HomeMy WebLinkAbout20071976.tiff EPARTMENT OF PLANNING SERVICE;
1555 N. 17th Avenue, Greeley, Colorado 80631
Phone(970)353-6100, Ext. 3540 Fax(970) 304-6498
USE BY SPECIAL REVIEW(MINING OPERATION) APPLICATION
FOR THE DEPARTMENT OF PLANNING USE DATE RECEIVED:
RECEIPT#/AMOUNT# /$ CASE#ASSIGNED:
APPLICATION RECEIVED BY PLANNER ASSIGNED:
To be completed by APPLICANT in accordance with procedural guide requirements:
1. I (we), the undersigned, hereby request a hearing before the Weld County Planning Commission concerning
a proposed gravel (gravel, coal, borrow pit, etc.) mining operation for the following described
unincorporated area of Weld County:
Legal Description: Part of the SE Y. and part of the NE h,Section 36.Township 1 North, Range 67 West
Flood Plain: Zone A Zone District: A , Total Acreage: 52.8 Overlay District:
Geological Hazard: , Airport Overlay District:
2. Surface owner(s)of area of land described:
Name: Lot Holding Investments, LLC Address: 301 Centennial Drive, Milliken, CO 80543
Name: Valerie and Robert Parker Address: 634 Weld County Road 23.5, Brighton, CO 80601
3. Owner(s)of mineral rights or substance to be mined:
Name: Same as above Address: Same as above Phone:
Name: Same as above Address: Same as above Phone:
4. Applicant's name: Hall-Irwin Corporation Email Address jeffgregg(&hall-irwin.com
Address: 301 Centennial Drive, Milliken, CO 80543 Phone: 970-587-7200
5. Identify any prior permits for mining held by applicant or affiliated person:
Firestien Resource MLRB Permit M-1996-060 and USR 1125; Herbst Resource MLRB Permit M-1986-031
LaPoudre Resource MLRB Permit M-1983-090; USR 00571; Baseline MLRB Permit M-1997-058 & USR 1172
I (We) request that the following described property be designated a Use BY Special Review by the Weld County
Board of County Commissioners. I (We) hereby depose and state under penalties of perjury that all statements,
proposals, and/or plans submitted with or contained within the application are true and correct to the best of my
(our) knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs,
a letter of authorization from all fee owners must be included with the application. If a corporation is the fee owner,
notariz "d ce must be included showing the signatory has to legal authority to sign for the corporation.
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ture: Owner o uthorize�Age Date Signature: Owner or Authorized Agent Date
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EXHIBIT
15 I 2
2007-1976
DEPARTMENT OF PLANNING SERVICES
1555 N. 17th Avenue, Greeley, Colorado 80631
Phone(970) 353-6100, Ext. 3540 Fax (970) 304-6498
USE BY SPECIAL REVIEW(MINING OPERATION)APPLICATION
FOR THE DEPARTMENT OF PLANNING USE DATE RECEIVED:
RECEIPT#/AMOUNT# /$ CASE#ASSIGNED:
APPLICATION RECEIVED BY PLANNER ASSIGNED:
To be completed by APPLICANT in accordance with procedural guide requirements:
1. I (we), the undersigned, hereby request a hearing before the Weld County Planning Commission concerning
a proposed gravel (gravel, coal, borrow pit, etc.) mining operation for the following described
unincorporated area of Weld County:
Legal Description: Part of the SE 1/4 and part of the NE I&Section 36,Township 1 North, Range 67 West
Flood Plain: Zone A Zone District: A ,Total Acreage: 52± , Overlay District:
Geological Hazard: Airport Overlay District:
2. Surface owner(s) of area of land described:
Name: Lot Holding Investments, LLC Address: 301 Centennial Drive, Milliken, CO 80543
Name: Valerie and Robert Parker Address: 634 Weld County Road 23.5, Brighton, CO 80601
3. Owner(s) of mineral rights or substance to be mined:
Name: Same as above Address: Same as above Phone:
Name: Same as above Address: Same as above Phone:
4. Applicant's name: Hall-Irwin Corporation Email Address ieffaregg(5hall-irwin.com
Address: 301 Centennial Drive, Milliken, CO 80543 Phone: 970-587-7200
5. Identify any prior permits for mining held by applicant or affiliated person:
Firestien Resource MLRB Permit M-1996-060 and USR 1125; Herbst Resource MLRB Permit M-1986-031;.
LaPoudre Resource MLRB Permit M-1983-090; USR 00571; Baseline MLRB Permit M-1997-058 & USR 1172
I (We) request that the following described property be designated a Use BY Special Review by the Weld County
Board of County Commissioners. I (We) hereby depose and state under penalties of perjury that all statements,
proposals, and/or plans submitted with or contained within the application are true and correct to the best of my
(our) knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs,
a letter of authorization from all fee owners must be included with the application. If a corporation is the fee owner,
notarized evidence must be included showing the signatory has to legal authority to sign for the corporation.
Signature: Owner or Aut or' ed Agent Date Signature: Owner or Authorized Agent Date
15
STATEMENT OF AUTHORITY
(Section 38-30-172, C.R.S.)
1. This State of Authority related to an entity named LOT HOLDING
INVESTMENTS LLC.
2. The type of entity is a LLC.
3. The entity is formed under the laws of Colorado
4. The mailing address of the entity is:
301 Centennial Drive, Milliken Colorado 80543
5. The name or position of each person authorized to execute instruments conveying,
encumbering, or otherwise affecting title to real property on behalf of the entity is:
Manager
6. The authority of the foregoing person(s)to bind the entity is limited as follows:
7. The Statement of Authority is executed on behalf of the entity pursuant to the
provisions of 38-30-172 C.R.S.
8. This Statement of Authority amends and supersedes in all respects any prior
Statement of Authority executed on behalf of the entity.
Executed this Z C' day of l
` a 1, , 200 '7 .
By: ,- c/ �
Name:±r€i' \te. l
Title: Ot-- / ti\ a ,�
State of Colorado )
) ss
County of woo )
The foregoing instrument was acknowledged befo a me this 2U`- day
{ [Vva c l , 2001. by 'sa-t eta, \ as w 'c,'oft fl h e(c.'..f 1,,,r/.hA a
Colorado Limited Liability Company.
Witness my hand and official seal.
Co OP A • .!� Name:
.G) a Title: Notary Public
• My Commission Expires: 34-2(1!(�
ol?
�. • .U�y 1,`G.PQ�rYt
)F9F CCA�C1�`.'
CIVIL RES- URCES, LLC
I NCINLERS & PLANNERS
/elA
March 8, 2007
Weld County Department of Planning Services
918 10th Street
Greeley, CO 80631
RE: Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource
Use by Special Review Application
Dear Planning Department:
Enclosed please find a Use by Special Review application for the Parker/Dersham Sand and Gravel Resource
located at the intersection of Baseline Road (WCR 2) and Weld County Road 23.5 near the Town of Brighton. The
application is for a sand and gravel mining operation. As required we have enclosed the following information:
• Department of Planning Services Submittal Checklist
• Original+29 copies of Use by Special Review Application Form
• 30 sets of 24 x 36 Special Review Plat Maps(Existing Conditions, Mining Plan Map, Reclamation Plan Map,
Landscape Plan Map)
• 11 sets of reduced copies of the Maps
• Original+29 copies of Use by Special Review Questionnaire
• Original +29 copies of Weld County Road Access Information Sheet
• 12 copies of Evidence of Adequate Water Supply(Exhibit G of the DMG Application)
• 12 copies of ISDS permit
• 11 copies of deed
• 1 original Certificate of Conveyances
• 2 copies of Soils Report(Exhibit I of the DMG Application)
• Source of Applicant's Legal Right to Enter(Exhibit N of the DMG Application)
• Division of Minerals and Geology(DMG) Permit Application and approval letter dated June 20, 2006.
• List of Property Owners within 500 feet
• Certified List of Mineral and Surface Owners and Lessees
• $5,820 Application fee, Civil Resources check#2923
The property included in this application is under review by Weld County Planning staff for a Recorded Exemption, an
amended Subdivision Exemption (SE-656), and an amended Recorded Exemption (RE-4290). The desired end
result of all three is to maximize water future water storage and to create a new lot for the Bestway concrete batch
plant.
1. A new RE for the HIBE property to create the east portion of the new Bestway Lot (Lot A). Lot B will
continue to be mined under USR permit 1172 and will ultimately be reclaimed to a water storage reservoir.
We are proposing that the new Lot A be accessed via an access easement from the existing site access.
We will provide this easement after we have obtained approval for the RE.
2. A second amendment to Subdivision Exemption (SE) 656 to relocate the lot to the southeast corner of the
property to create the west portion of the new Bestway Lot. This lot would be incorporated into the new Use
by Special Review application that is also being submitted concurrent with these applications.
3. A second amendment to Lot B of RE 4290 to reflect the relocated lot created by SE 656. Hall-Irwin
Corporation is proposing to mine Lot B and reclaim it to a water storage reservoir in accordance with the
Use by Special Review Application that is being submitted simultaneously with these exemption
applications.
323 FIFTH STREET • P.D. Box 680 • FREDERICK, CO 80530 • PHONE (303) B33-1416 • FAX (303) 833-285❑
CIVIL RES-bURCES,LLC
If you have any questions, please don't hesitate to contact me at 303.833.1416 extension 203. Thank you for your
time and assistance with this application.
Sincerely,
CIVIL R OURCES, LLC
Danna Ortiz
o
Planner
C: Jeff Gregg, Hall-Irvin Corporation
J:Uialllrwin\Parker-Dersham\Weld County\USR submittal Feb 2007\USR Submittal Letter 03-07.doc
USR QUESTIONNAIRE
1. A detailed description of the method of mining operation. The description shall include:
a. The types and numbers of structures that will be erected (built) on site including
operation and processing equipment to be employed.
Conveyors will be erected on site to convey the materials to the processing equipment
located at the adjacent Baseline Site (Weld County USR permit 1172). Refer to the Mining
Plan Map for the approximate location of the conveyors. The scale house and office that are
located on the Baseline Site may be relocated to this site (Dersham property) to enable the
Baseline site to be completely mined and reclaimed (the operator will continue to use the
same access). The operator will import and export material.
b. The number of shifts to be worked and the maximum number of employees.
Hall-Irwin Corporation anticipates that there will be a maximum of two shifts and twelve
employees working on this site.
c. Whether the operation will involve a wet or dry pit.
The operation will involve a dry pit. The operator will excavate dewatering trenches down to
bedrock along the perimeter of the mining phase. Groundwater collected in the dewatering
trench will be discharged to the adjacent Baseline Resource settling ponds and discharged
per the existing Colorado Discharge Permit System (CDPS) permit.
d. County roads and bridges to be utilized, along with site entrance/exit points.
Not applicable. The proposed operation will not generate any new mining traffic. The
operator will convey the mined materials to the existing Baseline Resource site, where it will
be processed and hauled off of the site in accordance with the Weld County Road
Maintenance Agreement. The accesses that are approved through AM RE-4290 and the 2nd
Am SE-656 will not be used for this USR or for the Bestway Batch Plant. Refer to the Weld
County Road Access Information Sheet, the Mining Plan and the Traffic Study for details.
e. The size of the area and stages to be worked at any one time.
The site will be mined in three phases. The phases will range from 7-17 acres in size.
f. A timetable giving the periods of time and number of phases to be worked, which will
be required for the various phases of the operation.
The timetable is highly dependent on market demand. However, it is anticipated that it will
take 1.5—2 years to mine each phase. It is likely that the operator will mine and reclaim the
site concurrently. That is, Phase 1 will be reclaimed while Phase 2 is being mined. Both
sites should be completely reclaimed within 1-2 years after mining operations cease. Mining
will likely begin in Phase 3 within four years of the end of mining Phases 1 and 2, depending
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-1
on market conditions. It will take approximately three years to mine and two years to reclaim
it.
g. The depth and thickness of the mineral deposit to be mined and the thickness of
overburden to be removed.
Based on soils boring information, the topsoil and overburden is estimated to range in depth
of approximately 6 inches to 6 feet thick. The sand and gravel resource is an alluvial deposit
that ranges in thickness from approximately 20 to 40 feet, averaging approximately 30 feet.
Refer to Exhibit I of the Division of Minerals and Geology 112 Reclamation Permit application
for the boring information.
h. The proposed use of reclaimed lands and an explanation of the reclamation process.
Per the landowners' request, the Parker property (Phases 1 and 2) will be backfilled to create
pastureland. Please refer to the Reclamation Plan map for the proposed seed mix that was
developed in consultation with the Soil Conservation District. The former Dersham property
(Phase 3) will be reclaimed to a slurry wall lined water storage reservoir, due to the high
demand for water storage facilities along the Front Range.
As the excavation progresses, the operator will backfill previously mined areas. The
reservoir will be created with overburden material by using front-end loaders, bulldozers,
compactors and similar equipment. Final grading will create a topography that is appropriate
for the final land uses. There will be a maximum 3:1 side slope for the reservoir. The final
grading for the pasture will be similar to the existing pre-mining grades in the area.
Backfilling and grading will be completed as soon as feasible after the mining process has
been completed.
In the areas where revegetation is a part of the reclamation plan, the land shall be
revegetated in a manner that establishes a diverse, effective and long-lasting vegetative
cover that is capable of self-regeneration without continued dependence on irrigation or
fertilizer and is at least equal in extent of cover to the natural vegetation of the surrounding
area. Please refer to the Reclamation Plan Map and the Landscaping Plan Map for the
proposed seed mix and plantings and additional information about the reclamation plan.
Please also refer to Exhibit E—Reclamation Plan of the DMG 112 Reclamation Permit
application for further details.
i. The source of technical advice in that type of reclamation for open cut mining land.
Hall-Irwin Corporation has significant experience in both creating water storage reservoirs
and pastureland. The are currently operating numerous mining operations throughout the
Front Range, including the Firestien Resource (USR 1125), Baseline Resource (USR 1172),
LaPoudre Resource (USR 00571), Centennial Resource (permitted through the Town of
Milliken), Jo Dee Resource, and the Herbst Resource, which received a reclamation award
from the Division of Minerals and Geology. They will work with civil engineers to design and
construct the slurry wall, which must be bonded and approved by the Division of Minerals
and Geology prior to construction. We have also consulted with the Southeast Weld County
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-2
Soil Conservation District about the proposed reclamation practices and the proposed seed
mix and plant materials.
2. A statement which explains how the proposal is consistent with the Weld County
Comprehensive Plan.
This application is consistent with the Weld County Comprehensive Plan. The mining operation
will promote the following goals and policies:
CM.Policy 1: Access to future mineral resource development areas should be considered in all
land-use decisions in accordance with Colorado State Law. No Weld County governmental
authority which has control over zoning shall permit the use of any area known to contain a
commercial mineral deposit in a manner which would interfere with the present or future
extraction of such deposit by an extractor. This property is situated within one of the principal
aggregate deposits in the County. According to the Weld County Sand, Gravel Resources Map,
the resource is classified as Fl —floodplain deposit of relatively clean and sound gravel.
CM.Goal 2: Promote the reasonable and orderly development of mineral resources.
CM.Goal 3: Minimize the impact of surface mining on surrounding land uses, roads and
highways. The operator will minimize the impact of the mining operation by using an existing
mining operation's processing area to wash, screen, sort and haul the final products and to
minimize truck traffic from the site. The operator has also developed a landscape plan and a
dust abatement plan to minimize the impact on surrounding land uses. Mining is a predominant
use in this area because it is so close to the South Platte River.
CM.Goal4: Minimize hazardous conditions related to mining activities and the mining site. The
applicant will comply with federal, state and local regulations.
CM.Goal 5:Provide for timely reclamation and reuse of mining sites in accordance with the
Comprehensive Plan, Subdivision and Zoning Ordinances. The operator will mine and reclaim
the site concurrently to provide for timely reclamation. This site will be reclaimed into a water
storage reservoir and pastureland, The proposed final land uses (water storage reservoir,
pasture land, future development) are consistent with the Weld County Comprehensive Plan and
the subdivision and zoning ordinances.
3. A statement which explains how the proposal is consistent with the intent of the district in
which the use is located.
This property is located in the Agricultural District. The Weld County Land Use Code states that
"the A (Agricultural) Zone District is also intended to provide areas for the conduct of Uses by
Special Review which have been determined to be more intense or to have a potentially greater
impact than Uses Allowed by Right." Gravel mining and mineral resource extraction are included
as permitted uses under this category.
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-3
4. If applicable, a statement which explains what efforts have been made, in the location
decision for the use,to conserve productive agricultural land in the A zone district.
This site was selected because of the significant gravel resource underlying the property.
According to Savage and Savage, who conducted a vegetation assessment of the site, "There
are no native vegetation communities extant on the parcels. Both parcels contain vegetation that
can be categorized as mesic/xeric introduced ruderal herbaceous seral. The visually dominant
species include whitetop, Canada thistle, annual mustards and curly dock." The proposed
reclamation plan will help to conserve and improve agricultural land by removing the invasive
species and replanting the proposed pastureland (Phases 1 and 2) with native species when
possible. Refer to Exhibit J—Vegetation Information from the DMG 112 Reclamation Permit
Application for additional details.
5. A statement which explains there is adequate provision for the protection of the health,
safety and welfare of the inhabitants of the neighborhood and the County.
Hall-Irwin Corporation will mine and reclaim the site in a manner that is consistent with federal,
State and County regulations that have been created to protect the health, safety and welfare of
the inhabitants of the neighborhood and the County. For example, the operator will abide by a
Dust Abatement Plan, obtain necessary Air Pollution Emission Notices from the Colorado
Department of Public Health and Environment—Air Quality Control Division, meet State
standards for noise emissions and limit noise emissions by using conveyors, and develop and
comply with a Stormwater Management Plan.
6. A statement describing the existing surrounding land uses and explaining how the
proposal will be compatible.
The surrounding land uses in the vicinity include farmland, industrial land, rural residences, and
several other gravel operations. This use will be compatible with the uses in the area because
mining is one of the primarily uses in the area: Hall-Irwin's Baseline Resource is adjacent to the
east, Aggregate Industries and Apex have operations to the north and south. In addition, the
operator will place overburden and topsoil stockpiles along the perimeter of the mining
operations to help screen views into the property while it is being mined.
7. A statement describing the existing land use.
The property is currently being used as pastureland for horses and rural residences.
8. Describe, in detail, the following:
a. How many people (employees, visitors, buyers, etc.)will use this site?
Hall-Irwin Corporation anticipates that there will be a maximum of two shifts and twelve
employees working on this site. The employees include: equipment operators; managers;
drivers; equipment mechanics; maintenance, administrative and sales personnel. There will
also be visitors, buyers, etc. using the site on a random basis. Refer to the traffic study
conducted by Gene Coppola for details.
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-4
b. What are the hours of operation?
The site will be operated during daylight hours except for public/private emergencies and
repair and maintenance activities. The hours may be extended for specific purposes.
c. What type and how many animals, if any,will be on this site?
There will not be any animals associated with this project.
d. What kind (type, size,weight) of vehicles will access this site and how often?
We do not anticipate that this site will generate additional vehicle traffic as all processing and
batching will occur on the already permitted Baseline site. This site will simply provide
additional resource to supplement the Baseline operation. However, Hall-Irwin would like the
ability to import material to the Parker Dersham Resource.
e. Who will provide fire protection to the site?
Fire protection will be provided by the Brighton Fire Protection District.
f. What is the water source on the property? (Commercial well or water district).
No water will be needed for the mining operation as the material will be processed at the
adjacent Baseline operation. Employees will use bottled water. Refer to Exhibit G for
additional details about the water requirements on the property.
g. What is the sewage disposal system on the property? (Existing and proposed).
There are existing sewage disposal systems for the homes on the property. The applicant
will use an on-site septic system for the office/scale house and portable restrooms for
employees during mining. The home and structures associated with Phase 3 will be
removed.
h. If storage or warehousing is proposed, what type of items will be stored?
There will not be storage or warehousing associated with this project.
i. Explain where storage and/or stockpile of wastes will occur on this site.
See attached Mining Plan Map.
j. Explain the proposed landscaping/screening for the site. The landscaping shall be
separately submitted as a landscape plan map as part of the application submittal.
Please refer to the attached Landscape Plan Map.
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-5
k. Explain how long it w ill take to construct this site and when construction and
landscaping is scheduled to begin. •
Please refer to Exhibits D and E of the Division of Minerals and Geology Application.
I. Explain any proposed reclamation procedures when termination of the Use by Special
Review activity occurs.
Please refer to Exhibits E and F of the Division of Minerals and Geology Application.
m. Explain how the stormwater drainage will be handled on the site.
Hall-Irwin will prepare a Stormwater Management Plan pursuant to the Colorado Department
of Public Health and Environment, Water Quality Control Division regulations prior to mining.
n. Method and time schedule of removal or disposal of debris,junk and other wastes
associated with the proposed use.
Hall-Irwin will remove and dispose of waste or other debris according to State and local
regulations. The debris will be removed prior to the beginning of mining in each phase.
o. A statement delineating the need for the proposed use.
Aggregate is a fundamental construction material that is used to build roads, foundations,
driveways, walls, floors, even countertops and sinks. According to Colorado Rock Products,
every person consumes an average of 10.5 to 11.5 tons of aggregate annually (Colorado
School of Mines Study for Jefferson County). The average 2,000 square foot home requires
400 tons of sand, gravel and construction aggregates (Source: Mineral Information Institute).
Because this natural resource is limited in supply and location, Colorado Revised Statutes
1973, Section 34-1-302(1) prohibits the use of any property located within an area
designated in the Colorado Geological Survey Atlas of Sand, Gravel, and Quarry Aggregate
Resources Colorado Front Range Counties, Revised 1975, as containing mineral deposits in
a manner that would interfere with the present or future extraction by an extractor of a
commercial mineral deposit.
p. A statement which explains the Use by Special Review area is not located in a
floodplain, geologic hazard and Weld County Airport overlay district area; or that the
application complies with Chapter 23,Article V, Overlay District Regulations as
outlined in the Weld County Code.
This property lies within the South Platte River floodplain (FIRM map panel number 080266
0995 C, dated September 28, 1982). In accordance with Weld County Zoning Ordinance, a
Flood Hazard Development Permit Application will be submitted.
Hall-Irwin Corporation—Parker/Dersham Resource—Weld County Use by Special Review Permit Application
Questionnaire-6
Page 1 of 4
Jacqueline Hatch
From: Danna Ortiz [Danna@CivilResources.com]
Sent: Tuesday, April 17, 2007 8:45 AM
To: Jacqueline Hatch
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Correct—thank you for asking!
From: Jacqueline Hatch [mailto:jhatch@co.weld.co.us]
Sent: Monday, April 16, 2007 3:56 PM
To: Danna Ortiz
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Danna,
Just to make sure. There is no landscaping sales yard on this USR?
From: Danna Ortiz [mailto:Danna@CivilResources.com]
Sent: Monday, April 16, 2007 3:24 PM
To: Jacqueline Hatch
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Thank YOU!
-D
From: Jacqueline Hatch [mailto:jhatch@co.weld.co.us]
Sent: Monday, April 16, 2007 7:39 AM
To: Danna Ortiz
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Danna,
I have set up the Recorded Exemptions and Amendments. The deeds will need to be
submitted prior to recording of them.
I have been out of town and hope to look through the USR packets today. I do know that
someone came in on Wednesday and made changes I just haven't had a chance to take a
look at them.
Talk to you soon
Jacqueline
From: Danna Ortiz [mailto:Danna@CivilResources.com]
Sent: Friday, April 13, 2007 2:07 PM
To: Jacqueline Hatch
Subject: FW: Parker Dersham, AMRE, AMSE, and RE
Happy Friday the 13th!
04/17/2007
Page 2 of 4
Just checking in to make sure you knew that Teresa replaced all the maps in our submittal for Parker-Dersham on
Wednesday.
Have you had a chance to think about the deed issue - may we proceed?
Thanks! Danna
From: Danna Ortiz [mailto:Danna@CivilResources.com]
Sent: Monday, April 09, 2007 2:18 PM
To: 'Jacqueline Hatch'
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
I'm going to send you 2 e-mails so that we don't have any issues with file sizes. You had pointed out the problem
with the deeds when we sat down in your office. (Basically the previous exemption plats had the wrong legal
descriptions on them, and those incorrect legal descriptions were used for the deeds.) It was my understanding
that you were going to allow us to have a condition of approval that the deeds had to be revised before the recorded
exemptions could be recorded. I've redlined the map and the deed so you can see the problem.
I'm not sure what you're pointing out about Mr. Muhler. I'll look at the map and get back to you on that one.
Thank you Jacqueline.
Danna
From: Jacqueline Hatch [mailto:jhatch@co.weld.co.us]
Sent: Monday, April 09, 2007 1:43 PM
To: Danna Ortiz
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Oh also.. I noticed on all the maps that Mr. Muhler Lot A of RE-4290 is included on the maps
but nothing else. Is it supposed to be? If not you can come on in and red mark them out.
Thanks —just let me know.
Jacqueline
From: Danna Ortiz [mailto:Danna@CivilResources.com]
Sent: Monday, April 09, 2007 1:21 PM
To: Jacqueline Hatch
Subject: RE: Parker Dersham, AMRE, AMSE, and RE
Hmm...let me see what's going on. I'll get back to you ASAP.
- D
From: Jacqueline Hatch [mailto:jhatch@co.weld.co.us]
Sent: Monday, April 09, 2007 10:57 AM
To: Danna Ortiz
Subject: Parker Dersham, AMRE, AMSE, and RE
Danna,
I am trying to set up the cases and noticed that I still need a current deed for the 2nd Amended
Recorded Exemption for Lot Holding Investments. The deed is calling out Lot A of RE-2070
04/17/2007
Page 3 of 4
and should state Lot B of AMRE-4290. I also need a new deed for Lot Holding Investments for
the 2nd Amended Subdivision Exemption. The deed is calling out SE-656 and it should state
Amended SE-656.
I also wanted to make sure since there are a handful of deeds in the USR application that
these are the three lots involved in the USR application
1. Parker lot—described as Lot B RE-1352
2. Lot Holdings — described as Lot B AMRE-4290 (soon to be 2nd AMRE-4290)
3. Lot Holdings — described as AMSE-656 (soon to be 2nd AMSE-656)
I won't be able to set up the cases until the deeds are submitted.
Thanks and let me know if you have any questions
Jacqueline
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04/17/2007
CIVIL RES'PURCES, LLC
ENOtNEER$ & PLANNERS
April 2,2007
Ms.Jacqueline Hatch
Weld County Department of Planning Services
918 10th Street
Greeley, CO 80631
RE: Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource
Use by Special Review Application#1553
Dear Ms. Hatch:
Please withdraw Hall-Irwin Corporation's Use by Special Review Application #1553 as we are submitting a new
application.
Sincerely,
CIVIL RESOURCES, LLC
Danna Ortiz
Planner
C: Jeff Gregg,Hall-Irwin Corporation
J:1Halllrwin\Parker-Dershamlwekl GountytUSR submittal Feb 200AUSR withdrawal Itr.doc
451 OAK STREET, SUITE 209 • P.O. Box 680 • FREDERICK, CO 80530♦ (303) 833-1 41 6 • 1303) 833-2850 - FAX
P\pc DO07
'eralchctile0cu' ,4c5K \
r te:ti) \fil,AM\ Ctipclic4esc:) 4.[SE,5
-1;kt (elvOcc4:\toi
J
yo0 .Li6Wa 9')(
WELD COUNTY ROAD ACCESS INFORMATION SHEET
Weld County Department of Public Works
1 111 H Street,P.O. Box 758, Greeley, Colorado 80632
Phone: (870 )356-4000, Ext. 3750 Fax: (970) 304-6497
Road File 0:______ ______ _________ Date:
RE # :---____ ---------------- Other Case #:__._ -- --1. Applicant Name,/ L- TRL,-t.) LO12,go1ZA77oN Phone a 557,12-00
Address 01 CcrnitylrVcx.1 1)1,Lye., City VY11! Syr, State CO Zip &)$3
2. Address or Location of Access E4S4 O 11515 (1..tc, t2. a
Section 3(..p Township IN..._ Range 1,7(A) Subdivison Block Lot-__-
Weld County Road #: 2 Side of Road Per rl Distance from nearest intersection 111.0004.
