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Home My WebLink About20110199.tiff 1 STORMWATER POLLUTION PREVENTION PLAN (SWPPP) 1 t 1 i ' For: Konig Ag Co. 37231 Highway 14 Briggsdale, CO 80611 • ' Prepared by: Baseline Corporation Chris Rundall ' 1536 Cole Blvd., Suite 220 Golden, CO 80401 303-940-9966 (phone) 303-940-9959 (fax) October 18, 2010 I 1 • t2011-0199 1 • STORMWATER POLLUTION PREVENTION PLAN (SWPPP) For: Konig Borrow Pit County Road 81 & County Road 120 Weld County, CO Operator: Konig Ag Co. 37231 Highway 14 Briggsdale, CO 80611 Prepared by: SELINE • Baseline Corporation ' • Chris Rundall 1536 Cole Blvd., Suite 220 Golden, CO 80401 303-940-9966 (phone) 303-940-9959 (fax) Stormwater Manager and SWPPP Contact(s): Excavator ' Konig Ag Co. 37231 Highway 14 Briggsdale, CO 80611 General Contractor Konig Ag Co. 37231 Highway 14 Briggsdale, CO 80611 ' Estimated Project Construction Timeline: Start of Construction: 12/15/2010 ' Completion of Construction: 12/15/2020 • I 1 • ' Signature Block I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly 1 gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief,true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. 1 Name: Title: 1 Signature: Date: Name: Title: Signature: Date: Name: Title: Signature: Date: • Konig Borrow Pit Storm Water Pollution Prevention Plan I I . ITable of Contents ISECTION 1. INTRODUCTION 1 I1.1. Purpose 1 1.2. Site Legal Description and Location 1 ISECTION 2. SITE ASSESSMENT AND PROJECT INFORMATION 3 2.1. Soils, Slopes, Drainage Patterns, and Vegetation 3 I2.2. Receiving Waters 3 I2.3. Site Features and Sensitive Areas to be Protected 3 2.4. Potential Sources of Pollution 3 I2.5. Historic Preservation 3 2.6. Threatened and Endangered Species 3 I • 2.7. Existing and Proposed Conditions Maps 4 2.8. Project Information 4 ISECTION 3. PROJECT CONSTRUCTION PHASING 5 I3.1. Phase I 5 3.2. Phase II 5 ISECTION 4. EROSION AND SEDIMENT CONTROL BMP'S 6 4.1. Minimize Disturbed Area and Protect Natural Features and Soil 6 I4.2. Control Storm water Flowing Onto and Through the Project 6 I4.3. Stabilize Soils 6 4.4. Protect Slopes 6 I4.5. Protect Storm Drain Inlets 6 4.6. Establish Perimeter Controls and Sediment Barriers 6 I4.7. Retain Sediment On-site and Control Dewatering Practices 6 • • 4.8. Establish Stabilized Construction Exits 7 I Konig Borrow Pit Storm Water Pollution Prevention Plan ii I ' ak 4.9. Additional BMP's 7 • SECTION 5. GOOD HOUSEKEEPING BMP'S 8 I 5.1. Material Handling and Waste Management 8 ' 5.2. Establish Proper Building Material Staging Areas 8 5.3. Designate Washout Areas 8 I5.4. Establish Proper Equipment/Vehicle Fueling and Maintenance Practices 8 5.5. Allowable Non-Stormwater Discharges and Control Equipment/Vehicle Washing 8 I5.6. Spill Prevention and Control Plan 8 I5.7. Additional BMP's 8 SECTION 6. PERMANENT (POST-CONSTRUCTION) BMP'S 9 I6.1. Biofilters 9 6.2. Detention Pond 9 I6.3. Earth Dikes, Drainage Swales, and Lined Ditches 9 IIII 6.4. Infiltration Basins 9 6.5. Porous Pavement 9 I6.6. Other Proprietary Permanent Structural BMP's 9 6.7. Outlet Protection and Velocity Dissipation Devices 9 I6.8. Slope Protection 9 6.9. Vegetated Strips and/or Swales 9 ISECTION 7. INSPECTION AND MAINTENANCE 10 I7.1. Temporary and Good Housekeeping BMP's 10 7.2. Permanent BMP's 10 ISECTION 8. RECORDKEEPING AND TRAINING 11 8.1. Recordkeeping 11 I8.2. Training 11 I8.3. Log of Changes to the SWPPP 11 • SECTION 9. FINAL STABILIZATION 12•Il Konig Borrow Pit Storm Water Pollution Prevention Plan iii I I ISECTION 10. REFERENCES 13 • APPENDIX A—EXISTING CONDITIONS IAPPENDIX B—PROJECT PLAN SET& BMP DETAILS I APPENDIX C—SOIL INFORMATION APPENDIX D—THREATENED AND ENDANGERED SPECIES AND HISTORICAL PRESERVATION ' DOCUMENTATION APPENDIX E— LOGS IAPPENDIX F—CITY INSPECTION REPORT COPIES APPENDIX G — PERMIT COPIES I IList of Figures ' • Figure 1—Vicinity Map 2 I I I I I I Konig Borrow Pit Storm Water Pollution Prevention Plan iv • SECTION 1. INTRODUCTION ' 1.1. Purpose The purpose of this document is to provide a complete Storm Water Pollution Prevention Plan (SWPPP) for the proposed Konig Borrow Pit project. The construction of a borrow pit to remove fill dirt which will ' be hauled to oil and gas sites in the area. The fill dirt will be used as a construction material.The proposed pit is 35 acres and will be mined in two phases. The maximum disturbance area will be 17.5 acres. There will be no processing, crushing, or screening performed on site. 1.2. Site Legal Description and Location ' The project site is located in the NW quarter of Section 11,Township 10 North, Range 62 West, of the 6th P.M., Weld County, Colorado.The site is bordered on the west by Weld County Road 81. Weld County Road 120 is located to the north of the pit. The site is approximately 3.5 miles southwest of the Town of ' Grover. The entrance to the site is from CR 81 and is located at Latitude 40°51'13"N and Longitude 104°17'49"W. See Figure 1 below for a vicinity map of the site. • Konig Borrow Pit Storm Water Pollution Prevention Plan Page 1 I • __.