Botta's Pocket Gopher Thomomy bottae rubidus SC Occur in southern Colorado No potential for occurrence Gray Wolf Canis lupus FE, SE Believed to be extirpated in Colorado No potential for occurrence Grizzly Bear Ursus arctos FT, SE Believed to be extirpated in Colorado No potential for occurrence Kit Fox Vulpes macrotis SE Deserts of the Southwest No potential for occurrence Lynx Lynx canadensis FT, SE High altitude spruce -fir forests No potential for occurrence Northern Pocket Gopher Thomomys talpoides macrons SC Many habitat types including agricultural lands, pasture lands, semidesert shrublands, and grasslands No potential for occurrence Preble's Meadow Jumping Mouse Zapus hudsonius preble, FT, ST Riparian areas with lush vegetation No potential for occurrence River Otter Lontra canadensis ST Large waterways throughout Colorado Suitable habitat is present within the Special Use Permit boundaries 16 ' ATTACHMENT A = . _ - - ` s , ,Table 3 , r -- - _ - _ - Colorado Parks arid Wildlife Endangered, Tiireatened, and Species'of Special Concern , Special Use Permit - Coulson Amen Pit _ ' _ Weld County; Colorado ' - - - Species Status* Habitat Requirements Potential for occurrence Swift Fox Vulpes velox SC Short and mid -grass prairies of the Great Plains No potential for occurrence Townsend's Big -eared Bat Corynorhinus townsendn SC Occupies semidesert shrublands, pinon- juniper woodlands, and open montane forests No potential for occurrence Wolverine Gulo gulo SE Alpine, subalpine, and high -altitude forests with little to no human intrusion No potential for occurrence Amphibians/Reptiles Boreal Toad Bufo boreas boreas SE High altitude wetlands, ponds, etc No potential for occurrence Couch's Spadefoot Scaphiopus couchn SC Eastern Colorado plains No potential for occurrence Great Plains Narrowmouth Toad Gastrophryne ohvacea SC Extreme southeastern Colorado No potential for occurrence Northern Cricket Frog Acres crep tans SC Found in Yuma, Weld and Morgan Counties at elevations between 3,500- 3,600 feet No potential for occurrence Northern Leopard Frog Rana pipiens SC Wet meadows and the banks of and shallows of marshes, ponds, lakes, streams, irrigation ditches Suitable habitat is present within the Special Use Permit boundaries Plains Leopard Frog Rana blairi SC Eastern Colorado and southeastern Colorado No potential for occurrence Wood Frog Rana sylvatica SC Found in Colorado in mountain forests in Jackson and Larimer Counties only No potential for occurrence Triploid Checkered Whiptail Cnemidophorus neotesselatus SC Foothills of the Rocky Mountains in Fremont County eastward to Pueblo and Stone City in Pueblo County No potential for occurrence Midget Faded Rattlesnake Crotalus midis concolor SC Desert lands in northwestern Colorado No potential for occurrence Longnose Leopard Lizard Gambelia wislrzenn SC Occurs in west -central Colorado and extreme southwestern Colorado No potential for occurrence Yellow Mud Turtle Kmosternon flavescens SC Occurs in eastern Colorado No potential for occurrence Common King Snake Lampropeltis getula SC Occurs in southwestern and southeastern Colorado No potential for occurrence Texas Blind Snake Leptotyphlops dulcis SC Occurs in extreme southeastern No potential for occurrence 17 ATTACHMENT A " :` - Table 3 Colorado Parks and Wildlife Endangered, -Threatened, and SpeciesofSpecial'Concern i ° � _Special Use Permit -',Coulson Amen Pit ,�` ;', ,� , Y s -- Weld County; Colorado ,, , �� " ,� _ Species Status* Habitat Requirements Potential for occurrence Colorado Texas Horned Lizard Phrynosoma cornutum SC Occurs in southeastern Colorado No potential for occurrence Roundtail Horned Lizard Phrynosoma modestum SC Occurs in extreme northwestern Otero County No potential for occurrence Massasauga Sistrurus catenatus SC Occurs in shortgrass prairie habitats in southeastern Colorado No potential for occurrence Common Garter Snake Thamnophis sirtals SC Restricted to aquatic, wetland and riparian habitats at elevations below 6,000 feet seldom found at isolated ponds Suitable habitat is present within the Special Use Permit boundaries *SE = State Endangered ST = State Threatened SC = State Special Concern (not a statutory category) 18 ATTACHMENT B VEGETATION ASSESSMENT AMEN AGGREGATE RESOURCE Weld County, Colorado prepared for: WEILAND, INC P.O. BOX 18087, BOULDER, CO 80308 WESTERN ECOLOGICAL RESOURCE, INC 71 1 WALNUT STREET, BOULDER, CO 80302 prepared by: BIRCH ECOLOGY, LLC 429 MAIN STREET, LYONS, CO 80540 Z BIRCH ECOLOGY BIRCH ECOLOGY July 2018 ATTACHMENT B TABLE OF CONTENTS Section/Title Pa e 1.0 INTRODUCTION 1 2.0 ENVIRONMENTAL SETTING 1 3.0 METHODS 2 4.0 VEGETATION TYPES 2 4.1 Wetlands 2 4.2 Riparian Habitats 3 4.3 Pasture Grasses 3 4.4 Gravel Deposits 3 5.0 NRCS SOIL TYPES 3 6.0 FEDERALLY LISTED SPECIES HABITAT ASSESSMENT 4 7.0 FIGURES 5 8.0 TABLES 13 9.0 PHOTOS 18 10.0 REFERENCES 26 Appendix A. Soil Map Unit Descriptions 28 ATTACHMENT B LIST OF FIGURES N umber/Title Page Figure 1. Project Location Map. 6 Figure 2. Aerial Photo7 Figure 3. Wetland Map 8 Figure 4. Vegetation Type Map, Aerial Photo Base 9 Figure 5. Vegetation Type Map, Topographic Base. 10 Figure 6. NRCS Soil Map. 11 Figure 7. NRCS Soil Map with Vegetation Types12 LIST OF TABLES N umber/Title Page Table 1. Summary of Vegetation Types 14 Table 2. Wetlands Summary 15 Table 3. Vascular Plant Species List 16 LIST OF PHOTOS N umber/Title Page Photo 1. Cobbles deposited along the Big Thompson River by the 2013 floods. (5/15/18) 19 Photo 2. Pooled water from recent heavy rains in the Hill & Brush Ditch. (5/15/18) . 19 Photo 3. The Ditch Wetland is along a return flow ditch. (5/15/18) . 20 Photo 4. Mature cottonwood gallery forest south of the Hill & Brush Ditch. (5/15/18) . 20 Photo 5. Pastures and Big Thompson River on the Croissant Farms Parcel. (5/15/18) . 21 Photo 6. Wetland A with shallow standing water in the south end. (5/15/18)21 Photo 7. Mature plains cottonwood trees adjacent to Wetland A. (5/15/18). 22 Photo 8. Wetland B is a shallow seasonal aquatic site. (5/15/18). 22 Photo 9. Wetland C and Soil Pit 7. (5/15/18)23 Photo 10. Wetland D and Soil Pit 6. (5/15/18). 23 Photo 11. Young cottonwood trees colonize a gravel deposit. (5/15/18) . 24 Photo 12. Wetland E is located near the Big Thompson River. (5/15/18). 24 Photo 13. Wetland F is in a swale with Nebraska sedge in the wettest areas. (5/15/18) 25 Photo 14. Wetland G is just west of the Ditch Wetland. Pit 4 is pictured. (5/15/18) . 25 ATTACHMENT B 1.0 INTRODUCTION Coulson Excavating Company is developing plans to construct a sand and gravel pit known as the Aggregate Resource on two parcels located northeast of the intersection of Weld County Roads 54 and 13. The project site is located southeast of Johnstown, along the Big Thompson River in Section 19 of Township 5 North and Range 76 in Weld County, Colorado (Figure 1). The western parcel owned by Coulson Excavating measures approximately 117.6 acres and the eastern parcel owned by Croissant Family Farm measures 69.5 acres. To aid in project planning for the special use review, a vegetation assessment was prepared for seven proposed mining areas that cover a combined ± 95.7 acres (Figure 2). This Vegetation Assessment focuses on the existing vegetation conditions within the seven proposed mining areas at the Aggregate Resource project site. It documents the vegetation types and their areas, discusses the dominant species and cover classes, and summarizes the results of the wetland delineation and a habitat assessment for two federally listed threatened plants, the Ute ladies' tresses orchid (Spiranthes diluvialis) and Colorado butterfly plant (Gourd neomexicana ssp. coloradensis). Please note, all Figures are included in Section 7.0, Tables are in Section 8.0, and Photos are in Section 9.0. 2.0 ENVIRONMENTAL SETTING The vegetation assessment focuses on seven proposed mining areas that cover a total of ±95.7 acres. These mining areas are located on the historic floodplain of the Big Thompson River on both the left and right sides. The 2013 flood event impacted the Big Thompson River through the project site, leaving large cobble and sand deposits along the river corridor which are visible on the aerial photograph (Photo 1; Figure 2) . As shown by the Vegetation Type Map (Figure 3), several oxbow wetlands were identified on the historic floodplain of the river within the proposed mining areas. The project site has had an agricultural land use history. The pastures south and east of the Big Thompson River are grazed by cattle, but the areas on the north side did not show evidence of recent grazing. The Hill and Brush Ditch, a diversion from the Big Thompson River, is located just north of the proposed mining areas (Photo 2). A wetland -lined lateral ditch was flowing south from the Hill and Brush Ditch through the proposed mining area to the Big Thompson River at the time of the delineation in May 2018 (Photo 3) . The water appeared to be the result of recent heavy rainfall in the area that had collected in the Hill & Brush ditch, since it was not flowing at the time and only had pooled water in the area of the diversion structure. Smaller irrigation laterals east of the return flow ditch were in disrepair and appear to have been abandoned. There are two active oil and gas wells on the Croissant Family Farm Parcel, and two unused oil and gas wells and a plugged and abandoned oil well are located on the Coulson Parcel (Figure 2) . Mature cottonwood gallery forest lines the Big Thompson River and the western portion of the Hill and Brush Ditch on the Coulson parcel (Photo 4) . However, there are few trees on the eastern Croissant Farms parcel. The pasture areas are dominated by introduced grasses and weeds (Photo 5), as discussed below. 1 ATTACHMENT B 3.0 METHODS ✓ egetation types were mapped and described by Heather Houston of Birch Ecology, LLC, based on field reconnaissance conducted on May 15, 2018. Vegetation types were d igitized in ArcGIS to create the map and calculate areas. The wetlands were delineated by Heather Houston and David Buscher of Buscher Soil & Environmental, Inc. in accordance with the U.S. Army Corps of Engineers Wetland Delineation Manual (1987) and the Regional Supplement for the Great Plains Region (2010) on May 15, 2018. Wetland flagging was located with a survey -grade GPS by Peter Wayland of Weiland, Inc. of Boulder, Colorado. The surveyed wetland boundary is illustrated on the maps contained in this report; however, the boundary has not yet been reviewed by the U.S. Army Corps of Engineers. A Wetland Delineation Report has been prepared and will be submitted to the Corps for their review. 4.0 VEGETATION TYPES The vegetation types within the seven proposed mining areas are briefly described below and their areas are summarized in Table 1. Figure 3 is the Wetland Map, Figure 4 illustrates the vegetation types on an aerial photo base, and Figure 5 shows the vegetation types on a topographic base map. 4.1 Wetlands Approximately 45,049 square feet (1 .03 acres) of wetlands were mapped within the seven proposed mining areas (Figure 3, Table 2, Photos 6-14). Most of the wetland development occurs within shallow depressions and swales within the pasture area that are historic secondary channels of the Big Thompson River. These wetlands are dominated by both native and introduced graminoids. In the wettest areas, native species such as Nebraska sedge (Carex nebrascensis) and threesquare bulrush (Scirpus pungens) are the dominant species. In the seasonally saturated soil at the perimeter, native species including saltmeadow rush (Juncus gerardii), Emory sedge (Carex emoryi), saltgrass (Distichlis spicata), clustered field sedge (Carex praegracilis), Baltic rush (Juncus arcticus ssp. ater), and foxtail barley (Hordeum jubatum) grow with introduced grasses such as the noxious weed quackgrass (Elytrigia repens) , reed canarygrass (Phalaris arundinacea) , intermediate wheatgrass (Thinopyrum intermedium) , meadow fescue (Festuca pratensis), and Canada bluegrass (Poa compressa) . Most of the common forbs are weedy species that occur in the seasonally saturated area, including curly dock (Rumex crispus) , dandelion (Taraxacum o fficinale), common plantain (Plantago major), prickly lettuce (Lactuca serriola), and the n oxious weeds Canada thistle (Cirsium arvense) , teasel (Dipsacus fullonum) , and broadleaf pepperweed (Lepidium latifolium) . Along the ditch that connects the Hill and Brush Ditch to the Big Thompson River, the native forbs threelobe beggarticks (Bidens tripartita) and American speedwell (Veronica americana) also occur. There are no willow -dominated areas, and the plains cottonwoods (Populus deltoides) occur in the upland riparian habitats as described below. Table 2 is a summary of the wetlands identified in the project area and Table 3 lists the vascular plant species observed during field reconnaissance in May 2018. 2 ATTACHMENT B 4.2 Riparian Habitats Approximately 6.87 acres of upland riparian habitat occur within the seven proposed mining areas (Table 1; Figures 4 & 5) . Nearly all of this area consists of a mature cottonwood gallery forest that extends south from the Hill and Brush Ditch into the n orthernmost mining area in the northwestern corner of the Coulson Parcel (Photos 4, 7 & 8) . A few small areas of cottonwood forest associated with the Big Thompson River occur in mining areas on the south side of the river within the Coulson Parcel. The riparian habitat mapped on the Croissant Family Farm parcel is a single mature cottonwood tree. The riparian areas are dominated by plains cottonwood trees, and generally lack a shrub layer. The herbaceous understory is dominated by upland pasture grasses and weeds. The most abundant grasses include the noxious weed quackgrass and intermediate wheatgrass. The noxious weed white top (Cardaria draba) , a perennial forb, is also common in the u nderstory. 4.3 Pasture Grasses Upland pasture grasses growing with weedy forbs are the most abundant vegetation type in the seven proposed mining areas, covering approximately 86.76 acres (Table 1; Figures 4 & 5) . The pastures are grazed by cattle, with the heavier grazing impacts on the Croissant Family Farm parcel (Photo 5). The dominant species in the pastures include quackgrass, intermediate wheatgrass, meadow fescue, Canada bluegrass, and the native western wheatgrass (Pascopyrum smithii) . In some areas north of the Big Thompson River, the n oxious weed cheatgrass (Bromus tectorum) is also common. Weedy forbs are scattered throughout the pasture, including the noxious weeds field bindweed (Convolvulus arvensis), cranesbill (Erodium cicutarium), musk thistle (Carduus nutans ssp. macrolepis), tumble mustard (Sisymbrium altissimum), and great mullein (Verbascum thapsus) . 4.4 Gravel Deposits A small portion of the western mining area on the Croissant Family Farm parcel is covered by gravel deposits from the 2013 floods (Figures 4 & 5, Photo 11). The gravel deposit covers approximately 0.26 acre, and is located just south of the Big Thompson River. Within the proposed mining area, the gravel deposit is being colonized by cheatgrass, curly dock, intermediate wheatgrass, and small plains cottonwood trees. 5.0 NRCS SOIL TYPES Figure 6 illustrates the soil types mapped by the NRCS for the project area. As shown by the figure, nearly all of the area encompassed by the 7 proposed pits is mapped as Aquolls and Aquents with a gravelly substratum. A small area of the northwestern pit is mapped as Bankard Sandy Loam, 0-3% slopes, frequently flooded. The relationship of these soil types to the vegetation communities described above in Section 4.0 is illustrated by Figure 7. Appendix A includes detailed descriptions of these two map units as included in the Weld County Soil Survey (Southern Part) . 3 ATTACHMENT B 6.0 FEDERALLY LISTED SPECIES HABITAT ASSESSMENT The U.S. Fish & Wildlife Service has identified wetlands in Lorimer County as potential habitat for two federally listed plants: the Ute ladies' tresses orchid (Spiranthes diluvialis) and the Colorado butterfly plant (Gaura neomexicana ssp. neomexicano) . To evaluate whether the project site is potential habitat for these two rare plants, a habitat assessment was completed for the seven proposed mining areas. Although the project site has the appropriate topography and soil types, it is dominated by numerous aggressive, introduced species that typically exclude these two rare plants because they form tall, dense and often monotypic stands. These include areas of reed canarygrass, quackgrass, intermediate wheatgrass, and weeds such as Canada thistle and teasel. In addition, the native forb species which are commonly associated with the high - quality wetland and riparian habitats that support these plants were not observed onsite. The project site is unlikely to support the Colorado butterfly plant or Ute ladies tresses orchid and the proposed gravel operation should not directly impact these plants. A Habitat Assessment Report has been prepared and will be submitted to the U.S. Fish & Wildlife Service for their review. 4 COLORADO 104°57'0"W NN Officer Big Thompson River 104°57'0"W 104°56'0"W ATTACHMENT B a Koenig O • -� ,- ier-z -. )-- Coulson Parcel t 104°56'0"W Hill & Brush Ditch 104°55'0"W I Weld County Rd. 54 z 0 N 0 O a \ "--- ` \Copyright:b jOj13IIN_ ,..e.-- 0 atoral Geographic'Society cyubb-e-dAettlen- 1 104°55'0"W N ° O icr BASE: USGS 7.5' Johnstown Quadrangle, Colorado Map Location N A 1:24,000 6 Figure 1. Project Location Map Amen Pit Prepared by: B r1 ECOLOGY Birch Ecology LLC 429 Main Street P.O. Box 170 Lyons, CO 80540 (720) 350-2530 www. birchecology.com • Il I It ♦ 41 I I/ ♦ -- ' t t �•� ter♦ • i t s ••y .♦ I• I •• 010.4001111. •♦ t• �� / t %•�O.00 t / 5 ♦• :..�• 4. ;;••�� Coulson Parcel : ••..a�•4' •* NIIII.........................................................i .....1 Lan .....................A 10456'0"W z 0 ih N 0 O l eat 1• .• • - •O • • sewn or S •eakt •• ••• •• • �• • •• 0. _ Wetland D 404 sf (0.01 ac) sin IINV_ t, Hill & Brush Ditch %' % -at, elle Nam edb%�' •� �� '''4 "\,,, �. I �_ /.merit•• a•�• _tomes M.......% dere*• IM . t.. 104-5610"W Wetland C 733 sf (0.02 ac) • • pis. •� r aa ...a..t.......n.a.aa..t�.ti ............................../ .....r� L. .a 4 •er S alleaSalapses _ Weld County Road 54 Wetland E 844 sf (0.02 ac) i r a Wetland F 11,238 sf (0.26 ac) Wetland G 1,590 sf (0.04 ac) Big Thompson River LEGEND Wetlands • Soil Pits Proposed Gravel Pits Parcel Boundary N A 1:6,500 Date: July 2018 8 Figure 3. Wetland Map Amen Pit Weld County, CO Prepared by: IBIRCII EcuLOC:Y �r Birch Ecology tic 429 Main Street P.O. Box 170 Lyons, CO 8054C 1720!350-2530 www. birchecology.com 0 c) N 0 O 001 ��want► .•1 II I 1 ee�4 1•• r r r t r r II I II r r II r • ■ i ■ 1 I 11■ I i i II E I I r i i r r r r r r g r i ■ I i ■ I II■ ■ I i ■ r I ■ Ii iii II ssss•saas..sasa.s.sss.MssssashwsssssssOssss_ssss_s..INsssssasl ISOMM .? Laaa -3#.'.' :- Jb .f y - - 104-56'0"W A TT a eel tl ear sIT n 104 56'0"W LEGEND Vegetation Types Wetlands Riparian Habitat Pasture Grasses Gravel Deposits Wetland C 733 sf (0.02 ac) Proposed Pits Parcel Boundary Wetland B 437 sf (0.01 ac) Weld County Road 54 Hill & Brush Ditch Wetland F 11,238 sf (0.26 ac) N A 1:6,500 Date: July 2018 10 "!l Wetland G 1,590 sf (0.04 ac) Big Thompson River a CopyyagW.,Q,2®b3I t!ional Geographic Society, i-cubed Figure 5. Vegetation Type Map Topographic Base Amen Pit Weld County, CO Prepared by: I (31101 l ��ltl.i.K.1 Birch Ecology RC 429 Main Street P.O. Box IIC Lyons. CO 80540 1720) 35C-2530 www birchecology.com 104'56'0"W LEGEND NRCS Soil Data Map Units 3- Aquolls and Aquents, Gravelly Substratum 10 - Bankard Sandy Loam, 0-3% slopes, frequently flooded 15 - Colby Loam, 1-3% slopes 24 - Ft. Collins Loam, 0-3% slopes 31 - Kim Loam, 0-1% slopes 34 - Kim Loam, 5-9% slopes 85 - Water Parcel Boundary Proposed Pits A ',Pine- A /►I Iaar\Ider P'\ N A 1:6,500 11 104 56'0"W I Figure 6. NRCS Soil Map Amen Pit Weld County, CO Prepared by: psi\ j BIRCI I Ccc►�OC Birch Ecology LI.C 429 Main Street P.O. Box 170 Lyons. CO 80540 (720) 350-2530 www. birchecology.com z O C') CN t7 LEGEND NRCS Soil Data Map Units 3 - Aquolls and Aquents, Gravelly Substratum 10 - Bankard Sandy Loam, 0-3% slopes, frequently flooded 15 - Colby Loam, 1-3% slopes 24 - Ft. Collins Loam, 0-3% slopes 31 - Kim Loam, 0-1% slopes 34 - Kim Loam, 5-9% slopes 85 - Water rt t 1 ,.... . VV -:I, 1 t_ :oL:r,t/ Road :34 Wetlands Riparian Habitat Pasture Flood Gravels with weeds Proposed Pits Parcel Boundary A TT A arOi Iaa siT !1 N A 1:6,500 12 104 56'0"W I r 104"56'0"W Ifi,t t sivfttain,Q1m� ' n�,,F1 r. t'.z Figure 7. NRCS Soil Map with Vegetation Types Amen Pit Weld County, CO Prepared by: BIR ZCtI 1..... Birch Ecology LLC 429 Main Street P.O. Box 170 Lyons, CO 80540 (720) 350-2530 www. birchecology .com z O N O wcr ATTACHMENT B TABLE 1 Summary of Vegetation Types Aggregate Resource Vegetation Type Area (Acres) Pasture Grasses Ripanan Habitat Wetlands Disturbed Unvegetated Gravel Deposits 86 76 6 88 1 03 0 76 0 26 TOTAL 95 68 14 ATTACHMENT B TABLE 2 Wetlands Summary Aggregate Resource Potential Waters of the U S Wetlands Wetland A Wetland B Wetland C Wetland D Wetland E (outside project area) Wetland F Wetland G Ditch Wetland Area Location 26,500 ft2 (0 61 ac) 437 ft2 (0 01 ac) 733 ft2 (0 02 ac) 404 ft2 (0 01 ac) 844 ft2 (0 02 ac) 11,238 ft2 (0 26 -ac) 1,590 ft2 (0 04 ac) 4,148 ft2 (0 10 ac) 40 383467 - 104 944055 40 382022 -104 940798 40 379958 - 104 942156 40 379582 - 104 941 409 40 381596 -104 935249 40 378448 - 104 935616 40 380523 - 104 932294 40 380861 - 104 931667 Total Wetlands Wetlands in Proposed Mining Area 46,306 ft2 (1 06 ac) 45,049 ft2 (1 03 ac) 15 ATTACHMENT B TABLE 3 Vascular Plant Species List Aggregate Resource Scientific Name Trees E/aeognus angustifolia Populus deltoides Salix amygdaloides Shrubs Atriplex canescens Salix exigua Perennial Graminoids Agropyron cristatum Carex emoryi Carex nebrascensis Carex praegracilis Distichlis spicata Eleochans palustns Elytngia repens (Elym us) Festuca pratensis Hordeum Juba turn Juncus arcticus ssp ater (J balticus) Juncus gerarda Pascopyrum smithu Phalans arundinacea Poa cornpressa Poa pa/ustns Scirpus pungens (S amencanus) Thrnopyrum intermedium Perennial Forbs Acroptilon repens Ambrosia psilostachya Barbarea orfhoceras Cardona draba Cirsium arvense Convolvulus arvensis Lepidium latifohum Malva neglecta Med/cago /upu/Ina Plantago major Ranuncu/us cymbalana Rumex cnspus Taraxac urn officinale Common Name Russian olive Plains cottonwood Peachleaf willow Fourwing saltbush Sandbar willow Crested wheatgrass Emory sedge Nebraska sedge Clustered field sedge Saltgrass Creeping spikerush Quackgrass Meadow fescue Foxtail barley Baltic rush Saltmeadow rush Western wheatgrass Reed Canarygrass Canada bluegrass Fowl bluegrass Threesquare bulrush Intermediate wheatgrass Russian knapweed Naked spike ragweed Wintercress White top Canada thistle Field bindweed Broad leaf pepperweed Common mallow Black medic Common plantain Shore buttercup Curly dock Dandelion 16 Family Eleangnaceae Salicaceae Salicaceae Wetland Origin* Status** I+ FACU N FAC N FACW Chenopodiaceae N NL Salicaceae Poaceae Cyperaceae Cyperaceae Cyperaceae Poaceae Cyperaceae Poaceae Poaceae Poaceae Juncaceae Juncaceae Poaceae Poaceae Poaceae Poaceae Cyperaceae Poaceae Asteraceae Asteraceae Brassicaceae Brassicaceae Asteraceae Convolvulaceae Brassicaceae Malvaceae Fabaceae Plantaginaceae Ranunculaceae Polygonaceae Asteraceae N FACW I NL N OBL N OBL N FACW N FACW N OBL I+ FACU I FACU N FACW N FACW I OBL N FACU I FACW I FACU N FACW N OBL I NL I+ NL N FACU N OBL I+ NL I+ FACU I+ NL I+ FACW I NL I FACU I FAC N OBL I FAC I FACU ATTACHMENT B TABLE 3 Vascular Plant Species List Aggregate Resource Scientific Name Trfobum repens Veronica amencana Annual/Biennial Graminoids Bromus tectorum Annual/Biennial Forbs Atnplex heterosperma Bidens tnpartita Capsella bursa -pastors Carduus nutans ssp macrolepis Descurainia Sophia Dipsacus fullonum ssp sylvestns Erodium cicutanum Kochia scopara Lactuca sernola Ranunculus sceleratus Sisymbnum altissimurn Verbascum thapsus * Origin Common Name White Dutch clover American speedwell Cheatgrass Vanableseed saltbush Threelobe beggarticks Shepherd's purse Musk thistle Flixweed Teasel Crane's bill Kochia Prickly lettuce Blister buttercup Tumble mustard Great mullein N = Native I = Introduced I+ = Colorado State Noxious Weed Family Wetland Origin* Status** Fabaceae I FACU Scrophulanaceae N OBL Poaceae I+ NL Chenopodiaceae Asteraceae Brassicaceae Asteraceae Brassicaceae Dipsacaceae I NL N FACW I FACU I+ FACU I NL I+ FACU Geraniaceae I+ NL Chenopodiaceae I FACU Asteraceae I FAC Ranunculaceae I OBL Brassicaceae I FACU Scrophulanaceae I+ UPL ** Wetland Status OBL = Obligate Wetland FACW = Facultative Wetland FAC = Facultative FACU = Facultative Upland UPL = Obligate Upland NO/NL = No Status in this Region 17 ATTACHMENT B Photo 3. The Ditch Wetland is along a return flow ditch connecting the Hill & Brush Ditch to the Big Thompson River. (5/15/18). Photo 4. Mature cottonwood gallery forest south of the Hill & Brush Ditch on the Coulson parcel. (5/15/18). 