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Calhoun-Eaton Pit
M-1981-029
December 2018
AMENDMENT TO THE 112C PERMIT TO
THE COLORADO DIVISION OF
RECLAMATION, MINING, AND SAFETY
By:
United Companies
PREPARED BY:
TABLE OF CONTENTS
Introduction
EXHIBIT A ................................................................................... LEGAL DESCRIPTION
EXHIBIT B ............................................................................................................ INDEX MAP
EXHIBIT C ....................................................... PREMINE AND MINE PLAN MAPS
EXHIBIT D ...................................................................................................... MINING PLAN
EXHIBIT E ................................................................................... RECLAMATION PLAN
EXHIBIT F .................................................................................. RECLAMATION MAPS
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 AFFECTED LAND
AND SUBSTANCE TO BE MINED
EXHIBIT P ......................................... MUNICIPALITIES WITHIN TWO MILES
EXHIBIT Q PROOF OF MAILING OF NOTICES TO THE BOARD OF
COUNTY COMMISSIONERS AND SOIL CONSERVATION DISTRICT
EXHIBIT R ..................... PROOF OF FILING WITH COUNTY CLERK AND
RECORDER
EXHIBIT S ....................................... PERMANENT MAN-MADE STRUCTURES
RULE 1.6.2(1)(B)
GEOTECHNICAL STABILITY EXHIBIT
APPENDIX 1 – SOIL REPORT
APPENDIX 2 – MAPS
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December 2018 i-1
Introduction
The Calhoun-Eaton Pit has been mined since the 1970’s and has exhausted its reserves. The
western portion of the site, where the concrete plant is located, has been converted to an
industrial yard and was released from the reclamation permit area prior to 1996. The eastern
portion of the site was sold to Eagle County and Sierra Trail Investments and this area is still
under the reclamation permit. Eagle County has converted its portion of the permit area for use
as a recreation area, the Eagle River Preserve. Sierra Trail Investments has reclaimed its portion
of the permit area to an industrial yard as per approved Eagle County land use. This amendment
is to change the post mining land use from pasture to recreation and industrial yard in order to
comply with the scope of reclamation that has been completed. Approval of this amendment to
the permit will facilitate a complete release from the reclamation permit which was applied for
on June 22, 2018. Deviations from the approved Reclamation Plan, including water features
installed by Eagle County in the Eagle River Preserve, will be addressed in this amendment.
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December 2018 A-1
EXHIBIT A LEGAL DESCRIPTION
The site is located within the community of Edwards, Colorado, a census-designated place in
Eagle County, Colorado. A legal description is shown on Map C-1 which is included in
Appendix 2. A general location map is enclosed in Exhibit B which indicates the mine entrance
in Universal Transverse Mercator (UTM) coordinates in meters.
1. Legal Description - permit boundaries
The Calhoun – Eaton Pit is located approximately ½ to 1 mile west- southwest of I-70 Exit 163
in part of the West Half (W 1/2) of the Northeast Quarter (NE ¼) of the Southeast Quarter (SE
¼) of the Northwest Quarter (NW ¼) of Section 5, Township 5 South, Range 82 West, 6th
Principal Meridian (PM), Eagle County, Colorado. The pit is situated at an approximate
elevation of 7200 feet.
More particularly as follows:
With the west section line of Section 5 serving as the basis of bearing at N01°58’41” E; from the
east quarter corner of Section 5, T5S, R82W of the 6th PM, N 76°24'20" E a distance of 1402.30',
to the point of beginning;
thence N 02°48'07" E a distance of 349.03';
thence N 85°51'51" W a distance of 163.59';
thence N 01°13'29" E a distance of 704.07';
thence S 86°14'39" E a distance of 291.74';
thence S 85°42'39" E a distance of 351.66';
thence N 53°31'00" E a distance of 484.31';
thence N 89°45'07" E a distance of 139.20';
thence S 74°11'12" E a distance of 343.66';
thence N 04°54'34" E a distance of 187.89';
thence N 87°07'26" E a distance of 160.90';
thence S 64°25'37" E a distance of 142.33';
thence S 16°56'40" E a distance of 446.71';
thence S 46°19'49" E a distance of 205.56';
thence S 65°29'57" E a distance of 142.37';
thence S 03°21'54" W a distance of 552.77';
thence S 02°17'21" W a distance of 535.65';
thence N 87°34'48" W a distance of 680.47';
thence N 75°52'39" W a distance of 963.77';
thence N 75°58'02" W a distance of 428.02';
which is the point of beginning,
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December 2018 A-2
having an area of 66.07 acres more or less.
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December 2018 B-1
EXHIBIT B INDEX MAP
Figure 1 Location/ Index Map of the Calhoun-Eaton Pit approximately 1 mile west of the
town of Edwards, Colorado.
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December 2018 C-1
EXHIBIT C PREMINE AND MINE PLAN MAPS
Map C-1 Baseline Conditions
The baseline conditions of the Calhoun-Eaton Pit are detailed in Map C-1 located in Appendix 2.
Map C-2 Mine Plan
Since mining is complete, there is no mine plan map. See Map F-1 for the current and final
conditions of the site.
Map C-3 Cross Sections
Perpendicular cross-sections for the Calhoun-Eaton Pit were produced, see Map C-3 located in
Appendix 2.
.
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December 2018 D-1
EXHIBIT D MINING PLAN
1. General Mining Plan and Methods
The Calhoun-Eaton Pit has been mined since the 1970’s and has exhausted its reserves. No
mining or processing is conducted on site. Reclamation is complete. The site has had a number
of owners over time with the final owner whom operated mining and processing on the site being
United Companies. The land owners are now Eagle County and Sierra Trail Investments. The
final land use is changing from pasture to recreation and an industrial yard, which is reflected in
the amendment to the reclamation permit.
2. Earthmoving
Mining and processing on the permit area have ceased and as such, no earthmoving is planned or
will occur.
3. Water Information, Diversions, Impoundments, Rights and Augmentation
All water rights issues such as availability of water for this operation, consumption rates, dust
control, etc. are presented in Exhibit G - Water Information.
4. Size of worked areas
Mining and processing on the permit area have ceased and as such, no areas are being or will be
worked.