__.. . .. .• HEREFORD SE QUADR I 1145U S DEPARTMENT OF AGRICULTURE COLORADO-WELD C FORE:S•T SERVICE 7.5•MIMITE SERIES (TOP(X • •,n '53 1t X1 '6o '61 t Du ow `61 lit -,1 I 35 I' 11 Si • 36 .11 t ( s sa tu I a ,fir r - .. -- wet, %' • t'del a i I..a , I P. g / 1 1 We, Iv** "N 4 II, •.,' ' '1 rags 1 • w 9 1 ar. rt g III Sao 1 to x , G belt - - -. ...:e' _ _ —ilv _ _ _ _ ;"rte .. ►ar 1,21 ' ' .i•- . I --.,.%) , "•I In , ,•.► it ^t 11 1• 1 tin 4 PROJECT LOCATION a . .,-4 ad ) _ ,' -,.. I , _ i iN74 I0 16 ,: / f p �../ 14 ; C�, \. 13 .11 \ + 18 , :. T w I I . • 1 20 mom may. 7 ? .I, 1 1 i . .. 1. .. i •1 t /.► „19 I I in N S I C1 INDEX MAP 1 } ASELINE '�6 &"° Su1E - G0t0EN 4080601 Date o 1 Sheet Number PH (1931 960-9966 FAX (303) 440.9959 engineering corporation --- — Ng Scale o ' = 4000. Nap 1 Project Nome Project No o L :u 'O U3 Figure 1 — Vicinity Map • Konig Borrow Pit Storm Water Pollution Prevention Plan Page 2 • SECTION 2. SITE ASSESSMENT AND PROJECT INFORMATION ' 2.1. Soils, Slopes, Drainage Patterns, and Vegetation The soils at the site consist of Ascalon, Avar, and Renohill fine sandy foams and Platner loam. These are a part of the Type "B" and "C" Hydrologic Soils Group according to the U.S. Department of Agriculture. ' These soil types are characterized as well drained with a moderately fine texture, and by a moderately low to moderately high infiltration rate when thoroughly wet. See Appendix C for reference. The slopes are currently on the order of 1-5%on average, and relief is in the general direction of West to East. ' Vegetation predominantly consists of sparse native grasses with a few cactus. There are no trees. ' There are approximately 8.5 acres of off-site area to the northwest of the pit that currently flows across CR 81 into the pit area. 2.2. Receiving Waters Porter Creek is the receiving water. It is an intermittent drainage located 950 feet to the east of the pit boundary. This area has not been mapped by FEMA. Porter Creek is a tributary of Crow Creek. The ' confluence is approximately 3.5 miles to the south of the pit. 2.3. Site Features and Sensitive Areas to be Protected The Porter Creek drainage must be protected from potential pollutant sources from the pit. All runoff I within the pit boundary will be captured within the pit. Approximately 6.3 acres of the off-site basin to the northwest will be diverted in a ditch constructed at the north edge of the pit so none of this ' stormwater enters the pit. The remainder of the off-site basin, 2.3 acres will be captured within the pit. The pit will have temporary sediment ponds and silt fence to prevent sediment transport from the site. Discharge pumps with floating suction lines will convey stormwater from the sediment ponds to riprap pads. These flows will then drain overland towards the east and to Porter Creek. 2.4. Potential Sources of Pollution Dust created during mining and hauling activities and un-vegetated soils being susceptible to erosion are potential sources of sediment pollution. Sources of non-sediment pollution include fuel and oil from ' construction equipment, portable restroom facilities, and general refuse. 2.5. Historic Preservation There are no known historic structures on or immediately adjacent to the site. 2.6. Threatened and Endangered Species Based on a search of the Colorado Division of Wildlife GIS Map available on the Colorado Oil and Gas ' Conservation Commission Website, there are no threatened or endangered species on or near the project area.The nearest State Wildlife, Restricted Surface Occupancy, or Sensitive Wildlife Habitat Areas are all greater than 5 miles from the site (see Appendix D).The site is located within Colorado Division of Wildlife Fort Collins area.The phone number for this area is(970)443-1993. 411 Konig Borrow Pit Storm Water Pollution Prevention Plan Page 3 2.7. Existing and Proposed Conditions Maps See Appendix A for a map of the existing conditions at the site, and see Appendix B for the Reclamation Plan Map showing proposed conditions. 