(AY-P4 B0.SQ t+r- R.oa-d ov Rot"-Porc) /
3. Is there an existing access to the property? Yes_ No t/ #of Accesses Q
4. Proposed Use:
lid Permanent 0 ResIdentIal/Agricultural° Industrial
❑ Temporary ❑ Subdivision 0 Commercial a Other YYtinrr%4t ac} gcCcosor uses,.
****************************************************************************************************
6. Site Sketch
Legend for Access Description:
AG = Agricultural
RES = Residential
O&G = Oil &Gas �� /or.
D.R. = Ditch Road NQW 12teortled EXOrxelon
n G HousAt
Shede * of t3''<j rProposed Access N
13dseitnt
= Existing Access N j2cSaxlcc r galtne
!1 OS RNi
RE 4zAOAN1 ,Access
Ck4vGyd � 1! _R1
Prep 6 55 C95-6,k h
.E. 4216 Am r *too& i
******************************** `"
OFFICE USE ONLY: �
Road ADT Date Accidents Date
Road ADT Date Accidents Date
Drainage Requirement — Culvert Size Length _
Special Conditions
0 Installation Authorized U Information Insufficient
Reviewed By: Title:
11
14-0i-2006 12:22pm From-HALL IRW. RP +9703526204 T-036 P.001/001 F-445
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Ramon
1313 Sherman A.,Room 215 COLORADO
Dever Colorado 80203 1-4 DM V[S I INE O N O F
RALS
Phone D @T � � t
03)866-35671pL1�t`
FAX:po3l e32at06 ,l A GEOLOGY
JUN g 3 1096 RI MAN_TIGN•NININC
•acIENCI
BM moan
June 20,2006 CAR sear
Rev ell Comae
Mr.Jeff Gregg Eno wive Dream
Hall-Irwin Corporation ace saw Cattany
301 Centennial Dr. Div lion Dinner
Milliken,CO 80543 Net war Resource Trustee
•
Re: File No. M-2006-003, Parker-Dershaaa Resource, 112c Decision Letter - Financial an i Performance
Warranty Request-Construction Material Operation
Dear Mr..Gregg:
On June 14,2006,the Division of Minerals and Geology approved your 112c mining permit application.
The amount of financial warranty set by the Division for this operation is$974,000.00. The estimate is enclosed for your
review. You must submit a financial warranty in this amount and a performance warranty in order `or us to issue a
permit. In the event you have requested a financial warranty form,we have enclosed it in this letter. If you have not,
please select a type of financial warranty from Rule 4.3. Then contact us so that we can provide you wit u the appropriate
warranty form or you can obtain the form from our web site located at http-/lmining etaTP ro us/ We have enclosed a
performance warranty form with this letter for your usc.
PLEASE NOTE THAT MINING OPERATIONS MAY NOT COMMENCE UNTIL A PERM IT HAS BEEN
ISSUED BY THE DIVISION A n rB RECEIPT OF YOUR FINANCIAL WARRANTY AND Pk RFORMANCE
WARRANTY. A PERMIT WILL NOT BE ISSUED UNTIL WE VERIFY THE ADEQUACY O1?BOTH YOUR
FINANCIAL WARRANTY AND PERFORMANCE WARRANTY.
If you have any questions,please contact me at(303)866-4943.
S' ,
6/l,l(JV
Erica S.Crosby
Environmental Protection Specialist
Enclosures;Performance Warranty&DMG Reclamation Cost Estimate
cc: Carl Mount DMG
Daiwa Ortiz,Civil Resources w/enclosures
-2-
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines C Magical Survey
STATE OF COLORADO
^ DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St.,Room 215 COLORADO
Denver,Colorado 80203 DIVISION OF
Phone:(303)866-3567 MINERALS
FAX:(303)832-8106 CONSTRUCTION MATERIAL GEOLOGY
A[CLAMATION•MWIN6
IMETY•SCI[NCF
REGULAR(112)OPERATION
RECLAMATION PERMIT APPLICATION PACKAGE Bill Owens
Governor
Russell George
Executive Director
Ronald W.Cattany
APPLICABILITY: DMsion Director
Natural Resource Trustee
This application package is for a construction materials operation which affects 10 acres or more.
If you plan to conduct a construction materials extraction operation which meets these criteria,please follow the instructions
provided in this package, in the Rules and Regulations, and in the Colorado Land Reclamation Act for the Extraction of
Construction Materials,as required.
RECOMMENDATIONS PRIOR TO FILING:
The Construction Material Rules and Regulations (the Colorado Land Reclamation Act for the Extraction of Construction
Materials,Section 34-32.5-101,et seq, C.R.S.,and 2 CCR 407-1)and the Colorado Mined Lend Reclamation Board(the"Board")
regulate the permitting,operational and reclamation requirements for all construction material extraction operations in Colorado. It
is your obligation to comply with the Act and Regulations. You are encouraged to obtain and review a copy of the Rules,available
for $8.00 from the Division of Minerals and Geology (the "Office"). In order to submit your application properly, it is
^ recommended that you review the Act and:
Rule 1.1 Definitions;
Rule 1.4.1 Application Review and Consideration Process;
Rule 1.4.5 Specific Requirements for Regular 112 Operations;
Rule 1.6 Public Notice Procedures;
Rule 3.1 Reclamation Performance Standards;
Rule 3.3.1 Operating without a Permit-Penalty;
Rule 4 Performance Wan-antics and Financial Warranties;
Rule 6 Permit Application Exhibit Requirements;
Rule 6.2 General Requirements of Exhibits;
Rule 6.4 Specific Permit Application Exhibit Requirements;and
Rule 6.5 Geotechnical Stability Exhibit.
It is recommended that you contact the agencies listed in the application section titled "Compliance With Other Laws"prior to
submitting the application to the Office
Office of ice of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey
-ii-
FILING REQUIREMENTS:
In order to apply for a Reclamation Permit for a Regular 112 Operation,please provide:
o One (1) signed and notarized completed ORIGINAL and one(1)copy of the completed original Regular 112
Operation Application Form. ORIGINAL SIGNATURES MUST BE DONE IN BLUE INK.
o Two(2)copies of Exhibits A-S(required sections described in Rule 6).
• Two(2)copies of Addendum 1 -Notice requirements(described in Rule 1.6.2(1)(b)).A sample of this notice is
attached for your use.
o The Geotechnical Stability Exhibit when required by the Division.
o The application fee.
The ninety(90)day period for review of the application and exhibits will NOT begin until all required information and fee are
submitted. The Office will then review the submitted information for adequacy.
NOTICE REQUIREMENTS:
_ 1. You MUST send a notice,on a form approved by the Board,to the local board of county commissioners. A copy
of this"Notice of Filing Application"form is attached for your use.
1 If the mining operation is within the boundaries of a conservation district, send a notice to the board of
supervisors of the conservation district,PRIORto filing the application. A copy of this"Notice of Filing Application"
form is attached for your use.
3. You MUST include proof of notice#1 and#2 above with the application at the time the application is submitted
to the Office for filing(Rule 1.6.2(l)(g)).
4. PRIOR to filing the application,place for public review a copy of the application,less confidential items,with the
clerk or recorder of the county or counties in which the affected land is located.
5. You MUST include an affidavit or receipt demonstrating that the application was filed with the county clerk or
recorder at the time the application is submitted to the Office for filing.
6. Any changes or additions made to an application submittal MUST be filed with the county clerk or recorder. You
MUST also provide the Office with an affidavit or receipt demonstrating that the change was filed with the county clerk
or recorder no later than the close of business on the day the change was filed with the Office(Rule 1.8.1(2)).
7. Within ten(10)days after your application is considered filed,you must publish four times in a newspaper of
general circulation,in the locality of the proposed mining operation,the notice described in Rule I.6.2(Ixd).
8. In addition, after the first publication you must mail or personally serve a copy of the notice described in
Rule I.6.2(I)(d)to all owners of record of surface rights to the affected land and all owners of record of lands that are
within 200 feet of the boundary of the affected land(Rule 1.6.2(1)(e)). A copy of a form which includes all required
information for the notice is attached for your use.
I
-
9. Prior to the Office making a decision(consideration of the application),you MUST submit a copy of the proof of
publication from the newspaper and proof of all required notices. Proof of the notices may be by submitting copies of
return receipts of a certified mailing or by proof of personal service(Rules 1.4.1(4), I.4.2(4)(c), 1.6.2(I)(a)(ii),and
1.6.2(I)(g)).
The copy of the application and any changes or additons placed at the office of the county clerk or recorder shall NOT be recorded,
but shall be retained there for at least sixty (60)days after a decision on the application by the Office and be available for
inspection during this period. At the end of this period, the application may be reclaimed by the applicant or destroyed
(Rule 1.6.2(2)).
APPLICATION REVIEW PROCEDURES:
The Office shall approve or deny the application within ninety(90)days of filing unless the date for consideration by the Office is
extended pursuant to Rule 1.8. The time for consideration shall not be extended beyond ninety(90)days after the last such change
submitted. For complex applications,the review period may be extended an additional sixty(60)days. Please see Rule 1.1(10)for
the definition of what constitutes a complex application.
APPLICATION APPROVAL/DENIAL:
If the requirements of the Act and Mineral Rules have been satisfied,the Office will approve the application. The Act also
provides for automatic approval if no action is taken by the Office by the end of the review period.
If the Act and Regulation requirements have not been satisfied,the Office will deny the application. If the Office denies the
application,you may appeal to the Board for a final determination by submitting a written request for administrative appeal to the
Board within 60 days of the decision date (Rule 1.4.7).
PERFORMANCE AND FINANCIAL WARRANTIES:
A performance warranty, and a financial warranty dollar amount determined during the application review process, must be
submitted and approved by the Office PRIOR to permit issuance. A financial warranty should NOT be submitted until a decision
on the application has been made. If the applicant is a unit of state or county government,then ONLY a performance warranty is
required.
Several different types of financial warranties are allowed by the law. Please review Rule 4.0 to determine which type of financial
warranty you desire to use. You may obtain the appropriate warranty forms from the Office during the application review period.
Please note that an application approval DOES NOT convey a right to begin operations. You MUST submit,and haveaporoval of
your performance and financial warranties,and receive your cony of the signed permit document PRIOR to beginning on-site
mining activity
AUTOMATIC PERMIT APPROVAL:
An automatic approval will occur where the Office fails to notify the applicant/operator that the application has been denied This
decision must be made ninety(90)calendar days from the date the application was determined to have been filed. However,the
performance and fmancial warranties must be submitted and approved by the Office before the permit will be issued even if you
receive an automatic approval. NO MINING OPERATIONS SHALL BEGIN UNTIL A PERMIT IS ISSUED
(Section 34-32.5-109(1),C.R.S.).
I
-iv-
COMPLIANCE WITH OTHER LAWS:
Compliance with the Act and Rules and Regulations of the Mined Land Reclamation Board DOES NOT relieve you of your
responsibility to comply with all other applicable state and federal laws. We recommend that you contact the following agencies to
determine whether you need to comply with their legal requirements:
o The Colorado State Historical Preservation Office regarding properties of historical significance including the need for an
archeological survey,procedures for requesting a file search,and inventory forms to identify structures.
o Colorado Division of Water Resources with regard to water rights;
o Colorado Department of Health,Water Quality Control Division,with regard to the discharge of pollutants into the State
waters;
o Colorado Department of Health,Air Pollution Control Division,with regard to the need for a fugitive dust permit;
o U.S.Bureau of Land Management or the U.S.Forest Service if the proposed operation will occur on federal lands;
o U. S.Army Corps of Engineers regarding a dredge and fill(404)permit;and
o The County Planning Department for the county or counties in which your proposed operation is located.
Section 34-32.5-109(3),C.R.S,requires a mining operator to be responsible for assuring that the mining operation and the
post-mining land use comply with local land use regulations and any master plan for extraction adopted pursuant to
Section 34-1-304,C.R.S. ^
COMPLETION OF MINING:
Upon completion of any phase of reclamation,you should consult Rule 3.1 for reclamation standards and 4.16 for details on how to
request a reclamation responsibility release from the Board,
MimiaWeMvSam!Canh°cllm I12.dac(Approved 05/11/2005)
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman SL,Room 215 COLORADO
Denver,Colorado 80203 DIVISION OF
Phone:(303)866-3567 CONSTRUCTION MATERIALS MINERALS
FAX:(303)832-8106 REGULAR(112)OPERATION GEOLOGY
RECLAMATION PERMIT APPLICATION FORM AEEAAETY•fGWCENC
Rill Owens
Governor
CHECK ONE: There is a File Number Already Assigned to this Operation Russell George
Permit# M (Please reference the file number currently assigned to this operation) Executive Director
RonX New Application(Rule 1.4.5) Amendment A lication(Rule 1.10) iio w'Oaaam
PP Division Director
Conversion Application(Rule 1.11) Natural Resource Trustee
Permit# n4 - - - (provide for Amendments and Conversions of existing permits)
The application for a Construction Materials Regular I)2 Operation Reclamation Permit contains three major parts:(I)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 you
application,be sum to include one(I)complete signed and notarized ORIGINAL and one(I)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 II"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.
I. Applicant/onerator 9r company name(name to be used on permit): ' IQ.E I - t N ( r)t-po cal-to N
1.1 Type of organization(corporation,partnership,/etc.): (CD rpeQa-ho .J "
2. Operation name(pit,mine or site name): PO —Da2SL'taiii eeesoote.c
3. Permitted acreage(new or existing aitej: permitted acres
3.1 Change in acreage(+) acres
3.2 Total acreage in Permit area 52.3 acres
4. Fees:
4.1 New Application $2344.00 application fee
4.2 New Quarry Application $2,906,00 quarry application
4.4 Amendment Fee $1,938.00 amendment fee
4.5 Conversion to 112 operation(set by statute) S2,344.00 conversion fee
5. Primary commoditie(s)to be mined: ,5'R AC 1314V el
5.1 Incidental commoditie(s)to be mined: I. - Ibs/Tons/vr 2. / Ibs/I'ons/vr
3. / Ibs/fons/}r 4. / Ibs/Tons/yyr 5. / lbs/fons/vr
5.2 Anticipated end use of primary commoditie(s)to be mined: am ri1 slrciCfid ti 4laltet.eai
5.3 Anticipated end use of incidental commoditie(s)to be mined:
r
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey
-2- II /�
6. Name of owner of subsurface rights of affected land: re-Per +O fx.kthla- D .-.
If 2 or more owners,"refer to Exhibit O". // /
7. Name of owner of surface of affected land: _L O# A/Ch pq T-Mies fiewll&1 LLC, tb/e✓!ee 4 er-i grin,_
X8. Type of mining operation: Surface Underground
9. Location Information: The center of the area where the majority of mining will occur:
COUNTY: w turd
PRINCIPAL MERIDIAN(check one): X 6th(Colorado)/ _I0th(New Mexico) _Ike
SECTION(write number): S 3 tP
TOWNSHIP(write number and check direction): T J North _South
RANGE(write number and check direction): R &7 East X West
QUARTER SECTION(check one): NE _NW SE _SW
QUARTER/QUARTER SECTION(check one): NE _NW SE X SW
GENERAL DESCRIPTION:(the number of miles and direction from the nearest town and the approximate elevation):
A'rroxttltafe(y . 95tsar/es u/esd- OP 13A kitty ?Con 1%se!:Ne. ROACI OM 4 /9ueaue1
Ju5+' Nor-N4 a-P -u e Cay o-P 86.5k-10,J, eleva-00p 469 vs t 1
10. Primary 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 min see (2 decimal places)
Longitude(W): deg min sec (2 decimal places)
OR
Example: (N) 39.73691°
(W) -104.98449°
Latitude(N) T O .00).08 (5 decimal places)
Longitude(W) — )04 . 338.33 (5 decimal places)
OR
Universal Tranverse Mercator(UTM)
Example: 201336.3 E NAD27 Zone 13
4398351.2 N
UTM Datum(specify NAD27,NAD83 or WGS 84) Zone
Easting
Northing
-3 -
I I Correspondence Information:
APPLICANT/OPERATOR (name,address,and phone of name to be used on permit)
Contact's Name: ec re3g Title: ge50 U - S J na G c r
Company Name: lin It/ - t&i/11 CC)fp0-0-4Ian�
Street/P.O.Box: 30/ Cen-fen n is I Dr;✓e. P.O.Box:
City: MI (Piker-) _.
State: (bib raclo Zip Code: S"0 5 LI 3
Telephone Number: ( 70 )- 5'8°7 - 7 aoo
Fax Number: ( 9-P )-_-35a- !,a-8 y
PERMITTING CONTACT (if different from applicant/operator above)
Contact's Name: ban/l a 0 r Tt Z Title: Ple n n e t.
Company Name: e v ge 5 o J i2C es
Street/P.O.Box: I5 ) 04k S'ty S4e- 20C P.O.Box: (QgD
City: a ede rick
State: C-O Zip Code: 8"053 0
Telephone Number: ( 3D 3 )- £3 3
Fax Number: f 363 )- 8'33 - a$'S-0
INSPECTION CONTACT
Contact's Name: Gregg/1 Title: 2PSD UaCes IQ nq aJ e
Company Name: }-14II �YW�N 00(e0fCc[inn-
Street/P.O.Box: 3D�-_ Ctiffenn i s( Dr i J c P.O.Box:
City:
State: (/c?1 D{a d . Zip Code: 805 y_3 y
Telephone Number: ( (4?D )- 58 7 - 7.ZD C
Fax Number: ( (170 )- 3Jr' L ag y
CC: STATE ORFEDERAL LANDOWNER(if anyl
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. Primary future(Post-mining)land use(check onel:
Cropland(CR) 4 Pastureland(PL) _ General Agriculture(GA)
Rangeland(RL) Forestry(FR) WildlifeHabitat(WL)
Residential(RS) Recreation(RC) _ Industrial/Commercial(1C)
Developed Water Resources(WR) Solid Waste Disposal(WD)
13. Primary present land use(check onel:
_ Cropland(CR) .T Pastureland(PL) _ General Agriculture(GA)
Rangeland(RL) Forestry(FR) _ Wildlife Habitat(WL)
Residential(RS) Recreation(RC) _ IndustriaUCommercial(1C)
Developed Water Resources(WR) L y,
14. Method of Mininv: Briefly explain mining method(e.g.truck/shovel): I f5+Q I i ckuxxte rl�n q "1 rev4 around
Qerimefer) dry m1Ne )sting $crarrs rho 11 viozets / 77onf'-end loadr2s or
sin); lay e p en-{- V
15. On Site Processing:LL VV Crushing/Screening
13.1 Briefly explain mining method(e.g.truck/shovel): /)'M: a-Ij e r 14 IS i t1' I I D r (M q r 1 y be CO /c/ a cl
-to tdjc ctn-C thselk&e �)esowtee- 4-bb� processeJ • /
List any designated chemicals or acid-producing materials to be used or stored within permit area: ND fJ C
16. Description of Amendment or Conversion:
If you are amending or converting an existing operation,provide a brief narrative describing 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 I,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 Xb):
EXHIBIT A Legal Description
EXHIBIT B Index Map
EXHIBIT C Pre-Mining and Mining Plan Map(s)of Affected Lands
EXHIBIT D Mining Plan
EXHIBITE Reclamation Plan
EXHIBIT F Reclamation Plan Map
EXHIBIT G Water Information
EXHIBIT H Wildlife Information
EXHIBIT I Soils Information
EXHIBIT J Vegetation Information
EXHIBIT K Climate Information
EXHIBIT L Reclamation Costs
EXHIBIT M Other Permits and Licenses
EXHIBIT N Source of Legal Right-To-Enter
EXHIBIT O Owners of Record of Affected Land(Surface Area)and Owners of Substance to be Mined
EXHIBIT P Municipalities Within Two Miles
EXHR3IT Q Proof of Mailing of Notices to County Commissioners and Conservation District
EXHIBIT R Proof of Filing with County Clerk or Recorder
EXHIBIT S Permanent Man-Made Structures
Rule 1.6.2(1)(b) ADDENDUM I -Notice Requirements(sample enclosed)
Rule 6.5 Geotechnical Stability Exhibit(any required sections)
The instructions for preparing Exhibits A-S,Addendum I, 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 pennittee, should filly 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 not
erstand 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 fmancial 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;
I
-6-
2. The Board may suspend or revoke this permit,or assess a civil penalty,upon a finding that the pennittee violated
C.
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 pemtittee can result;
i 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;
\t_
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
C 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 I, 1995,the annual fee is for the period of July I, 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.
P mit Condition:
A reportable spill is a spill of any toxic or hazardous substance(including spills of
mined land permit area reportable to P petroleum products) the
p any Division of the Colorado Department of Public Health and the Environment,the
National Response Center,the Colorado Emergency Planning Commission,any local Emergency Planning Commission,
local Emergency Planning Committee,or the State Oil Inspector. The Mine Operator shall notify the Division of Minerals
and Geology(DMG)of a reportable spill within the mined land permit area using the same timeframe required by the
permit,license, notice, statute,rule or regulation governing the reporting of the spill to the other appropriate agency.
Notice of a reportable spill shall be FAXed to: Minerals Program Supervisor, Division of Minerals and Geology,
FAX(303)832-8106. The FAX shall include a call-back number of a responsible company official for DMG staff to use
as a contact.
-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 continents 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-I15(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.RS.)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&,of Me Colorado Land
Reclamation Act for the Extraction of Construction Materials. Any alteration or modrficahon of this formdhaf smiths imidbag any
permit issued on the altered ormodrredform and subjectthe operator to cease and desist orders and civilperreiltiesfor oporatbrgtvithord
a permit pursuant to section 34-32.5-123,CAS.
Signed and dated this Z( day of �I Zo
wS
lel
14O1 I e--.1Nwrv. ..Ta If Co
Applicant/0 tor or Company Name
� Corporation Attest(Seat)
52
Signed: Signeda
y Corporate Secretary or Equivalent
Title: 49c. en 5 II/LA .a,3 r- Town/City/County Clerk
State of M(oraAO )
)ss.
County of Wed— )
The foregoing instrument was acknowledged before me this 2/ S� day of :�i� o?00.5
by -JcP.-?-1 Co d as
��� V2aSn�.rco9 W1n�.t9Pr of J-��—Tri.JC..v eArPrvrn-kcw.
4*, •
010040 1i1 .
00.• • y 0 en•.14. No ry Public
•.N r
My Commission expires: /049//fig
•
SIGNA
_41.1E_41.1E INK
M:MinWuAwfomu\commies.I I2.doc(Approved 05/11/2005) Oct" 1d Ls 1`_
You must post sufficient Notices at the location of the proposed mine site to clearly identify the site as the location of a proposed
mining operation. The following is a sample of the Notice required for Rule 1.6.2(1)(6)that you may wish to use.
NOTICE
This site is the location of a proposed construction materials operation. (Name of the Applicant/Operator) Sec 0.tlacn e_el
whose address and phone number is(Address and Phone Number of the Applicant/Operator) See- o.l}ac h._8 ,Ms
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(County Name) See akkacl_d County Clerk and Recorder's Office,(Clerk
and Recorder's Office Address) Sec a_kka.c.L t_ ,and should send comments prior to the end of the public
comment period to the Division of Minerals and Geology, 1313 Sherman St,Room 215,Denver,Colorado 80203.
Certification:
hereby certify that I posted a sign containing the above notice for the proposed permit
n
area known as the(Name of Operation) 1 • er ;Jw n(Date Posted) �z S , ZC
� I
Z -S OS
SI. ATURE DATE
M:'min\ rehsfwm,\Cmmrvction 112dcc(Approved 05/11/2005)
EXHIBIT A- LEGAL DESCRIPTION
This information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.1 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
Parker Parcel:
A part of the Southwest one-quarter of the Northeast one-quarter of Section 36,Township 1 North,
Range 67 West of the 6th Principal Meridian, Weld County, Colorado, described as follows:
Beginning at the Northwest corner of the Southwest one-quarter of the Northeast one-quarter of
said Section 36;thence S89°51'15"E on an assumed bearing along the North line of the South
one-half of the Northeast one-quarter of said Section 36 a distance of 185.00 feet to the True Point
of Beginning;
Thence continuing S89°51'15"E along said North line a distance of 649.64 feet;thence
S00°23'08"W a distance of 1318.37 feet to a point on the South line of the South one-half of the
Northeast one-quarter of said Section 36;thence N89°52'10"W along said South line a distance of
825.77 feet to the Southwest corner of the Southwest one-quarter of the Northeast one-quarter of
said Section 36;thence N00°00'00"E along the West line of the Southwest one-quarter of the
Northeast one-quarter of said Section a distance of 624.58 feet; thence N88°48'52"E a distance of
167.00 feet;thence N07°40'45"W a distance of 328.29 feet; thence N00°34'41"W a distance of
82.55 feet;thence N12°32'04"E a distance of 289.08 feet to the True Point of Beginning.
Property contains 25 acres more or less.
(Former)Dersham Parcel(s):
(Lot B— 11585 Weld County Road 2)
Part of the Southeast 'IA of Section 36, Township 1 North, Range 67 West, of the 6th Principal
Meridian,Weld County, Colorado, described as Lot B of Recorded Exemption RE-4290.
Property contains 27.3 acres more or less.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit A• 1
EXHIBIT B - INDEX MAP
Please refer to the attached index map.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit B-1
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0 1000 2000 G� HALL-IRWIN CORPORATION ^-
lib.
CIVIL RE S'DU RC E5,LLC U
( IN FEET ) DATE: FIGURE:
05/2005 1 EXHIBIT B: INDEX MAP
EXHIBIT C - PRE-MINING AND MINING PLAN MAPS OF AFFECTED LANDS
Please refer to the attached Existing Conditions Map and Mining Plan Map.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit C-1
EXHIBIT D - MINING PLAN
This information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.4 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(a) Description of the method(s)of mining to be employed in each stage of the
operation as related to any surface disturbance on affected lands;
The proposed permit area includes a significant deposit of sand and gravel located in
the alluvium of the South Platte River in Weld County. The site is located on the east
side of Weld County Road 23.5 just north of the intersection of Weld County Road 2
(Baseline Road/168th Ave). It encompasses two parcels totaling approximately 52.3
acres. The existing Baseline Resource (M-97-058) site, operated by Hall-Irwin
Corporation, is directly adjacent to the proposed operation. The existing residence on
the Parker property, which is outside of the affected land boundary, will remain during
and after mining. This is denoted on the attached Mining Plan Map, please refer to
Exhibit C of this application.
The permit area will be mined in three phases: Phase 1 and 2 are on the Parker
property and Phase 3 is on the former Dersham property (please refer to the attached
Mining Plan Map in Exhibit C). Aggregate material mined under this permit will be
processed at the existing Baseline Resource operation (M-97-058).
This site is located within the 100-year floodplain of the South Platte River. Prior to
operating with the 100-year floodplain,the operator will obtain a Flood Hazard
Development Permit through Weld County.
Site Preparation:
Initial disturbance of the property will include: clearing the site of existing structures
(with exception of the structures to remain) and establishing the landscape sales yard.
Scrapers will strip the topsoil and overburden material and stockpile them separately
for use during site reclamation. Any excess material not needed for reclamation may
be sold or hauled off-site during the life of the mine.
Initial disturbance of Phase 3 will include installation of a slurry wall around the mining
area prior to exposure of groundwater in this Phase. Dewatering trenches will be
excavated down to bedrock to control groundwater in the active mining phase. Once
water levels are controlled through the dewatering system, the sand and gravel
material will be excavated down to bedrock using heavy equipment. Groundwater
collected in the dewatering trench will be discharged into the existing mine dewatering
system of the Baseline Resource site located directly adjacent to this permit area.
Currently the adjacent Baseline Resource site has a Stormwater Management Plan
and Spill, Prevention, Control and Countermeasures Plan. If deemed necessary by
the State of Colorado Department of Public Health and Environment and the Federal
Environmental Protection Agency, the existing Baseline Resource Plans will be
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit D- 1
modified to include the Parker/Dersham site. As committed in the "Permit Condition"
on page 6 of the Application Form, the applicant will notify the Division of Minerals and
Geology in the event of a reportable spill.