5. Mining Timetable
Table D-1 Mining Timetable
Years Activity
Present Mining and Processing
Complete
6. Deposit Description.
Mining and processing on the permit area have ceased. The deposit exploited during mining
consisted of unconsolidated sand and gravel.
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7. Primary and Secondary Commodities.
Mining and processing on the permit area have ceased. The primary and secondary commodities
exploited during mining and processing operations consisted of sand and gravel utilized mainly
as construction materials.
8. Incidental Products.
Mining and processing on the permit area have ceased. No incidental products were produced
during mining and processing operations.
9. Explosives.
Mining and processing on the permit area have ceased. No explosives are being, or will be, used.
10. Mine Facilities and Operation
No mining facilities, processing facilities, or equipment remain within the permit boundary.
11. Schedule of Operations
All mining and processing operations have ceased.
12. Eagle County Impacts and Environmental Impacts
There will be no impacts to Eagle County from mining and processing operations as these
activities have ceased. There will be no impacts to the environment from mining and processing
operations as these activities have ceased.
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December 2018 E-1
EXHIBIT E RECLAMATION PLAN
1. General Reclamation Plan including Types of Reclamation
The total area of the permit is 66.00 acres. The majority of the site, 62 acres, has been reclaimed
by the current owner, Eagle County, to recreational use. The northwest 4 acres of the permit area,
owned by Sierra Trail Investments, has been reclaimed to an industrial yard. Eagle County
imported fill material to lessen the slopes of the site to 3H:1V ratio or shallower and to provide
funding for the creation of the Eagle River Preserve. Phase 1 of the Preserve was completed as of
June 2008. Phases 2A was completed in 2009 and 2B was completed in 2010 as additional fill
material and funding became available. All three phases were similar in scope, design, and
execution. The remaining northwest corner of the site has been reclaimed to an industrial yard, as
that is the desire of the current landowner, Sierra Trail Investments.
The breakdown of reclamation areas onsite is as follows: four aces of industrial yard and 62
acres of rangeland for recreational use.
2. Comparison to Lands in Vicinity.
The reclamation of the preponderance of the permit area to recreational use, with an additional
four acres being reclaimed to a small industrial yard, is consistent with the adopted local and
state land use in the immediate vicinity.
3. Implementation of Reclamation Plans.
Reclamation of the permit area is complete and DRMS have found no violations or issues with
the reclamation. All reclamation performance standards, as outlined in Section 3.1 of the
‘Mineral Rules and Regulations of the Colorado Mined Land Reclamation Board for the
Extraction of Construction Materials’ promulgated October, 1995 have been met.
4. Reclamation Timetable and Sequence
Table E-2 Reclamation Timetable
Years Activity
Present Reclamation Complete
5. Final Grading
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December 2018 E-2
All mining and processing operations have ceased. All slopes have been graded to 3H:1V ratio or
shallower.
6. Seeding
Seeding schedule for Eagle County’s portion of the permit area reclaimed to recreation use was a
dryland grass seed mix and enhanced native turf mix installed as follows; Blue Gramma - 20%,
Buffalograss – 20%, Sideoats Geramma – 15%, Galleta Grass – 15%, Prairie Junegrass – 5%,
Western Wheatgrass – 20%, Blue Aster – 5%. Revegetation and seeding was not required on the
Sierra Trails Investment property that has been reclaimed to an industrial yard.
7. Fertilization
Eagle County purchased the majority of the permit area and reclaimed it to recreational use. The
reclamation is complete and fertilization, if needed, is now the responsibility of the current
landowner. Fertilization was not required on the Sierra Trails Investment property that has been
reclaimed to an industrial yard.
8. Revegetation
Rangeland
The 62 acres of the permit area that is on the property owned by Eagle County has been
reclaimed to rangeland as part of a park. The entire permit area has been revegetated with the
approved seed mix and plantings. The seed mix is detailed in Exhibit E-6, ‘Seeding’. The
existing vegetation community as installed by Eagle County on that portion of the permit area
converted to recreational use consists of native grasses, wetland perennials, deciduous canopy
trees, deciduous shrubs, willow cuttings, evergreen trees, and evergreen shrubs. A listing of all
perennials, shrubs, and trees, including quantities and as built locations for the Eagle River
Preserve, can be found in the attached example Landscape Plans from Norris Design.
Industrial Yard
The four acres of the permit area that is on the Sierra Trail Investments property has been
reclaimed to an industrial yard. This is in alignment with the approved land use in Eagle County.
9. Topsoiling
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December 2018 E-3
10. Topsoil was replaced to a thickness of 6-12 inches on the portion of the permit
owned by Eagle County and reclaimed to recreational use. The portion of the permit area
that is on the Sierra Trail Investments property has been reclaimed to an industrial yard
and as such the replacement of topsoil is not required.Post-Reclamation Site Drainage
The site currently has a stormwater discharge permit and will hold this permit until the DRMS
releases the site from reclamation liability. In general, the site drains north to the river. There are
a few small ponds shown on the Conceptual Landscape Plan of the Eagle River Preserve which
were installed by Eagle County after Eagle County purchased the site. Eagle County has
sufficient water supply to augment the water losses from this surface water evaporation. Eagle
County’s water right to cover all uses on their property can be provided by the County upon
request by DRMS. The portion of the site owned by Sierra Trail Investments and reclaimed to
an industrial yard handles all stormwater discharge according to their own permits and plans.
11. Weed Control
The weed control plan for the Calhoun-Eaton Pit is attached to this amendment. A July 11, 2018
inspection of the site by the Colorado Division of Reclamation, Mining, and Safety found that
noxious weeds, such as Musk Thistle and Oxeye Daisy, were sparsely populated throughout the
site. The Division recommended managing these weeds through yearly weed spraying. As the
owners of the site are now Eagle County and Sierra Trail Investments, United Companies will no
longer be conducting weed control on the site and weed control is now the responsibility of
Eagle County and Sierra Trail Investments. This area of Eagle County is known to have weeds of
concern such as thistle, knapweed, and others. United Companies had taken extreme care in
preventing weeds from establishing infestations in the permit area by doing the following: Each
mid-April, a noxious weed survey was made of the permit area. If any patches or plants have
been identified, they were sprayed by backpack sprayer or 4-wheeler using chemicals approved
for use by the weed control staff of Eagle County. This was done within 2 weeks after the
inspection when the weeds are most vulnerable. Care was taken to spot spray where possible to
avoid killing desirable broadleaf plants. After reclamation of portions of the site and after final
reclamation, weed surveys and spraying will continue until the perennial cover and production of
the site have met DRMS requirements and bond release has been obtained. These weed control
measures are now the responsibility of the current owners. The Division and Eagle County weed
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December 2018 E-4
control staff will be consulted regarding a weed infestation area and any control measures prior
to their initiation.