2.8. Project Information ' The site is currently pasture land and will be reclaimed to pasture land once mining operations are complete. The pit will be mined in 2 phases. Phase 1 is the east half of the pit and phase 2 is the west half of the pit. The gravel access road off of CR 81 will be left in place after reclamation for field access. ' The estimate of fill dirt to be removed from the site is 200,000 cubic yards. I • t Konig Borrow Pit Storm Water Pollution Prevention Plan Page 4 I • SECTION 3. PROJECT CONSTRUCTION PHASING 3.1. Phase I East half of the pit. The maximum disturbance area at any one time is 17.5 acres. BMP's will be constructed. Topsoil will be stripped and stockpiled. The fill dirt will be excavated and loaded into haul 1 trucks. The topsoil will be reapplied and all disturbed areas will be reseeded. Estimated timeline 12/15/2010 through 12/15/2015. 1 3.2. Phase II West half of the pit. The maximum disturbance area at any one time is 17.5 acres. BMP's will be constructed. Topsoil will be stripped and stockpiled. The fill dirt will be excavated and loaded into haul 1 trucks. The topsoil will be reapplied and all disturbed areas will be reseeded. Estimated timeline 12/15/2015 through 12/15/2020. i 1 1 • 1 1 i 1 1 1 1 • Konig Borrow Pit Storm Water Pollution Prevention Plan Page 5 1 I • SECTION 4. EROSION AND SEDIMENT CONTROL BMP'S 4.1. Minimize Disturbed Area and Protect Natural Features and Soil The maximum disturbed area at any one time will be 17.5 acres. Silt fence or sediment control log shall be installed along the East side of each phase boundary prior to commencing work in that phase in order to prevent sediment pollution. Silt fence and sediment control log shall be installed as per the County standard in the approximate locations as depicted on the Erosion Control Plan shown in Appendix B. The temporary topsoil stockpiles shall be wetted with a water truck as needed to minimize dust pollution. The topsoil stockpiles will be seeded if left in place for more than 180 days. 4.2. Control Storm water Flowing Onto and Through the Project ' Approximately 6.3 acres of the off-site basin to the northwest will be diverted in a ditch constructed at the north edge of the pit so none of this stormwater will enter the pit. The remainder of the off-site ' basin, 2.3 acres, will be captured within the pit. 4.3. Stabilize Soils Temporary measures such as straw mulch and temporary seeding shall be utilized on an as-needed basis to stabilize on-site soils during construction. All disturbed areas shall be seeded with permanent seed consistent with a pasture land use and acceptable to Weld County immediately following completion of I • work in each phase and as weather permits. 4.4. Protect Slopes Temporary measures such as straw mulch and straw waddles shall be utilized on an as-needed basis to slow the flow of surface water and prevent erosion during all phases of mining. 4.5. Protect Storm Drain Inlets There are no existing storm drain inlets to be protected on-site. ' 4.6. Establish Perimeter Controls and Sediment Barriers In accordance with Colorado Division of Reclamation Mining and Safety requirements the pit boundary must be staked prior to commencing operations. The silt fence or sediment control logs shall be put in ' place immediately. The diversion ditch along the north pit boundary will also be constructed immediately with sediment control logs placed every 100 feet within the ditch. All silt fence shall be maintained through the end of mining and reclamation operations. Upon completion of the project, ' any remaining silt fence and sediment control logs shall be removed by the operator. 4.7. Retain Sediment On-site and Control Dewatering Practices ' If any low spots are created inadvertently during the mining operations then these shall be dewatered within 72 hours of a storm event. ' The temporary sediment ponds shall be rough-constructed at the beginning of each phase of mining. Ditches and berms are to be constructed to direct flows to the ponds continuously through the ' • remainder of the mining operation to avoid ponding of storm water in undesirable areas. Riprap Konig Borrow Pit Storm Water Pollution Prevention Plan Page 6 Irundowns are to be constructed where ditches connect to each pond to prevent erosion at these • locations. Portable dewatering pumps will be used with floating suction lines. The pumps are to be rated at 150 gpm which will allow proper settling of sediment while draining the ponds within 72 hours. See the Erosion Control Plan for pond, ditch, berm, rundown, and discharge locations. ' As previously stated silt fence or sediment control logs will be placed along the east edge of each mining phase and sediment control logs will be placed in the diversion ditch along the north edge of the pit for diverting off-site flows. 