Mining:
The mining on this site will progress in three phases:
• Phase 1: The Phase 1 mining area, located on the Parker property, is
approximately 7 acres. This phase will be dewatered and dry-mined using
scrapers, bulldozers, front-end loaders, excavators, or similar type equipment.
Material excavated in this mine area will be transported by conveyor belt
system or haul truck to the processing area located at the adjacent Baseline
Resource processing plant. Mining will be from west to east in Phase 1.
• Phase 2: The Phase 2 mining area, also located on the Parker property, is
approximately 10 acres. This phase will also be dewatered and dry-mined
using scrapers, bull-dozers,front-end loaders, excavators, or similar type
equipment. Material excavated in this mine area will be transported by
conveyor belt system or haul truck to the processing area located at the
existing adjacent Baseline Resource processing plant. Mining will be from
west to east in Phase 2.
• Phase 3: The Phase 3 mining area, located on the former Dersham property,
is approximately 16.5 acres. A slurry wall will be constructed around this
mining area prior to exposing groundwater in this phase. This phase will be
dewatered and dry-mined using scrapers, bulldozers, front-end loaders,
excavators, or similar equipment. Material excavated in this mine area will be
transported by conveyor or haul truck to the Baseline Resource processing
area. Mining will be from southwest to northeast in Phase 3.
Processing:
All material mined under this proposed application will be transported by conveyor or
haul truck to the existing processing plant located at the Baseline Resource site
currently operating under MLRB permit#M-97-058.
Imported Material:
Hall-Irwin may import material from other sites to the Parker-Dersham site. The
applicant is aware that in accordance with Rule 3.t5(9)of the Construction Material
Rules and Regulations, if any offsite material is used as backfill, a notarized letter will
be submitted to the Division indicating the materials are inert. The applicant will supply
such a letter to the Division if, at the time of Reclamation, the applicant intends to use
off-site material as backfill.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit D•2
(b) Earthmoving;
Topsoil and overburden will be stripped with scrapers or bulldozers and stockpiled in
segregated piles at the top edge of the active mine phase. Excavators, front-end
loaders, and bulldozers will be used to mine and stockpile the saleable material on the
mine floor. Conveyor belts or haul trucks will be utilized to transport the raw material
from the active mine phase to southeast or east to the existing processing area
located at the Baseline Resource site. Phases 1 and 2 (Parker Property)will be mined
vertical and Phase 3 (former Dersham Property) will be mined at a 3H:1V slope.
(c) All water diversions and impoundments;and
Dewatering trenches surrounding the inside of the mine limit(pit)will control water
levels inside the active mine area of all Phases. Dewatering pumps will discharge
water from the dewatering trench to the Baseline Resource mine dewatering system,
located directly adjacent to the Parker/Dersham permit area.
A slurry wall will be installed around the Phase 3 area prior to mining.
(d) The size of area(s)to be worked at any one time.
The maximum area to be worked on at any one time is approximately 17 acres. ~
(e) An approximate timetable to describe the mining operation. The timetable is for
the purpose of establishing the relationship between mining and reclamation
during the different phases of a mining operation.
The Operator anticipates extracting approximately 800,000 tons of aggregate per year,
however, production rate may vary based on market demands. Mining on the
Parker/Dersham site will begin upon receipt of all necessary permits for the site.
Timetable for Mininq and Reclamation
• Phase 1 &2: Mining will begin in Phase 1 and continue directly into Phase 2.
Reclamation for Phase 1 and 2 will begin immediately after mining is complete
and will be completed in less than 5 years pursuant to the operator's
agreement with the landowner. When possible, concurrent reclamation
practices will be used to minimize site disturbance. As excavation progresses
in each phase, the operator will place backfill into the previously mined area.
Concurrent reclamation will provide the most efficient use of material
placement by limiting material handling to the greatest extent possible.
• Phase 3: Mining will likely begin in Phase 3 within 4 years of the end of
mining Phases 1 and 2, depending on market conditions. Phase 3 will be
mined in approximately 3 years and reclaimed in 2 years.
Hall-Irwin Corporation-Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit D-3
Please refer to the Mining Plan Map in Exhibit C for phase areas to be mined,
locations and areas.
(f) Use Mining Plan Map in conjunction with narrative to present:
(i.) Nature, depth and thickness of the deposit and thickness and type of
overburden to be removed
The operator has drilled soils test borings around the mining area, and has operated
the adjacent Baseline Resource site for several years. The locations of the soils
borings are shown on the attached Mining Plan Map in Exhibit C. Please refer to the
soils information included in Exhibit I of this application.
Topsoil & Overburden: Based on soils boring information, the topsoil is
approximately 6 inches in depth and will be stockpiled separately from overburden and
other spoil. The overburden is estimated to range in depth and will also be stockpiled
separately. Please refer to Exhibit I for borings information by Tetra Tech RMC that
describes the topsoil and overburden type.
Sand and Gravel: Based on soils boring information,the sand and gravel resource is
an alluvial deposit that ranges in thickness from approximately 20 to 40 feet, averaging
approximately 30 feet. Refer to the attached boring information in Exhibit I for further
details.
(if.) Nature of the stratum immediately beneath the material to be mined in
sedimentary deposits
The stratum immediately beneath the sand and gravel deposit is claystone with
lenses of siltsone and sandstone bedrock of the Denver and Arapahoe Formations.
(g) Identify the primary and secondary commodities to be mined/extracted and
describe the intended use.
The primary commodities are sand, gravel and fill; intended for construction materials.
(h) Name and describe the intended use of all expected incidental products to be
mined/extracted by the proposed operation.
There are no expected incidental products to be mined.
(1) Specify if explosives will be used in conjunction with the mining(or reclamation)
No explosive material will be used on-site.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Resource—MLRB 112 Permit Application
Exhibit D-4
EXHIBIT E - RECLAMATION PLAN
This information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.5 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(a) A description of the type(s)of reclamation the Operator proposes to achieve in
the reclamation of the affected land, why each was chosen, the amount of
acreage accorded to each, and a general discussion of methods of reclamation
as related to the mechanics of earthmoving;
Phase 1 &2 (Parker property): This area will be backfilled to create upland pasture.
Please refer to the Reclamation Plan Map for the proposed seed mix and additional
details on the proposed vegetation. The estimated area of Phase 1 reclamation to
upland is 7.3 acres and Phase 2 is 11.1 acres. Final grading of Parker property will be
consistent with pre-mining conditions, and the area surrounding the existing residence.
Phase 3(Former Dersham property): This area will be reclaimed to a lined water
storage reservoir due to a need within the State for water storage facilities.
(b) A comparison of the proposed post-mining land use to other land uses in the
vicinity and to adopted state and local land use plans and programs.
The proposed post-mining land uses (pasture and a water storage reservoir) are
compatible with the other land uses in the vicinity, which includes farmland, industrial
land, rural residential and numerous other gravel operations and proposed water
storage facilities.
(c) A description of how the Reclamation Plan will be implemented to meet each
applicable requirement of Section 3.1.
The Operator will carry reclamation to completion with reasonable diligence. Each
phase of reclamation will be completed within one to two years from completion of
mining, but not more than five years from the date the Operator informs the Board or
Office that such phase has commenced.
Section 3.1.5 Reclamation Measures Material Handling: Grading will create a final
topography;using a maximum 3:1 side slope, appropriate for the water storage
reservoir. Grading of the upland area will be consistent with the existing pre-mining
grades in this area which is appropriate for this use. When backfilling the upland and
water storage areas, the operator will use overburden and non-saleable soils
compacted for stability.
Grading will be performed to help control erosion and siltation of the affected lands
through phased mining, implementing good operation techniques to handle material as
little as possible, and vegetation of stockpiles remaining in place for more than one
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E-1
growing season. Although the use of erosion protection devices is not anticipated, if
deemed necessary by the operator at the time of excavation, silt fence and haybale
dams will be installed to prevent erosion. Backfilling and grading will be completed as
soon as feasible after the mining process is complete for each phase.
Maximum slopes and slope combinations will be compatible with the configuration of
surrounding conditions and selected land use. Mining will be done at a slope that is
stable but maximizes gravel extraction in the permit area. Reclaimed slopes in the
water storage reservoir will not be steeper than a 3:1 ratio. The upland area will be
reclaimed to grades consistent with pre-mining elevations.
The operator will backfill using fill material generated on-site, or imported inert fill
generated outside the permit area. If any inert off-site materials are used as backfill, a
notarized letter will be submitted to the Division as required by Section 3.1.5(9) of the
MLRB Construction Material Rules and Regulations. The applicant will supply such a
letter to the Division if, at the time of Reclamation, the applicant intends to use off-site
material as backfill.
It is not anticipated that mining will uncover any refuse or acid-forming or toxic
producing materials, however if any such materials are encountered the operator will
take precaution to handle the materials in a manner that will control unsightliness and
protect the drainage system.
Drill or auger holes that are part of the mining operation shall be plugged with non-
combustible material, which shall prevent harmful or polluting drainage. Any test pits,
soils boring holes, or monitoring wells not located within the mine excavation limits will
be plugged as soon as it can be confirmed that they are no longer needed for the
operation.
Mined material to be disposed of within the affected area will be handled in such a
manner so as to prevent any unauthorized release of pollutants to the surface
drainage system. No unauthorized release of pollutants to groundwater shall occur
from any materials mined, handled or disposed of within the permit area.
Section 3.1.6 Water-General Requirements: The Operator will comply with
applicable Colorado water laws governing injury to existing water rights and with
applicable state and federal water quality and dredge and fill laws and regulations.
The applicant has installed monitoring wells on the adjacent site to establish baseline
conditions prior to mining and to enable groundwater monitoring during mining. The
operator will develop and comply with a stormwater management plan and will use
best management practices (BMPs) to ensure groundwater and surface water are
protected to the greatest possible extent. BMPs include schedules of activities,
prohibitions of practices, maintenance procedures and other management practices to
prevent or reduce the pollution in runoff from the site.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E-2
Section 3.1.7 Groundwater-Specific Requirements: The Operator will comply with
all standards and conditions applicable to classified and unclassified groundwater.
The Operator will protect the existing and "reasonably potential"future uses of
groundwater.
Section 3.1.8 Wildlife: The mining and reclamation plans have been designed to
account for the safety and protection of wildlife on the mine site. The Operator will
mine the site in phases and use concurrent reclamation methods to minimize the
impact on wildlife. The Operator will also convey materials as much as possible to
minimize the use of haul trucks on the site. As described in Exhibit H of this
application, the Savage and Savage site assessment, the proposed reclamation plan
will likely improve wildlife habitat. Currently the parcels are dominated by ruderal
herbaceous weedy species and there is no significant vegetation or topographic
stratification that contributes to wildlife habitat. The proposed seed mix and plantings
are designed to provide additional food,cover and nesting areas for wildlife. The
water area within the reservoir will serve as habitat for waterfowl and other bird
species and the fringes of the reservoir will be used by mammal, bird, reptile and
amphibian species. Control and/or removal of noxious and weedy species during the
project and the replacement of desirable graminoid,forb, shrub and tree species
during reclamation will result in enhancement of wildlife habitat on the project site.
Section 3.1.9 Topsoiling: Topsoil shall be removed and segregated from other spoil.
Topsoil stockpiles shall be stored in places and configurations to minimize erosion and
located in areas where disturbance by ongoing mining operations will be minimized.
Once stockpiled, topsoil shall be re-handled as little as possible. Stockpiles that will
remain in-place for more than one growing season will receive vegetative cover, as
outlined on the Reclamation Plan Map, as soon as possible to minimize erosion.
Section 3.1.10 Revegetation: In those areas where revegetation is part of the
reclamation plan, the land shall be revegetated in a manner that establishes a diverse,
effective, and long-lasting vegetative cover that is capable of self-regeneration without
continued dependence on irrigation or fertilizer and is at least equal in extent of cover
to the natural vegetation of the surrounding area. The proposed seed-mix and
plantings for reclamation are outlined on the Reclamation Plan included in Exhibit F of
this application.
Section 31.11 Buildings and Structures: Please refer to the enclosed Reclamation
Plan included in Exhibit F.
Section 3.1.12 Signs and Markers: The Operator will post appropriate signage at the
entrance to the mine site. The permit area will be marked by existing fencing, or
proximity to existing County roads.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E-3
A. Plans for topsoil segregation,preservation and replacement;for
stabilization, compaction and grading of spoil;and for revegetation.
Topsoil shall be removed and segregated from other spoil. Please refer to the
Mining Plan Map in Exhibit C for general locations of stockpiles. For
reclamation, topsoil will be replaced by a scraper and generally graded with a
blade. Grading shall be done in a manner that controls erosion and siltation of
the affected land to protect areas outside the affected land from slides and
other damage. In addition, backfilling and grading shall be completed as soon
as feasible after the mining process.
Final grading will create a final topography that is appropriate for the final land
use. For example, final grading of the reservoir will replace material at a
maximum 3:1 slope to meet the grade at the top of the banks. Topsoil will be
uniformly placed and spread on areas disturbed by the mining, above the
anticipated high water line. The minimum thickness shall be 6 inches above
the surrounding finished grade, consistent with existing topsoil depths on-site.
The topsoil shall be keyed to the underlying and surrounding material by the
use of harrows, rollers or other equipment suitable for the purpose.
In those areas where revegetation is part of the reclamation plan, the Operator
will revegetate the land in such a manner so as to establish a diverse,
effective, and long-lasting vegetative cover that is capable of self-regeneration
without continued dependence on irrigation or fertilizer and is at least equal in
extent of cover to the natural vegetation of the surrounding area. Seed will be
drilled and mulched.
The revegetation seeding and plant list on the Reclamation Plan Map contains
the preferred species of grasses, shrubs and trees to be planted.
Seeding will take place once final grading and replacement of topsoil have
been completed for each phase. Timing of seeding will be consistent with
standard horticultural practice for dryland applications-generally between late
September and the middle of April to ensure there is adequate moisture for
germination.
During the reclamation of Phase 1 and 2 (Parker Property), existing perimeter
fences will be restored to present pre-mining condition. The fence will be
consistent with existing construction: 32" high, 3 strand 12 Y2 gage—4"
spacing barbed wire, with a maximum of 10' between posts.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E .4
1) A plan or schedule indicating how and when reclamation will be
implemented. Include:
a. An estimate of the periods of time which will be required for the
various stages or phases of reclamation.
Please refer to the Timetable for Mining and Reclamation in Section
(e) of Exhibit D.
Reclamation of each Phase will be completed approximately 1 'h - 2
years after mining of a specific phase is complete, but no longer than
5 years from the beginning of mining in a Phase. Therefore the final
reclamation of the site is anticipated to be completed within 2 years of
the completion of mining Phase 3. Please note that the schedule is
an estimate based on current market conditions. The timing may vary
depending upon the demand for construction material, which may
impact the life of the mining operation.
b. A description of the size and location of each area to be
reclaimed during each phase.
Once each phase has been mined reclamation will proceed.
c. Outlining the sequence in which each stage or phase of
reclamation will be carried out.
Please refer to the Timetable for Mining and Reclamation in Section
(e) of Exhibit D.
2) A description of:
a. Final grading—maximum anticipated slope gradient or expected
ranges thereof;
Phase 1 and 2 on the Parker property will be backfilled to near
existing grade, topsoiled, seeded and mulched. The final grade will
be sloped at 0.5—2 percent consistent with pre-mining conditions.
The finished slopes of the reservoir will be 3 horizontal to 1 vertical.
b. Seeding—types, mixtures, quantities and time of application;
Please refer to the Reclamation Plan Map for the list of plant materials
and seeds to be utilized. The operator will seed during the
appropriate season to ensure adequate moisture for germination and
implement weed controls to allow the grasses to successfully
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E-5
establish. Additional plantings may be installed once the reservoirs
are full of water and the grasses are established.
c. Fertilization —types, mixtures, quantities, and time of application;
The type and application rate of fertilizer shall be determined based
on a soil test at the time of final reclamation.
d. Revegetation—types of trees, shrubs, etc.;and
Please refer to the Reclamation and Landscape Plan Maps for the
types, quantities and location of trees and shrubs to be planted.
e. Topsoiling—specify anticipated minimum depth or range of
depths for those areas where topsoil will be replaced.
Topsoil will be uniformly placed and spread on all areas disturbed by
the mining above the anticipated high water line. The minimum
thickness shall be 6 inches above the surrounding finished grade.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit E-6
EXHIBIT F- RECLAMATION PLAN MAP
Please refer to the attached Reclamation Plan Map.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit F •1
EXHIBIT G - WATER INFORMATION
This information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.7 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(a) Locate on the map(Exhibit C) tributary water courses, wells, springs, stock water
ponds, reservoirs and ditches
The Brighton Ditch is located approximately 1,100 feet to the west of the project site and the
South Platte River is approximately 3,000 feet to the east. Please refer to Exhibit C for
locations of water courses in close proximity to the site, wells, springs, stock water ponds,
reservoirs and ditches. Also attached is a well inventory of surrounding wells plotted from
the Colorado State Engineer's Office data base (2000). We have requested updated
information from the State Engineer's Office.
(b) Identify all known aquifers
The site overlays the tributary alluvial aquifer of the South Platte River. In addition,the site is
underlain by the Lower Arapahoe Aquifer and the Laramie-Fox Hills Aquifer(George
VanSlyke, et. al. 1988, Geologic Structure, Sandstone/Siltstone Isolith. Both the Lower
Arapahoe and Laramie-Fox Hills Aquifers are part of the not-non-tributary and non-tributary
ground water of the Denver Basin, Colorado. Denver Basin Atlas No. 3, DBA-3. Colorado
Division of Water Resources, Office of the State Engineer.)
(c) Show how water from dewatering operations or runoff from disturbed areas,piled
material and operating surfaces will be managed to protect against pollution of either
surface or groundwater both during and after the operation.
Please refer to the Mining Plan Map in Exhibit C of this application. Mine areas will drain
internally. Uncontrolled releases of surface water in disturbed areas will not occur.
Stormwater collected in the active mine area will be managed through the dewatering
system. For this permit area, dewatering water collected will be discharged to the existing
adjacent Baseline Resource dewatering and discharge system.
(d) Estimate project water requirements including flow rates and annual volumes for the
development, mining and reclamation phases of the project.
The following information was provided by Forrest Leaf, P.E. of Leaf Engineering, Inc.:
Projected Use And Consumption: Annual evaporative depletions will be the evaporation
from up to 4,356 feet of 4-foot wide de-watering trench, located outside of the slurry wall, will
take place. The total area of exposed water in the dewatering trenches is 1.50 acres. The
gross annual pan evaporation at the Baseline Resource aggregate mine is 65 inches
according to NOAA Technical Report NWS 33, Evaporation Atlas for the Contiguous 48
United States (Plate 1). Gross shallow lake evaporation is 70%of the gross annual pan
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit G-1
evaporation, or 45.5 inches. Monthly evaporative losses are determined using percentages
specified by the State Engineer's Office for locations below 6,300 feet. The nearest weather
station is in Brighton where the average annual precipitation is 14.55. Effective precipitation,
that part of historical precipitation which was consumed by native vegetation on land to be
covered by water surface, is conservatively estimated to be 70 percent of the total
precipitation. The annual average effective precipitation at the property is estimated to be
10.19 inches. When subtracting the effective precipitation from the gross evaporation yields,
the net annual evaporation is 35.32 inches, or 2.94 acre-feet per acre. The annual amount
of evaporation from open water surfaces is 4.41 acre-feet.
Mining Production & Operations: Hall-Irwin expects to extract a maximum of 800,000 tons
annually of aggregate material from the site. The water retained in the 800,000 tons will be
replaced pursuant to the Substitute Water Supply Plan (SWSP). The total annual amount of
water retained in the gravel product from mining activities totals 23.54 acre-feet.
In addition, an estimated 3.31 acre-feet of water per year will be used for dust control based
(approximately) on 6,000 gallons per day for 20 days per month for 9 months.
Annually the total evaporative and operational losses from mining activities (open water
surface evaporation,water retained in the aggregate product, dust suppression) totals 31.26
acre-feet of depletion which must be augmented. All depletions were lagged to the South
Platte River using the lagging factors approved by the State Engineer pursuant to on-going
Substitute Water Supply (SWSP) approvals.
(e) Indicate the projected amounts of the water sources to supply project water
requirements
The following information was provided by Forrest Leaf, P.E. of Leaf Engineering, Inc.:
Replacement Water: During the extraction of aggregate resources from this site,
replacement water will provide via an ongoing SWSP for the adjacent Baseline Resource site
(M-97-058). The source of replacement water for depletions will be reusable municipal
effluent leased from the Consolidated Mutual Water Company(CMWC) and Laramie--Fox
Hills non-tributary well. The State Engineer must approve a SWSP every two years. These
approvals require that the applicant provide a detailed explanation of the mining operations,
a quantification of all mining activities and subsequent depletions and all legally available
replacement sources.
(f) Affirmatively state that the Applicant has acquired or applied for a National Pollutant
Discharge Elimination System permit from the Water Quality Control Division
The Operator will apply for a National Pollutant Discharge Elimination System (NPDES)
permit from the Water Quality Control Division of the Colorado Department of Public Health
and Environment prior to discharging water from the site.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit G-2
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EXHIBIT H -WILDLIFE INFORMATION
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.8 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(1) The Operator/Applicant shall include in this Exhibit, a description of the game and
non-game resources on and in the vicinity of the application area, including;
a) A description of the significant wildlife resources on the affected land;
This information is provided in the attached Wildlife Assessment Report, prepared by
Savage and Savage environmental firm, located at 4610 Haystack Drive, Windsor,
Colorado 80550, based on a site investigation conducted on May 26, 2005.
b) Seasonal use of the area;
This information is provided in the attached Wildlife Assessment Report, prepared by
Savage and Savage environmental firm, located at 4610 Haystack Drive,Windsor,
Colorado 80550, based on a site investigation conducted on May 26, 2005.
c) Threatened or endangered species;
The attached Savage and Savage Wildlife Assessment included an evaluation for
threatened and endangered species. Their conclusions are documented in the
attached report. We have received concurrence from the US Fish and Wildlife
Service, please refer to letters attached.
d) General effect during and after the proposed operation on the existing wildlife of
the area;
This information is provided in the attached Wildlife Assessment Report, prepared by
Savage and Savage environmental firm, located at 4610 Haystack Drive,Windsor,
Colorado 80550, based on a site investigation conducted on May 26, 2005.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit H- 1
Parker/Dersham Project Wildlife Assessment
Executive Summary
The proposed mineral extraction plan for the Hall-Irwin Parker/Dersham site identifies
mining two parcels east of Weld County Road .23.5 and west of the existing Hall-Irwin
mineral extraction operations. The Parker and Dersham parcels are isolated from the
South Platte River and riparian corridor by the active mining operations. The parcels do
not contain any waters of the United States or wetlands. Currently, the parcels are
dominated by ruderal herbaceous weedy species. There is no significant vegetation or
topographic stratification that contributes to wildlife habitat. The Parker parcel will be
reclaimed to an upland configuration similar to that existing currently. The Dersham
parcel will be slurry walled and developed as water storage. A dryland seed mix will be
seeded within the upland areas of the reclaimed site. The water area within the reservoir
will serve as wildlife habitat for waterfowl and other bird species and the fringes'of the
reservoir will be used by mammal, bird, reptile, and amphibian species. Control and/or
removal of noxious and weedy species during the project. and the replacement of
desirable graminoid, forb, shrub, and tree species during reclamation, will result in
enhancement of wildlife habitat on the project site.
Introduction
Savage and Savage conducted a wildlife assessment for the Hall-Irwin Parker/Dersham project site on May 26, 2005. Weather during the site investigation was warm, dry, and
clear with temperatures in the mid 80's(°F).
Site Description
The Parker/Dersham project site consists of two parcels comprising approximately 53
acres contained within Section 36, Township 1 North, Range 67 West of the 6th Prime
Meridian, Weld County, Colorado. The properties are bounded on the north, south, and
west by fence lines, and on the east by Hall-Irwin's Baseline Resources site. Currently,
the proposed Parker/Dersham Resource site has ongoing land uses including an auto
mechanic shop and oil and gas wellheads. (Parker/Dersham Site General Location Map)
Topography and Geomorphic Features
The Parker and Dersham parcels are situated on the primary alluvial terrace of the South
Platte River, located 0.75 miles east of the project site. The parcels are generally flat and
slope gently to the east. There are no surface drainages or significant remnant drainage
features on the parcels. Other topographic features include areas that have been filled for
structures, leveled for pastures or excavated for farm uses. The mining operation has
placed material stockpiles along the boundaries of the parcels.
Vegetation
There are no native vegetation communities extant on the parcels. Both parcels contain
vegetation that can be categorized as mesic-xeric introduced ruderal herbaceous seral.
The visually dominant species include whitetop (Cardaria draba) a state listed noxious
weed, Canada thistle (Cirsium arvense) also a state listed noxious weed, annual mustards
(Descurainia species), and curly dock(Rumex crispus), a native early seral stage invader
forb.
Significant Wildlife Resources
Tables 1, 2, and 3 list wildlife species that potentially occur on-site according to the
Colorado Distribution Latilong Studies (CISOW, 1981, 1990, 1998). The latilong studies
address vertebrates in the categories of mammals, birds, reptiles, and amphibians.
During the site investigation few wildlife species were encountered. Several groups (50-
100 individuals) of black-tailed prairie dogs (Cynomys ludovicianus) are present on the
Parker parcel. There was no evidence of native predators in the immediate area.
Several bird species were observed on the site. Magpies (Pica hudsonia), house sparrows
(Passer domesticus), and European starlings (Sturnus vulgaris) were spotted within the
parcels.
Seasonal Use of Potentially Occurring Wildlife Species
With the exception of bats.(identified from the list of potentially occurring species), the
mammals species encountered during the site inspection or that potentially occur on-sitp
are expected to be year-round residents or users of the site. The carnivore and ungulate
species are not restricted to this site and tend to have relatively large home ranges (up to
several square miles). The majority of rodent and insectivore species can be expected to
reside on-site throughout the year, though many may hibernate during the cold months.
Avian species may be year-round, temporary migrants, or summer residents of the site.
Year-round residents would include waterfowl, raptors, gallinaceous birds, doves, owls,
and woodpeckers. The majority of the shorebirds and passerines would use the site
during the spring, summer, and fall for breeding, feeding or resting during migration.
Amphibian and reptile.sped'ies of the site lie year-round residents.
Species of Special Concern
The U.S. Fish and Wildlife Seiyice lists twenty animal and thirteen plant species as
threatened or endangered in the State of Colorado. Of those listed species, the U.S. Fish
and Wildlife Service has expressed an interest in three that may potentially be present in
the project site or.adjacent areas, the bald eagle (Haliaeetus leucooephalus), the Preble'"s
meadow jumping mouse (Zapus hudsonius preblet), and the Ute ladies'-tresses orchid
(Spiranthes diluvialis).
Bald eagles are predominantly winter residents along the South Platte River corridor, and
winter roost trees are located to the south and north of the project site (one to three miles
distant). An active bald eagle nest (2005) is located approximately 0.5 miles north of the
Parker parcel. The U.S. Fish and Wildlife Service and the Colorado Division of Wildlife
require a 0.25 mile radius buffer zone around winter roost trees and nests. Both the
Parker and Dersham parcels are well outside these buffer areas and mining activities are
not likely to adversely affect the bald eagles.
A disqualification request was prepared for the Preble's meadow jumping mouse and
submitted to the U.S. Fish and Wildlife Service June 10, 2005. Based on negative
trapping surveys in the vicinity, it was concluded that the likelihood of encountering the
mouse is small.
The property does not contain potential habitat for the Ute ladies'-tresses orchid. A
disqualification request was prepared for the orchid and submitted to the U.S. Fish and
Wildlife Service June 10, 2005.
Project Effects to Wildlife
Noise and air emissions during mining will cause a temporary disturbance to wildlife
during active operations. Some wildlife species will be temporarily displaced with
mining operations within the pit area. Species such as raccoons, coyotes, beaver, deer,
and raptors will continue to use the property and adjacent areas during mining operations
and the site itself when operations are not active. Bird species will use the periphery of
the site and the site itself opportunistically, if prey or food species are present.