12. Revegetation Success Criteria
Revegetation will be deemed adequate when erosion is controlled, and the vegetation is
considered satisfactory according to Division standards. A July 11, 2018 inspection of the site by
the Colorado Division of Reclamation, Mining, and Safety found no problems or violations in
regards to the revegetation. The portion of the permit area that is on the Sierra Trail Investments
property has been reclaimed to an Industrial Yard. This portion of the reclamation is complete
and is not contingent upon revegetation as a criterion for success.
13. Monitoring Reclamation Success
Modifications to the reclamation plan are not anticipated, as reclamation is complete and the
latest DRMS inspection identified no problems or violations. Monitoring the reclamation on an
ongoing basis will ensure its success. The reclaimed land has demonstrated a capacity to control
erosion. If minor changes or modifications are needed to the seeding and reclamation plan,
revision plans will be submitted to the Division. It is hoped that the Division will provide
assistance in evaluating the success of the ongoing reclamation process.
14. Spill Prevention and Reporting
No fuel storage takes place on the portion of the site reclaimed to park use as mining and
reclamation are complete, therefore no fuel spills are possible.
15. Haul Roads and Access
There are two access points for the site. United Companies used the mine entrance to the west to
access the site during mining and processing operations. After reclamation was completed, and
the site was sold to Eagle County, an access was established from the roundabout on US
Highway 6 & 24 as shown on the Landscape Plan. Sierra Trail Investments portion of the permit
has been reclaimed to an industrial yard and is accessed from US Highway 6 & 24 on the
western end of the property using the traditional mine entrance.
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December 2018 F-1
EXHIBIT F RECLAMATION MAPS
Map F-1 Reclamation Plan indicates final grades, and final use of permit area and is attached to
this permit application.
All maps can be found in Appendix 2.
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December 2018 G-1
EXHIBIT G WATER INFORMATION
1. General
United Companies operated the Calhoun Eaton Pit in accordance with a stormwater permit
issued from the Colorado Department of Health Water Quality Control Division. The owner,
Eagle County, is operating the site under current Colorado Water Rights law.
2. Surface and Groundwater
After the cessation of mining and processing operations, the site was sold to Eagle County and to
Sierra Trail Investments. Drainage was modified to conform with the Conceptual Landscape
Design for the Eagle River Preserve on the Eagle County property. See Map F-1 in Exhibit C for
locations of all tributary water courses, wells, springs, stock water ponds, reservoirs, and ditches
on the affected lands. Drainage on the permitted and reclaimed area is generally from the south
of the site to the north, with excess water flowing into the Eagle River. A 4-foot-deep
sedimentation pond is located on the southeastern corner of the Eagle County property which
intercepts an intermittent stream that flows into the permit area. A series of ponds with wetland
shelfs and basins were also constructed on the portion of the site reclaimed to the Eagle River
Preserve. The ponds do not exceed 1.5 feet in depth and are surrounded by wetland shelfs
designed to have statured soils but to not have standing water under normal conditions. Pond
spillway outlets and inter-pond channels are rock lined in order to minimize erosion. All areas of
the Eagle County property have been graded in order to achieve positive drainage. The portion of
the site owned by Sierra Trail Investments and reclaimed to an industrial yard handles all
stormwater discharge according to their own permits and plans.
Percolation and groundwater resource testing were not required for the operation of the Calhoun-
Eaton pit. No permanent deleterious effects to groundwater were observed during mining and
processing operations at the pit and as such, none are anticipated in the future as all mining and
processing operations have ceased. The current use of the site as a recreational facility and
industrial yard is not anticipated to affect the groundwater in a deleterious way.
3. Aquifers
There are no known aquifers in the permit area.
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December 2018 G-2
4. De-watering Operations and Runoff from Disturbed Areas
Mining and processing have ceased on the site. No de-watering operations are occurring or are
planned. All of the permit area has been reclaimed, as such there is no run-off from disturbed
areas to be managed.
5. Water Requirements for the Operation and Water Rights
Mining operations and processing have been completed and therefore no water will be required
or consumed by these activities. There are no water diversions from the Eagle River. Water
rights are currently owned by Eagle County for use on their property. A pond on the Eagle
County property was constructed in 2008. The pond operation on site was neither a source of
water for nor was created by the mining operations. Eagle County now owns and operates this
pond within Colorado’s water rights system. A copy of the pertinent water rights may be
requested by DRMS from the current owner of the permit area, Eagle County. If the pond stores
or evaporates water out of priority, the Water Commissioner would regulate the release of
storage to prevent injury during a downstream senior water rights call. It is the opinion of Eagle
County that no water rights augmentation plan or other arrangement need be implemented as a
condition for United Companies to secure release of its reclamation obligation and any bond.
6. Water Sources
Mining and processing have ceased and the permit area has been reclaimed, therefore no sources
of water will be required for mining or reclamation.
7. National Pollutant Discharge Elimination Systems (NPDES) Permit
Mining and processing have ceased and the permit area has been reclaimed, therefore no NPDES
permit is required.
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December 2018 H-1
EXHIBIT H WILDLIFE INFORMATION
1. Significant Wildlife Resources on the Affected Lands
Significant game resources are not present on the site. Significant non-game resources are not
present on the site.
2. Seasonal Use of Affected Lands
The site has traditionally been utilized as pasture. The 62 acres of the site has been converted to
year-round recreational use by the current owner, Eagle County. The northwest portion of the
site comprising four acres has been reclaimed and converted to an industrial yard by the current
owner, Sierra Trail Investments.
3. Presence and Estimated Population of Threatened or Endangered Species in the
Area.
Threatened or endangered species from either the Federal or the State lists are not present on the
site.