4.8. Establish Stabilized Construction Exits A double cattle guard having a total length of 16 ft. will be located at the entrance to the site. This will ' allow a complete revolution of the tires over the cattle guard to remove mud and debris from vehicles before leaving the site and entering CR 81. ' 4.9. Additional BMP's None. • Konig Borrow Pit Storm Water Pollution Prevention Plan Page 7 • SECTION 5. GOOD HOUSEKEEPING BMP'S 5.1. Material Handling and Waste Management Excavated topsoil shall be stockpiled temporarily during mining operations. ' An accessible area of the site will be designated for a trash bin. Waste generation is anticipated to consist of food packaging, beverage containers, and miscellaneous trash from the equipment operators and haul truck drivers. The trash container will have a snap-on lid. The trash container will be emptied ' as needed and taken to the owner's shop just to the south on CR 81. Waste Management picks up trash from this location. Daily inspection, reporting, and training of personnel for this process shall be the responsibility of the operator. Portable restroom facilities will be provided at 1 unit per 10 on-site workers. A qualified sanitation company will empty and service the facilities on an as-needed basis. Daily inspection and reporting for ' this process shall be the responsibility of the operator. 5.2. Establish Proper Building Material Staging Areas There will be no building materials on-site. 5.3. Designate Washout Areas I . There will be no concrete poured on site. 5.4. Establish Proper Equipment/Vehicle Fueling and Maintenance Practices ' Equipment and vehicle maintenance and refueling are expected to be performed off-site. Should either function be necessary on site then the operator shall properly dispose of refuse created during vehicle maintenance. Fuel and oil spills shall be cleaned immediately per section 5.6 and all applicable regulations. 5.5. Allowable Non-Stormwater Discharges and Control Equipment/Vehicle Washing ' No equipment or vehicles shall be washed on-site. Water may be used as a dust control method during mining operations. Water used for this purpose ' could produce a small amount of runoff. 5.6. Spill Prevention and Control Plan No materials or chemicals will be stored on site. All vehicles and equipment on-site are to be monitored closely for leaks and receive regular preventative maintenance. Spills shall be contained immediately. The Stormwater Management Plan Administrator, Weld County Department of Health Services (970- 304-6415), and Colorado Department of Public Health and Environment (303-692-3517) shall be notified immediately of any spills. ' 5.7. Additional BMP's • None. Konig Borrow Pit Storm Water Pollution Prevention Plan Page 8 I • SECTION 6. PERMANENT (POST-CONSTRUCTION) BMP'S 6.1. Biofilters N/A. 6.2. Detention Pond N/A. 6.3. Earth Dikes, Drainage Swales, and Lined Ditches N/A. 6.4. Infiltration Basins N/A. 6.5. Porous Pavement N/A. 6.6. Other Proprietary Permanent Structural BMP's ' N/A. 6.7. Outlet Protection and Velocity Dissipation Devices ' • N/A. 6.8. Slope Protection ' The final reclaimed slope at the west edge of the pit will be left at a 3:1 slope and seeded and mulched for final slope protection. ' 6.9. Vegetated Strips and/or Swales The disturbed areas will be revegetated at time of reclamation with pastureland grass seed. 1 I I . ' Konig Borrow Pit Storm Water Pollution Prevention Plan Page 9 1 I I • SECTION 7. INSPECTION AND MAINTENANCE ' 7.1. Temporary and Good Housekeeping BMP's At the end of each working day and following every storm event, all erosion control devices shall be inspected for sediment and damage. An example inspection form can be found in Appendix E. Sediment ' shall be cleaned and damaged devices repaired immediately. Inspection and maintenance of BMP's in this category shall be the responsibility of the operator. 