20 Photo 5. View of the pastures and Big Thompson River on the Croissant Family Farm parcel. (5/15/18). Photo 8. Wetland B is a shallow seasonal aquatic site with a sparse cover of threesquare at the margins. (5/15/18). Photo 11. Young cottonwood trees colonize a gravel deposit from the 2013 flood adjacent to Wetland E. (5/15/18). Photo 12. Wetland E is located near the Big Thompson River. Pit 10 is pictured. (5/15/18). ATTACHMENT B 10.0 REFERENCES Ackerfield, J. 2015. The Flora of Colorado. BRIT Press, Ft. Worth, Texas. 818 p. Colorado Natural Heritage Program (CNHP). 2003. Field Guide to the Wetland and Riparian Plant Associations of Colorado. Colorado Natural Heritage Program, Fort Collins, Colorado. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. La Roe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish and Wildlife Service Pub. FWS/OBS-79/31, Washington, D.C., 103 p. Culver, D.R. and J.M. Lemly. 2013. Field Guide to Colorado's Wetland Plants: Identification, Ecology and Conservation. Colorado Natural Heritage Program, Fort Collins, Colorado. Harrington, H.D. 1964. Manual of the Plants of Colorado. The Swallow Press, Inc. Chicago, Illinois 60605. Kartesz, J.T. 1994a. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 1 - Checklist. Second edition. Timber Press, Inc. Portland, Oregon. 622 p. Kartesz, J.T. 1994b. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 2 - Thesaurus. Second edition. Timber Press, Inc. Portland, Oregon. 816 p. Lichvar, R.W., M. Butterwick, N.C. Melvin, and W.N. Kirchner. 2014. The National Wetland Plant List: 2014 Update of Wetland Ratings. Phytoneuron 2014-41: 1-42. NatureServe Explorer: An Online Encyclopedia of Life. http://www.natureserve.org/explorer/ Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at the following link: https://websoilsurvey.sc.egov.usda.gov/. Accessed July 22, 2018. U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) . ERDC/EL TR-10- i . U.S. Army Engineer Research and Development Center, Vicksburg MS. U.S. Army Corps of Engineers. 1987. Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, MS. USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov, 28 February 2014) . National Plant Data Team, Greensboro, NC 27401-4901 USA. 26 ATTACHMENT B University of Colorado Herbarium (COLO) Specimen Database of Colorado Vascular Plants http //cumuseum colorado edu/Research/Botany/Databases/search php Weber, W A and R C Whitmann 2012 Colorado Flora Eastern Slope, Fourth edition University Press of Colorado Boulder, Colorado Weber, WA & R C Wittmann, 1992 Catalog of the Colorado Flora a Biodiversity Baseline University Press of Colorado Niwot, Colorado Including most recent addenda available from CU Herbarium (COLO), Boulder, Colorado 27 ATTACHMENT B Appendix A. Soil Map Unit Descriptions 28 ATTACHMENT B Map Unit Description: Aquolls and Aquents. gravelly substratum- Larimer County Area, Colorado: and Weld County. Colorado. Southern Part Amen Pit Parcels Weld County, Colorado, Southern Part 3 Aquolls and Aquents, gravelly substratum Map Unit Setting National map unit symbol: 3627 Elevation: 4,000 to 7,200 feet Mean annual precipitation: 12 to 18 inches Mean annual air temperature: 45 to 55 degrees F Frost -free period: 80 to 155 days Farmland classification: Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Map Unit Composition Aquolls and similar soils: 55 percent Aquents, gravelly substratum, and similar soils: 30 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Aquolls Setting Landform: Flood plains, swales. streams Down -slope shape: Linear Across -slope shape: Linear Parent material: Recent alluvium Typical profile Hi - 0 to 48 inches: loam H2 - 48 to 60 inches: gravelly sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat) Moderately high to high (0.20 to 2.00 in/hr) Depth to water table: About 6 to 48 inches Frequency of flooding: Frequent Frequency of ponding: None Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: Moderate (about 8.0 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6w Hydrologic Soil Group. D Ecological site: Salt Meadow (R067BY035CO) i),\ Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 7/24/2018 Page 1 of 2 ATTACHMENT B Map Unit Description: Aquolls and Aquents, gravelly substratum Larimer County Area. Colorado; and Weld County. Colorado, Southern Part Amen Pit Parcels Hydric soil rating: Yes Description of Aquents, Gravelly Substratum Setting Landform: Stream terraces Down -slope shape: Linear Across -slope shape: Linear Parent material: Recent alluvium Typical profile Hi - 0 to 48 inches: variable H2 - 48 to 60 inches: very gravelly sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat) Moderately high to very high (0.57 to 19.98 in/hr) Depth to water table: About 6 to 24 inches Frequency of flooding: Frequent Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Salinity. maximum in profile: Nonsaline to moderately saline (0.0 to 8.0 mmhos/cm) Available water storage in profile: Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated): 6w Land capability classification (nonirrigated): 6w Hydrologic Soil Group: D Ecological site: Salt Meadow (R067BY035CO) Hydric soil rating: Yes Minor Components Bankard Percent of map unit: 10 percent Hydric soil rating: No Ustic torrifluvents Percent of map unit: 5 percent Hydric soil rating: No Data Source Information Soil Survey Area: Larimer County Area. Colorado Survey Area Data: Version 12, Oct 10, 2017 Soil Survey Area: Weld County. Colorado, Southern Part Survey Area Data: Version 16. Oct 10. 2017 Him Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 7/24/2018 Page 2 of 2 ATTACHMENT B Map Unit Description: Bankard sandy loam, 0 to 3 percent slopes, frequently flooded Larimer Amen Pit Parcels County Area. Colorado; and Weld County. Colorado, Southern Part Weld County, Colorado, Southern Part 10 Bankard sandy loam, 0 to 3 percent slopes, frequently flooded Map Unit Setting National map unit symbol: 2s51 n Elevation: 4,090 to 5,410 feet Mean annual precipitation: 12 to 17 inches Mean annual air temperature: 48 to 52 degrees F Frost -free period: 130 to 160 days Farmland classification: Prime farmland if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 Map Unit Composition Bankard, frequently flooded, and similar soils: 80 percent Minor components: 20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Bankard, Frequently Flooded Setting Landform. Flood plains, ephemeral streams Down -slope shape: Linear Across -slope shape: Linear Parent material: Sandy alluvium Typical profile A - 0 to 2 inches: sandy loam AC - 2 to 9 inches: sandy loam Cl - 9 to 17 inches: loamy sand C2 - 17 to 80 inches: sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat excessively drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: Frequent Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Salinity maximum in profile: Nonsaline (0.0 to 1.9 mmhos/cm) Available water storage in profile: Low (about 3.5 inches) Interpretive groups Land capability classification (irrigated): 6s Land capability classification (nonirrigated): 6s Hydrologic Soil Group: A ).\ Natural Resources Web Soil Survey al Conservation Service National Cooperative Soil Survey 7/24/2018 Page 1 of 2 ATTACHMENT B Map Unit Description: Bankard sandy loam, 0 to 3 percent slopes, frequently flooded---Larimer County Area, Colorado; and Weld County, Colorado. Southern Part Amen Pit Parcels Ecological site: Sandy Bottomland (R067BY031 CO) Hydric soil rating: No Minor Components Glenberg, rarely flooded Percent of map unit: 8 percent Landform: Flood -plain steps, ephemeral streams Down -slope shape: Linear Across -slope shape: Linear Ecological site: Sandy Bottomland (R067BY031 CO) Hydric soil rating: No Kitcarson, frequently flooded Percent of map unit: 5 percent Landform. Flood plains, ephemeral streams Down -slope shape: Linear Across -slope shape: Linear, concave Ecological site: Wet Meadow (R067BY038CO) Hydric soil rating: No Alda, frequently flooded Percent of map unit: 5 percent Landform: Flood plains Down -slope shape: Concave Across -slope shape: Concave Ecological site: Salt Meadow (R067BY035CO) Hydric soil rating: No Las animas, frequently flooded Percent of map unit: 2 percent Landform: Flood plains, ephemeral streams Down -slope shape: Linear Across -slope shape: Linear, concave Ecological site: Salt Meadow (R067BY035CO) Hydric soil rating: No Data Source Information Soil Survey Area: Larimer County Area. Colorado Survey Area Data: Version 12. Oct 10. 2017 Soil Survey Area: Weld County. Colorado, Southern Part Survey Area Data: Version 16. Oct 10. 2017 �I ►� Natural Resources Web Soil Survey all Conservation Service National Cooperative Soil Survey 7/24/2018 Page 2 of 2 ATTACHMENT C WETLAND DELINEATION REPORT Amen Aggregate Resource Weld County, Colorado prepared for: COULSON EXCAVATING CO., INC 3609 N. County Rd. 13 Loveland, CO 80538 WESTERN ECOLOGICAL RESOURCE, INC 711 WALNUT STREET, BOULDER, CO 80302 prepared by: BIRCH ECOLOGY, LLC 429 MAIN STREET, LYONS, CO 80540 ZBIRCH ECOLOGY BIRCH ECOLOGY July 2018 ATTACHMENT C TABLE OF CONTENTS Section/Title pie 1.0 INTRODUCTION 1 2.0 ENVIRONMENTAL SETTING 1 3.0 DELINEATION METHODS 2 3.1 Agency Coordination 2 4.0 WETLANDS & WATERS OF THE U .S 2 4.1 Wetland A 2 4.1.1 Location 2 4.1.2 Classification 2 4.1.3 Vegetation 2 4.1.4 Hydrology 2 4.1.5 Soils 3 4.2 Wetland B 3 4.2.1 Location 3 4.2.2 Classification 3 4.2.3 Vegetation 3 4.2.4 Hydrology 3 4.2.5 Soils 3 4.3 Wetland C 3 4.3.1 Location 3 4.3.2 Classification 3 4.3.3 Vegetation 3 4.3.4 Hydrology 3 4.3.5 Soils 3 4.4 Wetland D 3 4.4.1 Location 3 4.4.2 Classification 4 4.4.3 Vegetation 4 4.4.4 Hydrology 4 4.4.5 Soils 4 4.5 Wetland E 4 4.5.1 Location 4 4.5.2 Classification 4 4.5.3 Vegetation 4 4.5.4 Hydrology 4 4.5.5 Soils 4 4.6 Wetland F 4 4.6.1 Location 4 4.6.2 Classification 5 4.6.3 Vegetation 5 4.6.4 Hydrology 5 4.6.5 Soils 5 4.7 Wetland G 5 4.7.1 Location 5 4.7.2 Classification 5 ATTACHMENT C 4 7 3 Vegetation 4 7 4 Hydrology 475 Soils 4 8 Ditch Wetland 4 8 1 Location 4 8 2 Classification 4 8 3 Vegetation 4 8 4 Hydrology 4 8 5 Soils 5 0 ANALYSIS OF JURISDICTIONAL STATUS 6 0 FIGURES 7 0 TABLES 8 0 PHOTOS 9 0 REFERENCES Appendix A Field Data Forms 5 5 5 6 6 6 6 6 6 6 7 12 16 25 27 ATTACHMENT C LIST OF FIGURES Number/Title Pie Figure 1. Project Location Map. 8 Figure 2. Aerial Photo 9 Figure 3. Wetland Map 10 Figure 4. NRCS Soil Map. 11 LIST OF TABLES Number/Title Page Table 1. Waters of the U.S. Summary 13 Table 2. Vascular Plant Species List 14 LIST OF PHOTOS Number/Title Page Photo 1. Cobbles deposited along the Big Thompson River by the 2013 floods. (5/15/18). 17 Photo 2. Pooled water from recent heavy rains in the Hill & Brush Ditch. (5/15/18) . 17 Photo 3. The Ditch Wetland flows into the Big Thompson River. (5/15/18) 18 Photo 4. Mature cottonwood gallery forest along the Big Thompson River. (5/15/18)18 Photo 5. View of the pastures and river on the Croissant Farms parcel. (5/15/18) . 19 Photo 6. Wetland A with shallow standing water in the south end. (5/15/18)19 Photo 7. Mature plains cottonwood trees adjacent to Wetland A. (5/15/18). 20 Photo 8. Wetland B is a shallow seasonal aquatic site. (5/15/18). 20 Photo 9. Wetland C and Soil Pit 7. (5/15/18) 21 Photo 10. Wetland D and Soil Pit 6. (5/15/18). 21 Photo 11. Cottonwood trees colonize a gravel deposit from the 2013 flood. (5/15/18) . 22 Photo 12. Wetland E is located near the Big Thompson River. Pit 10 is pictured. (5/15/18).22 Photo 13. Wetland F is in a swale with Nebraska sedge in the wettest areas. (5/15/18)23 Photo 14. Wetland G is just west of the Ditch Wetland. Pit 4 is pictured. (5/15/18) . 23 Photo 15. Pit 5 is in an upland area of the swale west of Wetland G. (5/15/18) . 24 Photo 16. Pit 3 is on the bank next to the Ditch Wetland. (5/15/18) . 24 ATTACHMENT C 1.0 INTRODUCTION Coulson Excavating Company is developing plans to construct a sand and gravel pit known as the Amen Aggregate Resource on two parcels located northeast of the intersection of Weld County Roads 54 and 13. The project site is located southeast of Johnstown, along the Big Thompson River in Section 19 of Township 5 North and Range 76 in Weld County, Colorado (Figure 1). The western parcel owned by Coulson Excavating measures approximately 117.6 acres and the eastern parcel owned by Croissant Family Farm measures 69.5 acres. To aid in project planning for the special use review, wetlands were delineated within seven proposed mining areas that cover a combined 95.7 acres (Figure 2). This report describes the wetlands identified within the mining areas of the proposed Amen Aggregate Resource in terms of their vegetation, soil, and hydrology, and their locations are illustrated by the Wetland Map (Figure 3) . Please note, all Figures are included in Section 6.0, Tables are in Section 7.0, and Photos are in Section 8.0. Appendix A contains copies of the field data forms completed during the wetland delineation. 2.0 ENVIRONMENTAL SETTING As described above, the wetland delineation was conducted for seven proposed mining areas at the Amen Aggregate Resource that cover a total of 95.7 acres. These mining areas are located on the historic floodplain of the Big Thompson River on both the left and right sides. The 2013 flood event impacted the Big Thompson River through the project site, leaving large cobble and sand deposits along the river corridor which are visible on the aerial photograph (Photo 1; Figure 2) . As shown by the wetland map (Figure 3), several oxbow wetlands were identified on the historic floodplain of the river within the proposed mining areas. The project site has had an agricultural land use history. The pastures south and east of the Big Thompson River are grazed by cattle, but the areas on the north side did not show evidence of recent grazing. The Hill and Brush Ditch, a diversion from the Big Thompson River, is located just north of the proposed mining areas (Photo 2). A wetland -lined lateral ditch was flowing south from the Hill and Brush Ditch through the proposed mining area to the Big Thompson River at the time of the delineation (Photo 3) . The water appeared to be the result of recent heavy rainfall in the area that had collected in the Hill & Brush ditch, since it was not flowing at the time and only had pooled water in the area of the diversion structure. Smaller irrigation laterals east of the return flow ditch were in disrepair and appear to have been abandoned. There are two active oil and gas wells on the Croissant Family Farm Parcel, and two unused oil and gas wells and a plugged and abandoned oil well are located on the Coulson Parcel (Figure 2). Mature cottonwood gallery forest lines the Big Thompson River and the western portion of the Hill and Brush Ditch on the Coulson parcel (Photo 4) . However, there are few trees on the eastern Croissant Family Farm parcel. The pasture areas are dominated by introduced grasses and weeds (Photo 5). 1 ATTACHMENT C 3.0 DELINEATION METHODS Wetlands were delineated by Heather Houston of Birch Ecology, LLC and formerly of Western Ecological Resource, Inc. and David Buscher of Buscher Soil & Environmental Consulting, Inc. in accordance with the U.S. Army Corps of Engineers Wetland Delineation Manual (1987) and the Regional Supplement for the Great Plains Region (2010) on May 15, 2018. In general, wetland boundaries were delineated and flagged based upon the prevalence of hydrophytic vegetation, hydric soils and indicators of a wetland hydrology. Field forms for the 11 test pits with vegetation, soil and hydrology data are included in Appendix A. These test pits are located in both wetland and upland habitats. In general, plant species names follow Weber and Whitmann (1992) . The wetland status of plants follows the 2016 National List for the Great Plains Region. Classification of wetlands follows Cowardin et al. (1979) . Wetland flagging was located with a survey -grade GPS by Peter Wayland of Weiland, Inc. of Boulder, Colorado. 3.1 Agency Coordination The U.S. Army Corps of Engineers (Corps) has not visited the project site to review the flagged wetland boundary. 4.0 WETLANDS & WATERS OF THE U.S. Approximately 46,306 square feet (1.06 acre) of wetlands were mapped in the project area, as illustrated by the Wetland Map (Figure 3) and summarized in Table 1. 4.1 Wetland A 4.1.1 Location Wetland A is located in a slough just north of the Big Thompson River and just east of Weld County Road 13 (Photos 6 & 7). This swale is a historic channel of the Big Thompson River. Wetland A measures approximately 26,500 square feet (0.61 acre) . 4.1.2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al., 1979), Wetland A is in the Palustrine System, with Emergent Persistent Class. 4.1.3 Vegetation Wetland A is dominated by threesquare bulrush (Scirpus pungens) in the shallow water and saturated soil habitats, growing with Emory sedge (Carex emoryi), saltgrass (Distichlis spicata), foxtail barley (Hordeum jubatum) saltmeadow rush (Juncus gerardii) and variableseed saltbush (Atriplex heterosperma) . In the drier soils near the margin, the noxious weeds quackgrass (Elytrigia repens), broadleaf pepperweed (Lepidium latifolium) and Canada thistle (Cirsium arvense) are also present. Large, mature plains cottonwood (Populus deltoideis) trees border the sides of the slough (Photo 7) . Table 2 lists the vascular plant species identified on the Amen Gravel Pit project site during the wetland delineation in May 2018. 4.1.4 Hydrology Wetland A is a slough with seasonally saturated soil supported by high groundwater. Shallow standing water was present at the time of the delineation after a period of heavy rains, but is likely present in most years (Photos 6 & 7). 2 ATTACHMENT C 4 1 5 Soils Soil Pit 11 was dug on a higher area, likely an old point bar within the slough, and contained hydnc soil with a redox dark surface (Indicator F6) and oxidized rhizospheres on living roots 4 2 Wetland B 4 2 1 Location Wetland B is a small seasonal aquatic site that measures 437 square feet (0 01 acre) (Photo 8) 4 2 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland B is in the Palustnne System, Emergent Persistent Class 4 2 3 Vegetation Wetland B is a seasonal aquatic site with a sparse cover of threesquare bulrush at the perimeter The overstory is a mature cottonwood gallery forest 4 2 4 Hydrology Wetland B is a depression that is seasonally saturated to inundated by the shallow groundwater table 4 2 5 Soils The presence of hydnc soils was assumed in this seasonal aquatic site 4 3 Wetland C 4 3 1 Location Wetland C is located in a shallow swale on the south side of the Big Thompson River Wetland C measures approximately 733 square feet (0 02 acre) (Photo 9) 4 3 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland C is in the Palustnne System, Emergent Persistent Wetland Class 4 3 3 Vegetation Wetland C is dominated by saltmeadow rush growing with quackgrass 4 3 4 Hydrology This depression is part of an old secondary channel of the Big Thompson River and it interacts with the seasonally high groundwater of the alluvial aquifer 4 3 5 Sods Soil Pit 7 was dug within Wetland C and contained hydnc soil with a redox dark surface (F6) and oxidized rhizospheres on living roots (Photo 9) 4 4 Wetland D 4 4 1 Location Wetland D is located southeast of Wetland C in a swale that is an abandoned river channel Wetland D measures approximately 404 square feet (0 01 acre) (Photo 10) 3 ATTACHMENT C 4 4 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland D is in the Palustnne System, Emergent Persistent Wetland Class 4 4 3 Vegetation Wetland D is dominated by a sparse cover of threesquare bulrush and a small amount of saltmeadow rush, saltgrass, and curly dock (Rumex crispus) Intermediate wheatgrass (Thinopyrum intermedium) and the noxious weed Canada thistle are common at the margins 4 4 4 Hydrology Wetland D is a depression with clay -rich soil that contained standing water due to recent heavy rains In addition, it interacts with the seasonally high groundwater table associated with the alluvial aquifer of the Big Thompson River 445 Soils Pit 6 was dug within Wetland D in an area with 2 inches of surface water at the time of the delineation The hydnc soil had a redox dark surface (F6) with oxidized rhizospheres on living roots (Photo 10) 4 5 Wetland E 4 5 1 Location Wetland E is located near the Big Thompson River on an overbank deposit from the 2013 flood (Photo 11) Wetland E measures approximately 844 square feet (0 02 acre) (Photo 12) 4 5 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland E is in the Palustnne System, Emergent Persistent Wetland Class 4 5 3 Vegetation Wetland E has an overstory of plains cottonwood and peachleaf willow (Salix amygdaloides) trees with a few sandbar willows (Salix exigua) in the shrub layer The understory is dominated by reed canarygrass (Pha/ans arundinacea) growing with meadow fescue (Festuca pratensis), Emory sedge, curly dock, teasel (Dipsacu fullonum), American yellowrocket (Barbarea orthocereas), and cheatgrass (Bromus tectorum) 4 5 4 Hydrology Wetland E is adjacent to the Big Thompson River and is influenced by the seasonally high groundwater associated with the river 4 5 5 Soils Pit 10 was dug in a stand of reed canarygrass on the low terrace near the river The hydnc soil had a redox dark surface (F6) and oxidized rhizospheres on living roots 4 6 Wetland F 4 6 1 Location Wetland F is located in the south-central portion of the project site in a slough that is an abandoned channel of the Big Thompson River (Photo 13) Wetland F measures approximately 11,238 square feet (0 26 acre) 4 ATTACHMENT C 4 6 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland F is in the Palustnne System, Emergent Persistent Class 4 6 3 Vegetation Wetland F is dominated by Nebraska sedge (Carex nebrascensis) in the wettest areas, with saltmeadow rush, saltgrass, Baltic rush (Juncus arcticus ssp otter), and clustered field sedge (Carex praegracihs) in the drier areas Other common species at the margins include quackgrass, teasel, intermediate wheatgrass, and prickly lettuce (Lactuca semola) 4 6 4 Hydrology This slough is seasonally saturated by the high groundwater table associated with the alluvial aquifer of the Big Thompson River There was shallow standing water at the time of the delineation due to recent heavy rains 4 6 5 Soils Pit 9 was used to define the upland limits of Wetland F This pit was dug in a drier part of the slough that lacked hydrophytic vegetation, in an area dominated by quackgrass and intermediate wheatgrass However, the soil was hydnc, with a redox dark surface (F6) and oxidized rhizospheres on living roots 4 7 Wetland G 4 7 1 Location Wetland G is located in a poorly -defined swale lust west of the Ditch Wetland Wetland G measures 1,590 square feet (0 04 acre) (Photo 14) 4 7 2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al , 1979), Wetland G is in the Palustnne System, Emergent Persistent Class 4 7 3 Vegetation Wetland G is dominated by reed canarygrass, and was heavily grazed at the time of the delineation Other common species include quackgrass, fowl bluegrass (Poa palustns), meadow fescue, Canada thistle, and intermediate wheatgrass 4 7 4 Hydrology The swale containing Wetland G appears to be an old, abandoned river channel that is influenced by the seasonally high groundwater table near the river 4 7 5 Soils Pits 4 and 5 were used to define the limits of Wetland G Pit 4 is inside the wetland boundary and had hydnc soil with a redox dark surface (F6) and oxidized rhizospheres on living roots (Photo 14) Pit 5 also had hydnc soil, but was not dominated by hydrophytes and is outside the wetland boundary (Photo 15) 5 ATTACHMENT C 4.8 Ditch Wetland 4.8.1 Location The Ditch Wetland is located along an irrigation return flow ditch that conveys water from the Hill & Brush Ditch south through the project site to the Big Thompson River. This linear wetland measures approximately 4,148 square feet (0.10 acre) (Photo 3) . 