4. General Effects of the Operation on the Existing Wildlife of the Area
Mining has occurred on this site since the 1960’s during which time wildlife have become
conditioned and adjusted to the activities. With the cessation of mining and processing on the
site, wildlife will generally be unaffected on the site.
5. Fish Resources
The Eagle River passes through the northern boundary of the site. This area of the river provides
excellent rafting and fishing opportunities. The area is pristine and the mining area is not
generally visible to rafters passing through. Anecdotal evidence from local professional river
guides note that this section of the river contains some of the best fishing in Eagle County.
Mining and reclamation activities are complete onsite, so there is no risk to the fishing resources.
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December 2018 I-1
EXHIBIT I SOILS INFORMATION
There are six types of natural soil either on the site itself or covering surrounding lands. These
soils vary in depth from 0 to 4 feet. The depth of salvage during mining operations was highly
variable and ranged from 3 or 4 inches to as much as 12 to 18 inches in places near the south
boundary of the property. The mining operation salvaged soil to return the irrigated field to its
current condition. A protective cover of western wheatgrass was planted on topsoil stockpiled for
any length of time. Topsoil was replaced during the reclamation process to a depth of 6-12
inches on the portion of the site owned by Eagle County and reclaimed to recreational use. As
per the approved land use, topsoil was not required to be replaced on the portion of the permit
area converted to an industrial yard.
A custom soil survey for the permit area is found in APPENDIX 1 – SOIL REPORT. Soils are
shown on Map C-1.
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December 2018 J-1
EXHIBIT J VEGETATION INFORMATION
1. Present Vegetation Types
Mining and processing have been completed and the site is reclaimed. Eagle County reclaimed
their portion of the site in three phases; 1, 2a, and 2b each being installed with a similar
vegetation community. The existing vegetation community as installed by Eagle County on that
portion of the permit area converted to recreational use consists of native grasses, wetland
perennials, deciduous canopy trees, deciduous shrubs, willow cuttings, evergreen trees, and
evergreen shrubs. A complete listing of all perennials, shrubs, and trees, including quantities and
as built locations for the Eagle River Preserve, can be found in the attached example Landscape
Plans from Norris Design. As per Norris Design, the dryland grass seed mix and enhanced native
turf mix installed is as follows; Blue Gramma - 20%, Buffalograss – 20%, Sideoats Geramma –
15%, Galleta Grass – 15%, Prairie Junegrass – 5%, Western Wheatgrass – 20%, Blue Aster –
5%. Revegetation was not required on the Sierra Trails Investment property that has been
reclaimed to an industrial yard.
2. Relationship of Present Vegetation to Soil Types
All vegetation types are compatible with the soil types and conditions found at the permit area.
3. Crop and Hay Production
The permit area has been reclaimed to recreation and industrial yard use, therefore there will be
no hay or crop production.
4. Vegetation Relationships to Topography
Please see the Landscape Plans as supplied by Norris Designs, and Map F-1 ‘Reclamation Map’
in Exhibit C for the relation of the types of vegetation to existing topography.
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December 2018 K-1
EXHIBIT K CLIMATE INFORMATION
1. General Information
The Calhoun-Eaton pit is situated at an approximate elevation of 7200 feet. The climate is semi-
arid and averages 46.7 inches of snow with 11.3 inches of melted liquid equivalent precipitation
annually. The average annual temperature is 44.5° F. Temperatures fall below freezing much of
the time in November through March. Precipitation occurs on average 3-5 days per month. The
site is classified as USDA Zone 5a, with an average growing season of approximately 180 days
from April 15 to October 15. Wind velocities average 6 miles per hour with occasionally high
velocity gusts and are prevailing from the west and northwest. Strong winds during the spring
months may cause rapid drying of the soil surface.
Table K-1 Climate Data of Eagle, Colorado1
Average Temperature (F) Average Precipitation (in)
Maximum Minimum Total precip. Total snow
January 32.4 10.1 0.5 6.5
February 37.9 16.8 0.5 7.3
March 47.2 25.8 0.8 5.4
April 56.6 31 1.2 3.6
May 67.3 38.3 1 1.1
June 77.6 44.3 0.7 0
July 83.1 51.3 1.5 0
August 81.5 50.5 0.8 0
September 72.7 42.1 1.4 0.3
October 60.3 31.8 1.2 2.8
November 44.4 21.9 0.9 8
December 32.8 12.5 0.8 11.7
Yearly (avg) (58) (31) 11.3 46.7
1 Approximately 12 miles west of the Calhoun-Easton Pit (source: https://www.weather-us.com/en/colorado-
usa/eagle-climate
https://www.wunderground.com/history).
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December 2018 L-1
EXHIBIT L RECLAMATION COSTS
Reclamation is complete at the site. Eagle County has completed the conversion of the portion of
the site that it owns to recreational use. Sierra Trail Investments has completed the conversion of
the portion of the site that it owns to an industrial yard. No further tasks remain and no further
reclamation costs are anticipated. The current bond for the Calhoun-Eaton pit as of September
11, 2018, is $134,900.00
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December 2018 M-1
EXHIBIT M OTHER PERMITS AND LICENSES
The following permits and licenses were necessary for the full operation of the Calhoun-Eaton
Pit and are attached to this permit amendment:
1. Eagle County Special Use Permits Zs-23-76, Zs-130-81, and Zs-131-81 amended by
AM-01 1996 ‘Submittal to Amend Special Use Permit Zs-131-81’.
2. Air Permit issued by the Air Pollution Control Division of the Colorado Department
of Public Health and Environment.
3. Water quality Control Commission Stormwater Discharge Permit.
4. Spill Prevention Control and Countermeasure (SPCC) Plan.
No other permits or licenses were required for the operation of the mining and processing.
Mining and processing have ceased and the permit area has been sold and reclaimed, therefore
no new permits or licenses will be required.
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December 2018 N-1
EXHIBIT N SOURCE OF LEGAL RIGHT TO ENTER
The surface owners of the property are Eagle County and Sierra Trial Investments. A tipping fee
agreement is enclosed with this permit amendment which constituted the source of United
Companies legal right to enter and to conduct reclamation activities.