The proposed project will extract material and leave one reservoir and areas of uplands
within the project site. The existing riparian corridor along the.South Platte River will not
be disturbed. Permanent reclamation of the site will entail grading, respreading topsoil,
and seeding and planting perennial native species that will support wildlife species. The
mining and reclamation will create a more diverse habitat than is currently present.
Areas of open water will sustain species of reptiles and amphibians as well as shorebirds -
and waterfowl. With the planting of additional native trees and shrubs, additional strata
and vegetation layers will be added to the site, "creating improved cover, foraging,
roosting, and nesting areas for wildlife. With control and/or removal of noxious species
during the project, and the replacement of desirable graminoid,,.forb, shrub, and tree
species, mining and reclamation will result in enhancement of wildlife habitat on site.
Literature Cited
Colorado Division of Wildlife. 1981 Ed. Colorado Reptile and Amphibian Distribution
Latilong Study.
Colorado Division of Wildlife and The Denver Museum of Natural History. 1990 Ed.
Colorado Mammal Distribution Latilong Study.
Colorado Division of Wildlife in cooperation with the Colorado Field Ornithologists.
1998 Ed. Colorado Bird Distribution Latilong Study.
as
•
Table 1.
Mammal Species Potentially •
Inhabiting the Parker and Dersham Parcels
Classification/Common Name Scientific Name Preferred Habitat
Marsupials
Virginia Opossum Didelphis virginiana Ag
Carnivores
Coyote Canis latrans All types
Red Fox Vulpes vulpes U '`
Raccoon Procyon lotor Ag
Long-tailed Weasel Mustela nigripes All types
Striped Skunk Mephitis mephitis All types
Ungulates
Mule Deer Odocoileus hemionus Ag,U
White-tailed Deer Odocoilens virginianus Cr,Ag
Lagomorphs
Eastern Cottontail Sylvilagus floridanus Ag
Black-tailed Jack Rabbit Lepus californicus MDT
White-tailed Jack Rabbit Lepus townsendii MXP
Rodents
Wyoming Ground Squirrel Spermophilus elegans MXP
Thirteen-lined Ground Squirrel Spermophilus tridecemlineatus MXP,U
Black-tailed Prairie Dog Cynomys ludovicianus MXP,U
Fox Squirrel Sciurus niger U
Plains Pocket Gopher Geomys bursarius MXP
Silky Pocket Mouse Perognathus flavus MXP
Hispid Pocket Mouse Chaetodipus hispidus MXP
Ord's Kangaroo Rat Dipodomys ordii MXP
Western Harvest Mouse Reithrodontomys megalotis MXP,Ag
Deer Mouse Peromyscus maniculatus All types
Northern Grasshopper Mouse Onychomys leucogaster MXP
Prairie Vole Microtus ochrogaster MXP
Norway Rat Rattus norvegicus U
House Mouse Mus musculus - Cr,U
Insectivores
Least Shrew Cryptotis parva MXP
Bats
Western Small-footed Myotis Myotis ciliolabrum MXP
Big Brown Bat Eptesicusfuscus U
Habitat Types
MXP Mixed grasses of habitat alteration Cr Annual croplands
Ag Agricultural areas U Urban
Table 2.
Breeding Bird Species Potentially
Inhabiting the Parker and Dersham Parcels
Classification/Common Name Scientific Name Preferred Habitat
Waterfowl
Canada Goose Branca canadensis hpCP
Mallard Anas platyrhynchos Cr
Vultures and Raptors -
Bald Eagle Haliaeetus leucocephalus MXP
Northern Harrier Circus cyaneus Mxp Cr.
Sharp-shinned-Hawk Accipiterstriotus U
Cooper's Hawk Accipiter cooperii U
Swainson's Hawk Buteo swainsoni MXP,Ag
Red-tailed Hawk Buteo jamaicensis Ag
Golden Eagle Aquila chrysaetos MXP,Ag
American Kestrel Falco sparverius Ag
Prairie Falcon Falco mexicanus MXP
Gallinaceous Birds.
Ring-necked Pheasant Phasianus colchinus. Ag,Cr
Wild Turkey Meleagris gallopavo Ag
Northern Bobwhite Colinus virginianus Ag
Shorebirds
. Killdeer Charadrius vociferous all habitat types
Common Snipe Gallinago gallinago MJCP
Wilson's Phalarope Phalaropus tricolor Cr
Pigeons and Doves
Rock Dove Columba livia Ag U
Mourning Dove Zenaida macroura MXP,U
Owls
Common Barn-Owl- Tyto alba Ag
Eastern Screech-Owl Otus asio Ag,U
- Great Homed Owl Bubo virginianus Ag
Burrowing Owl Athena cunicularia MXP
Short-eared Owl Asio jlammeus -_MXP Ag
Nighthawks and Goatsuckers
Common Nighthawk Chordeiles minor MXP,U
- Swifts
Chimney Swift .. Chaetura pelagica U
Woodpeckers
Red-headed Woodpecker Melanerpes erythrocephalus U
Downy Woodpecker Pico ides pubescens U
Northern Flicker Colaptes auratus U
4
Table 2. continued
Breeding Bird Species Potentially
Inhabiting the Parker and Dersham Parcels
Classification/Common Name Scientific Name Preferred Habitat
Passerines
Say's Phoebe Sayornis saya MXP,U
Cassin's Kingbird Tyrannus vociferans Ag
Western Kingbird Tyrannus verticalis Ag,U
Eastern Kingbird Tyrannus tyrannus Ag, U
Homed Lark Eremophila alpestrts MXP,U
Northern Rough-winged Swallow Stelgidopteryx serripennis Ag
Bank Swallow Riparia rip aria Ag
Cliff Swallow Hirundo pyrrhonota Ag
Barn Swallow Hirundo rustics Ag
Blue Jay Cyanocitta cristate Ag,U
Black-billed Magpie Pica pica Ag,U
American Crow Corvus brachyrynchos Ag,U
Black-capped Chickadee Parus altricapillus Ag;U
Western Bluebird Sialia mexicana U
American Robin Turdus migratorius Ag,U
Northern Mockingbird Mimus polyglottos Ag
Brown Thrasher Toxostoma rufum Ag
European Starling Sturnus vulgaris All habitat types
Red-eyed Vireo Vireo olivaceus U
Yellow Warbler Dendroica petechia Ag,U
Vesper Sparrow Pooecetes gramineus MXP
i Lark Sparrow Chondestes grammacus
MXP
Lark Bunting Calamospiza melanocorys MXP
Savannah Sparrow Passerculus sandwichensis MXP
Grasshopper Sparrow Ammodramus savannarum MXP
Song Sparrow Melospiza melodia U
Bobolink . Dolichonyx oryzivorus MXP
Red-Winged Blackbird Agelaius phoeniceus MXP
Western Meadowlark Sturnella negleeta MXP
Brewer's Blackbird - Eup'hagus cyanocephalus U
Common Grackle Quiscalus quiscula Ag,U
Brown-headed Cowbird Molothrus ater Ag,U
Orchard Oriole Icterus spurius Ag
Northern Oriole Icterus galbula Ag,U
House Finch Carpodacus mexicanus U
House Sparrow Passer domesticus . U
Habitat Types
MXP Mixed grasses of habitat alteration
Ag Agricultural areas
Cr Croplands
U Urban
I
Table 3.
Reptile and Amphibian Species Potentially
Inhabiting theParker and Dersham Parcels
Classification/Common Name Scientific Name Preferred Habitat
AMPHIBIANS
Toads and Frogs
Great Plains Toad Bufo cognatus MXP,Ag,U
Woodhouse's Toad Bufo woodhousei woodhousei MXP,Ag,U
Boreal Chorus Frog Pseudacris triseriata maculata
Ag
REPTILES
Lizards
Northern Earless Lizard Holbrookia maculata maculata MXP
Skinks
Northern Many-lined Skink Eumeces multivirgatus rnulth'irgatus Ag,U
Snakes
Eastern Yellowbelly Racer Coluber constrictor flaviventris MXP,Ag,U
Plains Hognose Snake Heterodox nasicus nasicus Ag
Milk Snake Lampropeltis triangulum Ag
Bullsnake Pituophis melanoleucus sayi MXP,Ag,U
Western Plains Garter Snake Thamnophis radix haydeni U
Habitat Types
MXP Mixed grasses of habitat alteration
Ag Agricultural areas
U Urban
¢RT x
1.
c; United States Department of the Interior
FISH AND WILDLIFE SERVICE
y�rsc s*° Ecological Services
764 Horizon Drive,Building B
Grand Junction,Colorado 81506-3946
M REPLY REFER TO:
ESICO:FWSIESISpiranthes
MS 65412 GJ
August 4,2005
Edith Savage
Savage and Savage Environmental
4610 Haystack Drive
Windsor, Colorado 80550
Dear Ms.Savage: - - -
Based on the authority conferred to the U.S.Fish and Wildlife Service(Service) by the
Endangered Species Act of 1973(ESA) as amended(16 U.S.C. 1531 et seq.),die Service has
reviewed the habitat assessment report fors iranthes difuviatis(Ute ladies'-tresses orchid)
r(orchid)submitted with your letter of June 10,2005. This report regards the proposed
arker ersham Resource site located in T. 1 N.,R. 67 W.,section 36,in Weld County,
olora o.
Given your compliance with the orchid survey guidelines,the Service finds the report acceptable
and agrees that suitable habitat for the orchid is not present within the project area. Thus, the
Service concurs with the determination that the impacts resulting from the proposed project are
not likely to adversely affect either species.
We appreciate your submitting this report to our office for review and comment. If the Service
can be of further assistance,please contact Ellen Mayo at(97O)243-2778,extension 14,or
ellen_mayo@fws.gov.
Sincerely,
__ fit° p
•
! Allan R.Pfister -
r\ Western Colorado Supervisor
cc: COE, Littleton
EMayo:F W S ESPsrker-DershamResourscSitespinmthesSurveyLtr.doc:080405
Savage and Savage ENVIRONMENTAL is
� ,
practical solutions for environmental issues
, ., --
4610 Haystack Drive 97O6748080 telephonerf 'rfiF i *l
l��,141
Windsor, Colorado 50550 970 6748088 facsimile ' `�, d n' J
savageandsavage@earthllnk.net Ir ,
y4Pfrit• ,
.�{���sy
June 10, 2005
Ellen Mayo
U.S. Fish and Wildlife Service
764 Horizon Blvd., Bldg. B
Grand Junction, Colorado 81506
Re: Concurrence Request for Spiranthes diluvialis Disqualification—
Hall-Irwin's Parker/Dersham Resource site, Weld County, Colorado
Dear Ms. Mayo:
Savage and. Savage conducted a. field investigation at the proposed Parker/Dersham
Resource site on May 26, 2005 in order to assess.the potential for the presence of critical
habitat for the Ute Ladies'-tresses Orchid (Spiranthes diluvialis), a federally listed
threatened species. The Parker/Dersham Resource site consists of two parcels. The
Parker site to the north is approximately 23 acres and the Dersham site to the south is
approximately 30 acres contained within Section 36 in Township 1 North, Range 67 West
fi
of the 6th Prime Meridian, Weld County, Colorado.. The properties are bounded on the
north, south, and west by fence lines, and on the east by Hall-Irwin's Baseline Resources
site. Currently, the proposed Parker/Dersham Resource site has ongoing land uses
including an auto mechanic shop and oil and gas wellheads. Adjacent land uses include
mineral extraction and residential. (General Location Map)
Based on a field investigation conducted by Savage and Savage on May 26, 2005 and
current U.S. Fish and Wildlife Service (USFWS) survey guidelines dated November 23,
1992, we believe this site is exempt from the necessity to conduct an orchid survey and
has very low potential to harbor individuals or a population of Spiranthes diluvialis for
the following reasons.
Ellen Mayo
Parker/Dersham Resource Site— Orchid Disqualification Request
Page 2
According to the USFWS guidelines (1992) the orchid is typically found in seasonally
moist soils and wet meadows near springs, lakes, or perennial streams and their
floodplains. Characteristic orchid habitat is not located within the Parker/Dersham
Resource site. No water features or wetlands were observed on the site. There is no
hydrophytic vegetation located on the proposed site. The Parker/Dersham Resource site
is dominated by ruderal species that include whitetop (Cardana draba), Canada thistle
(Cirsium arvense), and curly dock (Rumex crispus)..
For the above reasons we request a concurrence for disqualification of this site for further
consideration as orchid habitat. If you have any questions, or we can provide additional
supporting information regarding this concurrence request for disqualification for the
Spiranthes diluvidlis on the Parker/Dersham site, please contact us..
Sincerely,
tea,'
Edith Savage
Principal
c: Jeff Gregg, Hall-Irwin Corporation
Karen Flanders, Civil Resources
attachments: General Location Map
Site Photos
1
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0 000 2000 • �l HALL-IRWIN CORPORATION
Na9ffi _ CIVIL'RE59URCEs•LLC PARKER/DERSHAM RESOURCE
_
( IN FEET ) DATE: FIGURE:
05/200S 1 EXHIBIT B: INDEX MAP
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Figure 2. View of Parker Parcel from North Boundary
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Figure 3. View of Dersham Parcel from NW boundary
^` oa&t r1Ff
-`-, United States Department of the Interior
1/4
_ors. FISH AND WILDLIFE SERVICE
Ecological Services
Colorado Field Office
755 Parfet Sheet,Suite 361
Lakewood,Ostend*00215
INSEPIIM REFER.TO:
T&E/PMIMIOthcr
MS 65412 Lkwd
JUN 2 2 205
Edith Savage
Savage&Savage
4610 Haystack Drive
Windsor;Colorado 580550
Dear Aft.Singe.
We are responding to your letter of June 10,2905,re3uesting clearance underthe authority
conferred to the U.S.Fish and Wildlife Service(Satinet)by lbeEndangerod Species Act of 1973
(ESA),as amended(16 U.S.C. 1531 et The Service has reviewed thePrebie's meadow
jumping mouse,Zamahudsonius ptrblei reble's),habitat assessment report ibr all 3 vin's
proposed Parker &Aer sbatn Resource Res(SW14.NNNE%a end SW144 SE%Section 36,TIN,
R67VW)located northwest of Brighton in Weld County,Colorado.
Based on the information provided,and given poi-compliance with the Preble's survey
guidelines, the Service finds the report acceptable and agrees that a population of Preble's is not
likely to be present within the subject area. Titus,the Service concludes that the proposed project
on this site should not have direct adverse affects to Noble's. Should Peebles populations exist
downstream from the site,actions on the site that result hi significant-modifications of:Ptchic's
habitat downstream(for example,through alteration of existing flow regimes,or sedimentation)
may he subject to provisions of the ESA.
• However,the Service is concerned thatdevelopmeat of the ptnposed project.may have
directlindirect adverse affects to populations of the federally listed bald eagle(Hei aeeua
kitcoceplralus)that may use habita7t.&dungthe South Platte 'River or adjacent properties for nest
or roost sites. It is recommended that additional guidance on raptor buffer zones and seasonal
restrictions be reviewed prior to construction:
Bald Eagle Nest Site:
Year round closure to surface occupancy* (Beyond that which historically occurred in the area)
within t4 mile radius of nest. No human encroachment from November 15 through July 31
within!A mile radius of the nest If it is necessary to work within the V2 mile buffer,the intrusion
should be restricted to August 15 through October 15.
"Surface occupancy includes human habitation as well as non-human habitation,caamplea of which world be fit
and gas wells,tanks,roads,tacks,trails,etc.
In addition, if there is a Federal ageiicylmoney associated with this project,and the Federal
agency and the applicant determine thatthere are depletions to the South Platte River associated
with the proposed project,the Federal agency should request initiation of formal ESA section 7
consultation in a letter to my office. A request for initiation of formal section 7 consultation on
water-related.projects associated with depletions to the central Platte River should include a
complete project description including water-related project elements and origin of water
associated with the proposed project; an estimate of the amount and timing(by month)of
i
Parr&Dcrsharn Resource Sites Page 2
average annual water depletion(bath existing and new depletions); and describe methods of
arriving at such estimates.Completion of die consultation will be based on die date of receipt of
the information required to conduct the consultation.
If a formal section 7 consultation is the Service will make every effort to accommodate
the applicant's schedules to prreveitt)rrojtct . If your office or the applicant would like to
discuss the proposed project in relation to Platte ver system letive issues in Colorado,
please.contact Sandy Vana-Miller in my office at(303)275-2370.
Please note tat this clearance is validfor one year from the date of this letter. Should additional
information on listed or proposed species becomes available,this determination may be
reconsidered under the ESA. if the proposed project has not commenced within one year, please
contact the Colorado Field Office to t an extension.
On February 2,2005,Preble's was proposed for drtitli%in the Federal Register(Vol.7014o.21
FR 5404). Until a final determination is made,Preble's remains prometed as a tinamened species
under the ESA.
If we can be of further assistance,please contact Barbaro Spagnuolo of my staff at(303)275-2370.
Sincerely,
Susan C.Liner
Colorado Field Supervisor
cc: FWS/CFO: Sandy Vana-Miller
FWS/CFO:B. Spagnuolo
• Rerereacc:B15\WeldWarker&Dershamwpd
Savage and Savage ENVIRONMENTAL it a.rrilik^ practical solutions for environmental issues`
„ a
4-610 Haystack Drive 970 674 8080 telephone ?
Windsor,Colorado 80550 970 674 8088 facsimile ' ''
savageandsavege@earthlInk.net , ; r , ,'
'
y' 1
c '` ii4ry, ,,t'
'r � -tip.
June 10, 2005
Peter Plage
U.S. Fish and Wildlife Service
755 Parfet, Suite 361
Lakewood, Colorado 80215
Re: Concurrence Request for Zapus hudsonius preblei Disqualification —
Hall-Irwin's Parker/Dersham Resource site, Weld County, Colorado
Dear-Mr. Plage:
Savage and Savage conducted a field investigation at the proposed Parker/Dersham
Resource site on May 26, 2005 in order to assess the potential for the presence of critical
habitat for the Preble's meadow jumping mouse (Zapus hudsonius preblei), a federally
listed threatened,species. The Parker/Dersham Resource site consists of two parcels.
The Parker site to the north is approximately 23 acres and the Dersham site to the south is
approximately 30 acres contained within Section 36 in Township 1 North, Range 67 West
of the 6th Prime Meridian, Weld County, Colorado. The properties are bounded on the
north, south, and west by fence lines, and on the east by Hall-Irwin's Baseline Resources
site. Currently, the proposed Parker/Dersham Resource site has ongoing land uses
including an auto.mechanic shop and oil and gas wellheads. Adjacent land uses include
mineral extraction and residential. (General Location Map)
The most significant natural topographic feature in the vicinity of the Parker/Dersham
site is the South Platte River, which is located approximately 035 miles east of the
proposed site. The proposed project site is located on the primary alluvial terrace of the
South Platte River and slopes gently toward the river (west to east).
Peter Plage
Parker/Dersham Resource Site—Mouse Disqualification Request
Page 2
Based oh a field investigation conducted by Savage and Savage on May 26, 2005 and
current U.S. Fish and Wildlife Service (USFWS) interim survey guidelines dated April
27, 2004, we believe this site is exempt from the necessity to conduct Preble's trapping
and has very low potential to harbor individuals or a population of Zapus hudsonius
preblei for the following reasons.
Characteristic Preble's habitat is not located within the Parker/Dersham Resource site.
The proposed site is dominated by ruderal species that include whitetop (Cardana
draba), Canada thistle (Cirsium arvense), and curly dock (Rumex crispus). No water
features or wetlands were observed on the site.
Hall-Irwin's Baseline Resource, an ongoing mineral extraction site, is located between
the proposed Parker/Dersham Resource site and the South Platte River. The Baseline
Resource site isolates the proposed mineral extraction site from the South Platte River
due to ongoing mineral extraction and overburden and resource material_stockpiles that
are located along the east edge of the proposed site.
Preble's meadow jumping mouse habitat is not found on the proposed site due to a lack.
of wetlands or an accessible waterway, ruderal plant species with no shrub or other
overstory, and ongoing mineral extraction that isolates the proposed site from the South
Platte River. A Preble's meadow jumping mouse survey was conducted immediately
north of the proposed site, and no mice were encountered.
For the above reasons we request a concurrence for disqualification of this site for further
consideration as Preble's habitat and exclude the site from the trapping requirements. If
you have any questions, or we can provide additional supporting information regarding
this concurrence request for disqualification for the Zapus hudsonius preblei on the
Parker/Dersham site,please contact us.
Sincerely,
1/4.54-,44.€C ..
Edith Savage
Principal
c: Jeff Gregg, Hall-Irwin Corporation
Karen Flanders, Civil Resources
attachments: General Location Map
Site Photos
. ✓ 1,11;2O,9
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1
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•
•
•
EXHIBIT I - SOILS INFORMATION
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.9 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
•
(1) In consultation with the Soil Conservation Service or other qualified person, indicate on
a map (in Exhibit C) or by a statement the general type, thickness and distribution of soil
over affected land.
The soil types on the site are shown on the Existing Conditions Map(Exhibit C). Please refer
to the following summary logs of exploratory drillings and descriptions of soil descriptions from
the Soil Survey of Weld County, Co, USDA Soil Conservation Service for further details.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit I- 1
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G� HALLIRWIN CORPORATION
1,011,45z 'libiN¢n1��'gpvy1' ,�.j(' .yr' 444'4�� . • a1, ( CIVIL RLS ES uc PARKER/DERSHAM RESOURCE
` i ( ` ",r xt fa 3 v r � DATE. FIGURE:
n _� t4 •� 1 fi w . y ,,I,•,• ,,,,144.14.44,,_ � t, oe,mos 1 SCS SOILS MAP
S' 1 M a s
�"/n '^ILL da"ai.,.x.v.:.� �.r '.A
_ LD COUNTY, COLORADO, SOUTHERN PART 7
brief description of the soil profile. In each description, The acreage and proportionate extent of each map unit
the principal hazards and limitations are indicated, and are given in table 4, and additional information on proper- ...,
the management concerns and . practices needed are ties, limitations, capabilities, and potentials for many soil
iscussed. uses is given for each kind of soil in other tables in this
The map units on the detailed soil maps represent an survey. (See "Summary of tables.") Many of the terms
area on the landscape made up mostly of the soil or soils used in describing soils are defined in the Glossary.
fore which the unit is named. Most of the delineations
shown on the detailed soil map are phases of soil series. Soil descriptions
Soils -that have a profile that is almost alike make up a ,
soil series. Except for allowable differences in texture of 1—Altvan loam, 0 to 1 percent slopes. This is a deep,
the surface layer or of the underlying substratum, all the well drained soil on terraces at elevations of 4,500 to 4,900
soils of a series have major horizons that are similar in feet. It formed in old alluvium deposited by the major
composition, thickness, and arrangement in the profile. A rivers. Included in mapping are small areas of soils that
soil series commonly is named for a town or geographic show evidence of poor drainage..Also included are small,
feature near.the place where a soil of that series was long and narrow areas of sand and gravel deposits.
- first observed and mapped. Olney and Nunn, for example, Typically the surface layer of the Altvan soil is grayish
are names of two soil.series. _. brown loam about 10 inches thick. The subsoil is brown
Soils of one series can differ,in texture of the surface and light yellowish brown clay loam and sandy clay loam
layer or in the underlying substratum and in slope, ero- about 15 inches thick.The substratum is calcareous loamy sion, stoniness, salinity, wetness, or other characteristics sand about 6 inches thick over gravelly sand.
that affect their use: On the basis of such differences, a Permeability and available water capacity are
soil series is divided into phases..The name of a soil phase moderate. The effective rooting depth is-20 to 40 inches.
commonly indicates a feature that affects use or manage- Surface runoff is slew, and the erosion hazard is low.
. ment.For example, Olney fine sandy loam, 1 to 3 percent .This soil is used almost entirely for irrigated crops. It
slopes, is one of several phases within the Olney series. 'is suited to all crops commonly
Some map units are made up of two or more dominant P Y algrfalfa,
smalln in the in,ar p tatoes,
kinds of-soil. Such map.units are called soil complexes and ing oniocornns.
sugar beets, beans,a alfalfa, cropping gis, potatoes,
undifferentiated groups.: and onions. An example of a suitable system is 3
to. 4 years of alfalfa-followed by corn, corn for silage,
A soil complex consists of areas of two or more soils
that are so intricately mixed or so small in size.that they sugar beets, small grain, or beans. The high clay content
'annot be shown separately on the soil map. Each area'in- and the rapidly permeable substratum' slightly restrict
' lodes some of each of the two or more dominant soils, some,crops.
II--
and the pattern and proportion are somewhat similar in All 'methods
is of irrigation are suitable, but furrow on,
all areas. Midway-Shingle complex, 5-to 20 percent slopes, rogation is the most common (fig. 4). Proper irrigation,
is an example. water management is essential. Barnyard manure and-
An undifferentiated group is made up of two or:more commercial fertilizer are needed for top yields.
soils that could be mapped individually but are mapped as shrubs Windbreaks o and environmental plantings of trees and
one unit because there is little valde in separating them. commonly grown in the area are generally well
The pattern and proportion of the soils are not uniform. suited to this. soil. Cultivation to control -competing
An area shown on the map has at least one of the domi- vegetation should be continued for as many years as
possible following planting. Trees that are best suited and
nant (named) soils or may have all of them. Loup-Bog
loamy sands, 0 to 3 percent slopes, is an undifferentiated have good survival are Rocky Mountain juniper, eastern
redcedar, ponderosa pine, Siberian elm, Russian-olive, and
group in this survey area.
Most map units include small, scattered areas of soils hackberry. The shrubs.best suited are skunkbush sumac,
other than those that appear id the name of the map unit. lilac, Siberian peashrub,and American plum.
Some of these soils have properties that differ substan- This soil can produce habitat elements that are highly
tially froth those of the dominant soil or soils and thus suitable for openland wildlife, including pheasant, cotton-
could significantly affect use and management.of the map tail, and mourning dove. Such crops as wheat, corn, and
unit: These soils are described in- the description of each alfalfa provide suitable habitat for openland wildlife,
map unit. Some of the more unusual or strongly contrast- - especially pheasant. Tree and shrub plantings and
ing soils that are included are identified by:a special sym- undisturbed nesting cover would enhance openland wil-
bolon the soil map. ' dlife populations.
Most mapped'areas include places that have little or no This Altvan soil has fair to good potential.for urban
soil material and -support-little or no vegetation. Such and recreational development. The chief limiting soil fea-
places are called miscellaneous areas; they are delineated tures for urban development are the shrink-swell poten-
on the soil map and given`descriptive names..Rock out- tial of the subsoil as it wets and dries and the rapid
crop is an example. Some of these areas are too small to permeability of the sand and gravel substratum. Septic
he delineated and are identified by a special symbol on tank absorption fields function properly, but in places the
I e soil map. substratum does not contain enough fines to properly
8 SOIL SURVEY
filter the leachate. Sewage lagoons require sealing. 60 percent of the unit. Aquents, which have a lighter
Lawns, shrubs, and trees grow well. Capability subclass colored surface layer, make up about 35 percent. About 5
Its irrigated. percent is Aquepts and Bankard sandy loam.
2—Altvan loam, 1 to 3 percent slopes. This is a deep, These are deep, poorly drained soils that formed in
well drained soil on terraces at elevations of 4,500 to 4,900 recent alluvium. No one pedon is typical. Commonly the
feet. It formed in old alluvium deposited by the major soils have a mottled, mildly alkaline to moderately al-
rivers. Included in mapping are small areas of soils that kaline loamy or clayey surface layer and underlying
show evidence of poor drainage. Also included are small, material and are underlain by sand or. sand and gravel
Tong and narrow areas of sand and gravel deposits. within 48 inches. In places they have a gleyed layer in the
Typically the surface layer of this Altvan soil is grayish underlying material.
brown loam about 10 inches thick. The subsoil is brown Most of the acreage is subject to flooding. •The water
and light yellowish brown clay loam..and sandy clay loam table is at or near the surface early in spring and recedes
about 14 inches thick. The substratum is calcareous loamy to as deep as 48 inches late in fall in some years.
sand about 5 inches thick over gravelly sand. These soils are used for rangelandand wildlife habitat.