4.8.2 Classification Under the Cowardin Classification System for Wetlands and Deepwater Habitats (Cowardin et al., 1979), the Ditch Wetland is in the Palustrine System, Emergent Persistent Class. 4.8.3 Vegetation The Ditch Wetland is lined by areas of reed canarygrass, with a small amount of threesquare bulrush and the forbs blister buttercup (Ranunculus sceleratus) and threelobe beggarstick (Bidens tripartite). Meadow fescue and intermediate wheatgrass occur along the margins. The aquatic forb American speedwell (Veronica americana) grows in the shallow water of the ditch. 4.8.4 Hydrology Water flowing from the Hill and Brush Ditch to the Big Thompson River creates saturated soil conditions for wetland development along the ditch banks. At the time of the delineation, the Hill and Brush Ditch had pooled water from recent heavy rains that was spilling over into the Ditch Wetland and flowing south to the Big Thompson River. 4.8.5 Soils Pit 3 was dug on the bank adjacent to the Ditch Wetland, in an area dominated by intermediate wheatgrass and quackgrass with a lower cover of reed canarygrass (Photo 16). The soil was not hydric and there were no indicators of a wetland hydrology in this area adjacent to the ditch. 5.0 ANALYSIS OF JURISDICTIONAL STATUS All of the wetlands described in this report have a potential hydrologic connection to the Big Thompson River, a Water of the U.S. These wetlands are potentially jurisdictional and could be impacted by the proposed mining operation. Therefore Coulson Excavating Company requests an Approved Jurisdictional Determination. 6 ATTACHMgncW N 0 O N 0 O i7' COLORADO 104°57'0"W I Big Thompson River 104°56'0"W Coulson Parcel 104°57'0"W BASE: USGS 7.5' Johnstown Quadrangle, Colorado Map Location N A 1:24,000 8 104°55'0"W I Weld County Rd. 54 104°55'0"W Figure 1. Project Location Map Amen Pit Prepared by: f BIRCI I ECOLOGY Birch Ecology LLC 429 Main Street P.O. Box 1 70 Lyons, CO 80540 (720) 350-2530 www. bircnecology.com 0 O N O A .. ' e :.III .�� ;��.*' Coulson Parcel II I Ill . 14D14.. -Ise A + emnimonsineannisinempaninneneassontemanne ========= oaf tan ma l *.ik•40, , ,t.,0, Se lE-->Ai‘. rual (441.4 1,?‘11 &MEL Tv 104 56'0"W LEGEND NRCS Soil Data Map Units 3 - Aquolls and Aquents, Gravelly Substratum 10 - Bankard Sandy Loam, 0-3% slopes, frequently flooded 15 - Colby Loam, 1-3% slopes 24 - Ft. Collins Loam, 0-3% slopes 31 - Kim Loam, 0-1% slopes 34 - Kim Loam, 5-9% slopes 85 - Water a Parcel Boundary Proposed Pits ATTACHMENT C N A 1:6,500 11 1'4560W Figure 4. NRCS Soil Map Amen Pit Weld County, CO Prepared by: Btt_tt Lc.It.cx:t Birch Ecology LLC 429 Main Street P.O. Box 170 Lyons. CO 80540 (720) 35C-2530 www. birchecology.com ATTACHMENT C TABLE 1 Potential Waters of the U.S. Summary Amen Pit Potential Waters of the U S Area Location Wetlands Wetland A Wetland B Wetland C Wetland D Wetland E Wetland F Wetland G Ditch Wetland 26,500 ft2 (0 61 ac) 437 ft2 (0 01 ac) 733 ft2 (0 02 ac) 404 ft2 (0 01 ac) 844 ft2 (0 02 ac) 11,238 ft2 (0 26 ac) 1,590 ft2 (0 04 ac) 4,148 ft2 (0 10 ac) 40 383467 - 104 944055 40 382022 -104 940798 40 379958 - 104 942156 40 379582 - 104 941 409 40 381596 - 104 935249 40 378448 - 104 935616 40 380523 - 104 932294 40 380861 - 104 931667 Total Wetlands 46,306 ff2 (1 06 ac) 13 ATTACHMENT C TABLE 2 Vascular Plant Species List Amen Pit Scientific Name Trees Elaeagnus angustifolia Populus deltoides Salix amygdaloides Shrubs Atriplex canescens Salix exigua Perennial Graminoids Agropyron cristaturn Carex emory Carex nebrascensis Carex praegracdis Distichlis spicata Eleocharis palustns Elytrigia repens (Elym us) Festuca pratensis Horde um jubatum Juncus arcticus ssp ater (J balticus) Juncus gerardii Pascopyrum smith! Pha/ans arundinacea Poa compresses Poa palustris Scirpus pungens (S americanus) Thmopyrum intermedium Perennial Forbs Acroptilon repens Ambrosia psilostachya Barbarea orthoceras Cardona draba Cirsium arvense Convolvulus arvensis Lepidium latrfolium Malva neglecta Medicago lupulina Plantago major Ranunculus cymbalana Rumex cnspus Taraxacum officinale Common Name Russian olive Plains cottonwood Peachleaf willow Fourwing saltbush Sandbar willow Crested wheatgrass Emory sedge Nebraska sedge Clustered field sedge Saltgrass Creeping spikerush Quackgrass Meadow fescue Foxtail barley Baltic rush Saltmeadow rush Western wheatgrass Reed Canarygrass Canada bluegrass Fowl bluegrass Threesquare bulrush Intermediate wheatgrass Russian knapweed Naked spike ragweed Wintercress White top Canada thistle Field bindweed Broad leaf peppergrass Common mallow Black medic Common plantain Shore buttercup Curly dock Dandelion 14 Family Eleangnaceae Salicaceae Salicaceae Wetland Origin* Status** I+ FACU N FAC N FACW Chenopodiaceae N NL Salicaceae Poaceae Cyperaceae Cyperaceae Cyperaceae Poaceae Cyperaceae Poaceae Poaceae Poaceae Juncaceae Juncaceae Poaceae Poaceae Poaceae Poaceae Cyperaceae Poaceae Asteraceae Asteraceae Brassicaceae Brassicaceae Asteraceae Convolvulaceae Brassicaceae Malvaceae Fabaceae Plantaginaceae Ranunculaceae Polygonaceae Asteraceae N FACW I NL N OBL N OBL N FACW N FACW N OBL I+ FACU I FACU N FACW N FACW I OBL N FACU I FACW I FACU N FACW N OBL I NL I+ NL N FACU N OBL I+ NL I+ FACU I+ NL I+ FACW I NL I FACU I FAC N OBL I FAC I FACU ATTACHMENT C TABLE 2 Vascular Plant Species List Amen Pit Scientific Name Tnfolium repens Veronica amencana Annual/Biennial Graminoids Bromus tectorum Annual/Biennial Forbs Atnplex heterosperma Capsella bursa-pastons Carduus nutans ssp macrolepis Descuramia sophia Dipsacus fullonum ssp sylvestrrs Erodium cicutanum Kochia scopana Lactuca sernola Ranunculus sceleratus Sisymbnum altissimurn Verbascurn thapsus * Origin Common Name White Dutch clover American speedwell Cheatgrass Vanableseed saltbush Shepherd's purse Musk thistle Flixweed Teasel Crane's bill Kochia Prickly lettuce Blister buttercup Tumble mustard Great mullein N = Native I = Introduced I+ = Colorado State Noxious Weed Family. Wetland Origin* Status** Fabaceae I FACU Scrophulanaceae N OBL Poaceae I+ NL Chenopodiaceae Brassicaceae Asteraceae Brassicaceae Dipsacaceae I NL I FACU I+ FACU I NL I+ FACU Geraniaceae I+ NL Chenopodiaceae I FACU Asteraceae I FAC Ranunculaceae I OBL Brassicaceae I FACU Scrophulanaceae I+ UPL ** Wetland Status OBL = Obligate Wetland FACW = Facultative Wetland FAC = Facultative FACU = Facultative Upland UPL = Obligate Upland NO/NL = No Status in this Region 15 44A 1 %/m `a•`>K ' L •apry, it "�'` ATTACHMENT C .. ate Ale, �_ �. i r t * . • • A . a 1 t Yii "`n... sa—C • - ;Adel tins* aselai WO • • Photo 3. The Ditch Wetland is along a return flow ditch connecting the Hill & Brush Ditch to the Big Thompson River. (5/15/18). Photo 4. Mature cottonwood gallery forest along the Big Thompson River on the Coulson parcel. (5/15/18). 18 Photo 5. View of the pastures and Big Thompson River on the Croissant Family Farm parcel. (5/15/18). ..a. Photo 8. Wetland B is a shallow seasonal aquatic site with a sparse cover of threesquare at the margins. (5/15/18). Photo 11. Young cottonwood trees colonize a gravel deposit from the 2013 flood adjacent to Wetland E. (5/15/18). Photo 12. Wetland E is located near the Big Thompson River. Pit 10 is pictured. (5/15/18). Photo 16. Pit 3 is on the bank next to the Ditch Wetland, but is outside the wetland boundary. (5/15/18). ATTACHMENT C 9.0 REFERENCES Ackerfield, J. 2015. The Flora of Colorado. BRIT Press, Ft. Worth, Texas. 818 p. Colorado Natural Heritage Program (CNHP) . 2003. Field Guide to the Wetland and Riparian Plant Associations of Colorado. Colorado Natural Heritage Program, Fort Collins, Colorado. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. La Roe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish and Wildlife Service Pub. FWS/OBS- 79/31, Washington, D.C., 103 p. Culver, D.R. and J.M. Lemly. 2013. Field Guide to Colorado's Wetland Plants: Identification, Ecology and Conservation. Colorado Natural Heritage Program, Fort Collins, Colorado. Harrington, H.D. 1964. Manual of the Plants of Colorado. The Swallow Press, Inc. Chicago, Illinois 60605. Kartesz, J.T. 1994a. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 1 - Checklist. Second edition. Timber Press, Inc. Portland, Oregon. 622 p. Kartesz, J.T. 1994b. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 2 - Thesaurus. Second edition. Timber Press, Inc. Portland, Oregon. 816 p. Lichvar, R.W., M. Butterwick, N.C. Melvin, and W.N. Kirchner. 2014. The National Wetland Plant List: 2014 Update of Wetland Ratings. Phytoneuron 2014-41: 1-42. NatureServe Explorer: An Online Encyclopedia of Life. http://www.natureserve.org/explorer/ Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at the following link: https://websoilsurvey.sc.egov.usda.gov/. Accessed July 22, 2018. U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) . ERDC/EL TR-10-1. U.S. Army Engineer Research and Development Center, Vicksburg MS. U.S. Army Corps of Engineers. 1987. Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, MS. USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov, 28 February 2014). National Plant Data Team, Greensboro, NC 27401-4901 USA. 25 ATTACHMENT C University of Colorado Herbarium (COLO) Specimen Database of Colorado Vascular Plants http //cumuseum colorado edu/Research/Botany/Databases/search php Weber, W A and R C Whitmann 2012 Colorado Flora Eastern Slope, Fourth edition University Press of Colorado Boulder, Colorado Weber, WA & R C Wittmann, 1992 Catalog of the Colorado Flora a Biodiversity Baseline University Press of Colorado Niwot, Colorado Including most recent addenda available from CU Herbarium (COLO), Boulder, Colorado 26 ATTACHMENT C Appendix A. Field Data Forms ATTACHMENT C WETLAND DETERMINATION DATA FORM - Great Plains Region Project/Site: meo 6 van ( Pi+ Applicant/Owner: 10t. (SO" 7ccaQ1 it/t State: Sampling Point: P1 Investigator(s): WoUSO'%A4 ucc Section, Township. Range: L'PC g. 174A/i? 0,7 P/ Landform hilislo e terrace, etc.): i��' �` ` • ' v ' �"� ( p # ; �_ ! focal relief (concave; convex, none): Slope (%): Subregion (LRR): A Soil Map Unit Name: City/County: Lat: A r,�PP4t1 c r; rinvely L ` Are climatic / hydrologic conditions on the site typi l for this time of year? Yes .•C No (If no, explain in Remarks.) LAJC,Irf r Sampling Date: -3 1 ! ;% Long: Datum: - Are Vegetation , Soil Are Vegetation , Soil , or Hydrology or Hydrology NWI classification: • significantly disturbed? Are "Normal Circumstances" present? Yes, No naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Hydric Soil Present? Yes No Wetland Hydrology Present? Yes 7� No Is the Sampled Area within a Wetland? Yes No Remarks: w�p iqq-s050S-17-5 H&tvi( vatect pwait Pit ,,4*,% law f�� Hq, ggve, PooIee1*4M)tcv fl-ftrOvirmettt:4M- ;(011:4,1S, tiert 10 c CultieviS VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 1. 2. 3. 4. Sapling/Shrub Stratum (Plot size: 1. a! 2. /� 4 ) 3. 4. 5. e , .•, Herb Stratum (Plot size: ` L A. ' ! 1.&-1rc,c ,dirt)47k f^APi/;i' P f .� .- Q x' 0 1 um Offitiy;Pieee 3. q e. li R loursct loaciwiS 4. LoVdPuLoctiuvv\ 5. Jupirus verAfavoi - 6.V UVftedX Cvic3 U5 ityc " 5 8.PIa 50 Mt� ic) 9. 2. Absolute Dominant Indicator % Cover Species? Status = Total Cover = Total Cover / 4 10. Woody Vine Stratum (Plot size: 1. 2. ) cio Bare Ground in Herb Stratum $ &4CvJ = Total Cover = Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC-): (A) Total Number of Dominant Species Across All Strata: (B) Percent of Dominant Species That Are OBL, FACW, or FAC: (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species x 1 = FACW species x 2 = FAC species x 3 = FACU species x 4 = UPL species x 5 = Column Totals: (A) (B) Prevalence Index = B/A = Hydrophytic Vegetation Indicators: >c1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No Remarks: US Army Corps of Engineers Great Plains — Version 2.0 ATTACHMENT C SOIL ,-, Si 548 Sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absenee of indicators.) Depth Matrix (inches) Color (moist) % Color (moist) % Typel 1-3 ipygzji (rev 3 spi fr422i2 Redox Features Texture Remarks S • arredoPIPPS" 454rSal 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining. M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (Al 1) Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (TF2) Very Shallow Dark Surface (TF12) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes No Remarks: s hadow s- tc," nce,t _ HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes V No r Depth (inches): Water Table Present? Yes No I/ ,Depth (inches): Saturation Present? Yes No V Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (53) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) d v\ -trate, ' e_ ct e f re Secondary Indicators (minimum of two required) Salt Crust (B11) Surface Soil Cracks (B6) Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) _ Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) Oxidized Rhizospheres on Living Roots (C3) (where tilled) (where not tilled) Crayfish Burrows (C8) Presence of Reduced Iron (C4) aturation Visible on Aerial Imagery (C9) Thin Muck Surface (C7) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) • Wetland Hydrology Present? Yes Remarks: 7 ice - G./lj!✓• • piencrde/ (..terr-tf10 ter. till P' No US Army Corps of Engineers Great Plains — Version 2.0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site A n Pvl G ra iC I it City/County Applicant/Owner Investigator(s) I'(0, Si L Section, Township, Range Landform (hillslope, terrace, etc ) I t°�l%C(�(Q/ U (0.1471A Kc a vot-(r'Vt� � CAA + g U Scit4 , Subregion (LRR) Soil Map Unit Name Lat Long Local rel`(concave onvex, none) Slope (%) Datum ��++�� Sampling Date 5I/ / r 5r State C C) Sampling Point p, z 'Cre0.G7 Ll1 j4(1 EP ( t') / 1 Jeh t S -' Q 5 "Cf I/P 11/ : rd `e f 7rAimol classification pp/ l Are climatic / hydrologic conditiori� on the site typical for this time of year'? Yes -' No (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed'? Are "Normal Circumstances" present? Yes '-No Are Vegetation . Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes / No Hydric Soil Present'? Yes No Wetland Hydrology Present'? Yes No Is the Sampled Area within a Wetland? Yes No Remarks Z P ' wHIS o;05911.3 ' I In SiA0111 C 'p�°f� ,1O t1 107 99R$ UC(iVQ-- gLjgr 1c VEGETATION — Use scientific names of plants Absolute Dominant Indicator Tree Stratum (Plot size ) % Cover Species'? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC-) (A) 1 2 3 Total Number of Dominant Species Across AU Strata (B) 4 Sapling/Shrub Stratum = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC (NB) (Plot size ) 1 2 Prevalence Index worksheet Total % Cover ofMultiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = Herb Stratum (Plot = Total Cover f {n,I FACU species x 4= p size I I ) 1 CIAN/ rS pOf I,,I ^,-Iv'r j Z5 n l/1S(_ UPLspecies x5= fIPt ,,�/ 2 V 41 ( (. S R(o l ri f a ( I O / V O('")(___. Column Totals (A) (B) 3 or* OM t t)(e)0t N"` ' J Prevalence Index = B/A = (ti / 4 ,✓,i(C1(>1 ( (nM e / C U"ftil✓ , , A , r 5 p I fA SA -(ca o C3 IMO , to/v— rj 1:-.7 4. c, HY�rophytIc Vegetation Indicators 1_ Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3 0' _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6I 1,...t° i OA ^dp Vic' ) b n A - I ) 07 �G/ty/ Sp- ( ‘2 8 J g 10 = Total Cover Woody Vine Stratum (Plot size ) 1 2 Hydrophytic Vegetation Present? Yes No % Bare Ground in Herb = Total Cover S Stratum Remarks t`L€tht f jVlZ't1` tusk (s r. >r t,, _00 L7 i l --ti-ii r1 !'f dJ l �i 46V re L e. ,,atu _� cvi -t j , F iiii Siri, US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL /AZ / Profile Description (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 O -6 /v'K z/? /0 --- -- --- --/ C L 64-- 1 PP2 Z/2, l SID �- d _ L c. '`e (14 s '') /ALEIt/ �av _ L _ 7', �' 'Type C=Concentration, D=Depletion RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matrix Hydric Soil Indicators (Applicable to all LRRs, unless otherwise noted ) _ Histosol (Al) _ Sandy Gleyed Matrix (S4) Histic Epipedon (A2) Sandy Redox (S5) Black Histic (A3) _ Stripped Matrix (S6) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) _ Depleted Below Dark Surface (A11) _ Redox Dark Surface (F6) _ Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils' _ 1 cm Muck (A9) (LRR I, J) _ Coast Praine Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) _ High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) _ Other (Explain in Remarks) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Layer (if present) Type Hydric Soil Present? Yes No (/ Depth (inches) Remarks 7/8 Sampling Point HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) _ Salt Crust (B11) _ Surface Soil Cracks (B6) High Water Table (A2) _ Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) Water Marks (BI) _ Dry -Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) _ Oxidized Rhizospheres on Living Roots (C3) (where tilled) Dnft Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) Saturation Visible on Aerial Imagery (C9) _ Iron Deposits (B5) _ Thin Muck Surface (C7) 1/�Geomorphic Position (D2) _ Inundation Visible on Aenal Imagery (B7) _ Other (Explain in Remarks) 1 -4 -AC -Neutral Test (D5) _ Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations ,/ Surface Water Present? Yes No Y Depth (inches) Wetland Hydrology Present? Yes No Water Table Present? Yes No Depth (inches) Saturation Present'? Yes No 1f/Depth (inches) (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available e Remarks It-i, _c 1,0 ..0 e '7_c�%'' ' i s .i. p�r1G e `` ( �e^ � fl, 4 P i' ( C- t> i , a { Py "I r' i L. t -F , ,'� ^ A , i f+L US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site A t on em c6 V'Cke, 1/ l ft 4 City/County Applicant/Owner �-O(JIS()V\ E (�I' VOI7rA Investigator(s) ((J\)54-('X/'� 4- Socr,A 0d Section, Township, Range Landform (hillslope, terrace, etc ) /1/eX`i AO Orri C. -17-k Local relief (concave convex, one) Slope (%) Subregion (LRR) 5 LaL ,� �v /` f Long Datum Soil Map Unit Name —Aiflf()(Ir c4AQ e/VH -- t ) Y In UP el/ 7r NWI classification Are climatic / hydrologic condition on the site typical for this time of year? Yes ![X/ No (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. lik/ I r/I Sampling Date 5fic/1 State fa_ Sampling Point Pi i c4 I q Ts'V R-6714) Hydrophytic Vegetation Presents Yes No X Hydnc Soil Presents Yes No Wetland Hydrology Present'? Yes No Is the Sampled Area within a Wetland? Yes No ,x/ Remarks \AIP (NI -' 05oS770 /I cv - lcwiS Gir(CS— jilt cct* 1-t(47OOO 11l v'kC, ,r;, Geo\ t g' l2fQ f j} r y i n Ct Imo( v i 4 "i s' eel zeol�r C VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree S tum (Plot size ) % Cover Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC-) (A) S 1 Al/171 2 3 Total Number of Dominant Species Across All Strata I (B) 4 = Total Cover Percent of Dominant Species �} That Are OBL, FACW, or FAC l./ (NB) Sapling/Shrub Stratum (Plot size ) 4 / / / 2 / / Prevalence Index worksheet Total % Cover of Multiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = r, = Total Cover FACU species x 4 = Herb Stratum (Plot size I t/ x tO ) n q, 1 I A I V'Q) V I V\4f VVI 9// Iivy d 41 r u L^ UPL species x 5= X31 2 F I +l/ri In 1 C " I% e j) ( I S I -r (') { cC'() Column Totals (A) (B) 3 a JC, AA 0 RI; e imp_ Z- F Prevalence Index = B/A = / 4 (/1(t(Q I/ I 's C( rIAA Of f', A01-(-: }�/U ( (A7 . 5 001 CO/vli f e AlZHydrophytic Vegetation Indicators _ 1- Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% _ 3 - Prevalence Index is 53 0' _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic p 6 f 5-1 f ) ("N n y 0,j-} S / 3 5 A/ 4G 7 Y 8 9 10 = Total Cover Woody Vine Stratum (Plot size ) 1 2 Hydrophytic Vegetation No = Total Cover Bare Ground in Herb Stratum 5 Present? Yes % Remarks Nom\ 4O I .1.-e,voi I drfcv -\Lp +- cOV\ Ku/is H 1 I I+ gvUsk^ v (-lc_ 1,-,.. `(G' Is io 1t,1Ot,+Ato SC' y t;orps or tngineers Great Plains - Version 2 0 ATTACHMENT C SO L 4ki (mil , e i' t -/ Profile Description (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Lac' 7) —15 l � Yl_. -i - !r -9 --. - __- ----- ..-- ,( - 'Type C=Concentration, D=Depletion, RM=Reduced Matnx, CS=Covered or Coated Sand Grains 'Location PL=Pore Lining, M=Matnx Hydric Soil Indicators (Applicable to all LRRs, unless otherwise noted ) Histosol (A1) Sandy Gleyed Matnx (S4) Histic Epipedon (A2) _ Sandy Redox (S5) Black Histic (A3) _ Stnpped Matnx (S6) _ Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) _ Depleted Below Dark Surface (A11) _ Redox Dark Surface (F6) Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) Redox Depressions (F8) 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3 _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) _ High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) Other (Explain in Remarks) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Layer (if present) Type � Hydric Soil Present? Yes No! / Depth (inches) __ Remarks f /�4k¢ /4,d 4! /L� 11� f J 1 l 'iL .I J V(�L,S ii+ ' f'V V / F -, b , i f J ,// Sampling Point HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) Surface Water (Al) _ Salt Crust (B11) _ Surface Soil Cracks (B6) _ High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (B8) Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) Water Marks (B1) _ Dry -Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) _ Oxidized Rhizospheres on Living Roots (C3) (where tilled) _ Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) _ Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) _ FAC-Neutral Test (D5) , Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present? Yes No Depth (inches) Wetland Hydrology Present? Yes No i..././ Water Table Present? Yes No epth (inches) Saturation Present? Yes No Depth (inches) (includes capillary fringe) Describe Recorded Data (stream gauge, monrtonng well, aerial photos, previous inspections), if available Remarks US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C AI WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site 1f 2'A \1� V et ie 6 P1 t City/County W ("J CI_ Sampling Date 9/1 57/48." Applicant/Owner I nIII SCAA Z Oi/ r/I /let State (.t ) _ Sampling PPointP. fiy Investigator(s) Fi(%1-aC,.4/i. cl` f c lef i — Section, Towns Range See. L -/ T 5/@/ t2.6 7141 Landform (hillsiope, terrace, etc ) 0)( --NA) Local reli 'f (concave, onvex, none) Slope (%) Subregion (LRR) V Lat Long Datum Soil il Map Unit Name l `)I(4AI l,U6 i�(J 7s1va1 i� NWI classification �- Are climatic / hydrologic conditiMis on the site typical for this time of year? es > No (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed'? Are "Normal Circumstances" present'? Yes ->--No Are Vegetation . Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophyhc Vegetation Present? Yes X No Hydnc Soil Present'? Yes X No Wetland Hydrology Present'? Yes No Remarks Is the Sampled Area within a Wetland? Yes No pa v,} i4" O (Ct 0 1, tOJtn) — Kett v r`� trot zea( Gi l? d�,v ° WP, P, R 5 z - u5 3 VEGETATION — Use scientific names of plants ( P((4(C(vis -- t Tree Stratum (Plot size ) Absolute % Cover Dominant Indicator Species? Status Dominance Test worksheet. Number of Dominant Species That Are OBL, FACW or FAC (excluding FAC—) (A) 1 A ((.D\ 2 V / 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/ hnib Stratum (Plot size ) = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC (A/B) 1 Ail2 Prevalence Index worksheet Total % Cover of Multiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 I Herb Stratum (Plot size (O)C (C ) = Total Cover -/ FAA) F FAC species x 3 = FACU species x 4 = 75 1 P(,\G1(Cl vtic, G VLM(i i \n0i (.Q Cty UPL species x 5 = 2 Cr' e (y„' e,, i Cl ,/ a S �i Al 1-74C(% Column Totals (A) (B) 3 J Prevalence Index = B/A = 4 5 Hydrophyhc Vegetation Indicators — 1 - Rapid Test for Hydrophytic Vegetation — 2 - Dominance Test is >50% 3 - Prevalence Index is s3 01 _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6 7 8 g 10 Woody Vine Stratum (Plot size ) 7 z� 0 = Total Cover 1 2 Hydrophytic Present? Vegetation Yes \ No %y� Bare Ground in Herb ��V Stratum = Total Cover Remarks rmy corps or tngineers Great Plains — Version 2 0 ATTACHMENT C SOIL fi s- 4 8 Sampling Point y Profile Descnption (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 b_ 3 l o ',W a i o--) .—._._ __� - 3 -7 Ia./243/2. «-i- 7,c'-- 3� :�.. 12 ,�,rff,, tf / 7- /a_ /477-641,72- / VD 7 , )'`°t 3 ,:: -7 (2 1, f rt s 'Type C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matrix Hydric Soil Indicators (Applicable to all LRRs, unless otherwise noted ) _ Histosol (A1) _ Sandy Gleyed Matnx (S4) _ Histic Epipedon (A2) _ Sandy Redox (S5) Black Histic (A3) _ Stepped Matnx (S6) _ Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) _ 1 cm Muck (A9) (LRR F, G, H) . Depleted Matrix (F3) _ Depleted Below Dark Surface (A11) _ Redox Dark Surface (F6) _ Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydnc Soils3 _ 1 cm Muck (A9) (LRR I, J) _ Coast Praine Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) _ High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) _ Other (Explain in Remarks) 3indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Layer (if present) Type Hydnc Soil Present? Yes No Depth (inches) Remarks HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) _ Salt Crust (B11) _ Surface Soil Cracks (B6) _ High Water Table (A2) _ Aquatic Invertebrates (613) _ Sparsely Vegetated Concave Surface (B8) Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) _ Water Marks (B1) D --Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) rOxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) _ Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) _ Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) _ Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present? Yes No LZ Depth (inches) Wetland Hydrology Present? Yes No Water Table Present? Yes No f>bpth (inches) Saturation Present? Yes No I-/ Depth (inches) (includes capillary fringe) Descnbe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available Remarks /4 O yi ) US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site ilt r 1 V I\ G mug,' ,' P ApplicantlOwner lI J" 9d S(W\ .�cf (,�(r /-r A O tYj4 fAA () ( /AL -v ' Section, Township, Range City/County Vi%.! ct Sampling Date �^� ,,s//5�'/g' State CO Sampling Point- I"t i S Sed / s1? Landform (hillslope, terra etc ) j)COe.A/O Local reli ( ncd cavebonvex, none) Subregion (LRR) Lat y� Long Soil Map Unit Name Ar�/u1('t4l 5 Q Al/ Are climatic / hydrologic conditi s on the site twice' for this time o ea es Li yp r? Y X No Slope (%) Datum NWI classification (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes _)C No Are Vegetation , Sod , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophyhc Vegetation Present? Hydnc Soil Present? Wetland Hydrology Present? Yes Yes Yes No No No Is the Sampled Area within a Wetland? Yes No X Remarks IA Old 0) ,t) — eok a UPI_ veb&ictI �-- w s ci5 3; i- 75OOi7 VEGETATION — Use scientific names of plants Tree Stratum (Plot size ) Absolute % Cover Dominant Indicator Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC—) (A) 1 2 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/Shrub Stratum (Plot size ) = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC (NB) 1 2 Prevalence Index worksheet Total % Cover of Multiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = /� t �y % Herb Stratum (Plot size I, V /'1V ) = Total Cover Y F FACU species x 4 = 1 1 l 101 f� PA. UPL species x 5= 2 51I ( \ 01V N\ G /v Column Totals (A) (B) 3 l!��6r tr 1 oaf G1 1 o, if IS Ql Y VV f f v\0 col 5 Al ACLAJPrevalence Index = B/A = 4 Vo 'Os +s c: f try INN\ 0 Vs'i,a 5 'Atffa ( A I b\ SC IA i ok A / A/ 1_ Hydrophytic Vegetation Indicators 1 - Rapid Test for Hydrophytic Vegetation _ 2 - Dominance Test is >50% _ 3 - Prevalence Index is ≤3 01 _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6 f 7 8 9 10 Woody Vine Stratum (Plot size ) Total Cover 1 2 Hydrophytic Vegetation Present? Yes No Bare Ground in Herb Stratum1 = Total Cover Remarks US Army Corps of Engineers Great Plains— Version 2 0 ATTACHMENT C SOIL Alvtx • Sampling Point i..r Profile Descnpt)on (Describe to the depth needed`t) document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loci b —,5 /2''& /VD ------ __ --- --- C.. C S - iZ, /0c-f'a 4 /;' / In 7,J !IR :/P- 7-1O C Mitre:- ate. 'Type C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matrix. Hydnc Soil Indicators (Applicable to all LRRs, unless otherwise noted ) _ HIstosol (A1) _ Sandy Gleyed Matnx (S4) _ Histic Epipedon (A2) _ Sandy Redox (S5) Black Histic (A3) _ Stnpped Matrix (S6) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) — Depleted Matrix (F3) _ Depleted Below Dark Surface (A11) V Redox Dark Surface (F6) Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Sandy Mucky Mineral (S1) _ Redox Depressions (F8) 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3 _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) _ High Plains Depressions (P16) (LRR H outside of MLRA 72 & 73) _ Reduced Vedic (F18) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present unless disturbed or problematic Restrictive Layer (if present) Type s_ Hydric Soil Present? Yes if No Depth (inches) Remarks HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) Surface Water (Al) _ Salt Crust (B11) _ Surface Soil Cracks (66) High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (B8) Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) _ Water Marks (B1) D eason Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) xidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (63) (where not tilled) _ Crayfish Burrows (CS) Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) _ Inundation Visible on Aerial Imagery (87) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present'? Yes No Depth (inches) Wetland Hydrology Present? Yes I No ✓ Water Table Present? Yes No /Depth (inches) Saturation Present? Yes No I/ Depth (inches) (includes capillary fringe) Descnbe Recorded Data (stream gauge monitoring well, aerial photos, previous inspections), if available Remarks /n 6- 0, , b0 i.-4j $ w` f 4-11- , US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region i Project/Site / MOA G C,l/(ij VI I Applicant/Owner OICC C9 (//F j e ;- Investigators) OtJ','4i . yam' ?5r JS;C-1, i -1 "v Section, Township, Range Landform (hillslope, terrace, -I ) e-tri Of C -e _.r-- Local reh concave nvex, none) Slope (%) Subregion (LRR) C Lat. Long Datum Soil 3 ,4rf Map Unit Name inf l 5 4 AfEfl3 Go�/sLa € NWI classification Are climatic / hydrologic conditions on the site typical for this time of year? Yes - No (If no, explain in Remarks ) Are Vegetation . Soil , or Hydrology significantly disturbed? Are °Normal Circumstances° present? Yes.4"C No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. City/County weI Cr Sampling Date State CO Sampling Point Set IC/ 154/,fC 71 Hydrophytic Vegetation Present? Yes /1 No Hydric Soil Present? Yes No Wetland Hydrology Present'? Yes JK No Rema?stAa(( De de,53)o' fttat r' V)Nfe r rec,e.f't°rt %)ijSe,C0‘1@ilfO - tiave. spa ivotinsi7i ot— 'IC UP(i G14 S Jokes - "eto v tit/ i ikir/1 WQ ' t t Is the Sampled Area within a Wetland? Yes No VEGETATION — Use scientific names of plants. Tree Stratum (Plot size ) Absolute Dominant Indicator % Cover Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC—) (A) 1 2 IV n 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/Shrub Stratum (Plot size ) = Total Cover Percent of Dominant Species That Are OBL FACW, or FAC (A/B) 2 Al I/ t Prevalence Index worksheet Total % Cover of Multiply by 3 - OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = z i Herb Stratum (Plot size x ✓ ) = Total Cover FACU species x 4 = 15 oleic- 1 SC i tpti5 pLtiAc 4A5 UPLspecies x5= 2 iii Column Totals (A) (B) 3 Prevalence Index = B/A = 4 5 Hyydrophytrc Vegetation Indicators - Rapid Test for Hydrophytic Vegetation 2 - Dominance Testis >50% _ 3 - Prevalence Index Is .53 01 _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 61 7 8 g 10 Woody Vine Stratum (Plot size ) = Total Cover 1 2 Hydrophytic Vegetation Present? Yes No % Bare Ground in Herb Stratum = Total Cover Remarks t W P J -I o o I-ir9 7 US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL (_ .t `�. L s- /ig Profile Descnption (Descnbe to the depth needed to document the indicat6 r or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color oist % Color (moist) % Type' Loc2 — -- — cL o -J___D Z /� A -rip O L; `O5) 7,5-`PiR 3141 .5-7 C., /4,149 C 'Type C=Concentrabon, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining M=Matrix Hydnc Soil Indicators (Applicable to all LRRs, unless otherwise noted ) _ Histosol (A1) _ Sandy Gleyed Matnx (S4) Histic Epipedon (A2) Sandy Redox (S5) Black Histic (A3) _ Stripped Matrix (S6) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) _ Depleted Below Dark Surface (A11) Redox Dark Surface (F6) _ Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) Redox Depressions (F8) _ 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3 _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F16) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) _ Other (Explain in Remarks) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic / Restrictive Layer (If present) Type �+ 1 Hydric Soil Present? Yes ( No Depth (inches) Remarks Sampling Point 6 HYDROLOGY Wetland Hydrology Indicators Pnm ry Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) (/ Surface Water (Al) _ Salt Crust (B11) � Surface Soil Cracks (B6) _ High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (BB) _ Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) Water Marks (B1) pry -Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) . Oxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aerial Imagery (C9) _ Iron Deposits (B5) Thin Muck Surface (C7) _ Geomorphic Position (D2) Inundation Visible on Aenal Imagery (B7) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations r t Surface Water Present? Yes No A Depth (inches) 6a Wetland Hydrology Present? Yes No Water Table Present? Yes No V .i Depth (inches) Saturation Present'? Yes No Depth (inches) (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available Remarks po , L y` r� ®, �i r� ( ,{R,.��f ��r`",.�,,,� �/ ° l 1 rJZ'✓t. Lei 6 / g. , r�14I11'444' 129 d i US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site /1-114,m 5 (rive' Pit— City/County lice_ et Sampling Date 5/151"8 Applicant/Owner /(.0 / IS3'1,0, T -3,:x -rover/ i xi State L() Sampling P it 7 Investigator(s) 1-1 -AritA +( ,� 4 Q,4' Section, Township, Range Sete /715 G 74} Landform (hillslope, terrace, etc ) I P, icvnX ( e__/" Local relief (6)convex, none) Slope (%) Subregion (LRR) () Lat Long Datum Soil Map Unit Name 11 AC1401'9 e 1' t 7' V�f F /// NWI classification Are climatic / hydrologic conditionJon the site typical for this time of year? Yes -,No (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed' Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophybc Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No Wetland Hydrology Present? Yes > No Remarks w p 4,55 — o5ouQf3 LLf qq VI VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size - ) % Cover Species' Status Dominance Test worksheet Number of Dominant Species 1 That Are OBL, FACW, or FAC 2 (excluding FAC—) (A) 3 Total Number of Dominant 4 Species Across All Strata (B) = Total Cover Percent of Dominant Species Sapling/Shrub Stratum (Plot size ) That Are OBL, FACW, or FAC (NB) 1 2 Prevalence Index worksheet 3 Total % Cover of- Multiply by 4 OBL species x 1 = 5 FACW species x 2 = = Total Cover FAC species x 3 = Herb Stratum (Plot size ) FACU species x 4 = 1 \)-(01X Os ck P'TQ (of r i 76 061_ j1_ UPL species x 5= t,, 2 161 1OtX(i C (/ 01 -fief rV lPP LE — Z. f 4f / Column Totals (A) (B) 3 `F➢' "l f°' laSO7! RCIL 4 U Prevalence Index = B/A = 5 Hydrophybc Vegetation Indicators 1 - Rapid Test for Hydrophytic Vegetation 6 2 - Dominance Test is >50% 7 _ 3 - Prevalence Index is s3 01 8 4 - Morphological Adaptations' (Provide supporting 9 _ data in Remarks or on a separate sheet) 10 _ Problematic Hydrophytic Vegetation' (Explain) = Total Cover Woody Vine Stratum (Plot size ) 'Indicators of hydnc soil and wetland hydrology must 1 be present, unless disturbed or problematic 2 Hydrophytic g = Total Cover fY____ Vegetation Bare Ground in Herb Stratum Present? Yes No Remarks swat/Gie fl eS i rn" VAea v catlov\ tkocci 34 I iev/ US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL 444e/i Profile Description (Descnbe to the depth needed to document the indicator or corrflrm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type, Loc2 Eil .-.c / (et 2/%_m - - p-- - i ..5:4_'''/ /0 Li/t), ,V2- vi iffrb 7,4111.— 3/9 7 e_ t 1Type C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 'Location PL=Pore Lining, M=Matrix Hydnc Soil Indicators (Applicable to all LRRs, unless otherwise noted ) Indicators for Problematic Hydnc Sods' _ Histosol (Al) _ Sandy Gleyed Matrix (S4) 1 cm Muck (A9) (LRR I, J) _ Histic Epipedon (A2) _ Sandy Redox (S5) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Black Histic (A3) _ Stripped Matnx (S6) _ Dark Surface (S7) (LRR G) _ Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) High Plains Depressions (F16) _ Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) (LRR H outside of MLRA 72 & 73) _ 1 cm Muck (A9) (LRR F, G, H) _pleted Matrix (F3) _ Reduced Vedic (F18) _ Depleted Below Dark Surface (A11) Redox Dark Surface (F6) _ Red Parent Matenal (TF2) _ Thick Dark Surface (Al2) Depleted Dark Surface (F7) _ Very Shallow Dark Surface (TF12) _ Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) _ 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) 3lndicators of hydrophyhc vegetation and _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) wetland hydrology must be present, unless disturbed or problematic Restnctive Layer (if present) Type Hydric Soil Present? Yes No Depth (inches) Remarks i/ki a b474 d, Le. c__rYlda-f c_..�,_v.4ff 5 Sampling Point 7 HYDROLOGY Wetland Hydrology Indicators Primary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) _ Surface Water (A1) Salt Crust (B11) _ Surface Soil Cracks (B6) High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (B8) _ Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Pattems (B10) Water Marks (B1) Dry -Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) jxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (83) (where not tilled) _ Crayfish Burrows (C8) _ Algal Mat or Crust (B4) _ 'Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) _ Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) Inundation Visible on Aenal Imagery (B7) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present? Yes No 'Depth (inches) 1 Wetland Hydrology Present? Yes No Water Table Present? Yes No 1"7/Depth (inches) Saturation Present'? Yes No V Depth (inches) (includes capillary fringe) Descnbe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available Remarks US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region o� Project/Site 7 t r' l V v\ Vic ie i P! ( City/County ka i e d 7 Sampling Date Applicant/Owner Col 11�©� t� 1� 1/( 14 ,‘1L:::,)State re) Sampling Point pl + 0, <ec. I t7 P541,74,LL' Investigator(s) H oos-i- (JSC t '0,1r Section, Township, Range Landfonn (hillslope, terrace, etc ) e,til Local relief (concave, convex Subregion (LRR) Soil Map Unit Name Lat A i1 its 4 /rJ Are climatic / hydrologic conditionstin the site Typical for this time of year? Yes/>' No (If no, explain in Remarks ) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes r\ No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) Slope (%) Long Datum NW classification SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes x No Hydnc Soil Present? Yes No Wetland Hydrology Present? Yes No X Is the Sampled Area within a Wetland? Yes No Remarks 5vvkaIt fork 1rl0P IA/Cm c HtL€ s en" P q50 FAMO5qj VEGETATION — Use scientific names of plants. Tree Stratum (Plot size ) Absolute % Cover Dominant Indicator Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC—) (A) 1 2 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/Shrub Stratum (Plot size ) = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC (NB) 1 2 Prevalence Index worksheet Total % Cover of Multiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = HerbStratum(Plot size ) = Total Cover , ;A/! FACU species x 4 = Li t 1 ovIro . NAB {'"% lc f%C, UPLspecies x5= 2 POGI 13 t (3`'-i)l e La 5 '` cif 3 ti Column Totals (A) (B) 3 Prevalence Index = B/A = 4 5 Hydrophyhc Vegetation Indicators 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% _ 3 - Prevalence Index is s3 01 _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6 7 8 9 10 Woody Vine Stratum (Plot size ) C) = Total Cover 1 2 Hydrophytic Vegetation Present? Yes--)‹.— No % Bare Ground in Herb Stratum = Total Cover Remarks S Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL y (7-1 tor p..Ard Sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix ;inches) Color (moist) Redox Features Color (moist) % Type' Luce Texture (r7tl/L _ _-_ 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (TF2) Very Shallow Dark Surface (TF12) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators ;minimum of one required; check all that apply) Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (02) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No 1/C Depth (inches): Water Table Present? Yes No I/ Depth (inches): • Saturation Present? Yes No f Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Wetland Hydrology Present? Yes No Remarks: US Army Corps of Engineers Great Plains — Version 2.0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site MeA ,( v tf de 1 iP i +' Applicant/OwnerCO 0 iCrAt' FX(ret Zi" "F / , SCI Investigator(s) f''' ti j ° l k. P. ti r st k 0....17"4 --Section, Township Range Landform (hillslope, terire, etc ) `-) f/t+`if ace_, Subregion (LRR) (., Lat. Soil Map Unit Name T { G (1(1 ��9 =3445�' 1 %_' NWI classification rli, ,- Are climatic / hydrologic co dawns on the sit typical for this time of year? s -....' No (If no, explain in Remarks ) , Are °Normal Circumstances" present? Yes"`R ..,\ No City/County Sampling Date 85/1C/ State Sampling Point Pi f-? 5p�, Sep, .[ Cg 5,i/E".6 7t -ti Local relief t;oncave nvex, none) Slope (%) Long Datum Are Vegetation . Soil . or Hydrology significantly disturbed? Are Vegetation , Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transacts, important features, etc. Hydrophytic Vegetation Present? Yes _ No Hydnc Soil Present? Yes ."-v, No Wetland Hydrology Present? Yes No Remarks Is the Sampled Area within a Wetland? Yes No icA oxtvw 4 I s a rect i s ci U j �- [ Q c KS IAA_ re3 r VEGETATION — Use scientific names of plants. Tree Stratum (Plot size ) Absolute % Cover Dominant Indicator Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC—) (A) 1 2 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/Shrub Stratum (Plot size ) = Total Cover Percent of Dominant Species -- That Are OBL, FACW or FAC (A/B) 1 2 Prevalence Index worksheet Total % Cover of Multiply by 3 4 OBL species ' — x 1 = Z 5 FACW species 5 x 2 = }1r) FAC species ^" - x 3 = '""' ! Herb Stratum (Plot size t0)(Its ) = Total Cover 'I F22`((A p _ FACU species GC) x 4 = 7., 7 L�g J5 y 1 !'^_`""1 /-ITV ict ;CA ✓'eInP/UPS UPL species -z '' x5= I�tic) 2 1k t W (Amt -4 mew wed( f r,Yri v ? /111....;Column Totals K, - (A) 3S .� (B) 3 Juoccis AP. reAt l Y,,pA r t f Z j 1 Prevalence Index = B/A = 4 m l� [ 4 01' j I I C,t o f •' i C 'ti I 5 rAr. a,,, 5 Hydrophytic Vegetation Indicators — 1 - Rapid Test for Hydrophytic Vegetation — 2 - Dominance Test is >50% _ 3 - Prevalence Index is 53 0' _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6 7 8 9 10 Woody Vine Stratum (Plot size ) = Total Cover 1 2 Hydrophytic Vegetation Present? Yes No Bare Ground in Herb Stratum , = Total Cover Remarks ir( tr k.,t r f` sir y corps of Engineers Great Plains — Version 2 0 ATTACHMENT C �., ,-(- SOIL �f (ti's `2 /, Profile Description (Descnbe to the depth needed to document the indicator or donfirm Depth Matnx Redox Features The absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 0 - > /L.L`° -s 2 -/fa ,+y -''D -- - - CL 3 -ill- : , �� `�' // if .7:,) '7, ')'`,-1..).--/ ' 7 '`. 4 t. CL. _ 1Type C=Concentration, D=Deplebon, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matnx. Hydnc Soil Indicators (Applicable to all LRRs, unless otherwise noted ) Indicators for Problematic Hydric Sods' Hlstosol (A1) _ Sandy Gleyed Matnx (S4) _ 1 cm Muck (A9) (LRR I, J) _ Histic Epipedon (A2) _ Sandy Redox (S5) _ Coast Pralne Redox (A16) (LRR F, G, H) _ Black Histic (A3) _ Stepped Matnx (S6) _ Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ High Plains Depressions (F16) Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) (LRR H outside of MLRA 72 & 73) 1 cm Muck (A9) (LRR F, G, H) _ Dep"`ted Matrix (F3) _ Reduced Vedic (F18) _ Depleted Below Dark Surface (A11) j/Redox Dark Surface (F6) _ Red Parent Matenal (TF2) _ Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (TF12) Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) 'Indicators of hydrophytic vegetation and _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) wetland hydrology must be present unless disturbed or problematic. Restrictive Layer (if present) Type Hydric Soil Present? Yes l No Depth (inches) Remarks Sampling Point HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) _ Surface Water (A1) _ Salt Crust (B11) _ Surface Soil Cracks (B6) _ High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (B8) _ Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (610) _ Water Marks (B1) _ ry-Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) _ Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) _ Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) _ Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) Inundation Visible on Aenal Imagery (67) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present' Yes No Depth (inches) Wetland Hydrology Present? / Yes V No Water Table Present? Yes No j, ,Depth (inches) Saturation Present' Yes No V Depth (inches) (includes capillary fringe) Descnbe Recorded Data (stream gauge, monrtonng well aenal photos previous inspections) if available Remarks US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region Project/Site 4 (/14(' rl irti yr,/ II' City/County i ‘ ie I C( Sampling Date 51/5/1 ir Applicant/Owner oP l fc.10/f' CCHA)f C i'1Li State CO Sampling Point Pi:NO C P 9J��? /�O� Investigator(s) 1.