7.2. Permanent BMP's N/A. There are no permanent BMP's to be installed on the site. 1 • I t • ' Konig Borrow Pit Storm Water Pollution Prevention Plan Page 10 SECTION 8. RECORDKEEPING AND TRAINING 8.1. Recordkeeping Baseline strongly recommends that each contractor keeps applicable records of the following available to inspectors at the site: I • Dates of grading and construction activity • A copy of the general construction/mining permit • The signed and certified Notice of Inspection (N01)form or permit application form I • A copy of the letter from the State notifying of their receipt of complete NOI form or permit application I • Inspection reports ' • Records relating to endangered species and historic preservation • Any other records as specified in the permit I • 8.2. Training Baseline strongly recommends that all personnel on the site have an understanding of the SWPPP and ' be trained by their employer on BMP's specific to their jobs. 8.3. Log of Changes to the SWPPP Each contractor shall log changes made to the SWPPP including additions of new BMP's, replacement of failed BMP's, significant changes in the activities or timing on the project, changes in personnel, changes in inspection or maintenance procedures, etc. Refer to the log provided in Appendix E and add information as needed. This log shall be available to inspectors on the site. i • ' Konig Borrow Pit Storm Water Pollution Prevention Plan Page 11 • SECTION 9. FINAL STABILIZATION Once reclamation and revegetation have been completed in a specific area, the state permit may allow inspections to discontinue in that area. An example Final Stabilization Log is included in Appendix E. Final stabilizations shall be recorded by the operator completing the work and made available for inspectors on the site. I I I I I • I I I I I I I . Konig Borrow Pit Storm Water Pollution Prevention Plan Page 12 I • ' SECTION 10.REFERENCES ICity of Greeley's Stormwater Pollution Prevention Plan Template v. 1.0, January 9, 2007. Weld County, Weld County Code - Chapter 8 Public Works, Current Edition. Urban Drainage and Flood Control District, Urban Storm Drainage Criteria Manual Volume Ill, updated 9/1/1999, revised 4/2008. IU.S. Environmental Protection Agency, National Menu of Stormwater Best Management Practices, http://cfpu b.epa.gov/npdes/stormwate r/menuofbm ps/i ndex.cfm I I I I • • I I I I I I � Konig Borrow Pit Storm Water Pollution Prevention Plan Page 13 I i • IAPPENDIX A- EXISTING CONDITIONS I I I I I I I • I I I I I I I � IKonig Borrow Pit Storm Water Pollution Prevention Plan I aw Ora-am mid0u maws Iowa.mut _-_-- _. _. _-_ Old SN0LLI0N00 0NLLSIX3 wow ""s OZL NOW ID NO era.p MVr. 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I og- j 8 _ � 9 ^ ^ $ IN i ng ✓(affi, s N Si t os i i g-Qa a aF g C2 gi! � aoIV= \ill °pM I.,$3w3s} @a :R I 'g ii ierr C$4J _ ill! I I il 5 y,.„ T .‘„. ril,11 4 IH \ \ ‘L'4' 18 O o g. os II r °•o Fg ' ' e -' “4.41 ,Ig. JIlL �iH O 5� V8 /II !h I grnl 02 Ed YO I� g 13 I LT ' "t8' p �1, iy(f� I G „ $¢ a e, Y $ kQ I Ii� s e g�a \ ageAn = _ !�i J xay pp $a� � Y01" P 1 - rOs l. N /go 0 �I .g S3 F ri srosi' I R8rgr ro y \ -►� L% y� ��_2, RR 4 Gi�y olos J F7 1 •g Eo n* �c� "u Si— Sa� Urp. F 3lawce S a --If a Qce � + 4"aP -11 "� g;5 moo ., Aqi 85g a� &i (IPI*R 5905 DRAINAGE CRITERIA MANUAL (V. 3) CONSTRUCTION BEST MANAGEMENT PRACTICES • t • A A SCL - SEDIMENTATION LOG-12'MIN.DIAMETER 1 1 , 1�-- USE A STAKE EVERY 24'AT ALTERNATE YO DEGREE ORIENTATION THROUGHOUT THE SEDIMENTATION LOG. 0 Mat USE TWOSTAKES112'x1V1'xSUFFCIENTLENGHT TO IEET AT LEAST I2'INTO SOIL AT EACH END OF LOG cSTAAE AT GO DEG. TO EACH OTHER _� WETLANDS FEATURES OR i.' REQUIRING OR TECTI9RN I e ` - t / .... I • SECTION A-A SEDIMENT CONTROL LOG INSTALLATION NOTES 1.SEE PLAN VIEW FOR: -LOCATION AND LENGTH OF SEDIMENT CONTROL LOG. 2.SEDIMENT CONTROL LOGS INDICATED ON INITIAL SWAP PLAN SHALL SE INSTALLED PRIOR TO ANY LAD-DISTRURBING ACTIVITIES. S SEDIMENT CONTROL LOGS SHALL CONSIST OF STRAW,COMPOST.EXCELSIOR OR COCONUT FIBER. 4.NOT FOR USE IN CONCENTRATED FLOW AREAS. 5.THE SEDIMENT CONTROL LOG SHALL BE TRENCHED INTO THE GROUND A MINIMUR OF Y AND ATLIAAENT LOGS SHALL BE FIRMLY PACKED AGAINST EACH OTHER TO ELIMINATE ALL GAPS, SEDIMENT CONTROL LOG MAINTENANCE NOTES I.THE SWAP MANAGER SHALL INSPECT SEDIMENT CONTROL LOGS DAILY,DURING AND AFTER ANY STORM EVENT AND MAKE REPAIRS OF CLEANOIR UPSTREAM SEDIMENT AS NECESSARY. 2.SEDIMENT ACCUMULATED UPSTREAM OF SEDIMENT CONTROL LOGS SHALL BE REMOVED WHEN THE UPSTREAM SEDIMENT DEPTH REACHES%THE HEIGHT OF THE CREST OF THE LOG. 5.SEDIMENT CONTROL LOGS SHALL BE REMOVED AT THE END OF CONSTRUCTION. IF ANY DISTURBED AREA EXISTS AFTER REMOVAL,IT SHALL BE COVERED WITH TOPSOIL,DRILL SEEDED AND CRIMP MULCHED OR OTHERWISE STABILIZED IN A MANNER APPROVED BY THE LOCAL JURISDICTION. DETAIL BASED ON DETAILS PROVIDED BY DOUGLAS COUNTY AND COOT Figure C5-8—Sediment Control Log • 2007-10 C-61 • Urban Drainage and Flood Control District I DRAINAGE CRITERIA MANUAL(V. 3) CONSTRUCTION BEST MANAGEMENT PRACTICES I • VONROTENAONIKWL NLETPO1EC1DI 1 , v Ray aIAN LOG --� Sa!llNgWLELLSI INNIS LOIN PL]TECOON / �i NETTO lE TECOON KN4 , �� RqY—'--E NETPAOTKTNN EROSOILOG SWAB NNIILaGEE ' PLAN VIEW SECTION S-S CUI VFRT EROSION LOGINLET PROTECTION I NSW LOGS S L BE IMMURED I WINNOWS ITN I c o1 rc—'S, ROW PoNIA RNNA L V a ( fE110Vf L. Il EMT )'n,P \\\ I / 7 I I 1 \\ \\ i= // a09gNL00 PLAN VIEW �— PLAN VIEW INM A OWN ?