Permeability and available water capacity are Some small areas'have been reclaimed by major drainage
moderate. The effective rooting depth is 20 to 40 inches. and leveling and are used for irrigated crops.
Surface runoff is medium, and the erosion hazard is low. The potential native vegetation.is 'dominated by alkali
This is suited toit is all used almost
mirely for irrigated crops. It sacaton, switchgrass, and'western wheatgrass. Saltgrass,
crops commonly grown in the area, incluth sedge, rush, and alkali bluegrass are also ing corn, sugar beets, beans, alfalfa, small grain, potatoes, prominent.
and onions. An example of a suitable cropping system is 3 Potential production ranges00po'from"3,000 pounds per acre in
to 4 years of alfalfa followed by corn, corn for silage, favorable years to 2,000 pounds in unfavorable years. As
sugar beets, small grain, or beans. Land leveling, ditch range condition deteriorates, the ease grass, alkali
lining, and installing pipelines may be needed for proper sedge, , and western wheatgrass d"ecrease and saltgrass,
water application sedge, and rush increase.
All methods of irrigation are suitable, but furrow ir- Management of.'vegetation should be based on taking
rigation is the most common. Barnyard manure and com- half and leaving half of the total annual production. Seed-
mercial fertilizer are needed for top yields. ing is difficult and costly because numerous tillage prac-
a.
Wiiidbreaks and environmental plantins of trees and .tices are required to eliminate the saltgrass sod.
r shrubs commonly grown in the area are. generally well Switchgrass, western wheatgrass, alkali sacaton, tall
wheatgrass, and tall fescue are suitable for seeding. They
suited to this soil. Cultivation to control competing
vegetation should be continued for as many years as can be seeded into a clean, firm seedbed. Seedbed
possible following planting. Trees that are.best suited and preparation usually requires more than 1 y'e'ar to
eliminate the saltgrass sod. A grass drill should be used.
have good survival are Rocky Mountain juniper, eastern
redcedar, ponderosa pine, Siberian elm, Russian-olive, and Seeding early in spring has proven most successful
hackberry. The:shrubs best, suited are slcunkbush sumac, Wetland wildlife, especially waterfowl,utilize this unit.
lilac, Siberian peashrub, and American plum. The wetland plants provide nesting and protective cover,
y as well as some food: The nearby irrigated cropland,
This soil can produce habitat elements that are highl
suitable for openland wildlife including pheasant, cotton- where wildlife obtain much of their food and find protec-
tail, and mourning dove. Such crops as wheat, corn, and tive-cover, makes this unit valuable to both wetland and
.alfalfa provide -suitable habitat for openland wildlife, openland wildlife.
especially pheasant. Tree and shrub plantings and Openland wildlife,especially pheasant, use this unit for
undisturbed nesting cover would enhance openland wil- cover and nesting. Deer find excellent cover in some
dlife populations. - , areas.
This Altvan soil has fair to good potential for urban These valuable wildlife areas should be protected from I
and recreational development. The chief limiting soil fea- fire and fenced to prevent encroachment and overuse by
tures for urban development are the shrink-swell poten- livestock.They should not be drained.
tial .of the subsoil as it wets and dries and the rapid These soils have good potential as a source of sand and
permeability of the sand and gravel substratum. Septic gravel. Capability subclass VIw; Salt Meadow range site.
tank absorption fields function properly, but in places the — quo s an quepts, flooded. This nearly leve
map unit is in depressions in smooth plains and along.the
substratum does not contain enough fines to properly
filter the leachate. Sewage lagoons require sealing, bottoms of natural drainageways throughout the survey
Lawns, shrubs, and trees grow well. Capability subclass area. Aquolls, which have a dark colored surface layer,
IIe irrigated. make up about 56 percent of the' unit. Aquepts, which
3--Aquolls and Aquents, gravelly substratum. This ' have a lighter colored surface layer, make up about-25
nearly level map unit is on bottom lands and flood plains percent. About 20 percent is soils that are well drained
of all the major streams in the survey area. Aquolls, and soils that have sandstone or shale within 48 inches of
which have a dark colored surface layer, make up about the surface.
WELD COUNTY, COLORADO; SOUTHERN PART 29
have good survival are Rocky Mountain juniper, eastern The potential native vegetation is dominated by
redcedar, ponderosa pine, Siberian elm, Russian-olive, and western wheatgrass and blue.grama. Buffalograss is also �^
:kberry. The shrubs best suited are skunkbush sumac, present. Potential production ranges from 1,000 pounds
_ac, Siberian peashrub;'and American plum. per acre in favorable years to 600 pounds in unfavorable
Wildlife is an important secondary use of this soil. The years. As range condition deteriorates, a blue grama-buf-
cropland areas provide favorable habitat for ring-necked falograss sod forms. Undesirable weeds and annuals in-
pheasant and mourning dove. Many nongame-species can vade the site as range condition becomes poorer.
be attracted by establishing areas for nesting and escape Management of vegetation of this soil should be based
cover. For pheasants, undisturbed nesting cover is essen- on taking half and leaving half of the total annual produc-
tial and should be included in plans for habitat develop- tion. Range pitting can help in reducing runoff. Seeding is
ment, especially in areas of intensive agriculture. desirable if the range is in poor condition. Western
This soil has fair to poor potential for urban develop- wheatgrass, blue grama, sideoats grama, buffalograss, pu-
ment. It has moderate to high shrink swell, low strength, bescent wheatgrass, and crested wheatgrass are suitable
and moderately slow permeability. These features create for seeding. The grass selected should meet the seasonal
problems in dwelling and road construction. Those-areas requirements of livestock. It can be seeded into a clean,
that have loam or sandy loam in the lower part of the firm sorghum stubble, or it can be drilled, into a firm
substratum are suitable ;for septic tank absorption fields prepared seedbed. Seeding early in spring has proven
and foundations. Some areas of this soil ate adjacent to most successful.
streams and are subject to occasional flooding. The poten- Windbreaks and environmental plantings are generally
tial is fair for such recreational development as camp and well suited to this soil. Cultivation to control competing
picnic areas and playgrounds. Capability class I irrigated. vegetation should be continued for as many years as
42—Nunn clay loam, 1 to 3 percent slopes. This is a. possible following planting. Trees that are best suited and
deep, well drained soil on terraces and smooth plains at have good survival are Rocky Mountain juniper, eastern
elevations of 4,550 to 5,150 feet. It formed in mixed allu- redcedar, ponderosa pine, Siberian elm, Russian-olive,and
vium and eolian deposits. Included in mapping are small; hackberry. The shrubs best suited are akunkbush sumac,
long and narrow areas of sand and gravel-.deposits and lilac, Siberian peashrub, and American plum.
small areas of soils that are subject to occasional flooding. Wildlife is an important secondary use of this soil. The
Some leveled areas are also included. cropland areas provide favorable habitat for ring-necked
Typically the surface layer of this Nunn soil is grayish pheasant and mourning dove. Many nongame species can
iwn clay loam aobut 9 inches thick. The subsoil is light be attracted by establishing areas for nesting and escape
.,rownish gray clay loam about 14 inches thick.The upper cover. For pheasants,undisturbed nesting cover is essen-
part of the substratum is light brownish gray clay loam. tial and should be included in plans for habitat develop-
The lower part to a depth of 60 inches is brown sandy ment, especially in areas of intensive agriculture. Range-
loam. • land wildlife, for example, the pronghorn antelope, can be,
Permeability is moderately slow. Available water attracted by developing livestock watering facilities,
capacity is high. The effective rooting depth is 60 inches managing livestock grazing, and reseeding where needed.-
or more. Surface runoff is medium, _and the erosion This soil has fair to poor potential for urban develop=
hazard is low. ment. It has moderate to high shrink swell, low strength,
In irrigated areas this soil is suited to all crops corn- and moderately slow-permeability. These features create
monly• grown in the area, including corn, sugar beets, problems in dwelling and road construction. Those areas
beans, alfalfa, small grain, potatoes, and onions. An exam- that have loam or sandy loam in the lower part of the'
ple of a suitable cropping system is 3 to 4 years of alfalfa substratum are suitable'for septic tank absorption fields
followed by corn, corn:for silage, sugar beets,small grain, and foundations. Some areas of this soil are adjacent to
orbeans. Generally such characteristics as the high clay streams and are subject to occasional flooding. The poten-
content or the rapidly permeable substratum slightly tial is fair for such recreational development as camp and
restrict some crops. picnic areas and playgrounds. Capability subclass IIe ir-
All methods of irrigation are suitable, but furrow ir- rigated, fIlc nonirrigated; Clayey Plains'range site.
rigation is the most common. Proper irrigation water . 43—Nunn loamy sand,11 to 1 percent slopes. 'Phis is a
management is essential. Barnyard manure'and commer- deep, well drained soil on terraces at elevations of 4,700
cial fertilizer are needed for top yields. to 4,900 feet. It formed in alluvium along Box Elder
In nonirrigated areas most of the acreage is:in small Creek. Included in mapping are small areas of soils that
grain and it is summer fallowed in alternate years: have a loamy subsoil and small areas of soils that are sub-
Winter wheat is the principal crop. The predicted average ject to rare flooding.
yield is 33 bushels per acre. If the crop ig winterkilled Typically the surface layer of this Nunn soil is brown'
spring wheat can be:seeded. Generally precipitation is too loamy sand overburden about-9 inches thick. The subsoil
low for beneficial use of fertilizer. is dark to very dark grayish brown clay loam about 21
( ltubble mulch fanning, striperopping, and. minimum til- inches thick. The substratum to a depth of 60 inches is
sage are needed to control soil blowing and water erosion. loamy very fine sand, loamy sand, or sand.
EXHIBIT J -VEGETATION INFORMATION
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.10 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
(a) Description of present vegetation types including estimates of cover and height of
principal species in each life-form represented;
This information is provided in the attached Exhibit J Vegetation Information, prepared by
Savage and Savage environmental firm, located at 4610 Haystack Drive, Windsor,
Colorado 80550, based on a site investigation conducted on May 26, 2005.
(b) Relationship of present vegetation to soil types;
This information is provided in the attached Exhibit J Vegetation Information, prepared by
Savage and Savage environmental firm, located at 4610 Haystack Drive, Windsor,
Colorado 80550, based on a site investigation conducted on May 26, 2005.
(c) Estimates of annual production and carrying capacity if the choice for reclamation is
for range or agriculture.
The attached Savage and Savage Information has estimated production based on soils
information. Range or agricultural use is not proposed for reclamation.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit J-1
6.4.10 Exhibit J— Vegetation Information
1 (a) Vegetation Description
Savage and Savage conducted a vegetation assessment for the Hall-Irwin proposed
Parker/Dersham Resource site on May 26, 2005. Weather during the site investigation
was warm, dry, and clear with temperatures in the mid 80's.
The vegetation of the site has been historically altered from native conditions through
agriculture, grazing, and development of residential and commercial concerns. There are
no native vegetation communities extant on the parcels. Both parcels contain vegetation
that can be categorized as mesic/xeric introduced ruderal herbaceous seral. The visually
dominant species include whitetop (Cardaria draba) a state listed noxious weed, Canada
thistle (Cirsium arvense) also a state listed noxious weed, annual mustards (Descurainia
species), and curly dock(Rumex crispus), a native early seral stage invader 1brb. There is
no developed tree or shrub overstory or understory. Total vegetation cover of the
existing vegetation community was estimated at 50 percent, and the average height of the
dominant species was 0.4 meters.
There was no evidence of any listed or candidate plant species of special concern.
1 (b) Relationship to Soils
There is no significant correlation between the vegetation currently on the parcels and the
soils of the project site. The dominant plant species are introduced weedy ruderal species
that are opportunistic and early seral in growth habits. They are often found in disturbed
or abandoned agricultural areas such as these parcels where weed management has not
been undertaken.
1 (c) Carrying Capacity
The majority of the soils identified by the NRCS (USDA, 1980) in the parcels fall within
the Aquolls and Aquepts, gravelly substratum category. Native vegetation would have
been dominated by alkali sacaton, switchgrass, and western wheatgrass. Potential
production ranges from 2,000 (unfavorable years) to 3,000 (favorable years) pounds per
acre.
2 Relation of Vegetation to Existing Topography
Currently, the vegetation on the parcels is not significantly correlated with the
topography at the project site. Slight elevational differences in the topography yield
greater or lesser growth of the ruderal species dependent on relative amounts or moisture
and organic and.day content within the soil.
l
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Literature Cited
United States Department of Agriculture, Soil Conservation Service. 1980. Soil
Survey of Weld County, Colorado: Southern Part.
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EXHIBIT K- CLIMATE INFORMATION
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.11 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
Provide a description of the significant climatological factors for the locality.
This property is in a semi-arid continental climate strongly influenced by the Rocky Mountains. The
area is usually warm in the summer with frequent hot days. In winter, periods of very cold weather
are caused by artic air moving in from the north or northwest. Milder periods occur when westerly
winds are warmed as they move down slope off of the mountains to the west.
Weather monitoring data is not available from the site. The nearest weather monitoring station is
the Western Regional Climate Center weather station at Brighton, Colorado(elev. 4976). The
attached table from the Western Regional Climate Center weather station shows the average
annual temperature and total annual precipitation. Most of the precipitation occurs as rainfall
during the warmer part of the year with the heaviest rainfalls in the late spring and early summer.
Winter snowfall is frequent but the snowcover usually melts quickly during the milder periods.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit K-1
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EXHIBIT L - RECLAMATION COSTS
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.12 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
We have selected the phase of the mining that includes the largest area disturbed at one time to
calculate the potential reclamation liability. This will occur during Phase 2. Assuming the entire
Phase is mined, with no reclamation. Although Phase 3 has larger surface area, this Phase would
be mined at a 3:1 slope and therefore at any time during mining, would not hold the greatest
liability for reclamation.
• Phase 1 would be 100% mined and 90% reclaimed. Phase 1 would be completely
backfilled to rough finish grade. Phase 1 would require final grading, topsoil placement,
seed and mulch.
• Phase 2 would be 100% mined and 0% reclaimed. Phase 2 would require backfill to rough
finish grade(estimated to be 30 feet deep based on bore logs), final grading,topsoil
placement, seed and mulch.
• Phase 3 would be 0%mined and therefore no reclamation is required.
• The Landscape Sales Yard includes the scale, scale house, access road and landscaping
materials. The scale, scale office, and landscape materials are saleable and therefore no
cost for reclamation. The foundation for the scale and office will require demolition. The
area will require topsoil placement, seed and mulch.
• Although Phase 3 will not be mined at this stage, the slurry wall surrounding Phase 3 is
proposed to be installed prior to exposure of groundwater. Therefore we request the
option for 20% bonding of this cost.
• There is no processing activity proposed at this site, therefore no associated reclamation.
Please refer to the attached table for estimates of quantities and associated costs.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit L.1
Attachment for Exhibit L
Parker/Dersham Resource - Table for Reclamation Cost Estimate
Activity Quantity Units Unit Costs Cost
A. Phase 1 -100%mined and 90%reclaimed•approximately 7.4 acres of
disturbance. If disturbed,the concrete irrigation ditch will have been
replacedlrelocated. Phase 1 will be completely backfilled and require
final shaping/grading,topsoil placement,seed and mulch.
1 Final grade and place 6"of topsoil on the entire disturbed area 5,969 CY $ 0.75 $ 4,477.00
2 Seed and mulch 7.4 Acres $ 800.00 $ 5,920.00
A. Phase 2.95%mined and 0%reclaimed. Phase 2 will require 100%
backfill with overburden material,shapinglgrading,topsoil placement,
seed and mulch.
1 Backfill mine area using overburden and shape to pre-mining grade 542,080 CY $ 0.75 $ 406,560.00
3 Replace 6"of topsoil on the entire disturbed area 9,035 CY $ 0.75 $ 6,776.00
4 Seed and mulch 11.2 Acres $ 600.00 $ 8,960.00
C Dewatering trench would be excavated to the mining area pit bottom
elevation. Dewatering pumps and tanks are a commodity.
D. Phase 3•Would be not be mined et --- --- --- --
E. Reclaim Stockpile Areas-3 acres
1 Scarify ground 3.0 Acres $ 150.00 $ 450.00
2 Replace 6"of topsoil 2,420 CY $ 0.75 $ 1,815.00
3 Seed and mulch 3.0 Acres $ 800.00 $ 2,400.00
F Landscape Sales Area. Landscaping materials are a commodity and
therefore no cost would be Incurred for reclamation. In addition,the
mobile sales office and scale will have a value that would offset any
cost for reclalmation.
1 Remove concrete footings for office 8 CY $ 65.00 $ 520.00
2 Remove concrete base for scale 10 CY $ 65.00 $ 650.00
3 Scarify ground 5.5 Acres $ 150.00 $ 825.00
4 Spread 6"topsoil 4,437 CY $ 0.75 $ 3,327.50
5 Seed and Mulch 5.5 Acres $ 800,00 $ 4,400.00
G. Slurry Wall @ 20%Installation Cost per DMG Bonding Requirement.
Assuming a total of 3280 If of wall,assumed depth of 30'+3'Into
base
1 Excavation,Materials and Labor and Dewatedng 21,648 Face Ft $ 3.00 $ 64,944.00
Total Disturbance Costs $ 512,024.50
Liability Insurance and Performance Bond(2:60%)-Based on DMG estimate $ 13,312.64
Contractor Overhead and Profit(10%) .Based on DMG estimate $ 51,202.45
Contractor Mobilization/Demobilization $ 25,601.23
Administration(5%)-Based on DMG estimate $ 25,601.23
Total $ 627,742.04
Hall-Irvin Corporation Exhibit L Attachment
Parker/Dersham Resource MLRB 112 Application
EXHIBIT M - OTHER PERMITS AND LICENSES
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.13 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
The Operator will apply for the following permits prior to mining:
Colorado Department of Public Health and Environment
• Air Pollution Emission Notice (APEN) Permit
• Colorado Discharge Permit System (CDPS) and Stormwater Management Plan
Weld County
• Special Use Application
• Flood Hazard Development Permit
Colorado State Engineer's Office
• Temporary Substitute Supply Plan
• Well Permit
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit M- 1
EXHIBIT N - SOURCE OF LEGAL RIGHT-TO-ENTER
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6A.14 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations. Please refer to the attached legal-right-to-enter documents.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit N- 1
I8-10-2005 08:48am From-HALL IRX11I1 CORP rv(u3a[tl[tl4 I-tllo r.uuuuu[ r-ovo
LOT HOLnIN"
October 14,2005
Jeff Gregg,Resources Manager
Hall-Irwin Corporation Aggregate Division
301 Centennial Drive
Milliken, Colorado 80543
Dear Mr. Gregg:
In exchange for good and valuable consideration, in hand paid, Lot Holding Investments, LLC
hereby grants to Hall Irwin Corporation the right to enter into the real property situate in SE/4
§36 TIN R67W of the 6th PM, County of Weld, State of Colorado, described as follows (the
"Property"):
156 WCR 23%a, also known as Subdivision Exemption No. 656 recorded December
18, 1997 at Reception No.2585131, and
11585 WCR 2, also known as Recorded Exemption No. 1468-36-4RE2070
recorded December 18, 1997 at Reception No.2585132
You and your officers,employees,contractors,and agents have permission to enter upon the
Property for all purposes, including the exploration for gravel,sand and aggregate. We hereby
confum that you have authority and right to execute all documents required to apply for and
obtain permits and the like to mine gravel, sand and aggregate on the Property. Following
permitting,Lot Holding agrees to enter into a Sand,Gravel and Aggregate Mining Lease to
remain in effect until mining activity ceases. The permission granted by this letter shall be
effective immediately, and shall remain in effect until superseded by a Sand,Gravel and
Aggregate Mining Lease or until October 31,2007,whichever comes first.
Lot Holding Investments,LLC %At.•�.Q si
•
By: i
Stephen R. son,President ✓ O o0
I.'•. Cll \ Q.
STATE OF COLORADO ) ` OP coV"
ss. IleaiuAssbn EcIres MOM
COUNTY OF WELD )
The foregoing instrument was acknowledged before me on October PI, 2005 by Stephen R.
Hanson, as President of Lot Holding Investments, LLC. Witness my hand and seal. My
commission expires: 4.49.0.07 n1, „aa. M n
Notary Public (Q•�
I �
1760 Broad Street . Unit E • Milliken, Colorado . 60543
•
SAND, GRAVEL AND AGGREGATE MINING LEASE
This Sand, Gravel and Aggregate Mining Lease ("Lease"), is entered into and effective as of
2 -Li 2005 ( Effective Date")by and among Robert L. Parker and Valerie A. Parker, individuals,
the mailing address of whom, for purposes of this Lease, is P.O, Box 1255,'Brighton, Colorado 80601.
("Landlord"), and Hall-Irwin Corporation, a Colorado corporation, 'the mailing address of which, for
purposes of this Agreement, is P.O. Box 2150, Greeley, Colorado 80632 ("Tenant"). The foregoing may
hereinafter be individually referred to as"party and collectively referred to as the"parties".
RECITALS
A. WHEREAS, Landlord owns the property described on Exhibit A attached hereto("Property"); and,
B. WHEREAS, Tenant desires to mine sand,'grevel,minerals and aggregate("Aggregate") from the
Property; and
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C. WHEREAS, Landlord desires to have Tenant mine Aggregate from the Property:
AGREEMENT
NOW, THEREFORE, in consideration of the mutual promises and covenants contained herein, Landlord
hereby leases to Tenant the Property for the purposes of operating an Aggregate mine.
1: Incorooretion of Backoround statemenf by Reference. All of the Recitals above are incorporated
herein by reference and made a part of this Lease.
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2. Aggregate to be Mined. Tenant shall have the right,"but not the obligation, to remove the
overburden and Aggregate from the Property in accordance With the Colorado Department of
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Mineral and Geology approved reclamation plan for the Property("Reclamation Plan"). Under no
circumstance will Tenant be obligated to remove anything if it would- be, in Tenant's sole
Judgment, unprofitable or uneconomical to do so. As construed in this Lease the term
"overburden" shall mean all dirt, topsoil and other natural materials situated on the surface of the
Property and overlying the deposits of Aggregate.
•
3. A royals. Tenant shall be responsible for applying for and obtaining all permits and approvals
necessary to legally conduct its operations on the Property contemplated by this Lease
("Approvals"). • Landlord; for itself•and its .successors and assigns, shall .cooperate In. all . .
• reasonable ways with Tenant to obtain the Approvals and shall furnish, without cost, all
information regarding the Property;which it has insofar as such information 'relates to the
purposes of this Lease. Tenant shall be solely'responsible for all costs and fees of obtaining the
Approvals which shall be the sole and separate property of Tenant. Notwithstanding anything '
else contained in this Lease, in the event that the Tenant is unable to obtain any of the Approvals
then the Tenant may, but shall not be obligatedto, terminate this Lease by giving written notice to
the Landlord.
4. Term. The term of this Lease shall commence on the Effective Date and shall continue until the
third (3m) anniversary of the date upon which the last of the Approvals Is obtained by the tenant,
and shall automatically extend for a period not to exceed one (1) year, such extension to remain
•
in•effect for so long as Aggregate production occurs. Notwithstanding anything else contained in
the Lease, this Lease shall terminate 'on the fourth.(4) anniversary of the date upon which'the
last of the Approvals is obtained by the Tenant unless this Lease is extended in a written
agreement executed by the Tenant and Landlord. •
STATE OF COLORADO )
ss.
COUNTY OF WEL )
The fore n meet wys acknowle ed before me on „Qt
by
of Robert L. Parker and Valerie A. Parker.
Witness my hand and official seal.
My Commission Expires
My commission expires 7/812096
Notary bli
STATE OF COLORADO )
) ss.
COUNTY OF WELD ) •
The fore�Q ping instrument was acknowledged before me on r Ti'. I f0
by ( /(n')'f /Mini 11Xiti .x Q as
of Hall-Irwin Corporation. d?ptOTAI(p'�
Witness my hand and official seal. NTti PUBLIC/4>
My commission expires 5/7/67 liNFCot /
Notary Public
CO,.Sr I'd"SOW. 0.0V D .ttNMEEA Sm,GRIMM/JO AGIAEOAM woo LAME 10404*e n
•
EXHIBIT A TO SAND, GRAVEL AND AGGREGATE MINING LEASE
•
DATED
A part of:the Southwest.one-quarter of the Northeast one-quarter :Qt.se0tion
36, Township 1 North, Range 67 West of the 6th Principal'Neridian','.Weld
County,•Colorado,.described as follows:
Beginning at the .Northwest;corner of the Southwest .one-quarter of the North-
east one-quarter of said section .36; thence 889'51'15"E on an assuiaed.bearing
along the North line of the 'South one-half of the. Northeast;one-quarber of
said•Seotian'36 a •distance:of 185.00 feet to the True :Point of Beginning=
thence continuing 689'51 '15•R along said North line a distance of 649.64
' feet; thence S00 23'08`W•a distance of 1318.37:feet to;a 'point nn .the 'south
line of.the South ohe-half of the .Northeast one-quarter;.of .aaid,Segtlon 361
thence $89'52'10"W aping said South line a distance ot'825:77 feet to the •
southwest corner of'the Southwest one-quarter of the Northeast One-quarter
of said Section 361 'thence N00.00'o0•E along-the West line of the.Southwest
ne-quarter of the Northeast one-quarter. Of said Section .36 a distance of
•
24.58 feet; thence N88'48'52"E a distance of .167.00 feet; thence N07'.40'45"W
a distance of 328.29 feet;thence N00.34'41'W.a distance of:82.53 feet; thence
• N12.32'04"E a distance of 289.08 feet.to the True Point of .Beginning.
Contains: .:25. 129 Acres more or less.
•
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co.......u"ww Gm cmm..ro.m&"uNUavc4Lu".M41co.RR uwa�11240&x,,
EXHIBIT O - OWNERS OF RECORD OF AFFECTED LAND (SURFACE AREA)
AND OWNERS OF SUBSTANCE TO BE MINED
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.15 of the Colorado Mined Land Reclamation Board Construction Material Rules and
regulations:
Owners of Surface Area and Owners of Substance to be mined
Ownership information is provided on the Mining Plan Map in Exhibit C.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit 0-1
LIST OF MINERAL OWNERS AND MINERAL LESSEES
(Dersham)
Subject Property:
Township 1 North, Range 67 West, 6th P.M., Weld County, CO
Sec. 36: Lot A of Recorded Exemption No. 1469-36-4-RE 2070 and Subdivision
Exemption No. 656, both part of the SE%
Crews & Zeren, LLC, a mineral title company, states that to the best of its
knowledge the following is a true and accurate list of the names and addresses of the
mineral owners and mineral leasehold owners having an interest in the Subject Property,
based upon the real property records of Weld County, Colorado, as verified through
October 20, 2005. A photocopy or facsimile of this list shall, for all purposes, be as valid as
the original hereof.
Dated this 9'h day of November, 2005.
Crews & Zeren, LLC
By: William G. Crews, CPL
Certified Professional Landman #3477
Mineral Owners Mineral Leasehold Owners:
Lot Holding Investments. LLC Merit Partners, L..P.
1760 Broad Street, Suite E Merit Energy Partners III, L.P.
Milliken, CO 80543 Merit Energy Partners D-III, L.P.
13727 Noel Road, Ste. 500
S. Paige Dersham Dallas, TX 75240
794 Jasmine
Denver, CO 80220
Penny L. Dersham
1361 Syracuse St.
Denver, CO 80220
Crews d'Zeren,LLC
Oil and Gas Title Services
P.O. Box.336337 (970)351-0733
Greeley, CO 80633.-0606 Page 1 of 2 fax(303)484-2110
By acceptance and use of this list, the client and its agents agree to all of the following:
William G. Crews ("Crews") and Cynthia A. E. Zeren ("Zeren") are Certified Professional Landmen
certified by the American Association of Petroleum Landmen who have been asked by Client or
Client's agent to provide listings of mineral estate owners entitled to notice pursuant to §§ 24-
65.5-103 or 31-23-215, C.R.S., as provided under the Surface Development Notification Act,
Colorado Revised Statutes §24-65.5-101 et seq. Such lists will be prepared by Crews or Zeren,
although the Client's contract is with, and all payments are due to, Crews & Zeren, LLC ("C&Z"), a
Colorado limited liability company of which Crews and Zeren are the only members. Neither
Crews nor Zeren is an attorney licensed to practice law.