- a ) `ir "t t A F c- i-. f4 0 -e - Section, Township, Range `= [t q 4F. 6 ?(�t�* !!aa 0 Landform (hillslope, tern e, etc ) t,� / ' cc.,. — Local relief (concave, convex, none) Slope (%) Subregion (LRR) (.2 Lat. ,�^ Long Datum Soil Map Unit Name3 Q i 91d( 4 ill`/P� r" * 1� v /f /// NWI classification PtijA Are climatic / hydrologic conditions on the site typical for this time of year? Yes f No (If no, explain in Remarks ) Are Vegetation . Soil , or Hydrology significantly disturbed'? Are "Normal Circumstances" present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Hydnc Soil Present? Wetland Hydrology Present? Yes X No Is the Sampled Area within a Wetland' Yes X/ No Yes No Yes-- No _ Remarks wp gss-✓� VEGETATION — Use scientific names of plants. �y / Absolute Dominant Indicator Tree Stratum (Plot size i V ) % Cover S ecies? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC FAC—) -- (A) dOX fl 1 SG ) t x C0MV ( RIO r 05 �' ""j _ 2 ()(excluding 3 AA/ Total Number of Dominant 4.- Species Across All Strata d (B) 4 + I O = Total Cover ( Percent of Dominant Species �/ That Are OBL, FACW, or FAC L / (A/B) Sapling/Shrub Stratum(Plot size r' )V 1 ) 1 SC((A ex-c1VC/t - " FAA/ 2 11 Prevalence Index worksheet Total % Cover ofMultiply by 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = ' = Total Cover FACU species x 4 = Herb.Stratum (Plot size 1 0." _ P t 1 IjirkO kticc) CORMrl G 10Ct FALL/ UPLspecies x5= �5�V fVl 2 jr0 ii-. `1 tc +fiUVV� S 7/V ---ill L- Column Totals (A) (B) 3 e5"{()Cn• D IreI-DAA515 '7 y ,F v Prevalence Index = B/A = 4 1 5 Hydrophytic Vegetation Indicators 1 - Rapid Test for Hydrophytic Vegetation - Dominance Test is >50% _ 3 - Prevalence Index is ≤3 0' _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 62 7 8 g 10 = Total Cover Woody Vine Stratum (Plot size ) 1 2 Hydrophytic Vegetation Present? Yes No = Total Cover % Bare Ground in Herb Stratum Remarks Uv ar erg 0-P- a ve'/ WiK . D ei. po; iti — Zoi. (loot - i vti.-cry le, US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL 5-/ ( //8 Sampling Point /O Profile Description (Descnbe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 b -5 to -rib -17, „In .-...r--- _._ _ - s L. n 1 GD`11,y7- 7 74(; 5 C in $L Z- 4� lo( -4e it / 7 2 � � t44, S L 'Type C=Concentration, D=Depletion, RM=Reduced Matnx, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matrix Hydnc Soil Indicators (Applicable to all LRRs, unless otherwise noted ) Histosol (A1) _ Sandy Gleyed Matrix (S4) Hisbc Eplpedon (A2) _ Sandy Redox (S5) _ Black Hisbc (A3) _ Stnpped Matrix (S6) _ Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) Depleted Below Dark Surface (A11) edox Dark Surface (F6) _ Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) _ Redox Depressions (F8) 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions (F16) _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydnc Soils3 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) _ Reduced Vedic (F18) _ Red Parent Matenal (TF2) _ Very Shallow Dark Surface (TF12) _ Other (Explain in Remarks) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Layer (if present) Type Hydric Soil Present? Yes No Depth (inches) Remarks u S - /`e_4lDk -4-4.4,6(,),_ 4u._ 01,ee 0 vi In -t) itelbta C.. t?... , 6> • ih sal97 6,)u;a.. e«, HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) _ Salt Crust (B11) _ Surface Soil Cracks (B6) High Water Table (A2) Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) _ Saturation (A3) _ Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) _ Water Marks (BI) _ ry-Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) _ Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) _ Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aenal Imagery (C9) Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) _ Inundation Visible on Aenal Imagery (B7) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present? Yes No Depth (Inches) Wetland Hydrology Present? Yes V No Water Table Present'? Yes No L//Depth (inches) Saturation Presents Yes No Depth (inches) (includes capillary fringe) Describe Recorded Data (stream gauge, monitonng well, aenal photos, previous inspections), if available Remarks US Army Corps of Engineers Great Plains— Version 2 0 ATTACHMENT C WETLAND DETERMINATION DATA FORM — Great Plains Region p � � (-Wave, � r�1 t Project/Site API eA \ ( J milt ve f �{ Applicant/Owner j ICojt)1 fn txrrt Jeri Invesbgator(s) f`(Q(i'Fo'1A. 1sp S(. 1 Section, Township, Range Landform (hdlslope, terrace, etc ) 0 kODIviJ Subregion (LRR) Soil Map Unit Name G City/County Iv 04 COampling Date �I I .)I� State (0 Sampling Point Local retie concave—,ionvex, none) Lat Long I;Jo/i'S 4 4r P c -� 'i ll Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks ) Are Vegetation . Soil or Hydrology significantly disturbed? Are °Normal Circumstances" present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers In Remarks ) Slope (%) Datum NWI classification SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophybc Vegetation Present? Hydnc Soil Present? Wetland Hydrology Present'? Yes X No Is the Sampled Area within a Wetland', Yes No Yes < No Yes %< No Remarks D./ . beAA-C klk .as SiGoADG vt LCD+ op O_ ,000.% — 5c -f So, ) C v-eoc,. kAr'4f vas (C11Ne'v atv'4G._ WNW' hie, crv1 D(of 100; yin —toot{ d '1 .. t ffo0 , VEGETATION — Use scientific names of re,C et/1H tO i'i'15 gg p�' Tree Stratum (Plot size /d B l.r ) Absolute % Cover Dominant Indicator Species? Status Dominance Test worksheet Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC—) (A) �q 1 pv o i 05 0IPJ { O r� j � �t 1 F4 2 r 3 Total Number of Dominant Species Across All Strata (B) 4 Sapling/Shrub Stratum (Plot size ) . A = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC (NB) !(/` 2 A/ i Prevalence Index worksheet Total % Cover ofMultiply by 3 OBL species /I Y .1= I 4 FACW species -- x 2 = 5 FAC species "'" x 3 = qq a Herb Stratum (Plot size F i 6,p ) = Total Cover Y 13151,,..,) FACU species 'tom Z... x 4 = i' , 70 f 1 TT j \CV5 c' , tit I1 r 1 UPL species -"'" x 5 = — ce'fO 2Jfr(iC(*QiI io Ire�7.PM5 2� a` r l Column Totals 7� (A) R" (B) 3 1(.7p Ii'✓�O,, 7 t Prevalence Index = B/A = 77 4 J 5 Hydrophytic Vegetation Indicators 1 - Rapid Test for Hydrophytic Vegetation _ 2 - Dominance Test is >50% 'e‘3 - Prevalence Index is ≤3 01 _ 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'indicators of hydnc soil and wetland hydrology must be present, unless disturbed or problematic 6 7 8 9 10 Woody Vine Stratum (Plot size ) = Total Cover 1 2 Hydrophytic Vegetation Present? Yes No % Bare Ground in Herb Stratum =Total Cover Remarks w P RSA - 0904 730 Liu -ID -6°11 US Army Corps of Engineers Great Plains — Version 2 0 ATTACHMENT C SOIL Akkm, 51/4548 Sampling Point. _— r Profile Descnption (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators ) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 d -4 / .L2-/ !J ---- ____- ..� _- /, a�_ / t %S/,' 3./l,� S' ( ter'li - ( ,'I-- 'Type C=Concentration, D=Depletion RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Location PL=Pore Lining, M=Matrix Hydric Soil Indicators (Applicable to all LRRs, unless otherwise noted ) Histosol (A1) _ Sandy Gleyed Matnx (S4) _ Histic Epipedon (A2) _ Sandy Redox (S5) Black Histic (A3) _ Stripped Matrix (S6) _ Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) — 1 cm Muck (A9) (LRR F, G, H)c‹:ileted Matrix (F3) Depleted Below Dark Surface (A11) r Redox Dark Surface (F6) Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ 2 5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) _ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3 _ 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) _ High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Matenal (TF2) Very Shallow Dark Surface (TF12) _ Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restnctive Layer (rf present) Type Hydric Soil Present? Yes i No Depth (inches) Remarks HYDROLOGY Wetland Hydrology Indicators Pnmary Indicators (minimum of one required, check all that apply) Secondary Indicators (minimum of two required) _ Surface Water (A1) _ Salt Crust (B11) _ Surface Soil Cracks (B6) _ High Water Table (A2) _ Aquatic Invertebrates (B13) _ Sparsely Vegetated Concave Surface (B8) _ Saturation (A3) _ Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Water Marks (B1) -9ry-Season Water Table (C2) _ Oxidized Rhizospheres on Living Roots (C3) _ Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) _ Crayfish Burrows (C8) _ Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aerial Imagery (C9) Iron Deposits (B5) _ Thin Muck Surface (C7) _ Geomorphic Position (D2) Inundation Visible on Aenal Imagery (B7) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations Surface Water Present? / Yes No Depth (Inches) / Wetland Hydrology Present? Yesy No Water Table Present? Yes No -Depth (inches) Saturation Present') Yes No Depth (inches) (includes capillary fnnge) Describe Recorded Data (stream gauge, monitonng well, aenal photos, previous inspections), if available Remarks s -'-o--, E. or oe,e,.> ic_ /i i g c4 ecT,�? (7.(-- <.(1 Ga. x L • c US Army Corps of Engineers Great Plains — Version 2 0 UTE LADIES' TRESSES ORCHID & COLORADO BUTTERFLY PLANT Amen Aggregate Resource Weld County, Colorado ATTACHMENT D TABLE OF CONTENTS Section/Title Page 1.0 INTRODUCTION 1 2.0 ENVIRONMENTAL SETTING 1 3.0 UTE LADIES' TRESSES ORCHID HABITAT CHARACTERISTICS 2 4.0 COLORADO BUTTERFLY PLANT HABITAT CHARACTERISTICS 3 5.0 HABITAT ASSESSMENT METHODS AND DATES 3 6.0 RESULTS 3 6.1 Wetland A 3 6.1.1 Location, Hydrology and Vegetation 3 6.1.2 Ecological Condition and Land Use History 4 6.1.3 Results 4 6.2 Wetland B 4 6.2.1 Location, Hydrology and Vegetation 4 6.2.2 Ecological Condition and Land Use History 4 6.2.3 Results 4 6.3 Wetlands C & D 4 6.3.1 Location, Hydrology and Vegetation 4 6.3.2 Ecological Condition and Land Use History 5 6.3.3 Results 5 6.4 Wetland E 5 6.4.1 Location, Vegetation and Hydrology 5 6.4.2 Ecological Condition and Land Use History 5 6.4.3 Results 5 6.5 Wetland F 5 6.5.1 Location, Vegetation and Hydrology 5 6.5.2 Ecological Condition and Land Use History 5 6.5.3 Results 6 6.6 Wetland G 6 6.6.1 Location, Vegetation and Hydrology 6 6.6.2 Ecological Condition and Land Use History 6 6.6.3 Results 6 6.7 Ditch Wetland 6 6.7.1 Location, Vegetation and Hydrology 6 6.7.2 Ecological Condition and Land Use History 6 6.7.3 Results 6 7.0 SUMMARY 7 8.0 FIGURES 8 9.0 TABLES 13 10.0 PHOTOS 17 11.0 REFERENCES 25 ATTACHMENT D LIST OF FIGURES Number/Title Page Figure 1. Project Location Map. 9 Figure 2. Aerial Photo10 Figure 3. Wetland Map 11 Figure 4. NRCS Soil Map. 12 LIST OF TABLES Number/Title Page Table 1. Waters of the U.S. Summary 14 Table 2. Vascular Plant Species List 15 LIST OF PHOTOS Number/Title Photo 1. Photo 2. Photo 3. Photo 4. Photo 5. Photo 6. Photo 7. Photo 8. Photo 9. Photo 10. Wetland D and Soil Pit 6. (5/15/18). Photo 1 1 . Cottonwood trees colonize a gravel deposit from the 2013 flood. (5/15/18) Page Cobbles deposited along the Big Thompson River by the 2013 floods. (5/15/18). 18 Pooled water from recent heavy rains in the Hill & Brush Ditch. (5/15/18) . 18 The Ditch Wetland flows into the Big Thompson River. (5/15/18) 19 Mature cottonwood gallery forest along the Big Thompson River. (5/15/18)19 View of the pastures and river on the Croissant Farms parcel. (5/15/18) . 20 Wetland A with shallow standing water in the south end. (5/15/18)20 Mature plains cottonwood trees adjacent to Wetland A. (5/15/18). 21 Wetland B is a shallow seasonal aquatic site. (5/15/18). 21 Wetland C and Soil Pit 7. (5/15/18) 22 22 23 Photo 12. Wetland E is located near the Big Thompson River. Pit 10 is pictured. (5/15/18).23 Photo 13. Wetland F is in a swale with Nebraska sedge in the wettest areas. (5/15/18)24 Photo 14. Wetland G is just west of the Ditch Wetland. Pit 4 is pictured. (5/15/18). 24 ATTACHMENT D 1.0 INTRODUCTION Coulson Excavating Company is developing plans to construct a sand and gravel pit known as the Aggregate Resource on two parcels located northeast of the intersection of Weld County Roads 54 and 13. The project site is located southeast of Johnstown, along the Big Thompson River in Section 19 of Township 5 North and Range 76 in Weld County, Colorado (Figure 1). The western parcel owned by Coulson Excavating measures approximately 117.6 acres and the eastern parcel owned by Croissant Family Farm measures 69.5 acres. To aid in project planning and the special use review, wetlands were delineated within seven proposed mining areas encompassing approximately 95.7 acres (Figure 2) . A total of 1.06 acres of wetlands were identified during the delineation in May 2018 (Figure 3; Table 1) . The U.S. Fish & Wildlife Service has identified wetlands in Lorimer County as potential habitat for two federally listed plants: the Ute ladies' tresses orchid (Spiranthes di/Livia/is) and the Colorado butterfly plant (Gaura neomexicana ssp. neomexicana) . To evaluate whether the project site is potential habitat for these two rare plants, a habitat assessment was completed during field reconnaissance in May 2018. This report describes the wetland and upland habitats present on the project site and assesses their suitability to support the Ute ladies' tresses orchid and Colorado butterfly plant. It describes the wetlands in terms of their geomorphic setting, vegetation, hydrology, and ecological condition, and discusses whether they are potentially suitable habitat. Please note, all Figures are in Section 8.0, Tables are in Section 9.0, and Photographs are in Section 10.0. 2.0 ENVIRONMENTAL SETTING As described above, the wetland delineation was conducted for seven proposed mining areas at the Aggregate Resource that cover a total of approximately 95.7 acres. These mining areas are located on the historic floodplain of the Big Thompson River on both the left and right sides. The 2013 flood event impacted the Big Thompson River through the project site, leaving large cobble and sand deposits along the river corridor which are visible on the aerial photograph (Photo 1; Figure 2) . As shown by the wetland map (Figure 3), several oxbow wetlands were identified on the historic floodplain of the river within the proposed mining areas (Figure 3) . The project site has had an agricultural land use history. The pastures south and east of the Big Thompson River are grazed by cattle, but the areas on the north side did not show evidence of recent grazing. The Hill and Brush Ditch, a diversion from the Big Thompson River, is located just north of the proposed mining areas (Photo 2) . A wetland -lined lateral ditch was flowing south from the Hill and Brush Ditch through the proposed mining area to the Big Thompson River at the time of the delineation in May 2018 (Photo 3) . The water appeared to be the result of recent heavy rainfall in the area that had collected in the Hill & Brush ditch, since it was not flowing at the time and only had pooled water in the area of the diversion structure. Smaller irrigation laterals east of the return flow ditch were in disrepair and appear to have been abandoned. There are two active oil and gas wells on the Croissant Family Farm parcel, and two unused oil and gas wells and a plugged and abandoned oil well are located on the Coulson parcel (Figure 2) . 1 ATTACHMENT D Mature cottonwood gallery forest lines the Big Thompson River and the western portion of the Hill and Brush Ditch on the Coulson parcel (Photo 4) . However, there are few trees on the eastern Croissant Farms parcel (Figure 2) . The pasture areas are dominated by introduced grasses and weeds including quackgrass (Elytrigia repens), Canada bluegrass (Poo compressa) , and intermediate wheatgrass (Thinopyrum intermedium) (Photo 5) . 3.0 UTE LADIES' TRESSES ORCHID HABITAT CHARACTERISTICS The Ute ladies' tresses is a federally listed Threatened perennial, terrestrial orchid endemic to moist soils in mesic or wet meadows near springs, lakes, or perennial streams (USFWS, 1995; Jennings, 1990) . In Colorado, the elevational range of known orchid populations is between 4,500 and 6,800 feet (Spackman et al., 1997) . The orchid prefers sites with permanent sub - irrigation such as floodplains where the water table is near the surface throughout the growing season and into the late summer or early autumn (USFWS, 1995; Jennings, 1990) . The current distribution of Ute ladies' tresses orchid includes populations in Colorado, Wyoming, Nebraska, Utah, Idaho, Montana, and Nevada (CNHP, 2018) . Colorado supports populations of the Ute ladies' tresses orchid in relict tallgrass prairie and irrigated pastures near South Boulder Creek in Boulder County, and in mesic meadows in the riparian woodland understory along Clear Creek in Jefferson County. The South Boulder Creek population represents one of the largest known occurrences of the orchid. Smaller populations have been identified adjacent to St. Vrain Creek near Hygiene in Boulder County and near the Cache La Poudre River at the northwest edge of Fort Collins in Weld County, Colorado. Historic collections from Colorado were made in 1856 from the South Platte River and in 1896 from Camp Harding near Colorado Springs in El Paso County. The Ute ladies' tresses orchid is relatively intolerant of competition, and is found primarily in communities where the vegetation is open and not overly dense or overgrown (USFWS, 1995; Jennings, 1990) . It cannot compete with emergent species such as cattails (Typha sp.) or aggressive species that form dense monocultures such as Canada thistle (Cirsium arvense) and reed canarygrass (Pha/aris arundinacea) (USFWS, 1995). Common associates in Colorado's Front Range populations include redtop, marsh milkweed (Asclepius incarnata), bluejoint reedgrass (Calamagrostis canadensis) , horsetail (Equisetum sp.) , lobelia (Lobelia siphilitica) , blue-eyed grass (Sisyrinchium sp.) , goldenrod (Solidago sp.) , arrowgrass (Triglochin sp.) , and blue vervane (Verbena hastata) (USFWS, 1995) . The Ute ladies' tresses orchid prefers soils ranging from fine silt and sand to gravels and cobbles. Occasionally, populations occur on highly organic or peaty soils. Soils composed of heavy or tight clay are typically unsuitable for this species. In addition, the orchid is not found in extremely saline or alkaline soils (pH > 8.0) (USFWS, 1995). The orchid frequently colonizes early -successional riparian habitats including point bars, sand bars, and low lying gravelly, sandy, or cobbly edges. These preferred habitat characteristics suggest that this species requires early to mid-seral riparian habitats created and maintained by streams active within their floodplains (USFWS, 1995) . 2 ATTACHMENT D 4.0 COLORADO BUTTERFLY PLANT HABITAT CHARACTERISTICS The Colorado butterfly plant (Gaura neomexicana ssp. coloradensis) is a federally listed Threatened, short-lived perennial herbaceous plant. This threatened subspecies is distinguished from the New Mexico butterfly plant (Gaura neomexicana ssp. neomexicana) based upon differences in pubescence and its disjunct range (Rocky Mountain Heritage Task Force, 1987). All of the currently known populations of the Colorado butterfly plant occur within a small, 17,000 acre area in southeast Wyoming, western Nebraska, and north -central Colorado (USFWS, 2000; CNHP 2018) . In Colorado, historic collections have been made in Adams, Boulder, Weld, Douglas, Jefferson, and Lorimer Counties (CNHP, 2018). However, the only natural populations of the butterfly plant presently known in Colorado are at Meadow Springs Ranch and the adjacent Soapstone Ranch near Fort Collins, Colorado. This subspecies occurs primarily on subirrigated alluvial soils on level or slightly sloping floodplains and drainage bottoms at elevations between 5,000-6,400 feet (USFWS, 2000). The butterfly plant requires early- to mid -successional riparian habitat, and colonies are often found in low depressions or along bends in wide, active, meandering stream channels a short distance upslope of the actual channel (USFWS, 2000) . It prefers open habitat that is not substantially overgrown by other vegetation, and in undisturbed sites it grows among native grasses (USFWS, 2015) . The Colorado butterfly plant appears to require shallow subsurface water, and it is not found where streams are deeply incised (Rocky Mountain Heritage Task Force, 1987). 5.0 HABITAT ASSESSMENT METHODS AND DATES Heather Houston of Western Ecological Resource, Inc. completed the habitat assessment on May 15, 2018. The habitat assessment characterized the wetlands and adjacent mesic areas based on plant community descriptions, site geomorphology, soil surveys, hydrologic characteristics, ecological condition, and land use history. Heather is certified by the U.S. Fish & Wildlife Service to conduct surveys for the Ute ladies' tresses orchid. 