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December 2018 O-1
EXHIBIT O OWNERS OF AFFECTED LAND
AND SUBSTANCE TO BE MINED
The mined substance was sand and gravel. No other lands will be affected by the operation. The
surface and mineral owners of the property are:Eagle County
500 Broadway PO Box 850
Eagle, Colorado. 81631
And
Sierra Trail Investments LLC
122 W Timber Draw
Edwards Colorado 81632-6009
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December 2018 P-1
EXHIBIT P MUNICIPALITIES WITHIN TWO MILES
The community of Edwards, Colorado, a census-designated place in Eagle County, Colorado, is
located approximately 1 mile east of the Calhoun-Easton Pit and is the only municipality within
two miles of the Pit.
Calhoun-Eaton Pit
December 2018 Q-1
EXHIBIT Q PROOF OF MAILING OF NOTICES TO THE BOARD OF
COUNTY COMMISSIONERS AND SOIL CONSERVATION DISTRICT
Notices were filed with the Eagle Board of Commissioners and the Board of Supervisors of the
Local Conservation District, Eagle County District in support of this permit amendment. Proof of
the mailing of the required notices is attached.
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December 2018 R-1
EXHIBIT R PROOF OF FILING WITH COUNTY CLERK AND
RECORDER
A return receipt from the Eagle County Clerk indicating the date on which the application was
placed with the County Clerk and Recorder for public viewing is attached to this permit
amendment.
Calhoun-Eaton Pit
December 2018 S-1
EXHIBIT S PERMANENT MAN-MADE STRUCTURES
All mining and processing have ceased at the permit area and as such no significant, valuable,
and permeant man-made structures located within 200 feet of the affected land will be adversely
affected.
Calhoun-Eaton Pit
December 2018 RULE-1
RULE 1.6.2(1)(B)
Prior to the submittal of the application, a sign was erected at the entrance to the site which
contained all the required information regarding Rule 1.6.2(1)(b).
Please see attached sign certification.
Calhoun-Eaton Pit
December 2018 GS-1
GEOTECHNICAL STABILITY EXHIBIT
No excavation will be conducted as part of the proposed amendment, so no geotechnical stability
exhibit is applicable.
Calhoun-Eaton Pit
December 2018
APPENDIX 1 – SOIL REPORT
United States
Department of
Agriculture
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Aspen-Gypsum Area,
Colorado, Parts of Eagle,
Garfield, and Pitkin
Counties
Calhoun Eaton
Natural
Resources
Conservation
Service
December 4, 2018
Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil
Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?
cid=nrcs142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
2
alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3
Contents
Preface....................................................................................................................2
How Soil Surveys Are Made..................................................................................5
Soil Map..................................................................................................................8
Soil Map................................................................................................................9
Legend................................................................................................................10
Map Unit Legend................................................................................................12
Map Unit Descriptions........................................................................................12
Aspen-Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin
Counties...................................................................................................14
38—Evanston loam, 1 to 6 percent slopes..................................................14
92—Redrob loam, 1 to 6 percent slopes.....................................................15
107—Uracca, moist-Mergel complex, 1 to 6 percent slopes, extremely s..16
108—Uracca, moist-Mergel complex, 6 to 12 percent slopes, extremely...18
109—Uracca, moist-Mergel complex, 12 to 25 percent slopes,
extremely..............................................................................................19
120—Water.................................................................................................21
References............................................................................................................22
4
How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil-vegetation-landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil-landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil-landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field-observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
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identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
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7
Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
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9
Custom Soil Resource Report
Soil Map
438970043898004389900439000043901004390200438970043898004389900439000043901004390200362300 362400 362500 362600 362700 362800 362900 363000 363100 363200
362300 362400 362500 362600 362700 362800 362900 363000 363100
39° 39' 4'' N 106° 36' 20'' W39° 39' 4'' N106° 35' 40'' W39° 38' 43'' N
106° 36' 20'' W39° 38' 43'' N
106° 35' 40'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
0 200 400 800 1200
Feet
0 50 100 200 300
Meters
Map Scale: 1:4,400 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Aspen-Gypsum Area, Colorado, Parts of
Eagle, Garfield, and Pitkin Counties
Survey Area Data: Version 9, Sep 10, 2018
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Aug 18, 2012—Oct
13, 2017
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
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10
MAP LEGEND MAP INFORMATION
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
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11
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
38 Evanston loam, 1 to 6 percent
slopes
8.3 12.7%
92 Redrob loam, 1 to 6 percent
slopes
0.3 0.4%
107 Uracca, moist-Mergel complex,
1 to 6 percent slopes,
extremely s
26.0 39.5%
108 Uracca, moist-Mergel complex,
6 to 12 percent slopes,
extremely
27.8 42.2%
109 Uracca, moist-Mergel complex,
12 to 25 percent slopes,
extremely
3.0 4.5%
120 Water 0.4 0.6%
Totals for Area of Interest 65.7 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
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12
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
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Aspen-Gypsum Area, Colorado, Parts of Eagle, Garfield, and Pitkin
Counties
38—Evanston loam, 1 to 6 percent slopes
Map Unit Setting
National map unit symbol: jq5t
Elevation: 6,500 to 8,000 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 42 to 46 degrees F
Frost-free period: 80 to 90 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Evanston and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Evanston
Setting
Landform: Valley sides, terraces, alluvial fans
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed alluvium
Typical profile
H1 - 0 to 14 inches: loam
H2 - 14 to 31 inches: clay loam
H3 - 31 to 60 inches: loam
Properties and qualities
Slope: 1 to 6 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20
to 0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: High (about 10.1 inches)
Interpretive groups
Land capability classification (irrigated): 4c
Land capability classification (nonirrigated): 4c
Hydrologic Soil Group: C
Ecological site: Deep Loam (R048AY292CO)
Other vegetative classification: DEEP LOAM (null_11)
Hydric soil rating: No
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Minor Components
Other soils
Percent of map unit: 15 percent
Hydric soil rating: No
92—Redrob loam, 1 to 6 percent slopes
Map Unit Setting
National map unit symbol: jq7r
Elevation: 5,800 to 7,200 feet