Crews and Zeren have agreed to prepare listings of mineral estate owners for the Client only if
the Client agrees that the liability of Crews, Zeren and C&Z in connection with such services shall
conclusively be limited to the amount paid by the Client to C&Z for such services. Crews, Zeren
and C&Z make no warranty, express, implied or statutory, in connection with the accuracy,
completeness or sufficiency of any such listing of mineral estate owners. In the event any such
listing proves to be inaccurate, incomplete, insufficient or otherwise defective in any way
whatsoever or for any reason whatsoever,the liability of Crews, Zeren and C&Z shall never
exceed the actual amount paid by Client to C&Z for such listing.
In order to induce Crews, Zeren and C&Z to provide such services, Client does hereby agree to
indemnify and hold Crews, Zeren and C&Z harmless from and against all claims by all persons
(including but not limited to Client) of whatever kind or character arising out of the preparation and
use of each such listing of mineral estate owners, to the extent that such claims exceed the actual
amount paid by Client to C&Z for such listing.
Client specifically intends that both the foregoing limitation on liability and the foregoing
indemnification shall be binding and effective without regard to the cause of the claim, inaccuracy
or defect, including but not limited to, breach of representation, warranty or duty, any theory of tort
or of breach of contract, or the fault or negligence of any party (including Crews, Zeren and C&Z)
of any kind or character(regardless of whether the fault or negligence is sole, joint, concurrent,
simple or gross).
Crews et?Zeren,LLC
oilan tGas Tt&Services
P.O. Box336337 (970)351-0733
Greeley, CO 80633-0606 Page 2 of 2 Fax(303)484-2110
LIST OF MINERAL OWNERS AND MINERAL LESSEES
(Parker)
Subject Property:
Township 1 North, Range 67 West, 6th P.M., Weld County, CO
Sec. 36: Lot B of Recorded Exemption No. 1469-36-1-RE 1352, being part of the NE%
Crews & Zeren, LLC, a mineral title company, states that to the best of its
knowledge the following is a true and accurate list of the names and addresses of the
mineral owners and mineral leasehold owners having an interest in the Subject Property,
based upon the real property records of Weld County, Colorado, as verified through
October 20, 2005. A photocopy or facsimile of this list shall, for all purposes, be as valid as
the original hereof.
Dated this 10th day of November, 2005.
Crews & Zeren, LLC
By: illiam G. Crews, CPL
Certified Professional Landman #3477
Mineral Owners Mineral Leasehold Owners:
Robert L. &Valerie A. Parker Merit Partners, L..P.
P.O. Box 1255 Merit Energy Partners III, L.P.
Brighton, CO 80601 Merit Energy Partners D-lll, L.P.
13727 Noel Road, Ste. 500
Kerr-McGee Rocky Mountain Corp. Dallas, TX 75240
1999 Broadway, Suite 3600
Denver, CO 80202 Petroleum Management LLC
20203 Highway 60
Platteville, CO 80651
Hall-Irwin Corporation
P.O. Box 2150
Greeley, CO 80632
Crews eh'Zeren,EEC
Oil amigos Ttk Services
P.O. Box336337 (970)351-0733
Greeley, CO 80633-0606 Page 1 of 2 Fax(303)484-2110
By acceptance and use of this list, the client and its agents agree to all of the following:
William G. Crews ("Crews") and Cynthia A. E. Zeren ("Zeren") are Certified Professional Landmen
certified by the American Association of Petroleum Landmen who have been asked by Client or
Client's agent to provide listings of mineral estate owners entitled to notice pursuant to §§ 24-
65.5-103 or 31-23-215, C.R.S., as provided under the Surface Development Notification Act,
Colorado Revised Statutes §24-65.5-101 et seq. Such lists will be prepared by Crews or Zeren,
although the Client's contract is with, and all payments are due to, Crews & Zeren, LLC ("C&Z"), a
Colorado limited liability company of which Crews and Zeren are the only members. Neither
Crews nor Zeren is an attorney licensed to practice law.
Crews and Zeren have agreed to prepare listings of mineral estate owners for the Client only if
the Client agrees that the liability of Crews, Zeren and C&Z in connection with such services shall
conclusively be limited to the amount paid by the Client to C&Z for such services. Crews, Zeren
and C&Z make no warranty, express, implied or statutory, in connection with the accuracy,
completeness or sufficiency of any such listing of mineral estate owners. In the event any such
listing proves to be inaccurate, incomplete, insufficient or otherwise defective in any way
whatsoever or for any reason whatsoever, the liability of Crews, Zeren and C&Z shall never
exceed the actual amount paid by Client to C&Z for such listing.
In order to induce Crews, Zeren and C&Z to provide such services, Client does hereby agree to
indemnify and hold Crews, Zeren and C&Z harmless from and against all claims by all persons
(including but not limited to Client) of whatever kind or character arising out of the preparation and
use of each such listing of mineral estate owners, to the extent that such claims exceed the actual
amount paid by Client to C&Z for such listing.
Client specifically intends that both the foregoing limitation on liability and the foregoing
indemnification shall be binding and effective without regard to the cause of the claim, inaccuracy
or defect, including but not limited to, breach of representation, warranty or duty, any theory of tort
or of breach of contract, or the fault or negligence of any party (including Crews, Zeren and C&Z)
of any kind or character(regardless of whether the fault or negligence is sole, joint, concurrent,
simple or gross).
Crews 6'Zeren,LLC
Mani Gas Title Services
P.O. Box336337 (970)351-0733
Greeley, CO 80633-0606 Page 2 op 2 `fax(303)484-2110
EXHIBIT P - MUNICIPALITIES WITHIN Two MILES
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6,4.16 of the Colorado Mined Land Reclamation Board Construction Material Rules and
regulations:
List any municipalities within two miles of the proposed mining operation and address of
the general office:
City of Brighton
22 South 4th Avenue
Brighton, CO 80601
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit P .1
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EXHIBIT Q - PROOF OF MAILING OF NOTICES TO COUNTY COMMISSIONERS
AND CONSERVATION DISTRICT
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.17 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations:
SENDER:COMPLETE THIS SECTION COMPLETE THISSECTIQNON DELIVERY'r i
■ Compldte items i,2,and 3..Also'demist/its: A Sryaature
Item 4 If Restricted Denitrify i de lrrid. 1 O Agent
• bruit your name aitd address on the reverse ) C Mdregq i
so that we can return the card to you;
• Attach this oard'to the back of the mallpiece, D' R „' C. Date of Delivery
or on the front If space permits. e „ .
1. Article Addressed to: s" l delivery address different from Item 1? 0 Yes
If nal enter delivery address belowt. O No
BcpicleP (� tyvimrssiol-teppp ,r .
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0 flerrlstared eturn Receipt for Merchandise i _.
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/riaeerarryprnserVIce/ebel, ;_ nos' D3.. 0000. 6417 7'r;' `' i
,.
PS Form 3811,February 2004 Domestic RetutriRec'elpt - iO2ssso2.M.1540
SENDEnR:COMPLETE THIS SECTION i C•M•LEPETHISSEC71•NON•ELIVE•`4
■ Complete nary,"s:1,2 and 3.Also ddlt cjret nature
Item 4 If Postdated Delivery Is deaited -.yon h Il , V [ Agent j
■'Print your name and Address on the rat/arab ,` I ,.,„ U Lf
so that we cap return the card to youy a e) L to Addressee i
Is Attach this cardto the bacK of the malipiooe ' Rsbe p t1y/pddtaa Name) C. Data a/l�a Na
er on the front if space permits. r e
t. /ddtsfe Addrea'sail tbr, . .`t7, is delivery different from seat 14 l7 Yee
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1/4 H•glsterep:. etortt Receipt for Merchandise
0 Insured Mali 0 O;o.o. I
4, Reatripted Dbeiwi y?fare Peel, 0 Yes I
2. Article Number - j
(rrerrsferfromseMcalabep : 7005 0390 0000 6417 7285 1
1 PS Porm 3811,February 2004' Domestic plaint RBcelpt 102595-02•M-1640
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit Q- 1
'� EXHIBIT R - PROOF OF FILING WITH COUNTY CLERK OR RECORDER
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.18 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations.
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit R- 1
unn uu cuuu FRI uy'JU [II VILLA/ w VVvl rnn nu, ,ruaucucs, r, ut
CIVIL RES'IURCES,LLC
ENOINg,cp 1 & PLANNGR6
January 5,2006
Clerk to the Board of Weld County Commissioners
915 Tenth Street, Rm 317
Greeley,CO 80632
(970)336-7204
RE: Hall-Irwin Corporation 112 Reclamation Permit Application—Parker/Dersham
Resource
To Clerk to the Board:
Enclosed please find a copy of the complete DMG 112 Reclamation Amendment application that
was submitted to the Division of Minerals and Geology(DMG)on behalf of Hall-Irwin Corporation.
The DMG requires us to file a.complete copy of the application with the County Clerk's Office so
that it can be available for public viewing, Please sign below to.indicate that you have received the
above-mentioned application and fax this page bank ;.;bnniediatply(303).833-2850.
Thank you..
Sincerely, .
•
C esources,LLC ' . .
•
• !IllDonna Ortiz `
Planner •1 a
Encl. t__.,...,
__., v
N
0
Confirmation of Receipt:
I have received the complete DMG 112 Reclamation application for Hall-Minis Parker/Dersham
Resource and will put it on file for public viewing.
un 7y Clerk to the Board
the�VOII! Date
451 OAK STREET, SUITE 209• P.O. BOX 680 • FREDERICK, CO 60530 013031833-I 416 4 (3031833-2850 • FAX
EXHIBIT S - PERMANENT MAN-MADE STRUCTURES
The information provided in this Exhibit is intended to satisfy the requirements outlined in Section
6.4.19 of the Colorado Mined Land Reclamation Board Construction Material Rules and
Regulations.
Where mining will adversely affect the stability of any significant, valuable or permanent
man-made structure located within 200 feet of affected land, the applicant may either:
a) Provide a notarized agreement between the applicant and the person(s)having
an interest in the structure, that the applicant is to provide compensation for any
damage to the structure;or
Please refer to the attached engineering stability analysis
b) The applicant shall provide an appropriate engineering evaluation that
demonstrates that such structure shall not be damaged by activities occurring
at the mining operation.
The attached engineering stability analysis for the mining operation considered the
following permanent man-made structures within 200 feet of the affected land boundary
that are owned by others:
Weld County Road 23.75 Gas Well, Pipe and
Weld County,Colorado Appurtenances
Merit Energy Corporation
Weld County Road 23 Y Bataa Oil, Inc.
Weld County, Colorado
Water Line
Weld County Road 2/Baseline Mountain View Water Users
Road/168th Ave Sakata Farms waterline
Weld County, Colorado
Residence/Outbuildings/Fences
Tucson Street Valerie& Robert Parker
Weld County, Colorado Randy Kirkpatrick
Jose& Maria Lujan
Telephone Line and Pedestals
Qwest, Inc. Buildings
Bestway concrete batch plant
Overhead Electric Line
United Power, Inc. Wells
Xcel Energy Valerie& Robert Parker
Randy Kirkpatrick
Gas Line Sakata Farms
Xcel Energy/Public Service Co Jose& Maria Lujan
H.I.B.E., LLC
Hall-Irwin Corporation—Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit S -1
Ditch
Irrigation ditch through Parker parcel
c) Where the structure is a utility, the Applicant may supply a notarized letter stating
that the mining and reclamation as proposed will have no negative effect on their
utility.
Please refer to the attached engineering stability analysis
Hall-Irwin Corporation-Parker/Dersham Sand and Gravel Mine—MLRB 112 Permit Application
Exhibit S-2
CIVIL RESURCES, LLC
ENGINEERS & PLANNERS
January 5,2006
Mr.Jeff Gregg, Resources Manager
Hall-Irwin Corporation
301 Centennial Drive
Milliken,Colorado 80543
Re: Stability Analysis for Parker/Dersham Sand and Gravel Resource
Dear Mr.Gregg:
This letter has been prepared to address the Mine Land Reclamation Board(MLRB)Construction Materials Rule 6,
Section 4, Subsection 19, Exhibit S-Permanent Man-Made Structures(6.4.19, Exhibit S)for the proposed
Parker/Dersham aggregate mine. This letter-describes the project and slope stability calculations carried out to evaluate
the minimum distance between the edge of mining and adjacent structures to avoid damage to the structure.
The site is located approximately on-half mile fror the Routh Platte River The sligf a within parts of east one-half of
Section 36,Township 1 North, Range 67 West,oft he 6th site is gaffeyslly bounded on the
west by Weld County Road (WCR)21.5, the north by WCR 20,47„5..,on th,s south by Baseline Road(168th Ave)and
on the east by the existing Baseline Resource aggregate mine owned l kRall-Irwin,the project Is located in Weld
County, Colorado, as shown on Figure 1.
Approximately three to Your feet of overburden is underlain by a, elatiVely!le p alluvial aggregate deposit.The aggregate
will likely be transported via conveyor td an extsbng processltf lant located tg the north on thattclsting Hall-Irwin site.
Hall-Irwin plans to dewater and dry-mine Phase 1 and 2 at a 0.5:1 (horizontal to valpelope. Phase 3 will be mined
after constructing a perimeter soil-bentonite slurry wall that will tie into the'O'Oi-blurry wall. Phase 3 will mine the
highwall to a slope no steeper than 3:1 (horizontal to vertical)final grade, as indicated in the DMG permit application.
This report lists minimum safe setbacks for mining from structures within 200 feet of the permitted mining boundary
based on stability calculations. Actual setbacks may be greater due to permit limitations,zoning requirements,
construction issues, agreements with owners,extent of economically mineable aggregate,or other issues.
GEOLOGY
The site is located approximately 30 miles east of the foothills of the Colorado Front Range on the western flank of the
Denver Structural Basin. The basin is a downwarp of sedimentary strata that trends north-northwest,parallel to the
mountain front. In the project area,the sedimentary beds dip gently eastward toward the axis of the basin east of the
site. Based on regional geologic mapping (Colton, 1978),the near surface bedrock in the project area is the Paleocene
and Upper Cretaceous Denver and Arapahoe Formations. The bedrock is overlain by upper Pleistocene and Holocene
(Quaternary age)gravel deposits and eolian(wind blown)overburden soils. The gravel deposits exist primarily within the
Broadway Alluvium deposit. The bedrock unit consists mainly of claystone and may contain lenses of siltstone and
sandstone.
451 OAK STREET, SUITE 209 1 P.O. Box 6801 FREDERICK, CO 80530 1 (303) 833-1 41 6 1 (303) 833-2850 - FAX
Jeff Gregg
January 5,2006
Page 2
CIVIL RES'JURCES,L
GEOTECHNICAL CONDITIONS
The mine site is located on a terrace of the South Platte River. Review of regional geologic mapping (Trimble and
Machette, 1979)indicates the site subsurface materials consist of Post-Piney Creek Alluvium most likely overlying
sandstone and claystone bedrock of the Denver Formation. Exploratory borings drilled by Rocky Mountain Consultants
(RMC,2000)primarily along the eastern portion of the site,encountered approximately two to four feet of overburden
topsoil and clay soils overlying approximately 22 to 41 feet of sand and gravel on top of primarily claystone bedrock.
Locations of the property extents and boring locations are shown on Figure 2.The bedrock depths ranged from
approximately 26 feet to 43 feet below the ground surface.There was sufficient information from the bore logs from TH-
3,TH-6, and TH-26(Figure 2)to estimate the attitude of the bedrock plane using the proportional three-point method.
The calculated attitude of the formation at this site was N19 degrees W, dipping at 1 degree to the northeast.
From a geotechnical standpoint,the sand and gravel will form the most of the mine slopes.These soils are generally
strong and stable,particularly when dewatered.
SITE GROUNDWATER
Civil Resources conservatively modeled the groundwater at just below the clayey overburden,four feet below the ground
surface,based on the Rocky Mountain Consultants geotechnical exploration.
STRUCTURES WITH 200 FEET OF DISTURBED AREAS
The known,permanent,man-made structures within 200 feet of the proposed mine area that are not owned by Hall-Irwin
Corporation are listed below:
• WCR 23.5(western boundary),
• WCR 23.75(northern boundary),
• WCR 2/Baseline Road/168th Ave(southern boundary),
• Mountain View Water Users Association water pipeline(south and west)
• Gas well and underground gas pipelines(south and west),
• Underground telephone utilities(south and west),
• Overhead power utilities(south and west),
• Valerie and Robert Parker residence,outbuildings,fence and well (west),
• Randy Kirkpatrick residence,outbuildings,fence and well(west),
• Jose and Maria Lujan residence, outbuildings,fence and well(west),
• Lot Holdings, LLC Residences,outbuildings,fence and wells(west and south),
• Bestway Concrete Batch Plant(east),
• Sakata Farms well(southwest),
EXISTING EASEMENTS
It is our understanding that the following easements exist at the site:
• Mountain View Water Users Association easement to the south and west.
• Railroad easement to the west-abandoned
Mr.Jeff Gregg C—
January 5,2006
Page 3
CIVIL RES-PURCES,LLC
STABILITY ANALYSES
The stability of the proposed mining limits was evaluated(at six sections at Phases 1 and 2 and two sections at Phase 3)
under anticipated and required loading conditions around the perimeter of the site,discussed below. The computer
program XSTABL was used for the analysis. The method for selecting the critical failure surface for each analyzed
loading condition is the following. Modified Bishop's method of analysis is used to find the critical failure surface by
randomly searching with 15 termination points and 15 initiation points(225 failure circles)over a broad range of the
slope surface. This procedure is repeated over different initiation and termination locations until the most critical factor of
safety failure surface is identified. The range is narrowed for the final run of 225 circles to determine the lowest factor of
safety. The final stability run analyzes the critical surface using the Spencer method by inputting the X and Y
coordinates of the circle center and the X, location of the intersection of the circle with the ground surface. The Spencer
method is preferred because it is able to satisfy both moment and force equilibrium,but can only analyze one surface at
a time. Therefore,prior to submitting the final stability run,at least 600 failure surfaces were analyzed to determine the
lowest factor of safety.
The eight cross-section locations were selected to analyze minimum setbacks for stability of structures, using
appropriate surcharge loads,for the mining limits. Phases 1 and 2(Sections A through F)are modeled with a 0.5:1
(H:V) highwall and does not include a slurry wall. All mining slopes in Phase 3 are modeled to be no steeper than 3:1
(H:V). Phase 3 was modeled to include a soil-bentonite slurry wall (Sections G and H).The locations are described
below and shown on Figure 1.
► Section A-A': This section considers the closest distance to WCR 23.75 along the northern margin of Phase 1.
A surcharge of 250 psf was included to model the live load on WCR 23.75.
► Section B-B': This section considers the existing concrete ditch along the southern portion of Phase 1. A high
phreatic surface was included to model the maximum water surface from the ditch.
► Section C-C': This section considers a storage building on the Lujan property along the western margin of the
site. A surcharge of 1500 psf was included to model the dead load from the building.
► Section D-D': This section considers a storage building on the Parker property along the western margin of
Phase 2. A surcharge of 1500 psf was included to model the dead load from the building.
► Section E-E': This section considers the closest distance to WCR 23.5 and utilities in the road ROW along the
western margin of Phase 2. A surcharge of 250 psf was included to model the live load on WCR 23.5.
► Section F-F': This section considers the closest distance to WCR 23.5 along the southern margin of Phase 3. A
surcharge of 250 psf was included to model the live load on WCR 23.5.
► Section G-G': This section considers a storage building on the Kirkpatrick property along the northern margin of
Phase 3. A surcharge of 500 psf was included to model the dead load from the building.The proposed slurry
wall was modeled at 40 feet and 50 feet from the existing property line.
► Section H-H': This section considers the closest distance to the Mountain View Water Users Association
waterline, utilities in the road ROW and WCR 23.5 along the western margin of Phase 3.A surcharge of 250 psf
was included to model the live load on WCR 23.5.The proposed slurry wall was modeled at 40 feet and 50 feet
from the existing property line.
The material index and engineering strengths assumed in this slope stability report are discussed below.
January
Jeff 5,egg
January 5,2006
Page CIVIL RES'JURCES,L
MATERIAL PROPERTIES
Overburden
The index properties for the insitu clay overburden were based on field testing data and on our engineering judgment;
the following parameters have been used to model the overburden.
Dry Unit Moist Unit Saturated Unit Cohesion C'psf Friction Angle 0'°
Weight(pcf) Weight(pd) Weight(pcf)
103 114 126 200 28
Alluvial Sand and Gravel
The sand and gravel is generally medium grained sand, medium dense, poorly to well graded,and generally clean. The
deposit ranges from fine to coarse sand with some silt and occasional rounded to well rounded gravels less than 2-
inches in diameter. The alluvial sand and gravel has been modeled as follows:
Dry Unit Moist Unit Saturated Unit Cohesion C'psf Friction Angle IV"
Weight(pcf) Weight(pct) Weight(pcf)
119 129 130 0 35
Claystone Bedrock
The proposed mine area is generally underlain by claystone bedrock. Claystone is generally a weak bedrock and is
often prone to slope instability and the bedrock foundation strength is critical for the highwall stability. For the claystone
bedrock,two potential strength conditions were considered. These strength conditions are referred to as: 1)peak
strength, and 2) residual strength.
Peak strength is the maximum shear strength the claystone bedrock exhibits. The shear strength is made up of both
cohesion(diagenetic bonding)and internal friction. Under short-term conditions for unsheared claystone, peak strength
governs behavior. If a sheared surface or sheared zone is present within claystone as a result of faulting,slippage
between beds due to folding,past shrink-swell behavior,stress relief,or from a landslide,the cohesion along the
sheared surface is reduced to zero,and the angle of internal friction is decreased,due to alignment of clay minerals
parallel to the shear plane. Under these conditions a claystone exhibits its lowest strength known as residual strength.
Residual strength bedrock occurs in discrete zones, parallel with the sheared surface or zone,whereas fully softened
strength occurs over a broader area. Based on data from other recent jobs,and engineering judgment,we modeled the
claystone as follows:
Dry Unit Moist Unit Saturated Unit
Weight(pcf) Weight(pcf) Weight(pcf) Cohesion C'psf Friction Angle (P'°
116 124 134 Peak= 100 Peak=28
Residual=0 Residual= 15
Soil-Bentonite Slurry
The proposed slurry wall will consist of a mix of the overburden clay and imported bentonite.The resulting mix will
produce a non-Newtonian fluid with some shear strength characteristics based on a reduced friction angle of the
overlying clay overburden. Based on engineering judgment,we modeled the slurry wall as follows:
Dry Unit Moist Unit Saturated Unit
Weight(pcf) Weight(pcf) Weight(pcf) Cohesion C'psf Friction Angle 0'°
NA 110 122 0 26
Mr.Jeff Gregg CO
January 5,2006
Page 5
CIVIL RES'PURCES,LLC
STABILITY ANALYSES RESULTS
Setbacks listed in Table 1 indicate the minimal setback from the structure to the mining limits. The setback distance can
be increased as needed to address other restrictions.
TABLE 1 -SLOPE STABILITY RESULTS AND SETBACKS
Section Location Critical Structure Modeled Surcharge,psf Mining Setback,ft Factor of Safety
AA' North Phase 1 WCR 23.75 250 50 from Property 1.25
BB' South Phase 1 Concrete Ditch 250 50 from Ditch 1.096
CC' West Phasel Storage Building 1500 32 from Property 1.030
DD' West Phase 2 Storage Building 1500 50 from Affected 1.056
Land Boundary
EE' West Phase 2 UtilitiesM/CR 23.5 250 30 from Property 1.009
FF' South Phase 2 Gas Well/Pipe 250 12 from Property 1.052
GG' North Phase 3 Residence 250 50 from Property 2.11
NH' West Phase 3 WaterlineM/CR 23.5 250 50 from Property 2.29
CONCLUSIONS
Based on the stability analyses,the Phase 3(former Dersham Property)proposed extent of mining limits were greatly
' influenced favorably by the proposed 3:1 (H:V)mining slope. As a result,the minimum distances proposed are
recommended more for construction and maintenance than for stability.
LIMITATIONS
Our review is based on regional geologic mapping,present mining plans, borehole data from the adjacent Baseline
Resource property,and stability analyses using typical strength parameters for the various strata in the critical sections.
Should the mining plans change or subsurface conditions vary from those portrayed in this letter,we should be
contacted in order to re-evaluate the potential affects on permanent man-made structures. Stability analyses were run at
the structure in question and were not run on failure surfaces closer to the highwall. Note also that surcharge loads due
to temporary material stockpiles and overburden berms were not considered in the analysis.
Please call with any questions or comments.
Sincerely,
Civil Resour es, LL /14 hot Mark Reine P.E. P.G.
Project Engineer
Attachments: Figure showing site location,boring and cross-section locations,and proposed extent of mining. Input
and output files and graphic profiles of stability analyses are also included.
J:Waiiirwin\Baseline 1Stability analysis report doc
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XSTABL OUTPUT
SECA 11-19-05 12:55
Section A—A': WCR 23.75 NW corner
950 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .250
925
`m 900
N
Y-
tn
X
875
>-
850
825
0 25 50 75 100 125 150 175 200
X—AXIS (feet)
C:IX STABUHIR W lMsactionA.wpd
PROFIL FILE: SECA 11-19-05 12:55 fl
Section A-A': WCR 23.75 NW corner
6 4
.0 942.0 50.0 942.0 1
50.0 942.0 52.0 938.0 1
52.0 938.0 62.0 918.0 2
62.0 918.0 200.0 918.0 3
.0 938.0 52.0 938.0 2
.0 914.0 200.0 914.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 I
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 I
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
5
.0 937.0
10.0 937.0
30.0 930.0
45.0 925.0
62.0 918.0
LOADS
1
.0 20.0 250.0 .0
CIRCL2
15 15
62.0 125.0 12.0 22.0
850.0 8.0 .0 .0
XSTABL File: SECA 11-19-05 12:55
******************************************
* XSTABL *
* *
* Slope Stability Analysis *
* using the *
* Method of Slices
* *
* Copyright(C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description • Section A-A': WCR 23.75 NW corner
SEGMENT BOUNDARY COORDINATES
4 SURFACE boundary segments
Segment x-left y-lefl x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 942.0 50.0 - 942.0 1
2 50.0 942.0 52.0 938.0 1
3 52.0 938.0 62.0 918.0 2
4 62.0 918.0 200.0 918.0 3
2 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 938.0 52.0 938.0 2
2 .0 914.0 200.0 914.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 f
I Water surface(s)have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 5 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 .00 937.00
2 10.00 937.00
3 30.00 930.00
4 45.00 925.00
5 62.00 91.8.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psi) (deg)
1 .0 20.0 250.0 .0
NOTE - Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced
along the ground surface between x = 62.0 ft
and x = 125.0 ft
Each surface terminates between x = 12.0 ft
and x= 22.0 ft
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 850.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by :
Lower angular limit :_ -45.0 degrees
Upper angular limit := (slope angle - 5.0) degrees
************************************************************************
-- WARNING -- WARNING -- WARNING -- WARNING -- (# 48)
************************************************************************
Negative effective stresses were calculated at the base of a slice.
This warning is usually reported for cases where slices have low self
weight and a relatively high "c" shear strength parameter. In such
cases, this effect can only be eliminated by reducing the "c" value.