6.0 RESULTS 6.1 Wetland A 6.1.1 Location, Hydrology and Vegetation Wetland A (0.61 acre) is located in a slough just north of the Big Thompson River and east of Weld County Road 13 (Photos 6 & 7) . This wetland is a historic channel of the Big Thompson River. The seasonally saturated soil is supported by high groundwater. Shallow standing water was present at the time of the delineation after a period of heavy rains, but is likely present in most years. The vegetation is dominated by threesquare bulrush (Scirpus pungens) in the shallow water and saturated soil habitats, growing with Emory sedge (Carex emoryi), saltgrass (Distichlis spicata), foxtail barley (Hordeum jubatum) saltmeadow rush (Juncus gerardii), and variableseed saltbush (Atriplex heterosperma) . In the drier soils near the margin, the noxious weeds quackgrass (Elytrigia repens) , broadleaf pepperweed (Lepidium latifolium) and 3 ATTACHMENT D Canada thistle (Cirsium arvense)are also present Large, mature plains cottonwood (Populus deltoideis) trees border the sides of the wetland (Photo 7) Table 2 lists the vascular plant species identified on the Amen Gravel Pit project site during field reconnaissance in May 2018 6 1 2 Ecological Condition and Land Use History Wetland A is located north of the Big Thompson River in an area that did not show evidence of recent grazing Flood -deposited sediments were not observed in this area 6 1 3 Results Wetland A is located in a swale that is cut off from the active river system This wetland does not contain the early-seral riparian habitat that is often associated with the Ute ladies' tresses orchid and Colorado butterfly plant The NRCS soil survey indicates the area is mapped as Bankard Sandy Loam, 0-3% slopes, frequently flooded (Figure 4) This soil type is compatible with the Ute ladies' tresses orchid and Colorado butterfly plant, as it would allow for subirrigation However, given the plant communities that were observed during field reconnaissance, Wetland A is unlikely to support the Ute ladies tresses orchid or Colorado butterfly plant Specifically, the common associates were not present and instead the moist soil habitat at the penphery contains aggressive species such as quackgrass, Canada thistle, and broadleaf pepperweed These aggressive plants typically out -compete the Ute ladies' tresses orchid and Colorado butterfly plant, and therefore Wetland A is unlikely to support these two rare plants 6 2 Wetland B 6 2 1 Location, Hydrology and Vegetation Wetland B is a small seasonal aquatic site measuring 437 square feet (0 01 acre) (Photo 8) The depression is seasonally saturated to inundated by the shallow groundwater table and has a sparse cover of threesquare bulrush at the perimeter The overstory is a mature cottonwood gallery forest 6 2 2 Ecological Condition and Land Use History Wetland B is not a part of the active river system and it is surrounded by aggressive, introduced grasses There is no early seral habitat 6 2 3 Results Wetland B has soil that is suitable for both the Ute ladies' tresses orchid and Colorado butterfly plant, with a gravelly substrate that interacts with the seasonally high groundwater table However, the presence of introduced, aggressive grasses at the margin and the lack of early seral habitat and common associates indicate this area is not suitable habitat for these two rare plants 6 3 Wetlands C & D 6 3 1 Location, Hydrology and Vegetation Wetlands C and D are located in swales on the south side of the Big Thompson River Wetland C measures approximately 733 square feet (0 02 acre) (Photo 9) and Wetland D measures approximately 404 square feet (0 01 acre) (Photo 10) These depressions are historic secondary channels of the Big Thompson River which are seasonally saturated by the alluvial aquifer Wetland C is dominated by saltmeadow rush growing with quackgrass Wetland D has a sparse cover of threesquare bulrush growing with saltmeadow rush, saltgrass, and curly 4 ATTACHMENT D dock (Rumex crispus) Intermediate wheatgrass (Thinopyrum intermedium) and the noxious weed Canada thistle are common at the margins 6 3 2 Ecological Condition and Land Use History Wetlands C and D are not a part of the active river system and they are surrounded by aggressive, introduced grasses and noxious weeds There is no early seral habitat 6 3 3 Results Wetlands C and D are on subirrigated alluvial soils, and they occur in depressions However, the commonly associated plants are not present, and instead there are aggressive species that are known to preclude the presence of these two rare plants Wetlands C and D are not suitable habitat for Ute ladies' tresses orchid or the Colorado butterfly plant 6 4 Wetland E 6 4 1 Location, Vegetation and Hydrology Wetland E is located near the Big Thompson River on an overbank deposit from the 2013 flood (Photo 11) Wetland E measures approximately 844 square feet (0 02 acre) (Photo 12) Wetland E has an overstory of plains cottonwood and peachleaf willow (Salix amygda/oides) trees with a few sandbar willows (Salix exigua) in the shrub layer The understory is dominated by reed canarygrass (Phalan arundinacea) growing with meadow fescue (Festuca pratensis), Emory sedge, curly dock, teasel (Dipsacus fullonum), American yellowrocket (Barbarea orthocereas), and cheatgrass (Bromus tectorum) Wetland E is adjacent to the Big Thompson River and is influenced by the seasonally high groundwater associated with the river 6 4 2 Ecological Condition and Land Use History As described above, the area near Wetland E has been affected by overbank deposits from the 2013 floods 6 4 3 Results The gravelly deposits near Wetland E are not suitable habitat and the area within Wetland E is dominated by reed canarygrass, an aggressive competitor that excludes these two rare plants Therefore, Wetland E is not suitable habitat for the Colorado butterfly plant or Ute ladies' tresses orchid 6 5 Wetland F 6 5 1 Location, Vegetation and Hydrology Wetland F (0 26 acre) is located in the south-central portion of the project site in a slough that is an abandoned channel of the Big Thompson River (Photo 13) It is dominated by Nebraska sedge (Carex nebraskensis) in the wettest areas, with saltmeadow rush, saltgrass, Baltic rush (Juncus arcticus ssp ater), and clustered field sedge (Carex praegracilis) in the drier areas Other common species at the margins include quackgrass, teasel, intermediate wheatgrass, and prickly lettuce (Lactuca sernola) This slough is seasonally saturated by the high groundwater table associated with the alluvial aquifer of the Big Thompson River There was shallow standing water at the time of the delineation due to recent heavy rains 6 5 2 Ecological Condition and Land Use History Wetland F is not a part of the active river system but it does have gravelly, alluvial soils which are seasonally saturated and could provide a suitable hydrology for these two species 5 ATTACHMENT D 6 5 3 Results Wetland F has an appropriate landform, hydrology and soil type to potentially support the Ute ladies' tresses orchid and Colorado butterfly plant However, the existing plant community suggests it is not suitable habitat Specifically, the common associates are not present, and instead the moist soil habitat at the periphery of the wetland is dominated by aggressive introduced species such as quackgrass, teasel, intermediate wheatgrass, and prickly lettuce 6 6 Wetland G 6 6 1 Location, Vegetation and Hydrology Wetland G (0 04 acre) is located in a poorly -defined swale lust west of the Ditch Wetland (Photo 14) Wetland G is dominated by reed canarygrass, and was heavily grazed at the time of the delineation Other common species include quackgrass, fowl bluegrass, meadow fescue, Canada thistle, and intermediate wheatgrass The swale containing Wetland G appears to be an old, abandoned river channel that is influenced by seasonally high groundwater table near the river 6 6 2 Ecological Condition and Land Use History As noted above, this wetland was heavily grazed at the time of the delineation and is dominated by aggressive introduced plants 6 6 3 Results Wetland G is not suitable habitat for the Colorado butterfly plant or Ute ladies' tresses orchid due to heavy grazing and the presence of introduced species and weeds at the margins, and dense growth of reed canarygrass inside the wetland boundary 6 7 Ditch Wetland 6 7 1 Location, Vegetation and Hydrology The Ditch Wetland is located along an irrigation return flow ditch that conveys water from the Hill & Brush Ditch south through the project site to the Big Thompson River This linear wetland measures approximately 4,148 square feet (0 10 acre) (Photo 3) The Ditch Wetland is lined by areas of reed canarygrass, with a small amount of threesquare bulrush and the forbs blister buttercup (Ranunculus sceleratus) and threelobe beggarstick (Bidens tnpartita) Meadow fescue and intermediate wheatgrass occur along the margins The aquatic forb American speedwell (Veronica amencana) grows in the shallow water of the ditch Water flowing from the Hill and Brush Ditch to the Big Thompson River creates saturated soil conditions for wetland development along the ditch banks At the time of the delineation, the Hill and Brush Ditch had pooled water from recent heavy rains that was spilling over into the ditch wetland and flowing south to the Big Thompson River 6 7 2 Ecological Condition and Land Use History The Ditch Wetland is a man-made feature that is periodically maintained and heavily grazed by cows 6 7 3 Results The ditch wetland is not suitable habitat for the Colorado butterfly plant or Ute ladies' tresses orchid 6 ATTACHMENT D 7.0 SUMMARY Although the project site has the appropriate topography and soil types for the Ute ladies tresses orchid and Colorado butterfly plant, it is dominated by numerous aggressive, introduced species that typically exclude these two rare plants because they form tall, dense and often monotypic stands. These include areas of reed canarygrass, quackgrass, intermediate wheatgrass, and weeds such as Canada thistle and teasel. The Ute ladies tresses orchid would not be visible in May if it were present on the site. However, rosettes of the Colorado butterfly plant would likely be visible. No large rosettes of this species or its close relatives were observed onsite during field reconnaissance. Moreover, other native forb species which are commonly associated with high -quality wetland and riparian habitats that support these plants were not observed in the project area. The project site is unlikely to support the Colorado butterfly plant or Ute ladies tresses orchid and the proposed gravel operation should not directly impact these plants. 7 COLORADO 104°57'0"W 1 Big Thompson River 104°56'0"W ATTACHMENT D Coulson Parcel 104°57'0"W BASE: USGS 7.5' Johnstown Quadrangle, Colorado Map Location T 104°56'0"W N A 1:24,000 9 104°55'0"W l Weld County Rd. 54 104°55'0"W Figure 1. Project Location Map Amen Pit Prepared by: z �IRCE 1 1..CQLIXI Birch Ecology LLC 429 Main Street P.O. Box 1 70 Lyons, CO 80540 (720) 350-2530 www. birchecology.com mintemilaninainsionsailmaisalainainunielininallanoseseinsaimainal flflS Inismasaimenninissuiennilill 4-- . 104 56'0"W TTa /N r SOT n 104 56'0"W LEGEND NRCS Soil Data Map Units 3 - Aquolls and Aquents, Gravelly Substratum a 10 - Bankard Sandy Loam, 0-3% slopes, frequently flooded 15 - Colby Loom, 1-3% slopes 24 - Ft. Collins Loam, 0-3% slopes 31 - Kim Loam, 0-1% slopes 34 - Kim Loam, 5-9% slopes 85 - Water Parcel Boundary Proposed Pits N A 1:6,500 12 Figure 4. NRCS Soil Map Amen Pit Weld County, CO Prepared by: Buccll L'cvt,cx:r Birch Ecology LLC 429 Main Street P.O. Box 170 Lyons, CO 8054C (720) 35C-2530 www. bichecology.COm ATTACHMENT D TABLE 1 Potential Waters of the U.S. Summary Aggregate Resource Potential Waters of the U S Area Location Wetlands Wetland A Wetland B Wetland C Wetland D Wetland E Wetland F Wetland G Ditch Wetland 26,500 ft2 (0 61 ac) 437 ft2 (0 01 ac) 733 ft2 (0 02 ac) 404 ft2 (0 01 ac) 844 ft2 (0 02 ac) 11,238 ft2 (0 26 ac) 1,590 ft2 (0 04 ac) 4,148 ft2 (0 10 ac) 40 383467 -104 944055 40 382022 - 104 940798 40 379958 - 104 942156 40 379582 - 104 941409 40 381596 - 104 935249 40 378448 - 104 935616 40 380523 - 104 932294 40 380861 - 104 931667 Total Wetlands 46,306 ff2 (1 06 ac) 14 ATTACHMENT D TABLE 2 Vascular Plant Species List Aggregate Resource Scientific Name Trees Elaeagnus angustifoha Populus de/to/des Sal►x amygdalo►des Shrubs Atriplex canescens Salo( exigua Perennial Graminoids Agropyron cristatum Carex emory► Carex nebrascens►s Carex praegrac►I►s D►st►chl►s spicata Eleochans palustns Elytng►a repens (Elymus) Festuca pratensis Hordeum jubatum Juncus arct►cus ssp ater (J balticus) Juncus gerard►► Pascopyrum smith' Phalans arundinacea Poa cornpressa Poa palustns Sc►rpus pungens (S americanus) Thinopyrum ►ntermed►um Perennial Forbs Acropt►lon repens Ambrosia ps►lostachya Barbarea orthoceras Cardona draba C►rs►urn arvense Convolvulus arvensis Lep►d►um lat►fol►um Ma/va neglecta Medicago lupul►na Plantago major Ranunculus cymbalana Rumex crispus Taraxac urn offic►nale Common Name Russian olive Plains cottonwood Peachleaf willow Fourwing saltbush Sandbar willow Crested wheatgrass Emory sedge Nebraska sedge Clustered field sedge Saltgrass Creeping spikerush Quackgrass Meadow fescue Foxtail barley Baltic rush Saltmeadow rush Western wheatgrass Reed Canarygrass Canada bluegrass Fowl bluegrass Threesquare bulrush Intermediate wheatgrass Russian knapweed Naked spike ragweed Wintercress White top Canada thistle Field bindweed Broad leaf peppergrass Common mallow Black medic Common plantain Shore buttercup Curly dock Dandelion 15 Family Eleangnaceae Salicaceae Salicaceae Wetland Origin* Status** I+ FACU N FAC N FACW Chenopodiaceae N NL Salicaceae Poaceae Cyperaceae Cyperaceae Cyperaceae Poaceae Cyperaceae Poaceae Poaceae Poaceae Juncaceae Juncaceae Poaceae Poaceae Poaceae Poaceae Cyperaceae Poaceae Asteraceae Asteraceae Brassicaceae Brassicaceae Asteraceae Convolvulaceae Brassicaceae Malvaceae Fabaceae Plantaginaceae Ranunculaceae Polygonaceae Asteraceae N FACW I NL N OBL N OBL N FACW N FACW N OBL I+ FACU I FACU N FACW N FACW I OBL N FACU I FACW I FACU N FACW N OBL I NL I+ NL N FACU N OBL I+ NL I+ FACU I+ NL I+ FACW I NL I FACU I FAC N OBL I FAC I FACU ATTACHMENT D TABLE 2 Vascular Plant Species List Aggregate Resource Scientific Name Trifobum repens Veronica amencana Annual/Biennial Graminoids Bromus tectorum Annual/Biennial Forbs Atnplex heterosperma Capsella bursa-pastons Carduus nutans ssp macrolepis Descurainia Sophia Dipsacus fullonurn ssp sylvestns Erodium cicutarium Kochia scoparia Lactuca sernola Ranunculus sceleratus Sisymbnum altissimum Verbascum thapsus * Origin Common Name White Dutch clover American speedwell Cheatgrass Vanableseed saltbush Shepherd's purse Musk thistle Flixweed Teasel Crane's bill Kochia Prickly lettuce Blister buttercup Tumble mustard Great mullein N = Native I = Introduced I+ = Colorado State Noxious Weed Family Fabaceae Scrophulanaceae Poaceae Chenopodiaceae Brassicaceae Asteraceae Brassicaceae Dipsacaceae Geraniaceae Chenopodiaceae Asteraceae Ranunculaceae Brassicaceae Scrophulanaceae ** Wetland Status OBL = Obligate Wetland FACW = Facultative Wetland FAC = Facultative FACU = Facultative Upland UPL = Obligate Upland NO/NL = No Status in this Region 16 Wetland On in* Status** FACU OBL NL NL FACU FACU NL FACU NL FACU FAC OBL FACU UPL ATTACHMENT D Photo 1. Cobbles deposited along the Big Thompson River by the 2013 floods. (5/15/18). Photo 2. Pooled water from recent heavy rains in the Hill & Brush Ditch. (5/15/18). 18 ATTACHMENT D Photo 3. The Ditch Wetland is along a return flow ditch connecting the Hill & Brush Ditch to the Big Thompson River. (5/15/18). Photo 4. Mature cottonwood gallery forest along the Big Thompson River on the Coulson parcel. (5/15/18). 19 Photo 5. View of the pastures and Big Thompson River on the Croissant Family Farms parcel. (5/15/18). ATTACHMENT D Photo 7. Mature plains cottonwood trees adjacent to Wetland A. (5/15/18). Photo 8. Wetland B is a shallow seasonal aquatic site with a sparse cover of threesquare at the margins. (5/15/18). 21 Photo 11. Young cottonwood trees colonize a gravel deposit from the 2013 flood adjacent to Wetland E. (5/15/18). Photo 12. Wetland E is located near the Big Thompson River. Pit 10 is pictured. (5/15/18). ATTACHMENT D 11.0 REFERENCES Ackerfield, J. 2015. The Flora of Colorado. BRIT Press, Ft. Worth, Texas. 818 p. Colorado Natural Heritage Program (CNHP) . 2003. Field Guide to the Wetland and Riparian Plant Associations of Colorado. Colorado Natural Heritage Program, Fort Collins, Colorado. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. La Roe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish and Wildlife Service Pub. FWS/OBS- 79/31, Washington, D.C., 103 p. Culver, D.R. and J.M. Lemly. 2013. Field Guide to Colorado's Wetland Plants: Identification, Ecology and Conservation. Colorado Natural Heritage Program, Fort Collins, Colorado. Harrington, H.D. 1964. Manual of the Plants of Colorado. The Swallow Press, Inc. Chicago, Illinois 60605. Kartesz, J.T. 1994a. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 1 - Checklist. Second edition. Timber Press, Inc. Portland, Oregon. 622 p. Kartesz, J.T. 1994b. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Vol. 2 - Thesaurus. Second edition. Timber Press, Inc. Portland, Oregon. 816 p. Lichvar, R.W., M. Butterwick, N.C. Melvin, and W.N. Kirchner. 2014. The National Wetland Plant List: 2014 Update of Wetland Ratings. Phytoneuron 2014-41: 1-42. NatureServe Explorer: An Online Encyclopedia of Life. http://www.natureserve.org/explorer/ Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at the following link: https://websoilsurvey.sc.egov.usda.gov/. Accessed July 22, 2018. U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) . ERDC/EL TR-10-1. U.S. Army Engineer Research and Development Center, Vicksburg MS. U.S. Army Corps of Engineers. 1987. Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, MS. USFWS, 2015. Endangered Species - Plants. Colorado Butterfly Plant website. https://www.fws.gov/mountain-prairie/es/coloradoButterflyPlant.php 25 ATTACHMENT D USDA, NRCS 2014 The PLANTS Database (http //plants usda gov, 28 February 2014) National Plant Data Team, Greensboro, NC 27401-4901 USA University of Colorado Herbarium (COLO) Specimen Database of Colorado Vascular Plants http //cumuseum colorado edu/Research/Botany/Databases/search php Weber, W A and R C Whitmann 2012 Colorado Flora Eastern Slope, Fourth edition University Press of Colorado Boulder, Colorado Weber, WA & RC Wittmann, 1992 Catalog of the Colorado Flora a Biodiversity Baseline University Press of Colorado Niwot, Colorado Including most recent addenda available from CU Herbarium (COLO), Boulder, Colorado 26 ATTACHMENT E N m -11 Ln Lri r -R O O O O m ru m H CD SENDER: COMPLETE THIS SECTION • Complete items ) , 2, and 3. • Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. 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Service Type o Adult Signature Olidutt Signature Restricted Delivery rconi led Mail® ❑ Certified Mail Restricted Delivery o Collect on Delivery ❑ Collect on Delivery Restricted Delivery "Aall 7 013 2630 0001 6 4 5 3 3 514 Aril Restricted Delivery )o) o Priority Mail Express® O Registered Main" O Registered Mail Restricted !Ashy" etum Receipt for Merchandise L Signature Confirmation'M Li Signature Confirmation Restricted Delivery PS Form 3811, July 2015 PSta5e OZHQ00:905x `'` =f =f O i for Instructions Page 1 of 18 ATTACHMENT E m m C O m ru m HI SENDER: COMPLETE THIS SECTION • Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. Public Service Co Of Colo Po Box 1979 Loveland. CO 80201-1979 i i mi i i III 9590 9402 4547 8278 2167 12 COMPLETE THIS SECTION ON DELIVERY A. Signature X O Agent ❑ Addressee B. Received by (Printed Name) C. 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CO 80534-8222 11111111 1111111111111111111 1 11111111111111 9590 9402 4547 8278 2171 46 i COMPLETE THIS SECTION ON DELIVERY A. Signature J X7;6____5c A Agent $500 Received by (Printed nwn,e, 9. Da fra f ll— D. Is delivery address different from item 1? ❑ejfi If YES, enter delivery address below: O No ?013 2630 0001 6453 2548 3. Service Type a Adult Signature Ci adult Signature Restricted Delivery tied Mail® o Certified Mail Restricted Delivery O Collect on Delivery Delivery Restricted Delivery tail I l Restricted Delivery over ISM O 0 Priority Mail Express® Registered M il'M Registered Mad Restricted very slum Receipt for Merchandise Signature Confirmation'" Signature Confirmation Restricted Delivery PS Form 3811, July 2015 PSN 7530-02-000-9053 Domestic Return Receipt U.S. Postal Servicem CERTIFIED MAIL RECEIPT (Domestic Mall Only; No insurance Coverage Provided) JOHNSTOWN r CO 3057 Postl4' tii Certified Foe Return Receipt Fee ktndorsoment Required) Restricted Delivery Fee (Endorsement Required) SU Tallest Onetann It Cane Katherinertigthwalm 26547 County Road 15 Johnstown, CO 80534-8222 r Instructions SENDER: COMPLETE THIS SECTION • Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. Weld County Public Works 1111 H Street Greeley, CO 80632 N i i u a II u 11 I i 9590 9402 4547 8278 2167 81 in Uri m m 0 a O C mn nJ HI 0 N U.S. Postal Servicew CERTIFIED MAIL RECEIPT (Domestic Mall Only; No Insurance Coverage Provided) For delivery information visit our website at www.usps.com3 GREELE r: CC 3U631 Certified Fee R cue. Return. Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) lelein Ct • -. _., D Carat s Weld Cdurfty Public Works 1111 H Street f{ Greeley,CO 80632 COMPLETE THIS SECTION ON DELIVERY O Agent ▪ Addressee B. Received by (Printed Name) C. Date of Delivery --Mario Ml ci "tart - D. Is delivery address di ent from item 1? O Yes If YES, enter delivery address below: O No 3. Service Type o Adult Signature D Adult Signature Restricted Delivery testified Mad® o Certified Mail Restricted Delivery O Collect on Detrvery ' ' r."--.-• nn De.very Restncted Delivery 7013 2630 0001 6453 3590 Mail Mail Restricted Delivery (over ib00) PS Form 3811, July 2015 PSN 7530-02-0009053 O Priority Mail Express® ❑ Registered Mail"' O Registered Mail Restricted ery Receipt for Merchandise o Signature Confirmation". C Signature Confirmation Restricted Oe very Domestic Return Receipt NTSit /7....-Postmeric441\1 Here "31 r Instructions Page 5 of 18 ATTACHMENT E 1% SENDER: COMPLETE THIS SECTION • Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. Xcel Energy 1901 E. Horsetooth Rd. Ft. Collins, CO 80525 i u mi u u i 9590 9402 4547 8278 2167 29 i COMPLETE THIS SECTION ON DELIVERY .it. Signature B. Received by (Panted Name) ❑ Agent ❑ Addressee C. Date of Delivery D. is delivery address different from item 1? ❑ Yes If YES, enter delivery address below: O No 7013 2630 0001 6453 3651 PS Form 3811, July 2015 PSN 7530-02-000-9053 U.S. Postal Servicem, CERTIFIED MAIL RECEIPT (Domestic Mail Only; No Insurance Coverage Provided) For delivery information visit our website at www.usps.com;, FORT (0LLINS . Co S0525 Pos ge `s1 Certified Fee Return Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) $il, Total Pnctnrtn R Fang #il.ijil crt.nr $ 1=l . flli Xcel Energy Sr 1901 E Horsetooth Rd. Ft. Collins, CO 80525 I I t aftrark Here 8030 05/31,'21119 for Instructions SENDER: COMPLt : ,HIS SECTION ▪ Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. Centurylink 931 14th Street Denver. CO 80202 i i I m mi In" II u� i 9590 9402 4547 8278 2167 67 i 3. Service Type O Adult Signature ❑ Adult Signature Restricted Delivery &Certified Made O Certified Mail Restricted Delivery o Collect on Delivery Delivery Restricted Delivery UI LI Restricted Delivery I {over $500) a m O C O O ru in 0 N O Priority Mail Expressst) O Registered Mail"Y ❑ Registered Mad Restricted ey eturn Receipt for Merchandise ( ,` Signature Confrmation'M LI Signature Confirmation Restncted Delivery Domestic Return Receipt U.S. Postal Servicerm CERTIFIED MAIL,. RECEIPT (Domestic Mall Only; No Insurance Coverage Provided) DENt'EF • CO 2020: w- P ;y Certified Fee $0.00 Return Receipt Fee (Errinrsement Required) Restricted Delivery Fee 'Fndorsemert Requires $il.Q total Postage & Fees ft sc'.c $0,00 CO. nn Centurylinw 931 14th Street Denver, CO 80202 12301 'eft p31t2Ot COMPLETE THIS SECTION ON DELIVERY A. Signature X B. Received by (Printed Name) ❑ Agent ❑ Addressee C. Date of Delivery D. Is delivery address different from item 1? ❑ Yes If YES, enter delivery address below: ❑ No �D13 2630 0001 6453 3606 3. Service Type O Adult Signature o Adult Signature Restncted Delivery certified Male o Certified Mat Restricted Delivery O Collect on Delivery ❑ Collect on Delivery Restricted Delivery AM Flail Restricted Delivery ►0) ❑ Priority Mail Express O Registered Masi" ❑ Registered Mail Restricted Jirtrvery turn Receipt for Merchandise Signature Confirmaton" Signature Confirmation Restncted Delivery PS Form 3811, July 2015 PSN 7530-02-000-9053 Domestic Return Receipt for Instructions Page 6 of 18 ET - m .11 r1 D D D m ru m C N r ATTACHMENT E SENDER: COMPLETE THIS SECTION ■ Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. John & Jennifer Cummings Po Box 814 Johnstown. CO 80550-0814 i i i i u III 9590 9402 4547 8278 2168 28 i COMPLETE THIS SECTION ON DELIVERY A. Signature X B. Received by (Printed Name) ❑ Agent ❑ Addressee C. Date of Delivery D. Is delivery address different from item 1? O Yes If YES, enter delivery address below: O No 7013 2630 0001 6453 3569 3. Service Type O Adult Signature �Signatso Restncted Delivery Mail® o Certified Mail Restricted Delivery D Collect on Delivery n enaect on Delivery Restricted Delivery Mail Restncted Delivery ) o Priority Mail Express'.lJ D Registered Mail'" o Registered Mail Restricted 11:4;verYurn Receipt for Merchandise ❑ Signature ConfirmationTM o Signature Confirmation Restricted Delivery PS Form 3811, July 2015 PSN 7530-02-000-9053 Domestic Return Receipt U.S. Postal Servicem CERTIFIED MAIL. RECEIPT (Domestic Mail Only; No Insurance Coverage Provided) For delivery information visit our website M www.usps.comn WI NDS0R• CO 80550 Postale Certified Fee Return Receipt Fee r Endorsement Required) Restricted Delivery Fee (Endorsement Required) $ . ,' o rant --- a • t1' t c! i ,01) / • t11.0l1 C John & Jennifer Cummings Po Box 814 Johnstown. CO 80550-0814 for Instructions SENDER: COMPLETE THIS SECTION ■ Complete items 1, 2, and 3. ■ Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. DCP Midstream 1324 N 7th Ave Greeley. CO 80631 i I II1II III mi 11 u 9590 9402 4547 8278 2167 98 i m m _D r -R D 0 ru rn a N U.S. Postal Servicelrt CERTIFIED MAILM RECEIPT (Domestic Mall Only; No Insurance Coverage Provided) For delivery information visit our website at www.usps.corna GREELEY, CC 3l_15?2 Pos 'W' Certified Fee Return Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) �r tom/ Total Postage & Fees 7i DCP Midstream 1324 N 7th Ave Greeley. CO 80631 fa. 11).00 VI, Oft 'ohm _ R039),..." I 31/2019 • COMPLETE THIS SECTION ON DELIVERY A. Signature X B. Received by (Printed Name) ❑ Agent ❑ Addressee C. Date of Delivery D. Is delivery address different from item 1? O Yes If YES, enter delivery address below: O No 7013 2630 0001 6453 3583 3. Service Type l Adult Signature �L ; utt Signature Restricted Delivery ified Marl® Li Certified Mail Restricted Delivery C Collect on Delivery r. ^ Delivery Restricted Delivery ul IA Restricted Deliver,' I (over su U O Li U Priority Mail ExpressvI9 Registered Mail r" R tared Marl Restricted end Return Receipt for Merchandise Signature Confirmatiorins Signature Confirmation Restricted Delivery PS Form 3811, July 2015 PSN 7530-02-000-9053 Domestic Return Receipt or Instructions Page 7 of 18 ATTACHMENT E N 0LSI rn rn _D r-i O O rn -13 ru m Hi N SENDER: COMPLET: THIS SECTION • Complete items 1,4, and 3. • Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. Steven Buhlke 26502 County Road 13 Windsor, CO 80534-8234 n illill 9590 9403 0398 5163 4162 85 COMPLETE THIS SECTION ON DELIVERY A. Signature X ❑ Agent ❑ Addressee B. Received by (Printed Name) C. Date of Delivery D. Is deivery address different from item 1? 