Mean annual precipitation: 16 to 18 inches
Mean annual air temperature: 40 to 44 degrees F
Frost-free period: 85 to 105 days
Farmland classification: Not prime farmland
Map Unit Composition
Redrob and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Redrob
Setting
Landform: Terraces, valley floors, flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed alluvium derived from sandstone and shale
Typical profile
H1 - 0 to 14 inches: loam
H2 - 14 to 20 inches: stratified loamy sand to stony loam
H3 - 20 to 60 inches: extremely cobbly loamy sand
Properties and qualities
Slope: 1 to 6 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Somewhat poorly drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.60 to 2.00 in/hr)
Depth to water table: About 18 to 48 inches
Frequency of flooding: Rare
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Available water storage in profile: Low (about 4.3 inches)
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Interpretive groups
Land capability classification (irrigated): 4w
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: C
Ecological site: River Bottom (R048AY236CO)
Other vegetative classification: riverbottom (null_19)
Hydric soil rating: No
Minor Components
Fluvaquents
Percent of map unit: 10 percent
Landform: Flood plains
Hydric soil rating: Yes
Other soils
Percent of map unit: 5 percent
Hydric soil rating: No
107—Uracca, moist-Mergel complex, 1 to 6 percent slopes, extremely s
Map Unit Setting
National map unit symbol: jq4g
Elevation: 6,800 to 8,400 feet
Mean annual precipitation: 16 to 19 inches
Mean annual air temperature: 40 to 43 degrees F
Frost-free period: 75 to 95 days
Farmland classification: Not prime farmland
Map Unit Composition
Uracca, moist, and similar soils: 50 percent
Mergel and similar soils: 40 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Uracca, Moist
Setting
Landform: Alluvial fans, structural benches, valley sides
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed alluvium derived from igneous and metamorphic rock
Typical profile
H1 - 0 to 8 inches: cobbly sandy loam
H2 - 8 to 15 inches: very cobbly sandy clay loam
H3 - 15 to 60 inches: extremely cobbly loamy sand
Properties and qualities
Slope: 1 to 6 percent
Depth to restrictive feature: More than 80 inches
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Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Very low (about 2.6 inches)
Interpretive groups
Land capability classification (irrigated): 6s
Land capability classification (nonirrigated): 6s
Hydrologic Soil Group: B
Ecological site: Stony Loam (R048AY237CO)
Other vegetative classification: Stony Loam (null_82)
Hydric soil rating: No
Description of Mergel
Setting
Landform: Alluvial fans, structural benches, valley sides
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Glacial outwash
Typical profile
H1 - 0 to 8 inches: cobbly loam
H2 - 8 to 20 inches: very cobbly sandy loam
H3 - 20 to 60 inches: extremely stony sandy loam
Properties and qualities
Slope: 1 to 6 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.60 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Low (about 3.3 inches)
Interpretive groups
Land capability classification (irrigated): 4s
Land capability classification (nonirrigated): 4s
Hydrologic Soil Group: A
Ecological site: Stony Loam (R048AY237CO)
Other vegetative classification: Stony Loam (null_82)
Hydric soil rating: No
Minor Components
Other soils
Percent of map unit: 10 percent
Hydric soil rating: No
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108—Uracca, moist-Mergel complex, 6 to 12 percent slopes, extremely
Map Unit Setting
National map unit symbol: jq4h
Elevation: 6,800 to 8,400 feet
Mean annual precipitation: 16 to 19 inches
Mean annual air temperature: 40 to 43 degrees F
Frost-free period: 75 to 95 days
Farmland classification: Not prime farmland
Map Unit Composition
Uracca, moist, and similar soils: 50 percent
Mergel and similar soils: 40 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Uracca, Moist
Setting
Landform: Valley sides, alluvial fans, structural benches
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed alluvium derived from igneous and metamorphic rock
Typical profile
H1 - 0 to 8 inches: cobbly sandy loam
H2 - 8 to 15 inches: very cobbly sandy clay loam
H3 - 15 to 60 inches: extremely cobbly loamy sand
Properties and qualities
Slope: 6 to 12 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Very low (about 2.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Stony Loam (R048AY237CO)
Other vegetative classification: Stony Loam (null_82)
Hydric soil rating: No
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Description of Mergel
Setting
Landform: Alluvial fans, structural benches, valley sides
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Glacial outwash
Typical profile
H1 - 0 to 8 inches: cobbly loam
H2 - 8 to 20 inches: very cobbly sandy loam
H3 - 20 to 60 inches: extremely stony sandy loam
Properties and qualities
Slope: 6 to 12 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.60 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Low (about 3.3 inches)
Interpretive groups
Land capability classification (irrigated): 4s
Land capability classification (nonirrigated): 4s
Hydrologic Soil Group: A
Ecological site: Stony Loam (R048AY237CO)
Other vegetative classification: Stony Loam (null_82)
Hydric soil rating: No
Minor Components
Other soils
Percent of map unit: 10 percent
Hydric soil rating: No
109—Uracca, moist-Mergel complex, 12 to 25 percent slopes, extremely
Map Unit Setting
National map unit symbol: jq4j
Elevation: 6,800 to 8,400 feet
Mean annual precipitation: 16 to 19 inches
Mean annual air temperature: 40 to 43 degrees F
Frost-free period: 75 to 95 days
Farmland classification: Not prime farmland
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Map Unit Composition
Uracca, moist, and similar soils: 50 percent
Mergel and similar soils: 40 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Uracca, Moist
Setting
Landform: Valley sides, alluvial fans, structural benches
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed alluvium derived from igneous and metamorphic rock
Typical profile
H1 - 0 to 6 inches: cobbly sandy loam
H2 - 6 to 12 inches: very cobbly sandy clay loam
H3 - 12 to 60 inches: extremely cobbly loamy sand
Properties and qualities
Slope: 12 to 25 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Very low (about 2.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: B
Hydric soil rating: No
Description of Mergel
Setting
Landform: Alluvial fans, structural benches, valley sides
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Glacial outwash
Typical profile
H1 - 0 to 7 inches: cobbly loam
H2 - 7 to 18 inches: very cobbly sandy loam
H3 - 18 to 60 inches: extremely stony sandy loam
Properties and qualities
Slope: 12 to 25 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Low
Custom Soil Resource Report
20
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
high (0.60 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 10 percent
Available water storage in profile: Low (about 3.2 inches)
Interpretive groups
Land capability classification (irrigated): 6e
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: A
Hydric soil rating: No
Minor Components
Other soils
Percent of map unit: 10 percent
Hydric soil rating: No
120—Water
Map Unit Composition
Water: 95 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Minor Components
Aquolls
Percent of map unit: 5 percent
Landform: Marshes
Down-slope shape: Linear
Across-slope shape: Linear
Hydric soil rating: Yes
Custom Soil Resource Report
21
References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/national/soils/?cid=nrcs142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/
home/?cid=nrcs142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
22
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/soils/scientists/?cid=nrcs142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?