************************************************************************
USER SELECTED option to maintain strength greater than zero
Factors of safety have been calculated by the :
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 8 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 62.00 918.00
2 54.95 921.78
3 47.94 925.64
4 40.98 929.58
5 34.07 933.61
6 27.20 937.72
7 20.39 941.91
8 20.25 942.00
**** Simplified BISHOP FOS = 1.250 ****
The following is a summary of the TEN most critical surfaces
Problem Description : Section A-A': WCR 23.75 NW corner
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.250 373.41 1508.12 667.25 62.00 20.25 1.900E+07
2. 1.317 88.70 1010.40 96.18 62.00 21.09 3.242E+06
3. 1.369 69.14 974.45 57.48 80.00 21.84 2.223E+06
4. 1.399 74.73 986.21 70.75 93.50 19.61 2.998E+06
5. 1.412 78.38 989.23 75.20 102.50 19.99 3.341E+06
6. 1.414 77.81 991.51 76.24 98.00 19.94 3.143E+06
7. 1.438 65.15 971.28 54.27 75.50 19.50 2.357E+06
8. 1.443 68.49 979.44 62.51 80.00 18.57 2.696E+06
9. 1.445 65.53 974.13 59.25 84.50 15.85 3.122E+06
10. 1.448 60.31 958.63 43.38 75.50 20.41 2.123E+06
* * * END OF FILE * * *
SECS 11-19-05 13:10
Section B—B': Ditch Phase 1/2
sso 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .096
925
0, 900
N
w
X
Q 875
>-
850
825
0 25 50 75 100 125 150 175 200
X-AXIS (feet)
C:\XSTABL\HIR W IMSectionB.wpd
PROFIL FILE: SECB 11-19-05 13:11 ft
Section B-B': Ditch Phase 1/2
11 8
.0 942.0 24.0 942.0 1
24.0 942.0 26.0 939.0 1
26.0 939.0 28.0 939.0 1
28.0 939.0 30.0 942.0 1
30.0 942.0 80.0 942.0 1
80.0 942.0 82.0 938.0 1
82.0 938.0 92.0 918.0 2
92.0 918.0 200.0 918.0 3
.0 938.0 82.0 938.0 2
.0 918.0 92.0 918.0 3
.0 914.0 200.0 914.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 1
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 1
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
6
.0 939.0
40.0 939.0
58.0 936.0
72.0 932.0
85.0 925.0
92.0 918.0
CIRCL2
15 15
72.0 160.0 25.0 32.0
850.0 8.0 .0 .0
XSTABL File: SECB 11-19-05 13:10
******************************************
* XSTABL *
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright (C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description : Section B-B': Ditch Phase 1/2
SEGMENT BOUNDARY COORDINATES
8 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 942.0 24.0 942.0 1
2 24.0 942.0 26.0 939.0 1
3 26.0 939.0 28.0 939.0 1
4 28.0 939.0 30.0 942.0 1
5 30.0 942.0 80.0 942.0 1
6 80.0 942.0 82.0 938.0 1
7 82.0 938.0 92.0 918.0 2
8 92.0 918.0 200.0 918.0 3
3 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 938.0 82.0 938.0 2
2 .0 918.0 92.0 918.0 3
3 .0 914.0 200.0 914.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 1
I Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. I specified by 6 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 .00 939.00
2 40.00 939.00
3 58.00 936.00
4 72.00 932.00
5 85.00 925.00
6 92.00 918.00
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced
along the ground surface between x = 72.0 ft
and x= 160.0 ft
Each surface terminates between x = 25.0 ft
and x= 32.0 ft
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 850.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by :
Lower angular limit := -45.0 degrees
Upper angular limit := (slope angle - 5.0) degrees
************************************************************************
-- WARNING -- WARNING -- WARNING -- WARNING -- (# 48)
************************************************************************
Negative effective stresses were calculated at the base of a slice.
This warning is usually reported for cases where slices have low self
weight and a relatively high "c" shear strength parameter. In such
cases, this effect can only be eliminated by reducing the "c" value.
************************************************************************
USER SELECTED option to maintain strength greater than zero
*************************************************************
** Factor of safety calculation for surface # 196 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -58.3052 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-58.3052) is defined by: xcenter= 50.70
ycenter= 991.99 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 197 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -50.8346 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-50.8346) is defined by: xcenter= 49.32
ycenter= 1023.27 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 198 **
** failed to converge within FWIY iterations **
** **
** The last calculated value of the FOS was-132.5097 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter 52.13
ycenter= 971.07 Init. Pt. = 78.29 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface # 199 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -68.6167 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-68.6167) is defined by: xcenter= 51.43
ycenter= 973.45 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 200 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -86.5860 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-86.5860) is defined by: xcenter= 51.93
ycenter= 963.44 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface # 201 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -79.5591 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-79.5591) is defined by: xcenter= 45.37
ycenter= 1164.16 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 202 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-146.0491 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 51.32
ycenter= 1021.73 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 203 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was 509.2724 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=509.2724) is defined by: xcenter= 54.86
ycenter= 959.78 Init. Pt. = 78.29 Seg. Length= 8.00
** Factor of safety calculation for surface# 204 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-115.2258 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 52.19
ycenter= 962.46 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 205 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was********* **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 53.20
ycenter= 993.83 Init. Pt. = 78.29 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface# 206 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-132.3954 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=********) is defined by: xcenter= 52.15
ycenter= 970.03 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 207 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -43.7650 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-43.7650) is defined by: xcenter= 50.43
ycenter= 984.70 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 208 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -40.1993 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-40.1993) is defined by: xcenter= 50.81
ycenter= 965.67 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 209 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -43.4442 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-43.4442) is defined by: xcenter= 50.83
ycenter.= 971.24 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 210 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was********* **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 53.10
ycenter= 1004.38 Init. Pt. = 78.29 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 211 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -43.6375 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-43.6375) is defined by: xcenter= 48.29
ycenter= 962.02 Init. Pt. = 72.00 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface # 212 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was********* **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 49.98
ycenter= 1095.64 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 213 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -67.1527 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-67.1527) is defined by: xcenter= 48.53
ycenter= 970.59 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 214 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-705.1438 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by:xcenter= 49.80
ycenter= 1001.14 Init. Pt. = 72.00 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface # 215 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-123.0386 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=********) is defined by: xcenter= 49.30
ycenter= 959.23 Init. Pt. = 72.00 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface# 216 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -50.8260 **
** This will be ignored for final summary of results **
Circular surface(FOS=-50.8260) is defined by: xcenter= 46.59
ycenter= 1010.44 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 217 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -79.9907 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-79.9907) is defined by: xcenter= 41.69
ycenter= 1168.89 Init. Pt. = 72.00 Seg. Length = 8.00
*************************************************************
** Factor of safety calculation for surface# 218 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -60.2986 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-60.2986) is defined by: xcenter= 47.79
ycenter= 989.10 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface # 219 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -35.0774 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-35.0774) is defined by: xcenter= 47.10
ycenter= 983.06 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 220 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was-439.8237 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=********) is defined by: xcenter= 49.68
ycenter= 977.81 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 221 **
** failed to converge within FIFTY iterations **
** ** —.
** The last calculated value of the FOS was -79.8454 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-79.8454) is defined by: xcenter= 43.43
ycenter= 1119.97 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface # 222 **
** failed to converge within FIFTY iterations **
**
**
** The last calculated value of the FOS was 353.0378 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FO5=353.0378) is defined by: xcenter= 51.17
ycenter= 957.37 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface # 223 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was -74.8662 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=-74.8662)is defined by: xcenter= 44.73
ycenter= 1077.45 Init. Pt. = 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 224 **
** failed to converge within FIFTY iterations **
**
**
** The last calculated value of the FOS was -39.9017 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface(FOS=-39.9017) is defined by: xcenter= 47.01
ycenter= 990.69 Init. Pt.= 72.00 Seg. Length= 8.00
*************************************************************
** Factor of safety calculation for surface# 225 **
** failed to converge within FIFTY iterations **
** **
** The last calculated value of the FOS was 337.7360 **
** This will be ignored for final summary of results **
*************************************************************
Circular surface (FOS=337.7360) is defined by: xcenter= 50.74
ycenter= 957.67 Init. Pt. = 72.00 Seg. Length= 8.00
Factors of safety have been calculated by the :
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 12 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 109.71 918.00
2 101.89 916.32
3 93.94 915.43
4 85.94 915.35
5 77.98 916.08
6 70.12 917.60
7 62.46 919.91
8 55.08 922.99
9 48.04 926.79
10 41.42 931.28
11 35.28 936.41
12 29.93 941.90
**** Simplified BISHOP FOS = 1.096 ****
********************************************************************
** **
** Out of the 225 surfaces generated and analyzed by XSTABL, **
** 30 surfaces were found to have MISLEADING FOS values. **
** **
********************************************************************
The following is a'summary of the TEN most critical surfaces
Problem Description : Section B-B': Ditch Phase 1/2
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.096 89.15 994.52 79.24 109.71 29.93 3.367E+06
2. L128 77.69 975.95 61.13 97.14 28.54 2.513E+06
3. 1.141 83.69 993.27 77.81 103.43 28.02 3.355E+06
4. 1.162 76.51 978.18 63.62 97.14 26.47 2.680E+06
5. 1.172 95.08 1005.42 89.88 116.00 31.51 3.961E+06
6. 1.175 101.09 1021.54 107.12 128.57 29.78 4.969E+06
7. 1.209 94.21 1012.52 98.60 122.29 28.23 5.029E+06
8. 1.268 84.92 985.79 68.88 97.14 31.81 2.984E+06
9. 1.277 104.26 1044.27 129.92 134.86 28.04 6.503E+06
10. 1.281 98.48 1029.93 114.43 122.29 28.38 5.522E+06
* * * END OF FILE * * *
SECC 11-19-05 13:20
Section C—C': South side near house
945 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .030
�vr
925 N,4„
i 905
N
v-
tn
X
Q 885
>-
865
845
0 20 40 60 80 100 120 140 160
X-AXIS (feet)
C:9CSTABL\HIR W IN\SectionC.wpd
PROFIL FILE: SECC 11-19-05 13:19 ft
Section C-C': South side near house
7 4
.0 942.0 70.0 942.0 1
70.0 942.0 72.0 938.0 1
72.0 938.0 83.0 916.0 2
83.0 916.0 160.0 916.0 3
.0 938.0 72.0 938.0 2
.0 916.0 83.0 916.0 3
.0 912.0 160.0 912.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 1
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 1
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
7
.0 937.0
40.0 937.0
50.0 934.0
61.0 929.0
71.0 924.0
78.0 919.0
83.0 916.0
LOADS
1
.0 20.0 1500.0 .0
CIRCL2
15 15
83.0 150.0 10.0 22.0
850.0 8.0 .0 .0
XSTABL File: SECC 11-19-05 13:20
******************************************
* XSTABL
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright (C) 1992 - 2002 *
* Interactive SoftwareDesigns, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description : Section C-C': South side near house
SEGMENT BOUNDARY COORDINATES
4 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 942.0 70.0 942.0 1
2 70.0 942.0 72.0 938.0 1
3 72.0 938.0 83.0 916.0 2
4 83.0 916.0 160.0 916.0 3
3 SUBSURFACE boundary segments
Segment x-left y-lefl x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 938.0 72.0 938.0 2
2 .0 916.0 83.0 916.0 3
3 .0 912.0 160.0 912.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 1
1 Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. I specified by 7 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 .00 937.00
2 40.00 937.00
3 50.00 934.00
4 61.00 929.00
5 71.00 924.00
6 78.00 919.00
7 83.00 916.00
BOUNDARY LOADS
1 load(s) specified
Load x-lefl x-nght Intensity Direction
No. (ft) (ft) (psf) (deg)
1 .0 20.0 1500.0 .0
NOTE -Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced
along the ground surface between x = 83.0 ft
and x = 150.0 ft
Each surface terminates between x = 10.0 ft
and x= 22.0 ft
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 850.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by
Lower angular limit :_ -45.0 degrees
Upper angular limit :_ (slope angle - 5.0) degrees
Factors of safety have been calculated by the
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 14 coordinate points
Point x-surf y-surf
No. (ft) (f1)
1 102.14 916.00
2 94.41 913.96
3 86.51 912.68
4 78.53 912.19
5 70.53 912.48
6 62.60 913.56
7 54.82 915.41
8 47.26 918.01
9 39.99 921.35
10 33.08 925.38
11 26.60 930.07
12 20.61 935.38
13 15.17 941.25
14 14.60 942.00
**** Simplified BISHOP FOS = 1.030 ****
The following is a summary of the TEN most critical surfaces
Problem Description : Section C-C- South side near house
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.030 77.51 993.56 81.38 102.14 14.60 4.508E+06
2. 1.048 76.02 999.32 87.32 102.14 10.26 5.401E+06
3. 1.110 79.30 1002.48 89.44 102.14 13.46 5.251E+06
4. 1.114 65.68 977.17 65.04 87.79 11.00 3.874E+06
5. 1.131 71.63 992.89 79.69 92.57 10.43 4.917E+06
6. 1.134 79.28 1006.57 93.41 102.14 11.87 5.743E+06
7. 1.137 84.47 1020.50 108.00 111.71 10.40 7.003E+06
8. 1.145 72.09 994.68 81.30 92.57 10.29 5.057E+06
9. 1.172 80.77 1007.46 93.92 102.14 13.45 5.659E+06
10. 1.174 70.91 981.37 67.51 87.79 16.13 3.627E+06
* * * END OF FILE * * *
SECD II-19-05 13:28
Section D—D': Center of site w/house
950 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .056
Ate\
925 Nre
d 900
v- .
N
X
Q 875
>-
850
825
0 25 50 75 100 125 150 175 200
X—AXIS (feet)
C:UtSTABLU-IIR W INKS ectionD.wpd
PROFIL FILE: SECD 11-19-05 13:28 ft
Section D-D': Center of site w/house
7 4
.0 942.0 65.0 942.0 1
65.0 942.0 67.0 938.0 1
67.0 938.0 78.0 916.0 2
78.0 916.0 180.0 916.0 3
.0 938.0 67.0 938.0 2
.0 916.0 78.0 916.0 3
.0 912.0 180.0 912.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 1
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 1
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
6
.0 937.0
35.0 937.0
50.0 932.0
60.0 927.0
70.0 922.0
78.0 916.0
LOADS
1
.0 10.0 1500.0 .0
CIRCL2
15 15
78.0 140.0 10.0 15.0
870.0 8.0 .0 .0
XSTABL File: SECD 11-19-05 13:28
******************************************
* XSTABL
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright(C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description : Section D-D': Center of site w/house
SEGMENT BOUNDARY COORDINATES
4 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 942.0 65.0 942.0 1
2 65.0 .942.0 67.0 938.0 1
3 67.0 938.0 78.0 916.0 2
4 78.0 916.0 180.0 916.0 3
3 SUBSTIRFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 938.0 67.0 938.0 2
2 .0 916.0 78.0 916.0 3
3 .0 912.0 180.0 912.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 1
1 Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 6 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 .00 937.00
2 35.00 937.00
3 50.00 932.00
4 60.00 927.00
5 70.00 922.00
6 78.00 916.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psi) (deg)
1 .0 10.0 1500.0 .0
NOTE - Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced
along the ground surface between x = 78.0 ft.
and x = 140.0 ft
Each surface terminates between x = 10.0 ft
and x = 15.0 ft
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 870.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by :
Lower angular limit :_ -45.0 degrees
Upper angular limit :_ (slope angle - 5.0) degrees
Factors of safety have been calculated by the
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 13 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 95.71 916.00
2 87.98 913.96
3 80.07 912.73
4 72.08 912.33
5 64.10 912.77
6 56.20 914.04
7 48.47 916.13
8 41.01 919.01
9 33.89 922.65
10 27.18 927.01
11 20.97 932.05
12 15.32 937.71
13 11.85 942.00
**** Simplified BISHOP FOS = 1.056 ****
The following is a summary of the TEN most critical surfaces
Problem Description : Section D-D': Center of site w/house
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.056 72.29 988.97 76.64 95.71 11.85 3.797E+06
2. 1.059 71.37 989.73 77.65 95.71 10.17 3.923E+06
3. 1.072 71.73 991.22 78.95 95.71 10.05 4.004E+06
4. 1.121 81.38 1010.90 98.84 109.00 10.63 5.300E+06
5. 1.147 74.22 996.29 83.11 95.71 11.40 4.303E+06
6. 1.147 76.65 1003.59 90.69 100.14 10.18 4.800E+06
7. 1.172 74.48 998.70 85.39 95.71 10.75 4.489E+06
8. 1.196 68.14 987.26 73.67 86.86 10.12 3.797E+06
9. 1.204 75.60 1000.77 87.12 95.71 11.41 4.609E+06
10. 1.205 65.27 970.56 58.68 86.86 14.17 3.147E+06
* * * END OF FILE * * *
SECE 11-19-05 13:40
Section E—E': Southeast corner,utili
gas 10 most critical surfaces, MINIMUM BISHOP fOS = 1 .009
925 N�
Nye
NN
d 905
G7
v—
v
N_
X
Q 885
>-
865
845
0 20 40 60 80 100 120 140 160
X—AXIS (feet)
C:V C STAB L\HIR W INKS ec ti on E.w pd
PROFIL FILE: SECE 11-19-05 13:40 ft
Section E-E': Southeast corner,utili
7 4
.0 944.0 65.0 944.0 1
65.0 944.0 67.0 940.0 1
67.0 940.0 79.0 916.0 1
79.0 916.0 160.0 916.0 3
.0 940.0 67.0 940.0 2
.0 916.0 79.0 916.0 3
.0 912.0 160.0 912.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 1
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 1
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
5
.0 939.0
30.0 939.0
57.0 930.0
68.0 923.0
79.0 916.0
LOADS
1
10.0 12.0 1500.0 .0
CIRCL2
15 15
79.0 150.0 10.0 13.0
870.0 8.0 .0 .0
XSTABL File: SECE 11-19-05 13:40
******************************************
* XSTABL
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright(C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843,U.S.A. *
* *
* All Rights Reserved *
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description Section E-E': Southeast corner,utili
SEGMENT BOUNDARY COORDINATES
4 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 944.0 65.0 944.0 1
2 65.0 944.0 67.0 940.0 1
3 67.0 940.0 79.0 916.0 1
4 79.0 916.0 160.0 916.0 3
3 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 940.0 67.0 940.0 2
2 .0 916.0 79.0 916.0 3
3 .0 912.0 160.0 912.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 1
1 Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 5 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (II)
1 .00 939.00
2 30.00 939.00
3 57.00 930.00
4 68.00 923.00
5 79.00 916.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psf) (deg)
1 10.0 12.0 1500.0 .0
NOTE- Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced —
along the ground surface between x = 79.0 ft
and x = 150.0 ft
Each surface terminates between x = 10.0 ft
and x = 13.0ft
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 870.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by :
Lower angular limit :_ -45.0 degrees
Upper angular limit :_ (slope angle - 5.0) degrees
Factors of safety have been calculated by the :
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 14 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 99.29 916.00
2 91.57 913.89
3 83.68 912.55
4 75.70 912.00
5 67.70 912.26
6 59.77 913.30
7 51.99 915.13
8 44.42 917.72
9 37.15 921.06
10 30.24 925.10
11 23.77 929.80
12 17.80 935.13
13 12.39 941.03
14 10.17 944.00
**** Simplified BISHOP FOS = 1.009 ****
The following is a summary of the TEN most critical surfaces
Problem Description : Section E-E': Southeast corner,utili
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.009 74.22 992.34 80.35 99.29 10.17 4.589E+06
2. 1.022 74.63 993.78 81.60 99.29 10.09 4.687E+06
3. 1.023 74.94 992.45 80.23 99.29 11 ,10 4.493E+06
4. 1.110 77.04 999.71 86.62 99.29 10.81 5.073E+06
5. 1 113 80.08 1007.12 94.30 104.36 10.05 5.681E+06
6. 1.125 70.20 988.37 74.81 89.14 10.04 4.352E+06
7. 1 129 77.42 1001.77 88.52 99.29 10.44 5.276E+06
8. 1.170 67.29 980.89 67.02 84.07 11.47 3.751E+06
9. 1.173 78.50 1004.31 90.72 99.29 10.80 5.459E+06
10. 1,173 67.48 980.34 66.44 84.07 11.98 3.670E+06
* * * END OF FILE
SECF 11-19-05 13:54
Section F—Ft: Northwest corner, util
950 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .052
925 y✓
w 900
a,
V-
tn
X
Q 875
>-
850
825
0 25 50 75 100 125 150 175 200
X-AXIS (feet)
C:\XSTABIA IIRW[N\SectionF.wpd
PROFIL FILE: SECF 11-19-05 13:54 ft
Section F-F': Northwest corner, util
7 4
.0 918.0 105.0 918.0 3
105.0 918.0 115.0 939.0 2
115.0 939.0 117.0 943.0 1
117.0 943.0 200.0 943.0 1
115.0 939.0 200.0 939.0 2
105.0 918.0 200.0 918.0 3
.0 914.0 200.0 914.0 4
SOIL
4
114.0 126.0 200.0 28.00 .000 .0 1
129.0 130.0 .0 34.00 .000 .0 1
124.0 134.0 .0 15.00 .000 .0 1
124.0 134.0 1000.0 28.00 .000 .0 1
WATER
1 62.40
7
105.0 918.0
115.0 923.0
125.0 928.0 _
135.0 933.0
150.0 936.5
160.0 938.0
200.0 938.0
LOADS
1
163.0 165.0 1500.0 .0
CIRCL2
15 15
50.0 105.0 162.0 165.0
870.0 8.0 .0 .0
XSTABL File: SECF 11-19-05 13:54
******************************************
* XSTABL *
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright (C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description • Section F-F': Northwest corner,util
SEGMENT BOUNDARY COORDINATES
4 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 918.0 105.0 918.0 3
2 105.0 918.0 115.0 939.0 2
3 115.0 939.0 117.0 943.0 1
4 117.0 943.0 200.0 943.0 1
3 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (I1) Below Segment
1 115.0 939.0 200.0 939.0 2
2 105.0 918.0 200.0 918.0 3
3 .0 914.0 200.0 914.0 4
ISOTROPIC Soil Parameters
4 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 34.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 1000.0 28.00 .000 .0 1
1 Water surface(s)have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 7 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 105.00 918.00
2 115.00 923.00
3 125.00 928.00
4 135.00 933.00
5 150.00 936.50
6 160.00 938.00
7 200.00 938.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psf) (deg)
1 163.0 165.0 1500.0 .0
NOTE - Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A critical failure surface searching method, using a random
technique for generating CIRCULAR surfaces has been specified.
225 trial surfaces will be generated and analyzed.
15 Surfaces initiate from each of 15 points equally spaced
along the ground surface between x = 50.0 ft
and x = 105.0 ft
Each surface terminates between x = 162.0 ft
and x = 165.0 fl
Unless further limitations were imposed, the minimum elevation
at which a surface extends is y= 870.0 ft
8.0 ft line segments define each trial failure surface.
ANGULAR RESTRICTIONS
The first segment of each failure surface will be inclined
within the angular range defined by :
Lower angular limit :_ -45.0 degrees
Upper angular limit :_ (slope angle - 5.0) degrees
Factors of safety have been calculated by the
* * * * * SIMPLIFIED BISHOP METHOD * * * * *
The most critical circular failure surface
is specified by 13 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 81.43 918.00
2 89.12 915.81
3 97.01 914.48
4 105.00 914.02
5 112.99 914.45
6 120.88 915.76
7 128.58 917.93
8 135.99 920.93
9 143.03 924.74
10 149.61 929.30
11 155.64 934.55
12 161.05 940.44
13 162.94 943.00
**** Simplified BISHOP FOS = 1.052 ****
The following is a summary of the TEN most critical surfaces
Problem Description : Section F-F• Northwest corner, util
FOS Circle Center Radius Initial Terminal Resisting
(BISHOP) x-coord y-coord x-coord x-coord Moment
(ft) (ft) (ft) (ft) (ft) (ft-lb)
1. 1.052 105.11 986.47 72.45 81.43 162.94 3.324E+06
2. 1.056 110.58 980.60 66.13 89.29 164.85 3.127E+06
3 1.068 110.25 981.77 67.13 89.29 164.92 3.194E+06
4. 1.072 116.52 965.60 51.39 97.14 162.52 2.197E+06
5. 1.073 109.94 980.48 65.81 89.29 163.88 3.041E+06
6. 1.112 111.51 976.53 62.61 89.29 164.25 3.131E+06
7. 1.132 101.58 998.64 84.16 77.50 164.71 4.230E+06
8. 1.147 119.74 964.75 5034 101.07 164.96 2.330E+06
9. 1.149 105.85 992.04 76.83 85.36 164.98 3.831E+06
10. 1 155 108.19 986.31 70.87 89.29 164.15 3.427E+06
* * * END OF FILE * * *
BASEDD 7-23-05 9:17
a-G'
Baseline: Sec. 11
5000 SPENCER'S METHOD, FOS for Specified Surface = 1 .987
4950 I El
w1
4900
4)
-
fn
X
Q 4850
>-
4800
4750
' I
I I I I I I
0 50 100 150 200 250 300 350 400
X—AXIS (feet)
5010 THRUST LINE LOCATION 30 INTERSLICE FORCES
a 0.
u. 20 -
in 4960 0 10 - /
ce
b O
o 4
u 0
r 3
4910 in-10
100 ISO 200 250 500 100 ISO 200 250 300
ver
_ 4000 lleal normal pore wafer l9 SPENCER'S METHOD,
Y. m 19 _ Constant Angle,Theta=11.38 deg.
3000 - \,•
\ V I{
z000 _ \\ 12 _
E
s \ i 10 _
GIo00 - \\ < 9 -
0 8 -
40 0 • ... -y. i
100 150 200 250 300 100 150 200 250 300
X-COORDS (reel) X-COORDS (fee°
Baseline: Sec. D-0'
SPENCER'S METHOD, FOS far Specified Surface = 1.987
C:\XSTABL\basedd.wpd
XSTABL File: BASEDD 7-23-05 9:17
******************************************
* XSTABL
* *
* Slope Stability Analysis *
* using the *
* Method of Slices
* *
* Copyright (C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Ver. 5.206 96 - 1952 *
******************************************
Problem Description : Baseline: Sec. DWG, &'
SEGMENT BOUNDARY COORDINATES
6 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 .0 4916.0 110.0 4916.0 3
2 110.0 4916.0 200.0 4946.0 2
3 200.0 4946.0 209.0 4949.0 1
4 209.0 4949.0 221.0 4949.0 1
5 221.0 4949.0 225.0 4949.0 5
6 225.0 4949.0 375.0 4949.0 1
13 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 197.0 4946.0 220.9 4946.0 2
2 220.9 4946.0 221.0 4949.0 5
3 110.0 4916.0 220.8 4916.0 3
4 220.8 4916.0 220.9 4946.0 5
5 .0 4912.0 220.7 4912.0 4
6 220.7 4912.0 220.8 4916.0 5
7 225.0 4949.0 225.1 4946.0 5
8 225.1 4946.0 375.0 4946.0 2
9 225.1 4946.0 225.2 4916.0 5
10 225.2 4916.0 375.0 4916.0 3
11 225.2 4916.0 225.3 4912.0 5
12 225.3 4912.0 375.0 4912.0 4
13 220.7 4912.0 225.3 4912.0 4
ISOTROPIC Soil Parameters
5 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 35.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 I
4 124.0 134.0 100.0 28.00 .000 .0 1
5 110.0 122.0 .0 26.00 .000 .0 1
1 Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 5 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 110.00 4916.00
2 218.00 4919.00
3 220.90 4944.00
4 225.10 4946.00
5 375.00 4946.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psf) (deg)
1 340.0 360.0 500.0 .0
NOTE - Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A SINGLE FAILURE SURFACE HAS BEEN SPECIFIED FOR ANALYSIS
Trial failure surface is CIRCULAR, with a radius of 183.94 feet
Center at x = 159.81 ; y= 5096.07 ; Seg. Length= 8.00 feet
The CIRCULAR failure surface was estimated by
the following 22 coordinate points
Point x-surf y-surf
No. (ft) (ft)
1 115.00 4917.67
2 122.80 4915.89
3 130.67 4914.45
4 138.59 4913.35
5 146.56 4912.60
6 154,55 4912.20
7 162.55 4912.15
8 170.54 4912.44
9 178.52 4913.08
10 186.45 4914.06
11 194.34 4915.40
12 202.17 4917.07
13 209.91 4919.08
14 217.56 4921.42
15 225.10 4924.10
16 232.51 4927.10
17 239.79 4930.42
18 246.92 4934.06
19 253.88 4938.00
20 260.66 4942.24
21 267.26 4946.77
22 270.22 4949.00
***************************************************
SELECTED METHOD OF ANALYSIS: Spencer(1973)
***************************************************
****************************************
SUMMARY OF INDIVIDUAL SLICE INFORMATION
****************************************
Slice x-base y-base height width alpha beta weight
(ft) (ft) (ft) (ft) (lb)
1 117.98 4916.99 1.68 5.97 -12.85 18.43 1291.