0 Yes If YES, enter delivery address below: O No O Prlority Mail Express® O Registered Mart'"' ❑ rstered Mail Restricted rvery Return Receipt for Merchandise ❑ Signature Confirrnation'M 7 013 2630 0001 6453 3507 O Signature Confirmation PS Form 3811, April 2015 PSN X530-02-000-9063 3. Service Type 0 Adult Signature O Jdutt Signature Restricted Delivery Certified MS® 0 Certified Mail Restrcted Delivery O Collect on Delivery n rotted on Delivery Restricted Delivery SIRestricted Delivery Restricted Delivery 1 ttlirtir 'ad) Domestic Return Receipt U.S. Postal Servicerm CERTIFIED MAIL RECEIPT (Domestic Mall Only; No Insurance Coverage Provided) For delivery information visit our website at www.usps.coma JOHNSTOWN • C 8t13 4 Return Receipt Fee (Endorsement Required) Restncted Delivery Fee (Endorsement Required) $ Total Postaae & Fees Steven BLit -like 26502 County Road 13 Windsor, CO 80534-8234 for Instructions • U.S. Postal Servicen., CERTIFIED MAIL RECEIPT (Domestic Mail Only; No Insurance Coverage Provided) For delivery information visit our website at www.usps.com„ Posed Certified Fee (E�� Receipt Fee Required) Nestrncted Delivery Fee Endorsement Required) ai:l, is Total Postage 8 $ Fees tr t i f Michael gtLndra Pallotto ra CD 26500 County Road 13 • 411. 00 $U.00 I Denver, CO 80534-8234 0 I r Instructions Page 8 of 18 rR ru LT) m rn -D r -R C7 O O ru a co MI SENDER: COMPLETE TriiS SECTION ■ Complete items 1, 2, and 3. I Print your name and address on the reverse so that we can return the card to you. • Attach this card to the back of the mailpiece, or on the front if space permits. Viola Croissant 27775 Blackfoot Rd Loveland, CO 80537 111111111111 i i 1111110111111111 9590 9443 0398 5163 4160 01 ■ 1 ► COMPLETE THIS SECTION ON DELIVERY' A. Signature X D Agent D Addressee B. Received by (Printed Name C. Date of Delivery D. Is delivery address different from item 1? ❑ Yes If YES, enter delivery address below: ❑ No 3. Service Type D Adult Signature O Adult Signature Restricted Delivery Rtertified Mail® o Certified Maii Restricted Delivery ❑ Collect on Del very . - nnunnt nn Delivery Restricted Delivery 7013 2630 0001 6453 3521 dal Aai+ Restricted Delivery i tuvti.nA) D Priority MS Express ❑ Registered fir" ❑ Registered Mail Restricted livery Return Receipt for Merchandise E Signature Confirmation T" J Signature Confirmation Restricted Delivery PS Form 3811, April 2015 PSN 7530-02-000-9053 Domestic Return Receipt U.S. Postal Service,. CERTIFIED MAILIM RECEIPT (Domestic Mall Only; No insurance Coverage Provided) For delivery Information visit our website at www.usps.com3 JOHNSTOWN ! £0 80534 Po44• Certified Fee Return Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) 'Cl. rota! Postage & Fees Se �rtt 4II.lajO Sn.Oti #t -l.00 $0.00 Viola Crohgt 27775 Blackfoot Rd Loveland, CO 80537 for Instructions r SENDER: COMPLETE THIS SECTION ■ Complete items 1, 2, and 3. • Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. Sinclair Pipeline Company 7275 S. Tucon Way, Suite 250 Englewood, CO 80112 i i i u 9590 9402 4547 8278 2167 43 i O ru in Lin ..D O 0 CD ru rn 0 r` U.S. Postal Service,. CERTIFIED MAIL, RECEIPT (Domestic Mali Only; No Insurance Coverage Provided) For delivery Information visit our website at www.r':p•..t.:.:^4 ENGL EWO00 , (*ail ii L 4 Certified Fee Return Receipt Fee (Endorsement Required) Restricted Delivery Fee (Endorsement Required) $ 0 Total Postage & Fees rri ` 1 Sinclair Pipeline Company ill. 00 "LOU sr' 00 1112ir1 MAY � Postmark Here R019:>#, , 1 ��..-: ,?illy 7275 S. Tucon Way. Suite 250 Englewood. CO 80112 COMPLETE THIS SECTION ON DELIVERY A. Signature X B. Received by (Printed Name) O Agent D Addressee C. Date of Delivery D. Is delivery address different from item 1? O Yes If YES, enter delivery address below: ❑ No 7013 2630 0001 rnkd% 3. Service Type D Adult Signature Litt Signature Restricted Dekvery feed Malt® ❑ Certified Mail Restricted Delivery O Collect on Delivery ❑ Collect on Delivery Restricted Delivery 6 4 5 3 3 6 2 0 Restrcted Deovery l01 PS Form 3811, July 2015 PSN 7530-02-000-9053 D Pnonty Mai. Express® O Registered Mahind O Registered Mail Restricted ery Return Receipt for Merchandise o Signature ConfirmationTM • Signature Confirmation Restricted Delivery Domestic Return Receipt for Instructions Page 9 of 18 ATTACHMENT E May 28, 2019 Anadarko 1099 18th Street, Suite 1200 (4th floor Recpt) Denver, Colorado 80202 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc com) We have enclosed a sample Structure Agreement and request the agreement be executed as indicated in paragraph c) of the Agreement Sincerely, Pa, v,),,,,,fr,,,,4 Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 10 of 18 ATTACHMENT E May 28, 2019 DCP Midstream 1324 N 7th Ave Greeley, CO 80631 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) We have enclosed a sample Structure Agreement and request the agreement be executed as indicated in paragraph c) of the Agreement Sincerely, Pat-\ wc.t.u,ly.tsi, Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 11 of 18 ATTACHMENT E May 28, 2019 Weld County Public Works 1111 H Street Greeley, CO 80632 Re Structure Agreement To Whom it May Concern, 1 As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) We have enclosed a sample Structure Agreement and request the agreement be executed as indicated in paragraph c) of the Agreement Sincerely, Pat-\ Wa,..st, Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 12 of 18 ATTACHMENT E May 28, 2019 Sinclair Pipeline Company 7275 S Tucon Way, Suite 250 Englewood, CO 80112 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc com) We have enclosed a sample Structure Agreement and request the agreement be executed as indicated in paragraph c) of the Agreement Sincerely, Pat-\ wed Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 13 of 18 ATTACHMENT E May 28, 2019 Hill & Brush Ditch Co 26442 County Rd 15 Johnstown, CO80534 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) We have enclosed a sample Structure Agreement and request the agreement be executed as indicated in paragraph c) of the Agreement Sincerely, L PJ1/41-\ Wc.,fr),/,d Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 14 of 18 ATTACHMENT E May 28, 2019 Poudre Valley REA PO Box 272550 Fort Collins, CO 80527-2550 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc com) Because your structure is a utility, we request that Poudre Valley REA provide a notarized letter, on utility letterhead, stating that the mining and reclamation activities, as proposed, will have "no negative effect" on your utility (Construction Matenals Rule 6 3 12 and Rule 6 4 19 & HardRock/Metal Mining Rule 6 3 12 and Rule 6 4 20) Sincerely, (fit.., w6.,.Od Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 15 of 18 ATTACHMENT E May 28, 2019 Little Thompson Water District 835 E Hwy 56 Berthoud, CO 80513 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) Because your structure is a utility, we request that Little Thompson Water District provide a notarized letter, on utility letterhead, stating that the mining and reclamation activities, as proposed, will have "no negative effect" on your utility (Construction Matenals Rule 6 3 12 and Rule 6 4 19 & HardRocWMetal Mining Rule 6 3 12 and Rule 6 4 20) Sincerely, Prote-\ wed Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 16 of 18 ATTACHMENT E May 28, 2019 Centurylink 931 14th Street Denver, CO 80202 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) Because your structure is a utility, we request that Centurylink provide a notarized letter, on utility letterhead, stating that the mining and reclamation activities, as proposed, will have "no negative effect" on your utility (Construction Matenals Rule 6 3 12 and Rule 6 4 19 & HardRock/Metal Mining Rule 6 3 12 and Rule 6 4 20) Sincerely, Pat-\ Wo-4.6^^44, Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 17 of 18 ATTACHMENT E May 28, 2019 Public Service Company of Colorado 1800 Lamer St, Suite 1100 Denver CO 80202 Re Structure Agreement To Whom it May Concern, As indicated in the official "Public Notice" enclosed herein, Coulson Excavating co , Inc (Coulson) has applied for a Regular 112 Construction Material Operation Reclamation Permit for the extraction of sand and gravel Weiland, Inc has been contracted by Coulson to complete the engineering and permitting for the project As an owner of a permanent man-made structure(s) within 200 ft of the affected lands, you have been hereby notified of the applicant's intention to mine within 200 ft of said structure (s) Your structure(s) is shown on the enclosed Exhibit C-1- Pre -Mine Plan Map The mine plan specifies a minimum setback distance of 46 ft measured from the from the top the excavation cut, with a mining highwall slope no steeper than 1H 1V The setback distance was developed as the result of a detailed geotechnical slope stability analysis for the site This analysis is available for your review (please email request to pwayland@weilandinc corn) Because your structure is a utility, we request that Public Service Company of Colorado provide a notarized letter, on utility letterhead, stating that the mining and reclamation activities, as proposed, will have "no negative effect" on your utility (Construction Materials Rule 6 3 12 and Rule 6 4 19 & HardRock/Metal Mining Rule 6 3 12 and Rule 6 4 20) Sincerely, Pat-\ wed Peter Wayland President Encl Public Notice, Exhibit C-1 Pre -Mining Plan Map Page 18 of 18 ATTACHMENT F Hand, Inc. Environmental F Engineering ineerincg AMEN MINING RESOURCE REGULAR 112 PERMIT SLOPE STABILITY ANALYSIS Prepared For: Coulson Excavating Co., Inc. 3609 N. County Rd 13 Loveland, CO 80538 Prepared By: Weiland, Inc. PO Box 18087 Boulder, CO 80308 October 15, 2019 PO BOX 18087, Boulder, CO 80308 ph 303-443-0951 ATTACHMENT F Page 1 of 7 Table of Contents 1.0 INTRODUCTION 2 1.1 METHODOLOGY 2 2.0 MODEL INPUT DATA 3 2.1 TEST HOLES 3 2.2 SOIL STRENGTH PARAMETERS 3 2.3 GROUNDWATER 4 3.0 MODEL OUTPUT 5 4.0 DISCUSSION 6 6.0 REFERENCES 7 APPENDIX Subsurface Exploratory Drill Report, Landmark Engineering April 19, 2018 APPENDIX II Table 5.2, Figure 5.5 Duncan & Wright 2005 APPENDIX III GEOSLOPE Model Output - Amen Mining Resource Slope Stability Analysis Weiland. Inc. Environmental & Engineering ATTACHMENT F Page 2 of 7 1.0 INTRODUCTION For the purpose of demonstrating safe mining setbacks from permanent man-made structures at the Amen Mining Resource (AMR), this analysis will utilize standard geotechnical engineering practices and standards to model a "worst case scenario" slope, which for this site will be the slope with the thickest section of granular soils. That setback will then be applied to the entire site in order to safely prevent any damage to any permanent man-made structure not owned by the applicant. 1.1 METHODOLOGY The digital software application GEOSLOPE 2018 R2 is utilized for this study. The program utilizes the Bishop analytical solution to slope failure. The model also uses finite element methods to model pore pressure due to groundwater, which is then utilized in the slope failure solutions. The slope geometry cross section is based on test hole borings at the deepest section with the thickest granular soil profile adjacent to the underground Sinclair Gas pipeline. �nd7inc. environmental & Engineering ATTACHMENT F Page 3 of 7 2.0 MODEL INPUT DATA 2.1 TEST HOLES In April of 2018, test holes TH-1 through TH-32 were completed by Landmark Engineering of Loveland Co. Their report is given in Appendix I. Split spoon samples were gathered during the completion of TH-11 and laboratory analysis was done for samples taken at 3' and 8'. TH-11 occurs adjacent to the Sinclair Gas Pipeline and near the deepest section (TH-1 2) of any proposed excavations. TH-11 laboratory data was therefore used to determine the granular soil strength parameters used for the model input. 2.2 SOIL STRENGTH PARAMETERS Soil strength parameters for the modeled layers have been determined by several methods. For non -cohesive granular soils, the internal angle of friction (0) value has been determined by using graphs and tables developed in Duncan and Wright (2005). The graph gives a relationship between blow count and relative soil densities for a given overburden pressure. The relative density is then related to a table which relates to 0 values for different granular soil types. Soil densities (unit weights) are based on laboratory and published values for similar sites in Colorado. All cohesion values have been set to zero as a conservative approach. Sand and Gravel (GW-GP SW -SP) For the AMR site, the relative density for the sand and gravel layer is determined by the average SPT blow count which is 22. Figure 5.5 from Duncan and Wright (2005) (see Appendix II) gives a relative density of 85 for SPT=22 and overburden pressure = 0.5 kgf/cm2. Applying the relative density to table 5.2, for GW - SW returns an internal angle of friction (0) value of 44.2°. Applying the same relative density for GP - SP yields a 0 value of 40.2°. A 0 value of 39° was used for the gravel layer as a conservative approach. The density was set to 119 pcf. It should be noted that the sand and gravel layer is labeled SP -SW in the GEOSLOPE model. The layer was modeled as 20ft thick, which is the thickest section of granular soil onsite. Overburden Soil (ML) The overburden soils layer was also conservatively modeled as ML with 0 cohesion, and a 0 value of 0° The density was set 103 pcf. It should be noted that the ML layer is actually a cohesive soil with PI = 76 (TH-1 1). The overburden soil layer was set to 7ft thick. Weathered Claystone (CL) A 0 value of value of 31 for clay is taken from Table 5.7 from Duncan and Wright (2005) (See Appendix II), which relates the PI to internal angle of friction where cohesion is set to zero. As a conservative approach, an internal angle of friction value of 26 is used. Weliand. _Inc. Environmental & Engineering ATTACHMENT F Page 4 of 7 The density for weathered claystone is based on laboratory data from other Colorado front range mine sites . Indurated Claystone (BR) The bedrock values are modeled as impenetrable. Table 2.2-1. Soils Strength Data Stratigraphic (in Stratigraphic Layer Order) Density (pcf) Cohesion (psf) Phi (4) Silt and Clay —ML 103 0 0 Sand & Gravel (SP -SW) 119 0 39 Weathered Claystone (CL) 116 0 26 Intact Claystone (BR) impenetrable 2.3 GROUNDWATER A critical parameter contributing to the stability/failure of slopes is the presence of groundwater and more specifically, pore pressure exerted by groundwater within pore space of soils. The model used herein utilizes a separate groundwater modeling unit to determine pore pressures within the soil layers. The pore pressures are then combined with dry densities of the soils to determine the gravitational component of slope failure. As such, the model only requires dry densities of soils to be entered. For the mining scenario, gravel pits are dewatered by allowing the open slopes to gravity drain. This scenario was modeled by setting the pre -mining water table to 7ft below ground surface and the pit slope to 4ft above the pit bottom. The model is first run to establish pore pressures utilizing the finite element and numeric methods to solve the governing equation for groundwater flow. hand. Inc. Environmental & Engineering ATTACHMENT F Page 5 of 7 3.0 MODEL OUTPUT Appendix III gives the GEOSLOPE model input summary and out including graphics and summary tables. The graphic shows all failure surfaces with a factor of safety less than 1.5. The mining setback is measured from the failure surface with a factor of safety equal to 1.5 which occurs furthest to away from the slope. That distance equals 46 ft. Weiland, Inc. Environmental & Engineering ATTACHMENT F Page 6 of 7 4.0 DISCUSSION The stability of gravel pit slopes is primarily driven by the sand and gravel layer and more specifically the value for the internal angle of friction value assigned to slope stability models. In this case, the internal angle of friction value used to model the gravel slope is based on a site specific soil classification and nearby SPT blow counts referenced to a table (Table 5.2 from Duncan and Wright (2005)) developed from empirical data. Furthermore, it is not possible to obtain undisturbed field samples of granular materials for laboratory soil strength testing, therefore the methods employed above grain size analysis and SPT methods are preferable to laboratory soil strength testing (Duncan and Wright (2005)). All other soil strength parameters were based on very conservative values. Considering the conservative approach to the model input parameters, the setback of 46ft from top of slope to the outside edge of any given structure should be considered more than adequate to safely prevent any damage to any permanent man-made structure due to proposed mining excavations at the AMR. eiIand,Jnc. Environmental if Engineering ATTACHMENT F Page 7 of 7 6.0 REFERENCES Duncan, Michael J. and Wright, Stephen G. (2005) Soil Strength and Slope Stability, John Wiley & Sons, Inc. Hoboken, N.J. 309 pages. US Bureau of Reclamation (2014), Design Standard 13 Chapter 7, Embankment Dams 2014 (DS13-7). Aland, Inc. Environmental if Engineering Engineers APPENDIX I ATTACHMENT F Planners Surveyors Geotechnical April 19, 2018 Project No. CEXCA V 18D9A-14- 709 Ken Coulson Coulson Excavation 3609 North county Road 13 Loveland, CO 80538 Dear Ken, Land mark E I Loveland 970-667-6286 Toll Free 866-379-6252 Fax 970-667-6298 www. 3521 West Eisenhower Blvd. Loveland, Colorado 80537 At your request, Landmark Engineering Ltd performed subsurface exploration drilling on the Amen property located at the northeast corner of Weld County Roads 13 and 54. This property is bisected by the Big Thompson River. The purpose of this investigation was to evaluate the thickness of the overburden soil and alluvial sands, gravels and cobbles via 32 test boring locations on the site. As the boring operation advanced, an index of soils relative density and consistency was obtained, in Test Boring No. 's 1, 8 & 11 at various depths, by use of the standard penetration test (SPT), ASTA4 Test D- 1586. The penetration test results, listed on the grain size distribution graphs, are the number of blows required to drive a 2 -inch diameter split -spoon sampler 1 foot into undisturbed soil/gravel using a 140 pound hammer dropped 30 inches. In summary, the overburden soil classified as sandy lean clay/silty clayey sand/sandy silt soils that ranged in thicknesses from 0 to 9 feet while the underlying sand, gravel and cobble deposit thicknesses ranged from 2 to 20.5 feet thick Even though a few SPT and auger samples were obtained and classifrecZ the true quality ofsand and gravel deposit was not evaluated at this time. If necessary, it is recommended that test pits be dug to collect sizeable bulk samples containing large gravel and cobble material that was omitted from our test boring samples. Please find enclosed the Test Hole Site Plan, Boring Summary Sheet and soil classification/SPT test results. If you have any questions please call our office. Best Regards, Landmark Engineering Ltd. Larry tiller, PG Enclosures APPENDIX I ATTACHMENT F REVISIONS Weiland. Inc. Environmental & Engineering PO BON Mon AOUWER CO 80300 Ph J09.MJ 36EI n„ Joa•44J-,i7. AMEN PIT USE BY SPECIAL REVIEW WELD COUNTY, CO wra.corow COULSON EXCAVATING CO., INC. �CAt! 1°4'200' • TEST HOLE SITE MAP SITE PLAN.DWG at' CTW beacon PFW own 04/04/2018 rate New REV 141 1 OF 1 APPENDIX I ATTACHMENT F 4/17/2018 BORING SUMMARY SHEET k.v''` ��; �£•RING,No "' t _ {a.+4e';,/�, ,ti .' .s;,3r',.7� : rHICKNE5S F oV RIURIEN •� .;,}'-r;S-.u;-•.'".t •��',�;r-r,t+i:;S�rJ PE'TH TO SH'LE eR®CK ..�?. :.:_9y„J 5 NR V L HICK E55:� 'h;Yt��,'4'.c �W Bl 6' 20' .,GR 14' 5' B2 5 5' 21' 15 5' 5' B3 6' 22 5' 16 5' 4' 54 5 5' 21' 15 5' 5 5' B5 2' 22 5' 20 5' 4 5' 86 5 5' 23' 17 5' 5' B7 8' 22 5' 14 5' 6' B8 6 5' 25' _ 18 5' 6' 89 5' 20' 15' 6 5' B10 7 5' _ 24' 16 5 6' B11 4 5' 12 5 8' 5' B12 5' 25' 20' 5' B13 1 5' 12 5' 11' 5 5' B14 4 5' 23' 18 5' 6' B15 5 5' 15' 9 5' 6' B16 3' 12' 9' 7' B17 1' 9' 8' 7' B18 6 5' _ 25' 18 5' 7' B19 _ 6 5' _ 23' 16 5' 6 5' B20 8' 19 5' 11 5' 7' 821 9' 18' 9' 8 5' B22 5 5' 15' 9 5' 6 5' B23 4' 16 5' 12 5' 5' B24 6 5' 9' 2 5' 5 5' B25 0' 13 5' 13 5' 3' B26 8' 10' 2' 5' 827 5' 15' 10' 6' B28 3 5' 15' 11 5' 6' B29 5' 14' 9' 7' 630 3 5' 15' 11 5' 6' 831 5 5' 9' ' 3 5' 8' B32 2' 10 5' 8 5' 5' APPENDIX I A i i AGHHnntN i F GRAIN SIZE DISTRIBUTION ASTM SYSTEM GRAVEL SAND SILT & CLAY BOULDERS COBBLES COARSE FINE COARSE MEDIUM FINE 'inn - - O U S STANDARD - - ` Fl N M -- M SIEVE - d O 0 O Z SIZES N d O O Z Z Z 0 0 0 N O O Z Z 0 N O Z RCENT FINER CO to 3 0 0 0 0 0 c I I I l�I(\� �L I I If I I I I I � 1 1 I ' I I 1 I I1 I 1 I II I I I CL 30 I I 1 I 20 I I 1 1 10 I I II I I I I 0L i<_< III i II O to N 0 In 0 O In O 1` Lr) enN d 0 u'1 .