cid=nrcs142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf
Custom Soil Resource Report
23
Calhoun-Eaton Pit
December 2018
APPENDIX 2 – MAPS
7
2
0
0
'
7200'
715
0'
7200'
7
2
0
0
'7150'Section 5, T5S R82W
EAGLE RIVER
EAGLE RIVER
US-6
A
A'
B
165.5'
1
:722.3'1
(291.7'
6
(
351.7'
6
(
484.
3'
1
(
139.2'
1
(
343.7'
6
(167.1'1
(23.6'
1
(
130.9'
6
(
12
8
.
1
'
6
(111.3
'6
(106.1'6
(32.2'6
(94.5'6
(96.7
'6
(75.9
'6
(
1
3
1
.
4
'
6
(
10
8
.
3
'
6
(530.8'6
:490.6'6
:70.9'
1
:
231.7'
6
:
387.5'
1
:
629.6'
1
:
739.6'
1
:335.3'1
(1413.7'
1
(
SIERRA TRAIL INVESTMENTS,
LLC
122 W TIMBER DRAW
EDWARDS, CO 81632
EAGLE COUNTY
PO BOC 850
EAGLE, CO 81631
MICHAEL B. EATON
2012 IRREVOCABLE TRUST
PO BOX 871
EDWARDS, CO 81632
COLORADO DEPT. OF
TRANSPORTATION
2829 W HOWARDS PL
DENVER, CO 80204
KURT E. VOGELMAN
REVOCABLE TRUST
PO BOX 806
EDWARDS, CO 81632
EDWARDS WEST END HOLDINGS, LLC
191 N WACKER DR, SUITE 1500
CHICAGO, IL 60606
33601 HIGHWAY 6 LLC
90 HUDSON ST FL 8
JERSEY CITY, NJ 07302
EAGLE COUNTY
PO BOC 850
EAGLE, CO 81631
SIERRA TRAIL INVESTMENTS,
LLC
122 W TIMBER DRAW
EDWARDS, CO 81632
30.7'
6
(
DRMS Permit Number: M1981029
Latitude: 39.64611N Longitude: 106.59881W
Major Watershed: Eagle River
Mine Entry Location:
Map Georeferencing Information:Datum: NAD83 Projection: CO Central
Section: 5 Township: 5S Range: 82W
File Name: E:\Work\Dropbox\United Companies\Calhoun\Autocad\Calhourn Eaton 181129.dwg
Map C-1 Baseline Conditions
Calhoun Eaton Pit
United Companies
State: CO County: Eagle Nearest Town: Edwards
PM: 6th
Imagery Source: Google Earth Imagery Date: 2016
Drawn by: BEL
Checked by: BEL
Approved by: BEL
Date: 11/14/18
Date: 11/20/18
Date: 11/20/18
Map Scale: 1":
0
Littleton, CO 80123 E-Mail - info@lewicki.biz
Greg Lewicki And Associates
3375 W Powers Circle Phone (303)-346-5196
Survey Source: Google Earth
100'
100 200
PERMIT & AFFECTED AREA: 66 ACRES
PRE MINE VEGETATION & LAND USE:
PASTURE AND MIXED SHRUBS
PRE MINE VEGETATION & LAND USE ALONG RIVER:
BOTTOMLAND FOREST
WET GRASS LAND BOTTOMS
OWNER: STATE OF CO
US-6
OWNER: 33601 HWY 6 LLC
BUILDING
FENCE
OWNER: B&D LP
BUILDING
OWNER: KURT VOGELMAN REV. TRUST
BUILDING
OWNER: SIERRA TRAIL INVESTMENTS LLC
CONCRETE FOUNDATION
FENCE
DRMS Permit Boundary
BUILDINGS AND RELATED STRUCTURES
Building
Airport, paved landing strip,
Unpaved landing strip
Tanks
Located or landmark object
BASELINE CONTOURS (USGS)
Retaining wall, jetty, or warf
200' Offset of DRMS Permit Boundary
Index
Approximate of indefinite
Intermediate
Supplementary
Approximate of indefinite
LAND INFORMATION
Mining claim or property boundary
Mining claim or property monument
Well (other than water)
Fence
RIVERS, LAKES, SHORELINES, AND CANALS
Perennial stream/ditch
Perennial river
Intermittent stream/ditch
Intermittent river
Dam
Perennial lake/pond
Intermittent lake/pond
Dry lake/pond
Elevated aqueduct, flume, or conduit
Waterwell
Spring or seep
ROADS AND RELATED FEATURES
Roads
TRANSMISSION LINES AND PIPELINES
Power transmission line; pole; tower
Telephone/data line, above ground
Pipeline (non-water), above ground
Telephone/data line, buried
Pipeline (non-water), buried
Power transmission line, buried
Drainage Basin
MINING FEATURES
VEGETATION
Riverine Vegetation
Well Name
Feature Label
5280'
5281'
Railroad
Buried aqueduct, flume, or conduit
Well Name
runway, taxiway, or apron
LEGEND
Flood Plain
OWNER: EAGLE COUNTY
0+000+200+400+600+801+001+201+401+601+802+002+202+402+602+803+003+203+403+603+804+004+204+404+604+805+005+205+405+605+806+006+206+406+606+807+007+207+407+607+808+008+208+408+608+809+009+209+409+609+8010+0010+2010+4010+6010+8011+0011+2011+4011+6011+8012+0012+2012+4012+6012+8013+0013+2013+4013+6013+8014+0014+2014+4014+6014+8015+0015+2015+4015+6015+8016+0016+2016+4016+6016+8017+0017+2017+4017+6017+8018+0018+2018+4018+6018+8019+0019+2019+4019+6019+8020+0020+2020+4020+6020+8021+0021+2021+4021+6021+8022+0022+2022+4022+6022+8023+0023+2023+4023+6023+8024+0024+2024+4024+6024+8025+007120'