- NOTE LOGATEETtleON LOGS I .frk C ATTIE MOVE EDGEPoNISAaWLaNG1ei7NW RNlta �_-- --i.`._ (F11EO]NCaTEA°�L ELEVATION SECTION C-C EROSION LOG DETAIL DITCH INSTALLATION ' DROP INI ET EROSION LOG FILTER NOTE BICtlgILOG$9WL EETNNRY 1&JIIEDWIN NOGW& Adapted From Colorado Department of Transportation(2007) IFigure C5-9--Sediment Control Log Application Examples I '• • C-62 2007-10 Urban Drainage and Flood Control District I DRAINAGE CRITERIA MANUAL(V. 3) CONSTRUCTION BEST MANAGEMENT PRACTICES • I • 16 ' otok ... g it I; I I 1 -i '1v I . SILT FENCE INSTALLATION -NTS- I • I -- FABRIC MATERIAL POST ANCHORED TO FABRIC - (ANCHORED IN TRENCH) ' _ _ 4'xe TRENCH COMPACTED BACKFILL NOTE: EROSION CONTROL MEASURES ' I, FLOW SHALL SE MAINTAINED UNTILI --- LANDSCAPING IS COMPLETED, OR AS DIRECTED BY LOCAL 1/2H JURISDICTION (171 MIN) 1 I SECTION -NTS- DETAILS PROVIDED TO DISTRICT BY THE CITY OF BROOMFIELD,COLORADO I Figure C5-10—Slit Fence Erosion Barrier II I • 2007-10 C-63Urban Drainage and Flood Control District I I ' APPENDIX C-SOIL INFORMATION I I I I I I I I I I I I Konig Borrow Pit Storm Water Pollution Prevention Plan I USDA United States A product of the National Custom Soil Resource I 41 -a- Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for States Department of J Agri: ;:: :tte ultuWe t d Count74 Natural agencies including the Colorado Northern Resources Agricultural Experiment I Conservation Stations, and local Service participants Part IKonig Borrow Pit I I 1 I I 6 . t k a� y - > - .-., it I Iv , c, i I . ;- I • weld1 I • . _ . .. . , . - , .,1,1 - Co d .:, t: , , ii i I . �.. T .4 a. + s A t III I il - ._ . .._ . • . i : _.: 4 }: � �i September 8, 2010 • Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation,waste disposal, and pollution control can use the surveys to help them understand, protect,or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area • planning,onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://soils.usda.gov/sqi/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center(http://offices.sc.egov.usda.gov/locator/app? agency=nrcs) or your NRCS State Soil Scientist(http.//soils.usda.gov/contact/ state_offces/). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads.Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies.The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil Data Mart is the data storage site for the official soil survey information. The U.S. Department of Agriculture(USDA)prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information,political beliefs, reprisal,or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.)Persons with disabilities who require alternative means • 2 . for communication of program information (Braille, large print, audiotape, etc.)should ' contact USDA's TARGET Center at(202) 720-2600 (voice and TDD). To file a complaint of discrimination,write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800)795-3272 (voice)or(202)720-6382 (TDD). USDA is an equal opportunity provider and employer. 1 • I • ' 3 t • Contents Preface 2 How Soil Surveys Are Made 5 Soil Map 7 Soil Map 8 Legend 9 Map Unit Legend 10 Map Unit Descriptions 10 Weld County, Colorado, Northern Part 12 4—Ascalon fine sandy loam, 0 to 6 percent slopes 12 9—Avar fine sandy loam 13 54—Platner loam, 0 to 3 percent slopes 14 56—Renohill fine sandy loam, 6 to 9 percent slopes 15 References 17 • • 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas ' in a specific area.They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles.A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other ' living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share ' common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. • The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of ' landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform,a soil scientist develops a concept,or model,of how they were formed.Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by ' an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). ' Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of ' soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the ' 5 1 Custom Soil Resource Report individual soils with similar soils in the same taxonomic class in other areas so that • they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units,complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil- landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit • component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests.Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit.Aerial photographs show trees,buildings,fields, roads, and rivers, all of which help in locating boundaries accurately. • 6 I . Soil Map 1 The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 1 • 1 1 I I • 7 N 1A o- b in in C 3 Q g S 0OZ£ZS:• 00t ZSt 000 ZS 006 Z9D 009 ZS 001 ZSD 009ZZSv 00S ZSv 00PZZSv 0O£ ZSv Oct ?SP SII „IS .91 .1701 1 - 8 .,L9 .9L ,VOL 1 ' . "+ It 44g4 -• A ; 8 g -11 in '' f•7 S • 8 • 8 N N O O in t'- p 8 8 • O G tD t• .D S 4 4 1 , 8 - S w in o a c ,, o D aco O CO u..,,n 47 O u-icn8 v) II (� r� c 0 i.: v". w in N E 2O to / j o U tr. In CO / g i ill o . H O al N tr in v- •/ En•2 o l r} f - 0: O N r",i '.. o ~ - . ., . . - - - - - •• .rte_...- ___• _ t'• - - -- .. _-. N � N 0 Oll d. In tr) 4^ in _ 1.'1 or in V • U + ._ - _ . O N • in in !`� t t 11'1 Co .i a co `" M O C 0 • 48 in CI jai 8 EZ Q ..9 .9i, .1701 . - - — -- -- N ..S ,9l .170 I o3::E:7r OL. 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X © - 4 « es > + xI GA * W cp | < (0 I en CD | • Custom Soil Resource Report • Map Unit Legend Weld County,Colorado,Northern Part(CO617) Map Unit Symbol Map Unit Name Acres In AOI I Percent of AOI 4 Ascalon fine sandy loam,0 to 6 percent 10.3 4.0% slopes 9 Avar fine sandy loam 144.5 57.0% Platner loam,0 to 3 percent slopes 8.9 3.5 56 Renohill fine sandy loam,6 to 9 percent 89 9 35.5 I slopes Totals for Area of Interest 253.6 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic • class there are precisely defined limits for the properties of the soils.On the landscape, however,the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently,every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management.These are called contrasting,or dissimilar, components.They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that • 10 1 Custom Soil Resource Report ' • have similar use and management requirements. The delineation of such segments 1 on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for 1 differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, 1 degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly 1 indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. 1 These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps.The 1 pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or I • miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar 1 interpretations can be made for use and management The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up 1 of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 1 1 1 � 1 11 1 Custom Soil Resource Report Weld County, Colorado, Northern Part 4—Ascalon fine sandy loam, 0 to 6 percent slopes Map Unit Setting Elevation:4,500 to 6,500 feet Mean annual precipitation: 13 to 17 inches Mean annual air temperature: 46 to 57 degrees F Frost-free period: 130 to 160 days Map Unit Composition Ascalon and similar soils: 85 percent Minor components: 15 percent Description of Ascalon Setting Landform: Plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Calcareous loamy alluvium Properties and qualities Slope: 0 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class:Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high (0.60 to 2.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 10 percent Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: Moderate(about 6.9 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability(nonirrigated): 3e Ecological site: Loamy Plains(R067BY002CO) Typical profile 0 to 8 inches: Fine sandy loam 8 to 22 inches: Sandy clay loam 22 to 60 inches: Sandy loam Minor Components Olney Percent of map unit: 8 percent Otero Percent of map unit: 7 percent 41 12 Custom Soil Resource Report • ' 9—Avar fine sandy loam ' Map Unit Setting Elevation:4,500 to 5,500 feet Mean annual precipitation: 11 to 14 inches Mean annual air temperature:46 to 48 degrees F ' Frost-free period: 130 to 160 days Map Unit Composition ' Avar and similar soils: 80 percent Minor components: 20 percent Description of Avar ' Setting Landform: Stream terraces, swales, flood plains Down-slope shape: Linear ' Across-slope shape: Linear Parent material: Calcareous loamy alluvium Properties and qualities I IP Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class:Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to ' moderately high (0.06 to 0.60 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None ' Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Maximum salinity:Very slightly saline to strongly saline (4.0 to 32.0 mmhos/cm) Sodium adsorption ratio, maximum: 250.0 ' Available water capacity: Moderate (about 6.6 inches) Interpretive groups Land capability(nonirrigated): 7s ' Ecological site: Salt Flat(R067XY033CO) Typical profile 0 to 3 inches: Fine sandy loam 3 to 8 inches: Clay loam 8 to 60 inches: Sandy clay loam ' Minor Components Fluvaquentic haplustolls Percent of map unit: 6 percent Landform:Terraces I Ascalon IF Percent of map unit: 5 percent ' 13 1 Custom Soil Resource Report Haverson S Percent of map unit:4 percent Nunn Percent of map unit: 3 percent Bankard Percent of map unit:2 percent 54—Platner loam, 0 to 3 percent slopes Map Unit Setting Elevation:4,500 to 5,900 feet Mean annual precipitation: 17 to 19 inches Mean annual air temperature:46 to 52 degrees F Frost-free period: 140 to 165 days Map Unit Composition Platner and similar soils:80 percent Minor components: 20 percent Description of Platner Setting S Landform: Stream terraces, plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Calcareous loamy alluvium Properties and qualities • Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 10 percent Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: Moderate (about 8.9 inches) Interpretive groups Land capability classification (irrigated): 2e Land capability(nonirrigated): 3e Ecological site: Loamy Plains(R067BY002CO) Typical profile 0 to 4 inches: Loam 4 to 24 inches: Clay 24 to 60 inches: Sandy loam S 14 Custom Soil Resource Report Minor Components Ascalon Percent of map unit: 8 percent Manzanola Percent of map unit:6 percent Nunn Percent of map unit:6 percent ' 56—Renohill fine sandy loam, 6 to 9 percent slopes Map Unit Setting Elevation: 3,600 to 6,200 feet ' Mean annual precipitation: 11 to 16 inches Mean annual air temperature:46 to 48 degrees F Frost-free period: 100 to 160 days Map Unit Composition Renohill and similar soils: 85 percent Minor components: 15 percent I • Description of Renohill Setting ' Landform: Plains Down-slope shape: Linear Across-slope shape: Linear ' Parent material: Calcareous, clayey loamy residuum weathered from shale Properties and qualities Slope:6 to 9 percent ' Depth to restrictive feature:20 to 40 inches to paralithic bedrock Drainage class:Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) ' Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None ' Calcium carbonate, maximum content: 15 percent Maximum salinity Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: Low (about 5.0 inches) ' Interpretive groups Land capability(nonirrigated): 6e Ecological site: Loamy Plains(R067BY002CO) ' Typical profile 0 to 4 inches: Fine sandy loam • 4 to 17 inches: Clay I 15 Custom Soil Resource Report 17 to 29 inches:Clay loam • 29 to 33 inches: Unweathered bedrock Minor Components Platner Percent of map unit: 5 percent Midway Percent of map unit: 5 percent Other soils Percent of map unit: 3 percent Ulm Percent of map unit: 2 percent • • 16 I . 1 References American Association of State Highway and Transportation Officials(AASHTO).2004. Standard specifications for transportation materials and methods of sampling and ' testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. ' Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. ' Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. ' Hurt,G.W.,and L.M.Vasilas,editors.Version 6.0,2006.Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. I • Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://soils.usda.gov/ ' Soil Survey Staff. 1999. Soil taxonomy:A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http://soils.usda.gov/ ' Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http://soils.usda.gov/ Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and ' Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of ' Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.glti.nrcs.usda.gov/ ' United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. ' 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. • http://soils.usda.gov/ 1 17 Custom Soil Resource Report United States Department of Agriculture, Soil Conservation Service. 1961. Land • capability classification. U.S. Department of Agriculture Handbook 210. • • 18 I I . I APPENDIX D -THREATENED AND ENDANGERED SPECIES AND HISTORICAL PRESERVATION DOCUMENTATION I I I I I I I I I I •I . 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