-O O 0 - in M O N d N or" u7 m d O O 0 0 0 0 0 GRAIN DIAMETER, MM SAMPLE I D. CLASSIFICATION -#200 LL PL PI SPTBLOWS/FT BLOWS/FT TH-1 © 3' SANDY LEAN CLAY (CL) 69 5 40 24 16 4/1 0 TH-1 © 9' *SAND WITH SILT & GRAVEL (SW/SP-SM) 9 0 NV NP NP 34/1 ti CLASSIFICATION BASED ON MINUS 1-1/2" MATERIAL THAT WAS OBTAINED FROM SPT SAMPLE OR AUGER. GRADATION DOES NOT INCLUDE LARGER GRAVEL OR COBBLES. alt �`� + CLIENT: COULSON EXCAVATING PROJECT: CEXCAV-18D9A-14-709 Engineering - Engineers Planners Surveyors Architects Geotechnical (970) 667-6266. Toll Freer --866-379 6252 •F x (970))667 6296 www landrnarkltd corn 4/19/2018 This documei s „n insiru,^ent of processional service of Landmark Engineering L`d (LEL) Londmcik chali to Ire nudes eelen, per-iittea oy lay be neld harmless and releosec of any damage liability or cost arising or alleged ng out Lf an` nodlfication cnange or lease of this document by othars GRAPH 1 APPENDIX I 04/19/2018, —9 59om, milled F \CEO\GradotIon ASTM Chart\TCA Bldg E GRAIN SIZE DISTRIBUTION ASTM SYSTEM BOULDERS GRAVEL SAND COBBLES COARSE FINE COARSE MEDIUM FINE SILT & CLAY net U S STANDARD �� . >iz SIEVE � o SIZES, 0 0 0 0 o 0 0 z z z z z z O N 0 :RCENT FINER D 0 0 0 00 CO 0 rInN') I i III III I I I 1 t 1 1 I` I I I III III IIII IIII II I II illI III I I II III (II I I I IIII I 11 I L.LJri 1 30 I I I I III 20 r III IIII 1 11 10 I I I If lilt Ill I H I ° I _I 1 I I I I I in M N 8112 n .-o ON ^ or, rn N .- * DO O O O O O O O GRAIN DIAMETER, MM SAMPLE I.D CLASSIFICATION -#200 LL PL PI SPT BLOWS/FT ® TH-8 ® 3' SILTY CLAYEY SAND (SC-SM) 45 0 27 21 6 17/1 ® TH-8 © 8' *SAND WITH SILT & GRAVEL (SW/SP-SM) 10 6 NV NP NP 16/1 * CLASSIFICATION BASED ON MINUS 1-1/2N MATERIAL THAT WAS OBTAINED FROM SPT SAMPLE OR AUGER. GRADATION DOES NOT INCLUDE LARGER GRAVEL OR COBBLES. ,, AO, i1';I -, Lain- ,mieltilic CLIENT- COULSON EXCAVATING PROJECT CEXCAV-18D9A-14-709 Engineering Engineers Planners Surveyors Architects Geotechrucal 3521 West Eisenhower Blvd Loveland Colorado 80537 (970) 867 6286 • Toll Frco 7-866 379 6252 • Fax (970) 667-6298 www ler,dmarkltd cam 4/19/2018 I This cocurrent Is on instrument of profess encl serace o Landmark Engineering Ltd (l E L ) _andmcrk shall to trio fu'Iest extent peon ttee b� la, be held formless and re eased o any damage Iruhlll , or cost onlsing or a Isgedls arising eut or -Inv modl`IcJt,on cno roe or reuse or tf is docJ nen by others GRAPH 2 APPENDIX I E 01 0.1 0 0 v U 6 18 C 0 0 V 0 I. I?WelIVIGItlI r GRAIN SIZE DISTRIBUTION ASTM SYSTEM GRAVEL SAND SILT & CLAY BOULDERS COBBLES COARSE FINE COARSE MEDIUM FINE nn N - - t0 U S STANDARD c \ n N r] \\ M SIEVE O O O Z SIZES N O O O Z Z Z �� o O .- N O O Z Z O or O Z RCENT FINER CJi co J CD CO C D O O O O O C I I I I I I I I II II I I I I I l -----I II 1 I I jl1 II I II I I �, II I I I CI- TV 30 I I III III 20 I II I I I 10 I I II I I 0 II o In 0 Po N o In a, o u) .--O O O .- in rn u- Or- '� ,n rn n xi — O 0 0 N ,- xf O O O O O GRAIN DIAMETER, MM SAMPLE I D CLASSIFICATION -#200 LL PL PI SPT BLOWS/FT A TH-11 @ 3' SANDY SILT (ML) 52 0 31 24 76 12/1 ' O TH-11 © 8' *GRAVEL WITH SILT & SAND (GW/GP-GM) 5 2 NV NP NP 22/1 * CLASSIFICATION BASED ON MINUS 1-1/2" MATERIAL THAT WAS OBTAINED FROM SPT SAMPLE OR AUGER. GRADATION DOES NOT INCLUDE LARGER GRAVEL OR COBBLES. � Olt ',"11!, Land t .i i CLIENT. COULSON EXCAVATING PROJECT. CEXCAV-18D9A-14-709 ' Engfneertng _ Engineers Planners Surveyors Architects Geotechnical 3521 West Eisenhower Blvd Loveland Colorado 60537 (970) 667-6286. Toll Free 1 806-379 6252 . Fax (970) 667 6288 www landme.kltd corn 4/19/2018 This document is an inst-umenc of professional service o- Landmark Engineering Ltd (L E i_ ) Lanarr a k snail to Ins fullest extent permitted by low be nerd harmless and released a any damage hub lit), or ,otit arising or allegedly arsing out of any modif rot nit change or reuse of th s document by others GRAPH 3 r APPENDIX II 40 5 SHEAR STRENGTHS OF SOIL AND MUN 1IA HMEN'1'EF Recapitulation • The drained shear strengths of sands, gravels, and rockfill materials can be expressed as s = o' tan • Values of cp' for these materials are controlled by density, gradation, and confining pressure • The variation of ¢' with confining pressure can be represented by cb' = 4o — Ocp log10 where o-3 is the confining pressure and pa is at- mospheric pressure • When large particles are removed to prepare spec- imens for laboratory tests, the test specimens should be prepared at the same relative density as the original material, not the same void ratio • Values of 4)' for granular materials can be esti- mated based on the Unified Soil Classification, relative density, and confining pressure • Values of 4' for granular materials can also be estimated based on results of standard penetration tests or cone penetration tests Table 5.2 Values of 4 and O4 for Sands and Gravels Unified classification Standard Relative Proctor density, 40` AO RC" (%) Drb (%) (deg) (deg) GW, SW GP, SP SM 105 100 46 10 100 75 43 8 95 50 40 6 90 25 37 4 105 100 42 9 100 75 39 7 95 50 36 5 90 25 33 3 100 36 8 95 34 6 90 32 4 85 30 2 Source Wong and Duncan (1974) °RC = relative compaction = yd/ yd max x 100% bDr = (emax — e)l emax — em,,,) x 100% `ch = - 04 login o- /p° where p° is atmospheric pressure Vertical effective stress -6;,0- (kgf/cm2) Standard penetration blow count - N 10 20 30 40 50 60 70 80 Figure 5 5 Relationship among SPT blow count, overburden pressure, and relative density for sands (After Gibbs and Holtz, 1957, and U S Dept Interior, 1974) SILTS The shear strength of silts in terms of effective stress can be expressed by the Mohr —Coulomb strength cri- terion as s = c' +o' tan 4/ (5 5) where s is the shear strength, c' the effective stress cohesion intercept, and 0' the effective stress angle of internal friction The behavior of silts has not been studied as exten- sively and is not as well understood as the behavior of granular materials or clays Although the strengths of silts are governed by the same principles as the strengths of other soils, the range of their behavior is wide, and sufficient data are not available to anticipate or estimate their properties with the same degree of reliability as is possible in the case of granular soils or clays Silts encompass a broad range of behavior, from be- havior that is very similar to the behavior of fine sands APPENDIX II ATTACHMENT F CLAYS 49 the variation of s„/N with Plasticity Index, can be used to estimate undrained strength based on SPT blow count In Figure 5 16 the value of su is expressed in kgf/cm2 (1 0 kgf/cm2 is equal to 98 kPa, or 1 0 ton per square foot) The Standard Penetration Test is not a sensitive indicator of the undrained strength of clays, and it is not surprising that there is considerable scatter in the correlation shown in Figure 5 16 Typical Peak Friction Angles for Intact Clays Tests to measure peak drained strengths of clays in- clude drained direct shear tests and tnaxial tests with pore pressure measurements to determine c' and cb' The tests should be performed on undisturbed test specimens Typical values of 4i' for normally consoli- dated clays are given in Table 5 7 Strength envelopes for normally consolidated clays go through the origin of stresses, and c' = 0 for these materials Stiff -Fissured Clays Heavily overconsolidated clays are usually stiff, and they usually contain fissures The term stiff -fissured clays is often used to describe them Terzaghi (1936) pointed out what has since been confirmed by many others —the strengths that can be mobilized in stiff - fissured clays in the field are less than the strength of the same material measured in the laboratory Skempton (1964, 1970, 1977, 1985), Bjerrum (1967), and others have shown that this discrepancy is due to swelling and softening that occurs in the field over long periods of time but does not occur in the laboratory within the period of time used to perform laboratory strength tests A related factor is that fis- sures, which have an important effect on the strength of the clay in the field, are not properly represented in laboratory samples unless the test specimens are large Table 5.7 Typical Values of Peak Friction Angle (0') for Normally Consolidated Clays" Plasticity index 4' (deg) 10 20 30 40 60 80 33 ± 5 31 ± 5 29 ± 5 27 ± 5 24 ± 5 22 ± 5 Source Data from Bjerrum and Simons (1960) °c' = 0 for these materials enough to include a significant number of fissures Un- less the specimen size is several times the average fis- sure spacing, both drained and undrained strengths measured in laboratory tests will be too high Peak, fully softened, and residual strengths of stiff - fissured clays. Skempton (1964, 1970, 1977, 1985) investigated a number of slope failures in the stiff - fissured London clay and developed procedures for evaluating the drained strengths of stiff -fissured clays that have been widely accepted Figure 5 17 shows stress —displacement curves and strength envelopes for drained direct shear tests on stiff -fissured clays The undisturbed peak strength is the strength of undis- turbed test specimens from the field The magnitude of the cohesion intercept (c') depends on the size of the test specimens Generally, the larger the test speci- mens, the smaller the value of c' As displacement con- tinues beyond the peak, reached at Ox = 0 1 to 0 25 in (3 to 6 mm), the shearing resistance decreases At displacements of 10 in (250 mm) or so, the shearing resistance decreases to a residual value In clays with- out coarse particles, the decline to residual strength is accompanied by formation of a slickensided surface along the shear plane If the same clay is remolded, mixed with enough water to raise its water content to the liquid limit, con- solidated in the shear box, and then tested, its peak strength will be lower than the undisturbed peak The strength after remolding and reconsolidating is shown by the NC (normally consolidated) stress — displacement curve and shear strength envelope The peak is less pronounced, and the NC strength envelope passes through the origin, with c' equal to zero As sheanng displacement increases, the shearing resis- tance decreases to the same residual value as in the test on the undisturbed test specimen The displace- ment required to reach the residual shearing resistance is again about 10 in (250 mm) Studies by Terzaghi (1936), Henkel (1957), Skemp- ton (1964), Bjerrum (1967), and others have shown that factors of safety calculated using undisturbed peak strengths for slopes in stiff -fissured clays are larger than unity for slopes that have failed It is clear, there- fore, that laboratory tests on undisturbed test speci- mens do not result in strengths that can be used to evaluate the stability of slopes in the field Skempton (1970) suggested that this discrepancy is due to the fact that more swelling and softening occurs in the field than in the laboratory He showed that the NC peak strength, also called the fully softened strength, corresponds to strengths back -calculated from first-time slides, slides that occur where there is no preexisting slickensided failure surface Skempton also ATTACHMENT F APPENDIX III Amen Mining Resource Slope Stability Analysis Report generated using GeoStudio 2018 R2. Copyright © 1991-2018 GEOSLOPE International Ltd. File Information File Version: 9.01 Created By: Weiland. Inc Last Edited By: Weiland. Inc. Revision Number: 16 Date: 10/10/2018 Time: 11:34:43 AM Tool Version: 9.1.1.16749 File Name: SINCLAIR.gsz Directory: E:\Data\Gravel Projects\Amen\DRMS\Slope Stability\ Last Solved Date: 10/10/2018 Last Solved Time: 11:34:48 AM Project Settings Unit System: U.S. Customary Units Analysis Settings Sinclair Gas Line Kind: StOPE/W Method: Bishop Settings PWP Conditions from: Other GeoStudio Analysis Result input file: Steady -State Seepage [(last)] Unit Weight of Water: 62.430189 pd Slip Surface Direction of movement: Left to Right Use Passive Mode: No Slip Surface Option: Grid and Radius Critical slip surfaces saved: 1 Optimize Critical Slip Surface Location: Nn Tension Crack Option: (none) Distribution F of S Calculation Option: Constant Advanced Geometry Settings Minimum Slip Surface Depth: J.1 ft Number of Slices: 30 Factor of Safety Convergence Settings Maximum Number of Iterations: 100 Tolerable difference in F of 5: 0.001 Materials ML Model: Mohr -Coulomb Unit Weight: 103 pcf Cohesion': 0 psf Phi': 0 Phi -B: 0 ' Constant Unit Wt. Above Water Table: 103 pcf SP -SW Model: Mohr -Coulomb Unit Weight: 119 pcf Cohesion': 0 psf Phi': 39 ° Phi -B: 0 ° Constant Unit Wt. Above Water Table: 116 pcf Weather Claystone Model: Mohr -Coulomb Unit Weight: 116 pcf Cohesion': 0 psf Phi': 26 Phi -B: 0 Indurated Claystone Model: Bedrock (Impenetrable) SW -SP SAT Model: Mohr -Coulomb Unit Weight: 119 pcf Cohesion': 0 psf Phi': 39 ° Phi -B: 0 ' GeoSlope Output page 1of5 ATTACHMENT F APPENDIX III Slip Surface Grid Upper Left: (3,161,360, 1,382,800) ft Lower Left: (3,161,360, 1,382,759) ft Lower Right: (3,161,417, 1,382,759) ft Grid Horizontal Increment: 20 Grid Vertical Increment: 20 Slip Surface Radius Upper Left Coordinate: (3,161,313, 1,382,724) ft Upper Right Coordinate: (3,161,394, 1,382,725) ft Lower Left Coordinate: (3,161,313, 1,382,692) ft Lower Right Coordinate: (3,161,394, 1,382,692) ft Number of Increments: 20 Use Left Projection: No Left Projection Angle: 135 ' Use Right Projection: No Right Projection Angle: 45 Slip Surface Limits Left Coordinate: (3.161,166.7, 1,382,693.9) ft Right Coordinate: (3,161,416.8, 1,382,696.4) ft Points X Y Point 1 3,161,366 ft 1,382,696.7 ft Point 2 3,161,340.5 ft 1,382,722.3 ft Point 3 3,161,346.4 ft 1,382,716.3 ft Point 4 3,161,346.1 ft 1,382,716.3 ft Point 5 3,161,329.8 ft 1,382,716.3 ft Point 6 3,161,313.5 ft 1,382,716.3 ft Point 7 3,161,303.8 ft 1,382,716.3 ft Point 8 3,161,294.5 ft 1,382,716.3 ft Point 9 3,161,289.4 ft 1,382,716.3 ft Point 10 3,161,277.5 ft 1,382,716.3 ft Point 11 3,161,265.1 ft 1,382,716.3 ft Point 12 3,161,253.1 ft 1,382,716.3 ft Point 13 3,161,238.9 ft 1,382,716.3 ft Point 14 3,161,224.1 ft 1,382,716.3 ft Point 15 3,161,212.9 ft 1,382,716.3 ft Point 16 4 3,161,194.8 ft 1,382,716.4 ft Point 17 3,161,176.5 ft 1,382,716.4 ft Point 18 3,161,166.8 ft 1,382,716.4 ft Point 19 3,161,166.8 ft 1,382,723.4 ft Point 20 3,161,211.6 ft 1,382,723.3 ft Point 21 3,161,261.8 ft 1,382,722.9 ft Point 22 3,161,294.6 ft 1,382,722.7 ft Point 23 , 3,161,322.7 ft 1,382,722.4 ft Point 24 3,161,166.7 ft 1,382,693.9 ft Point 25 3,161,166.8 ft 1,382,697.9 ft Point 26 3,161,172.8 ft 1,382,697.9 ft Point 27 3,161,192.5 ft 1,382,697.7 ft Point 28 3,161,210.6 ft 1,382,697.6 ft Point 29 3,161,238.4 ft 1,382,697.5 ft Point 30 3,161,257.9 ft 1,382,697.3 ft Point 31 3,161,274.1 ft 1,382,697.3 ft Point 32 3,161,286.9 ft 1,382,697.2 ft Point 33 3,161,293.3 ft 1,382,697.2 ft Point 34 3,161,2975 ft 1,382,697.1 ft Point 35 3,161,302.8 ft 1,382,697.1 ft Point 36 3,161,304.5 ft 1,382,697.1 ft Point 37 3,161,307.2 ft 1,382,697.1 ft Point 38 3,161,310.1 ft 1,382,697 ft Point 39 3,161,313.8 ft 1,382,697 ft Point 40 3,161,316.6 ft 1,332,697 ft Point 41 3,161,319.9 ft 1,382,697 ft Point 42 3,161,332.3 ft 1,382,696.9 ft Point 43 3,161,339.2 ft 1,382,696.9 ft Point 44 3,161,346.3 ft 1,382,696.9 ft Point 45 3,161,357 ft 1,382,696.8 ft Point 46 3,161,3625 ft 1,382,696.8 ft Point 47 3,161,372.4 ft 1,382,696.7 ft Point 48 3,161,384.5 ft 1,382,696.6 ft Point 49 3,161,392.2 ft 1,382,696.5 ft Point 50 3,161,401.9 ft 1,382,696.5 ft Point 51 3,161,411.5 ft 1,382,696.4 ft Point 52 3,161,416.8 ft 1,382,696.4 ft Point 53 3,161,416.7 ft 1,382,692.4 ft GeoSlope Output page 2 of 5 ATTACHMENT F APPENDIX III Point 3,161,411.5 1,382,692.4 54 ft ft Point 3,161,401.8 1,382,692.5 55 ft ft Point 3,161, 392.2 1,382,692.5 56 ft ft Point 3,161,384.4 1,382,692.6 57 ft ft Point 3,161,3721 1,382,692.7 58 ft ft Point 3,161,362.5 1,382,692.8 59 ft ft Point 3,161,356.9 1,382,692.8 60 ft ft Point 3,161,346.3 1,382,692.9 61 ft ft Point 3,161,339.2 1,382,692.9 62 ft ft Point 3,161, 332.3 1, 382, 692.9 63 ft ft Point 3,161, 319.9 64 ft 1,382,693 ft Point 3,161,316.6 65 ft 1,382,693 ft Point 3,161,313.7 66 ft 1,382,693 ft Point 3,161,310.1 67 ft 1,382,693 ft Point 3,161, 307 1 1, 382, 693.1 68 ft ft Point 3,161,304.5 1,382,693.1 69 ft ft Point 3,161,302.8 1,382,693.1 70 ft ft Point 3,161,297 5 1, 382, 693.1 71 ft ft Point 3,161,293.3 1,382,693.2 72 ft ft Point 3,161,286.9 1,382,693.2 73 ft ft Point 1,382,693.3 74 3,161,274 ft ft Point 3,161,257.9 1,382,693.3 75 ft ft Point 3,161,238.4 1,382,693.5 76 ft ft Point 3,161,210.5 1,382,693.6 77 ft ft Point 3,161,192.4 1,382,693.7 78 ft ft Point 3,161,172.8 1,382,693.9 79 ft ft Point 3,161,166.7 1,382,687.9 80 ft ft Point 3,161,416.7 1,382,686.4 81 ft ft Point 3,161,411.4 1,382,686.4 82 ft ft Point 3,161,401.8 1,382,686.5 83 ft ft Point 3,161,392.2 1,382,686.5 84 ft ft Point 3,161, 384.4 1, 382, 686.6 85 ft ft Point 3,161,372.3 1,382,686.7 86 ft ft Point 3,161,362.5 1,382,686.8 87 ft ft Point 3,161,356.9 1,382,686.8 88 ft ft Point 3,161,346.3 1,382,686.9 89 ft ft Point 3,161,339.2 1,382,686.9 90 ft ft Point 3,161, 332.2 1, 382, 686.9 91 ft ft Point 92 3,161, 319.9 ft 1,382,687 ft Point 93 3,161,316.5 ft 1,382,687 ft Point 3,161, 313.7 94 ft 1,382,687 ft Point 95 3,161,310 ft 1,382,687.1 ft Point 3.161, 307.1 1,382,687.1 96 ft ft GeoSlope Output page 3 of 5 ATTACHMENT F APPENDIX III Point 97 3,161,304.4 ft 1,382,687.1 ft Point 98 3,161,302.8 ft 1,382,687 1 ft Point 3,161,297.4 1,382,687.1 99 ft ft Point 3,161, 293.3 1,382,687 2 100 ft ft Point 3,161,286.8 1,382,687.2 101 ft ft Point 3,161,274 1,382,687.3 102 ft ft Point 3,161,257.8 1,382,687.3 103 ft ft Point 3,161,238.4 1,382,687.5 104 ft ft Point 3,161,210.5 1,382,687.6 105 ft ft Point 3,161,192.4 1,382,687.7 106 ft ft Point 3,161,172.7 1,382,687.9 107 ft ft Point 3,161,280.6 1,382,716.3 108 ft ft Point 3,161, 296.2 1, 382, 714.9 109 ft ft Point 3,161,314.6 1, 382, 711.6 110 ft ft Point 3,161,333.4 1,382,708 111 ft ft Point 3,161,362.1 1,382,700.7 112 ft ft Point 3,161,365.9 1,382,696.8 113 ft ft Regions Material Points Region 1 ML 2,23.22,21,20,19,18,17.16,15,14,13,12,11,10,108,9,8,7,6,5,4,3 Region 2 Weather Claystone 24 79 78 77,76,75.74,73,72,71,70,69.68.67,66.65.64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48.47,113,1,46,45.44,43,42,41,40,39,38.37,36,35,3 Region 3 Indurated Cl ayston e 80 24.79,78,77,76.75,74,73,72,71.70,69,68.67,66.65,64,63,62,61,60,59,58,57,56,55,54,53,81,82,83,84,85,86,87,88,89,90,91.92,93,94,95,96,97,98,99,1( Region 4 SP -SW 3.4,5,6,7,8,9,108,109,110,111,112 Region 5 SW -SP SAT 111,110,109,108,10.11,12.13.14,15,16,17,18,25.26.27,28,29,30,31.32,33,34,35,36,37.38,39.40,41,42.43.44,45,46.1,113,112 Slip Results Slip Surfaces Analysed: 2828 of 9261 converged Current Slip Surface Slip Surface: 3.990 Factor of Safety: 1.50 Volume: 1,282.8726 ft3 Weight: 147,612.44 lbf Resisting Moment: 5,403,818.2 Ibf-ft Activating Moment: 3,610,908.8 Ibf-ft Slip Rank: 1,672 of 9,261 slip surfaces Exit: ' 3,161,387.5, 1,382,696.6) ft Entry: (3,161,294.4, 1,382,722.7) ft Radius: 85.45 ft Center: (3,161,360, 1,382,777.4) ft Slip Slices X Y PWP Base Normal Stress Frictional Strength Cohesive Strength Suction Strength Base Material Slice 1 3,161,294.5 ft 1,382,722.6 ft 0 psf 12.660799 psf 0 psf 0 psf 0 psf ML Slice 2 3,161.296 ft 1,382,720.8 ft 0 psf 190.02815 psf 0 psf 0 psf 0 psf ML Slice 3 3,161,298.9 ft 1,382,717.8 ft 0 psf 503.82549 psf 0 psf 0 psf 0 psf ML Slice 4 3,161,301.7 ft 1.382,715 ft 0 psf 537.62034 psf 435.35637 psf 0 psf 0 psf SP -SW Slice 5 3,161,303.5 ft 1,382,713.4 ft 13.613321 psf 680.31738 psf 539.8863 psf 0 psf 0 psf i SW -SP SAT Slice 6 3,161,305.4 ft 1,382,711.7 ft 91.012789 psf 849.34403 psf 614.08453 psf 0 psf 0 psf SW -SP SAT Slice 7 3,161,308.6 ft 1,382,709.2 ft 212.35011 psf 1.121.2393 psf 736.00393 psf 0 psf 0 psf SW -SP SAT Slice 8 3,161,311.9 ft 1,382,706.9 ft 318.26399 psf psf 854 94412 psf 0 psf 0 psf SW -SP SAT Slice 9 3,161,314 ft 1,382,705.4 ft 11,374.0321 383.15332 psf 1,536.0501 psf 933.59742 psf 0 psf 0 psf SW -SP SAT Slice 10 3,161,316 ft 1,382,704.2 ft 433.3315 psf 1,668.2016 psf 999.97809 psf 0 psf 0 psf SW -SP SAT Slice 11 3,161,318.7 ft 1,382,702.7 ft 499.25184 psf 1,848.9165 psf 1,092.9369 psf 0 psf 0 psf SW -SP SAT Slice 12 3,161,321.4 ft 1,382,701.3 ft 556.61649 psf 2.018.8573 psf 1,184.0992 psf 0 psf 0 psf SW -SP SAT Slice 13 3,161,324.5 ft 1,382,699.8 ft 612.7242 psf 2,202.4353 psf 1,287.3227 psf 0 psf 0 psf SW -SP SAT Slice 14 3,161,328 ft 1,382,698.2 ft 663.10904 psf 2,396.8873 psf 1,403.9859 psf 0 psf 0 psf SW -SP SAT Slice 15 3,161,330.6 ft 1,382,697.2 ft 691.36078 psf 2,531.0916 psf 1,489 7846 psf 0 psf 0 psf SW -SP SAT GeoSlope Output page 4 of 5 ATTACHMENT F APPENDIX III Slice 16 3,161,331.9 ft 1,382,696.8 ft 702.37269 psf 2,718.8169 psf 983.48557 psf 0 psf 0 psf Weather Claystone Slice 17 3,161,332.8 ft 1,382,696.4 ft 709.92224 psf 2,761.5631 psf 1,000.6521 psf 0 psf 0 psf Weather Claystone Slice 3,161,334.8 1,382,695.8 721.96098 Weather 18 ft ft psf 2,844.5751 psf 1,035.2681 psf 0 psf 0 psf Claystone Slice 3,161.337.8 1,382,695 ft 734.35348 2,957.698 1,084.3976 Weather psf psf 0 psf 0 psf Claystone Slice 20 3,161,339.9 ft 1,382,694.4 ft 738.76176 psf 3,034 .0695 psf 1,119.4964 psf 0 psf 0 psf Weather ys CIa tone Slice 3,161,341.9 1,382,694 ft 736.77854 2,964.672 1,086.6162 0 Weather psf psf psf 0 psf Claystone Slice 22 3,161, 344.7 ft 1,382,693.4 ft 729.88683 psf 2,772 3654 psf 996.18335 psf 0 psf 0 psf Weather Claystone Slice 23 3,161,346.2 ft 1,382,693.1 ft 724.57087 psf 2,664.4034 psf 946.11952 psf 0 psf 0 psf Weather Claystone Slice 24 3,161,346.3 ft 1,382,693.1 ft 723.73439 psf 2,653.2286 psf 941.0772 psf 0 psf 0 psf Weather Claystone Slice 3,161,347.1 1,382,693 ft 717.98036 2,590.7555 913.41345 0 0 Weather psf psf psf psf Claystone Slice 26 3,161, 349.3 ft 1,382,692.9 ft 686.33132 psf 2,433.2804 psf 852.044 psf 0 psf 0 psf Weather Claystone Slice 27 3.161, 352.3 ft 1,382,692.8 ft 633.86766 psf 2,075.9399 psf 703.34562 psf 0 psf 0 psf Weather Claystone Slice 3,161, 355.4 1, 382, 692.8 Weather 28 ft ft 581.404 psf 1, 718.2894 psf 554.49606 psf 0 psf 0 psf Claystone Slice 29 3,161,358.2 ft 1,382,692.8 ft 516.43137 psf 1,385.9282 psf 424.08195 psf 0 psf 0 psf Weather ys CIa tone Slice 30 3,161, 360.8 ft 1, 382, 692.8 ft 440.41168 psf 1,078.3873 psf 311.16151 psf 0 psf 0 psf Weather Claystone Slice 31 3,161,362.3 ft 1,382,692.8 ft 397.28513 psf 903.67368 psf 246.9822 psf 0 psf 0 psf Weather ys CIa tone Slice 32 3,161, 364.2 ft 1,382,692.8 ft 363.49477 psf 672.75354 psf 150.83558 psf 0 psf 0 psf Weather Claystone Slice 33 3,161,367.2 ft 1,382,692.8 ft 314.11695 psf 466.73345 psf 74.436041 psf 0 psf 0 psf Weather Claystone Slice 34 3,161,369.8 ft 1.382,692.7 ft 272.06852 psf 465.0619 psf 94.129161 psf 0 psf 0 psf Weather Claystone Slice 3,161,371.7 1,382,692.8 Weather 35 ft ft 234.0406 psf 462.92935 psf 111.6365 psf 0 psf 0 psf Claystone Slice 36 3,161,373.9 ft 1,382,693.2 ft 208.07617 psf 421.33887 psf 104.01517 psf 0 psf 0 psf Weather Claystone Slice 3,161,376.9 1,382,693.7 Weather 37 ft ft 181.1719 psf 353.91064 psf 84.250311 psf 0 psf 0 psf Claystone Slice 38 3,161,380 ft 1,382,694.4 ft 141.09521 psf 272.24713 psf 63.967065 psf 0 psf 0 psf Weather Claystone Slice 39 3,161,383 ft 1,382,695.2 ft 90.262883 psf 175.67685 psf 41.659175 psf 0 psf 0 psf Weather Claystone Slice 40 3,161,386 ft 1, 382,696.1 ft 31.572308 psf 61.876166 psf 14.780179 psf 0 psf 0 psf Weather Claystone ys GeoSlope Output page 5 of 5 ATTACHMENT F APPENDIX III ;1 l \ CC I IL \----t I 19 18 17 Water Pressure Head lit -2-0ft l0-2ft [ 2-4ft L; 4-6ft Li 6-8ft ❑8-10ft ❑ 10-12ft 12 - 14 ft (__.114-16 ft Li 16- 18ft ❑ 18-20ft x]20-22ft ■ 22-24 ft 27 • 78 106 20 Factor of Safety • 0.50 - 0.60 • 0.60 - 0.70 ❑ 0.70 - 0.80 • 0.80 - 0.90 ■ 0.90-1.00 ■ 1.00-1.10 ■ 1.10 - 1.20 ■ 1.20 - 1.30 • 1.30 - 1.40 ■ ≥ 1.40 H Els 15 28a 21 22 46 ft 23 low 2 105 104 103 102 101 100 99 9837 96 95 94 93 92 91 90 89 • i ii i i i i i i a 1 1' l i t. 11/4 ill ft. ‘. Winilinial In % I It ....aresin. \ ��ii��mms- No `_ __INNI v . 'a•_�_ali�" mum / `ate_-��/- N l 1 1 Slope 47 88 87 86 48 49 85 84 r 0 50 83 51 52 82 81 • • FIGURE 1. GRAPHICAL CROSS SECTION OF MODEL INPUT & OUTPUT GeoSlope Output page 6 of 5 Hello