2 121.64 4916.15 3.73 1.34 -12.85 18.43 642.
3 122.55 4915.94 4.24 .49 -12.85 18.43 271.
4 126.73 4915.17 6.41 7.87 -10.36 18.43 6543.
5 134.63 4913.90 10.31 7.92 -7.87 18.43 10628.
6 142.57 4912.98 13.88 7.96 -5.38 18.43 14389.
7 150.55 4912.40 17.12 7.99 -2.89 18.43 17794.
8 158.55 4912.17 20.01 8.00 -.39 18.43 20813.
9 166.54 4912.29 22.56 7.99 2.10 18.43 23423.
10 174.53 4912.76 24.75 7.97 4.59 18.43 25605.
11 182.49 4913.57 26.59 7.94 7.08 18.43 27344.
12 190.40 4914.73 28.07 7.89 9.57 18.43 28632.
13 195.67 4915.68 28.88 2.66 12.07 18.43 9907.
14 197.09 4915.98 29.05 .17 12.07 18.43 638.
15 198.59 4916.30 29.23 2.83 12.07 18.43 10675.
16 201.08 4916.84 29.52 2.17 12.07 18.43 8243.
17 205.38 4917.90 29.89 6.43 14.56 18.43 24636.
18 208.80 4918.79 30.14 .40 14.56 18.43 1540.
19 209.45 4918.96 30.04 .91 14.56 .00 3484.
20 213.73 4920.25 28.75 7.65 17.05 .00 28020.
21 217.94 4921.56 27.44 .75 19.54 .00 2637.
22 219.57 4922.14 26.86 2.51 19.54 .00 8609.
23 220.86 4922.60 26.40 .08 19.54 .00 257.
24 220.95 4922.63 26.37 .10 19.54 .00 316.
25 223.00 4923.36 25.64 4.00 19.54 .00 12322.
26 225.05 4924.08 24.92 .10 19.54 .00 301.
27 225.14 4924.12 24.88 .07 22.04 .00 226.
28 228.84 4925.62 23.38 7.34 22.04 .00 21959.
29 236.15 4928.76 20.24 7.28 24.53 .00 18798.
30 243.35 4932.24 16.76 7.13 27.02 .00 15186.
31 250.40 4936.03 12.97 6.96 29.51 .00 11406.
32 257.27 4940.12 8.88 6.78 32.00 .00 7508.
33 263.40 4944.12 4.88 5.47 34.50 .00 3211.
34 266.70 4946.38 2.62 1.12 34.50 .00 334.
35 268.74 4947.88 1.12 2.96 36.99 .00 377.
ITERATIONS FOR SPENCER'S METHOD
Iter# Theta FOS_force FOS_moment
2 11.3826 1.9867 1.9868
SLICE INFORMATION ... continued
Slice Sigma c-value phi U-base U-top P-top Delta
(psf) (psf) (lb) (lb) (lb)
1 269.4 .0 35.00 0. 0. 0. .00
2 586.4 .0 35.00 15. 0. 0. .00
3 584.2 .0 15.00 13. 0. 0. .00
4 826.9 .0 15.00 647. 0. 0. .00
5 1265.5 .0 15.00 1389. 0. 0. .00
6 1664.3 .0 15.00 1959. 0. 0. .00
7 2024.8 .0 15.00 2357. 0. 0. .00
8 2348.6 .0 15.00 2582. 0. 0. .00
9 2637.4 .0 15.00 2633. 0. 0. .00
10 2892.4 .0 15.00 2511. 0. 0. .00
11 3114.8 .0 15.00 2216. 0. 0. .00
12 3306.0 .0 15.00 1747. 0. 0. .00
13 3401.4 .0 15.00 457. 0. 0. .00
14 3437.2 .0 15.00 26. 0. 0. .00
15 3467.3 .0 35.00 389. 0. 0. .00
16 3527.4 .0 35.00 234. 0. 0. .00
17 3524.1 .0 35.00 309. 0. 0. .00
18 3583.3 .0 35.00 0. 0. 0. .00
19 3570.0 .0 35.00 0. 0. 0. .00
20 3333.8 .0 35.00 0. 0. 0. .00
21 3104.9 .0 35.00 0. 0. 0. .00
22 3039.5 .0 35.00 23. 0. 0. .00
23 2947.9 .0 26.00 1. 0. 0. .00
24 1800.9 .0 26.00 115. 0. 0. .00
25 1713.8 .0 26.00 4673. 0. 0. .00
26 1637.5 .0 26.00 118. 0. 0. .00
27 1434.0 .0 26.00 107. 0. 0. .00
28 1401.5 .0 35.00 10071. 0. 0. .00
29 1191.9 .0 35.00 8605. 0. 0. .00
30 977.4 .0 35.00 6869. 0. 0. .00
31 760.7 .0 35.00 4978. 0. 0. .00
32 543.8 .0 35.00 2936. 0. 0. .00
33 345.8 .0 35.00 780. 0. 0. .00
34 196.5 200.0 28.00 0. 0. 0. .00
35 55.1 200.0 28.00 0. 0. 0. .00
SPENCER'S (1973) -TOTAL Stresses at center of slice base
Slice Base Normal Vertical Pore Water Shear
# x-coord Stress Stress Pressure Stress
(ii) (Psi) (Ps) (Psi) (Psi)
1 117.98 269.4 216.2 .0 94.9
2 121.64 597.1 480.9 10.7 206.7
3 122.55 609.5 547.6 25.3 78.8
4 126.73 907.7 831.5 80.9 111.5
5 134.63 1439.1 1341A 173.6 170.7
6 142.57 1909.1 1806.6 244.8 224.5
7 150.55 2319.4 2227.1 294.6 273.1
8 158.55 2671.3 26017 322.7 316.8
9 166.54 2966.5 2929.9 329.1 355.7
10 174.53 3206.3 3210.9 313.9 390.1
11 182.49 3391.8 3444.2 277.0 420.1
12 190.40 3524.4 3629.5 218.4 445.9
13 195.67 3569.8 3729.2 168.4 458.7
14 197.09 3589.2 3749.5 152.0 463.6
15 198.59 3601.9 3772.3 134.6 1222.0
16 201.08 3633.0 3804.9 105.6 1243.2
17 205.38 3570.6 3829.7 46.5 1242.0
18 208.80 3583.3 3844.3 .0 1262.9
19 209.45 3570.0 3830.0 .0 1258.2
20 213.73 3333.8 3663.5 .0 1175.0
21 217.94 3104.9 3494.9 .0 1094.3
22 219.57 3048.1 3430.5 8.6 1071.3
23 220.86 2965.4 3288.5 17.5 723.7
24 220.95 2889.1 3163.6 1088.3 442.1
25 223.00 2814.7 3080.5 1100.9 420.7
26 225.05 2751.0 3009.4 1113.5 402.0
27 22514 2799.4 3099.2 1365.5 352.0
28 228.84 2673.4 2991.8 1271.9 494.0
29 236.15 2267.5 2582.8 1075.6 420.1
30 243.35 1836.0 2130.8 858.6 344.5
31 250.40 1382.9 1638.3 622.2 268.1
32 257.27 910.8 1106.6 367.0 191.7
33 263.40 463.2 586.5 117.4 121.9
34 266.70 196.5 298.1 .0 153.3
35 268.74 55.1 127.1 .0 115.4
SPENCER'S (1973) - Magnitude&Location of Interslice Forces
Slice Right Force Interslice Force Boundary Height
# x-coord Angle Force Height Height Ratio
(ft) (degrees) (lb) (ft) (ft)
1 120.97 11.38 952. 1.28 3.35 .382
2 122.30 11.38 1419. 1.34 4.10 .326
3 122.80 11.38 1529. 1.45 4.38 .331
4 130.67 11.38 3757. 2.72 8.44 .322
5 138.59 11.38 6744. 3.61 12.18 .296
6 146.56 11.38 10029. 4.39 15.58 .282
7 154.55 11.38 13207. 5.11 18.65 .274
8 162.55 11.38 15941 . 5.75 21.37 .269 .�
9 170.54 11.38 17955. 6.35 23.74 .267
10 178.52 11.38 19035. 6.93 25.76 .269
11 186.45 11.38 19024. 7.54 27.42 .275
12 194.34 11.38 17829. 8.32 28.72 .290
13 197.00 11.38 17003. 8.69 29.04 .299
14 197.17 11.38 16951 8.71 29.06 .300
15 200.00 11.38 18255. 8.05 29.39 .274
16 202.17 11.38 19286. 7.60 29.65 .256
17 208.60 11.38 21351. 6.51 30.13 .216
18 209.00 11.38 21487. 6.44 30.16 .214
19 209.91 11.38 21795. 6.30 29.92 .210
20 217.56 11.38 22984. 519 27.58 .188
21 218.31 11.38 22978. 5.07 27.31 .186
22 220.82 11.38 22951. 4.69 26.42 .178
23 220.90 11.38 22925. 4.69 26.39 .178
24 221.00 11.38 22865. 4.68 26.35 .178
25 225.00 11.38 20505. 4.57 24.93 .183
26 225.10 11.38 20446. 4.57 24.90 .184
27 225.17 11.38 20388. 4.57 24.87 184
28 232.51 11.38 15985. 4.13 21.90 .188
29 239.79 11.38 11423. 3.55 18.58 .191
30 246.92 11.38 7121. 2.83 14.94 .189
31 253.88 11.38 3465. 1.93 11.00 .176
32 260.66 11.38 852. .59 6.76 .087
33 266.14 11.38 -244. 1.27 3.00 .423
34 267.26 11.38 -224. .82 2.23 .366
35 270.22 .00 0. -2.50 .00 .000
AVERAGE VALUES ALONG FAILURE SURFACE
Total Normal Stress = 2588.56 (psf)
Pore Water Pressure= 358.94 (psf)
Shear Stress = 528.58 (psf)
Total Length of failure surface= 163.71 feet
For the single specified surface and the assumed angle
of the interslice forces, the SPENCER'S (1973)
procedure gives a
FACTOR OF SAFETY= 1.987
Total shear strength available
along specified failure surface= 139.85E+03 lb
*****************************************************************
For the specified surface, the analysis computed the following:
Negative (tensile) Normal Effective Force= 0 slices
Negative (tensile) Interslice Force = 2 slices
Unreasonable Location of Interslice Force = 0 slices
In view of these errors, the computed FOS may be UNREASONABLE!
*****************************************************************
r
BASEEE 7-23-05 9:29
A- Ell
Baseline: Sec. ligEl
5000 _ SPENCER'S METHOD, FOS for Specified Surface = 2.233
R �/
4950 _ I /\
i 4900 _
a9
4-
VI '
X-
< 4850 _
>-
4800 _
4750
• I I I I I ' I I I
0 50 100 150 200 250 300 350 400
X—AXIS (feet)
THRUST LINE LOCATION INTERSLICE FORCES
60 i
,_, 5000 n 50 .,
e 40 _
.2
M 30 .
C,
G 4950 0 30 .
a: "' TO
O
0
U U 0
99
y 4900 -10 . , , • ,-4
50 100 150 200 250 300 50 100 150 200 250 300
s090 vertical normal pore water 16 SPENCER'S METHOD,
m. �_\ a, Constant Angle,Theta= 10.17 deg.
e&. 4000 191 V 14 .
a1 3000 4\ N 12 _
n \ 10 _
a
G 2000
4 6 _
01 1000 r ......... mu 6 _
m
0 ,' L. 4 , ,
50 100 150 200 250 300 50 100 150 200 250 300
X-COORDS (feet) X-COORDS (feel)
Baseline: Sec. E—E'
SPENCER'S METHOD, FOS (or Specified Surface = 2.233
C:\XSTABL\baseee.wpd
XSTABL File: BASEEE 7-23-05 9:29
******************************************
* XSTABL
* *
* Slope Stability Analysis *
* using the
* Method of Slices
* *
* Copyright (C) 1992 - 2002 *
* Interactive Software Designs, Inc. *
* Moscow, ID 83843, U.S.A. *
* *
* All Rights Reserved
* *
* Vet 5.206 96 - 1952 *
******************************************
k1-klf
Problem Description . Baseline: Sec. IS=
SEGMENT BOUNDARY COORDINATES
7 SURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (II) Below Segment
1 .0 4916.0 100.0 4916.0 3
2 100.0 4916.0 187.0 4945.0 2
3 187.0 4945.0 199.0 4949.0 1
4 199.0 4949.0 211.0 4949.0 1
5 211.0 4949.0 215.0 4949.0 5
6 215.0 4949.0 285.0 4949.0 1 •
7 285.0 4949.0 350.0 4949.0 1
13 SUBSURFACE boundary segments
Segment x-left y-left x-right y-right Soil Unit
No. (ft) (ft) (ft) (ft) Below Segment
1 187.0 4945.0 210.9 4945.0 2
2 210.9 4945.0 211.0 4949.0 5
3 100.0 4916.0 210.8 4916.0 3
4 210.8 4916.0 210.9 4945.0 5
5 .0 4912.0 210.7 4912.0 4
6 210.7 4912.0 210.8 4916.0 5
7 215.0 4949.0 215.1 4945.0 5
8 215.1 4945.0 350.0 4945.0 2
9 215.1 4945.0 215.2 4916.0 5
10 215.2 4916.0 350.0 4916.0 3
11 215.2 4916.0 215.3 4912.0 5
12 215.3 4912.0 350.0 4912.0 4
13 210.7 4912.0 215.3 4912.0 4
ISOTROPIC Soil Parameters
5 Soil unit(s) specified
Soil Unit Weight Cohesion Friction Pore Pressure Water
Unit Moist Sat. Intercept Angle Parameter Constant Surface
No. (pcf) (pcf) (psf) (deg) Ru (psf) No.
1 114.0 126.0 200.0 28.00 .000 .0 1
2 129.0 130.0 .0 35.00 .000 .0 1
3 124.0 134.0 .0 15.00 .000 .0 1
4 124.0 134.0 100.0 28.00 .000 .0 1
5 110.0 122.0 .0 26.00 .000 .0 1
1 Water surface(s) have been specified
Unit weight of water= 62.40 (pcf)
Water Surface No. 1 specified by 5 coordinate points
**********************************
PHREATIC SURFACE,
**********************************
Point x-water y-water
No. (ft) (ft)
1 100.00 4916.00
2 208.00 4919.00
3 209.00 4943.00
4 216.00 4945.00
5 350.00 4945.00
BOUNDARY LOADS
1 load(s) specified
Load x-left x-right Intensity Direction
No. (ft) (ft) (psf) (deg)
1 285.0 325.0 250.0 .0
r
NOTE - Intensity is specified as a uniformly distributed
force acting on a HORIZONTALLY projected surface.
A SINGLE FAILURE SURFACE HAS BEEN SPECIFIED FOR ANALYSIS
Trial failure surface is CIRCULAR, with a radius of 194.84 feet
Center at x = 138.42 ; y= 5098.43 ; Seg. Length= 8.00 feet
The CIRCULAR failure surface was estimated by
the following 27 coordinate points :
Point x-surf y-surf
No. (ft) (ft)
1 70.00 4916.00
2 77.55 4913.35
3 85.19 4911.00
4 92.93 4908.98
5 100.75 4907.27
6 108.63 4905.88
7 116.56 4904.82
8 124.52 4904.09
9 132.51 4903.68
10 140.51 4903.60
11 148.51 4903.85
12 156.49 4904.43
13 164.44 4905.34
14 172.34 4906.57
15 180.19 4908.12
16 187.97 4910.00
17 195.66 4912.19
18 203.26 4914.70
19 210.74 4917.51
20 218.11 4920.63
21 225.34 4924.06
22 232.43 4927.77
23 239.35 4931.77
24 246.11 4936.06
25 252.68 4940.62
26 259.07 4945.44
27 263.40 4949.00
***************************************************
SELECTED METHOD OF ANALYSIS: Spencer(1973)
***************************************************
****************************************
SUMMARY OF INDIVIDUAL SLICE INFORMATION
****************************************
Slice x-base y-base height width alpha beta weight
(ft) (f1) (ft) (11) (lb)
1 73.77 4914.67 1.33 7.55 -19.38 .00 1242.
2 79.74 4912.67 3.33 4.39 -17.03 .00 1812.
3 83.57 4911.50 4.50 3.26 -17.03 .00 1816.
4 89.06 4909.99 6.01 7.74 -14.68 .00 5769.
5 96.47 4908.20 7.80 7.07 -12.32 .00 6832.
6 100.37 4907.35 8.77 75 -12.32 18.43 880.
7 104.69 4906.58 10.99 7.88 -9.97 18.43 11540.
8 112.59 4905.35 14.85 7.93 -7.62 18.43 15610.
9 120.54 4904.46 18.39 7.97 -5.27 18.43 19364.
10 128.52 4903.88 21.62 7.99 -2.91 18.43 22775.
11 136.51 4903.64 24.53 8.00 -.56 18.43 25815
12 144.51 .4903 73 27.11 8.00 1.79 18.43 28463.
13 152.50 4904.14 29.36 7.98 4.14 18.43 30702.
14 160.46 4904.88 31.27 7.95 6.50 18.43 32519.
15 168.39 4905.95 32.84 7.90 8.85 18.43 33904.
16 176.27 4907.34 34.08 7.85 11.20 18.43 34854.
17 183.59 4908.94 34.92 6.81 13.55 18.43 30939.
18 187.48 4909.88 35.28 .97 13.55 18.43 4427.
19 191.48 4911.00 35.50 7.03 15.91 18.43 32221.
20 195.33 4912.09 35.68 .66 15.91 18.43 3047.
21 197.33 4912.74 35.70 3.34 18.26 18.43 15275.
22 201.13 4913.99 35.01 4.26 18.26 .00 19023.
23 204.99 4915.35 33.65 3.47 20.62 .00 14863.
24 207.36 4916.24 32.76 1.28 20.62 .00 5320.
25 208.50 4916.67 32.33 1.00 20.62 .00 4125.
26 209.87 4917.18 31.82 1.74 20.62 .00 7102.
27 210.78 4917.53 31.47 .06 22.97 .00 244.
28 210.85 4917.56 31.44 .09 22.97 .00 370.
29 210.95 4917.60 31.40 10 22.97 .00 377.
30 213.00 4918.47 30.53 4.00 22.97 .00 14666.
31 215.05 4919.34 29.66 .10 22.97 .00 358.
32 215.14 4919.38 29.62 .09 22.97 .00 325.
33 215.59 4919.57 29.43 .81 22.97 .00 3054.
34 217.06 4920.19 28.81 2.11 22.97 .00 7771.
35 22173 4922.34 26.66 7.23 25.32 .00 24596.
36 228.88 4925.91 23.09 7.08 27.67 .00 20811.
37 235.89 4929.77 19.23 6.93 30.02 .00 16870.
38 242.73 4933.92 15.08 6.76 32.38 .00 12817.
39 249.40 4938.34 10.66 6.57 34.73 .00 8694.
40 255.59 4942.81 6.19 5.80 37.08 .00 4299.
41 258.78 4945.22 3.78 .58 37.08 .00 250.
42 261.23 4947.22 1.78 4.33 39.43 .00 879.
ITERATIONS FOR SPENCER'S METHOD
Iter# Theta FOS_force FOS_moment
2 10.1792 2.2335 2.2281
3 10.1652 2.2333 2.2335
SLICE INFORMATION ... continued :
Slice Sigma c-value phi U-base U-top P-top Delta
(ps0 (psl) (lb) (lb) (lb)
1 188.5 .0 15.00 0. 0. 0. .00
2 465.2 .0 15.00 0. 0. 0. .00
3 698.7 100.0 28.00 0. 0. 0. .00
4 902.3 100.0 28.00 0. 0. 0. .00
5 1136.7 100.0 28.00 0. 0. 0. .00
6 778.4 100.0 28.00 414. 0. 0. .00
7 1022.2 100.0 28.00 4766. 0. 0. .00
8 1456.9 100.0 28.00 5485. 0. 0. .00
9 1850.2 100.0 28.00 6044. 0. 0. .00
10 2204.4 100.0 28.00 6438. 0. 0. .00
11 2521.1 100.0 28.00 6670. 0. 0. .00
12 2802.3 100.0 28.00 6738. 0. 0. .00
13 3049.5 100.0 28.00 6642. 0. 0. .00
14 3264.1 100.0 28.00 6383. 0. 0. .00
15 3447.5 100.0 28.00 5960. 0. 0. .00
16 3600.9 100.0 28.00 5374. 0. 0, .00
17 3714.5 100.0 28.00 4098. 0. 0. .00
18 3802.6 100.0 28.00 530. 0. 0. .00
19 3795.5 100.0 28.00 3437. 0. 0. .00
20 3904.8 .0 15.00 282. 0. 0. .00
21 3879.6 .0 15.00 1308. 0. 0. .00
22 3853.1 .0 15.00 1346. 0. 0. .00
23 3711.7 .0 15.00 824. 0. 0. .00
24 3530.2 .0 35.00 233 0. 0. .00
25 3651,7 .0 35.00 2. 0. 0. .00
26 2183.1 .0 35.00 2803. 0. 0. .00
27 2093.8 .0 35.00 99. 0. 0. .00
28 2036.6 .0 26.00 154. 0. 0. .00
' 29 1914.5 .0 26.00 163. 0. 0. .00
30 1835.4 .0 26.00 6435. 0. 0. .00
31 1770.4 .0 26.00 159. 0. 0. .00
32 1867.3 .0 26.00 140. 0. 0. .00
33 1900.5 .0 35.00 1288. 0. 0. .00
34 1748.8 .0 35.00 3549. 0. 0. .00
35 1586.8 .0 35.00 11309. 0. 0. .00
36 1359.4 .0 35.00 9528. 0. 0. .00
37 1128.9 .0 35.00 7602. 0. 0. .00
38 896.9 .0 35.00 5534. 0. 0. .00
39 665.0 .0 35.00 3327. 0. 0. .00
40 444.9 .0 35.00 995. 0. 0. .00
41 298.0 200.0 28.00 0. 0. 0. .00
42 111.8 200.0 28.00 0. 0. 0. .00
SPENCER'S (1973) - TOTAL Stresses at center of slice base
Slice Base Normal Vertical Pore Water Shear
# x-coord Stress Stress Pressure Stress
(ft) (Psfl (Psi) (psi) (Psi)
1 73.77 188.5 164.6 .0 22.6
2 79.74 465.2 412.6 .0 55.8
3 83.57 698.7 - 557.8 .0 211.1
4 89.06 902.3 745.4 .0 259.6
5 96.47 1136.7 966.8 .0 315.4
6 100.37 1318.4 1175.2 540.0 230.1
7 104.69 1617.9 1464.6 595.8 288.1
8 112.59 2142.6 1968.6 685.7 391.6
9 120.54 2605.6 2430.8 755.4 485.3
10 128.52 3009.1 2850.6 804.8 569.6
11 136.51 3354.8 3227.0 833.8 645.0
12 144.51 3644.6 3559.6 842.3 711.9
13 152.50 3879.8 3847.9 830.3 770.8
14 160.46 4062.0 4091.2 797.8 821.9
15 168.39 4192.5 4289.1 745.0 865.5
16 176.27 4272.7 4441.3 671.8 902.1
17 183.59 4299.3 4542.6 584.9 929.1
18 187.48 4335.8 4581.9 533.1 950.1
19 191.48 4265.7 4584.0 470.3 948.4
20 195.33 4313.4 4583.4 408.6 468.5
21 197.33 4251.5 4573.1 371.8 465.5
22 201.13 4153.4 4468.7 300.3 462.3
23 204.99 3934.3 4287.3 222.5 445.3
24 207.36 3701.2 4168.8 171.0 1106.8
25 208.50 3653.3 4125.1 1.5 1144.9
26 209.87 3686.8 4070.3 1503.7 684.5
27 210.78 3592.7 4026.2 1498.9 656.5
28 210.85 3534.9 3912.2 1498.3 444.8
29 210.95 3412.0 3773.5 1497.5 418.1
30 213.00 3316.6 3666.6 1481.2 400.8
31 215.05 3235.2 3575.6 1464.8 386.6
32 215.14 3331.4 3684.2 1464.1 407.8
33 215.59 3361.0 3762.1 1460.5 595.8
34 217.06 3297.1 36817 1548.3 548.3
35 22173 3000.5 3401.2 1413.7 497.5
36 228.88 2550.4 2937.3 1191.0 426.2
37 235.89 2079.1 2435.6 950.2 353.9
38 242.73 1588.6 1897.0 6917 281.2
39 249.40 1080.8 1322.3 415.8 208.5
40 255.59 581.7 741.0 136.8 139.5
41 258.78 298.0 431.0 .0 160.5
42 261.23 111.8 203.0 .0 116.2
SPENCER'S (1973) - Magnitude&Location of Interslice Forces
Slice Right Force Interstice Force Boundary Height
# x-coord Angle Force Height Height Ratio
(ft) (degrees) (lb) (ft) (ft)
1 77.55 10.17 682. 2.00 2.65 .755
2 81.94 10.17 1567. 2.40 4.00 .601
3 85.19 10.17 2973. 2.47 5.00 .495
4 92.93 10.17 6872. 3.52 7.02 .501
5 100.00 10.17 10920. 4.50 8.57 .526
6 100.75 10.17 11314. 4.64 8.98 .516
7 108.63 10.17 15897. 5.70 12.99 .438
8 116.56 10.17 21361. 6.40 16.70 .384
9 124.52 10.17 27232. 6.95 20.09 .346
10 132.51 10.17 33099. 7.40 23.16 .319
11 140.51 10.17 38607. 7.75 25.90 .299
12 148.51 10.17 43465. 8.00 28.32 .282
13 156.49 10.17 47435. 8.15 30.40 .268
14 164.44 10.17 50336. 8.18 32.14 .255
15 172.34 10.17 52044. 8.10 33.55 .241
16 180.19 10.17 52489. 7.88 34.61 .228
17 187.00 10.17 51746. 7.57 35.24 .215
18 187.97 10.17 51653. 7.52 35.33 .213
19 195.00 10.17 49743. 7.06 35.66 .198
20 195.66 10.17 49229. 7.06 35.70 .198
21 199.00 10.17 46049. 7.03 35.71 .197
22 203.26 10.17 42122. 7.01 34.30 .204
23 206.72 10.17 38478. 6.96 33.00 .211
24 208.00 10.17 38107. 6.77 32.52 .208
25 209.00 10.17 37874. 6.62 32.14 .206
26 210.74 10.17 36629. 6.49 31.49 .206
27 210.81 10.17 36576. 6.49 31.46 .206
28 210.90 10.17 36474. 6.48 31.42 .206
29 211.00 10.17 36370. 6.48 31.38 .206
30 215.00 10.17 32287. 6.26 29.68 .211
31 215.10 10.17 32187. 6.25 29.64 .211
32 215.19 10.17 32097. 6.25 29.60 .211
33 216.00 10.17 31414. 6.18 29.26 .211
34 218.11 10.17 29593. 6.03 28.37 .213
35 225.34 10.17 22820. 5.38 24.94 .216
36 232.43 10.17 16261 4.62 21.23 .217
37 239.35 10.17 10297. 3.73 17.23 .216
38 246.11 10.17 5313. 2.71 12.94 .209
39 252.68 10.17 1701. 1.50 8.39 .179
40 258.49 10.17 -69. 2.60 4.00 .650
41 259.07 10.17 -107. 1.39 3.56 .391
42 263.40 .00 0. -1.26 .00 .000
AVERAGE VALUES ALONG FAILURE SURFACE
Total Normal Stress= 3197.33 (psf)
Pore Water Pressure= 613.11 (psf)
Shear Stress = 651.55 (psf)
Total Length of failure surface= 205.60 feet
For the single specified surface and the assumed angle
of the interslice forces, the SPENCER'S (1973)
procedure gives a
FACTOR OF SAFETY= 2.233
Total shear strength available
along specified failure surface= 225.66E+03 lb
*****************************************************************
For the specified surface, the analysis computed the following:
Negative (tensile) Normal Effective Force = 0 slices
Negative (tensile) Interslice Force = 2 slices
Unreasonable Location of Interslice Force = 0 slices
In view of these errors, the computed FOS maybe UNREASONABLE!
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