7140'
7160'
7180'
7200'
7220'
7120'
7140'
7160'
7180'
7200'
7220'0+000+200+400+600+801+001+201+401+601+802+002+202+402+602+803+003+203+403+603+804+004+204+404+604+805+005+205+405+605+806+006+206+406+606+807+007+207+407+607+808+008+208+408+608+809+009+209+409+609+8010+0010+2010+4010+6010+8011+0011+2011+4011+6011+8012+0012+2012+4012+6012+8013+0013+2013+4013+6013+8014+0014+2014+4014+6014+8015+0015+2015+4015+6015+8016+0016+2016+4016+6016+8017+0017+2017+4017+6017+8018+0018+2018+4018+6018+8019+0019+2019+4019+6019+807120'
7140'
7160'
7180'
7200'
7220'
7240'
7120'
7140'
7160'
7180'
7200'
7220'
7240'
A A'
B B'
72
0
0
'
7200'
7150'
7200'
72
0
0
'7150'7250'
EAGLE RIVER
EAGLE RIVER
US-6
A
A'
B
B'
7220'
7220'
7220'7170'
7190'
719
0
'
7190'
7180'
7180'
7180'
7170'
7170'
7170'7170'7160'
7160'
7160'7160'7150'7150'7150'
7150'
7210'7210'7210'
7210'
7200'
72
0
0
'7200'7210'
7200'7190'
7180'7170'7160'
71
5
0
'7140'7140'7140'
7140'
7140'
7130'
7130'
7130'
7130'
7130'7130'7220'72
3
0
'7200'722
0
'
7230'
722
0
'
721
0
'
72
1
0
'
7200'
7200'
7190'7190'7180'
718
0
'7180'7170'7170'
7160'
71
6
0
'
732
0
'
7290'
72
8
0
'
7270
'726
0
'
725
0
'
7240'
725
0
'7240'724
0
'
723
0
'7230'
7220'7220'7170'
71
6
0
'
7170'7180'71
9
0
'
7200'7180'7170'7180'7180'
7160'
7150'
7130'
7180'
DRMS Permit Number: M1981029
Latitude: 39.64611N Longitude: 106.59881W
Major Watershed: Eagle River
Mine Entry Location:
Map Georeferencing Information:Datum: NAD83 Projection: CO Central
Section: 5 Township: 5S Range: 82W
File Name: E:\Work\Dropbox\United Companies\Calhoun\Autocad\Calhourn Eaton 181129.dwg
Map C-3 Cross Sections
Calhoun Eaton Pit
United Companies
State: CO County: Eagle Nearest Town: Edwards
PM: 6th
Imagery Source: Google Earth Imagery Date: 2016
Drawn by: BEL
Checked by: BEL
Approved by: BEL
Date: 11/14/18
Date: 11/20/18
Date: 11/20/18
Map Scale: 1":
0
Littleton, CO 80123 E-Mail - info@lewicki.biz
Greg Lewicki And Associates
3375 W Powers Circle Phone (303)-346-5196
Survey Source: Google Earth
400
400 800
BASELINE TOPO FROM USGS
RECLAIMED FROM LIDAR
DISCREPANCIES EXPECTED
CROSS SECTIONS SCALE AS SHOWN
DRMS Permit Boundary
CROSS SECTION ITEMS
Baseline (USGS)
Reclaimed (Eagle County LIDAR)
LEGEND
BASELINE TOPO FROM USGS
RECLAIMED FROM LIDAR
DISCREPANCIES EXPECTED
EAGLE RIVER
US 6
PARK TURN AROUND
FULLY REVEG.
SLOPES
FULLY REVEG.
SLOPES
FULLY REVEG.
SLOPES
SIERRA TRAILS
INDUSTRIAL YARD
EAGLE COUNTY PRESERVE
Section 5, T5S R82W
EAGLE RIVER
EAGLE RIVER
US-6
A
A'
B
7220'
7220'
7220'7170'
7190'
71
9
0
'
7190'
7180'
7180'
7180'
7170'
7170'
7170'7170'7160'
7160'
7160'7160'7150'7150'715
0'
7150'
7210'7210'7210'
7210
'
7200'7200'7200'7180'7140'7140'7140'
7140'
7140'
7130'
7130'
7130'
7130
'7200'72
2
0
'
721
0
'
7
2
1
0
'
7200'
7200'
719
0'7190'7180'7180'7170'7170'
7160'
71
6
0
'
7170'
7
1
6
0
'
7170'7180'7
1
9
0
'7200'7
1
8
0
'
7170'7180'7180'
7160'
7150'
7130'
7180'
DRMS Permit Number: M1981029
Latitude: 39.64611N Longitude: 106.59881W
Major Watershed: Eagle River
Mine Entry Location:
Map Georeferencing Information:Datum: NAD83 Projection: CO Central
Section: 5 Township: 5S Range: 82W
File Name: E:\Work\Dropbox\United Companies\Calhoun\Autocad\Calhourn Eaton 181129.dwg
Map F-1 Reclamation Plan
Calhoun Eaton Pit
United Companies
State: CO County: Eagle Nearest Town: Edwards
PM: 6th
Imagery Source: Google Earth Imagery Date: 2016
Drawn by: BEL
Checked by: BEL
Approved by: BEL
Date: 11/14/18
Date: 11/20/18
Date: 11/20/18
Map Scale: 1":
0
Littleton, CO 80123 E-Mail - info@lewicki.biz
Greg Lewicki And Associates
3375 W Powers Circle Phone (303)-346-5196
Survey Source: Google Earth
100'
100 200
PERMIT & AFFECTED AREA: 66 ACRES
POST MINE VEGETATION & LAND USE:
RECREATION
POST MINE VEGETATION & LAND USE ALONG RIVER:
RECREATION
OWNER: B&D LP
BUILDING
DRMS Permit Boundary
BUILDINGS AND RELATED STRUCTURES
Building
Airport, paved landing strip,
Unpaved landing strip
Tanks
Located or landmark object
BASELINE CONTOURS (USGS)
Retaining wall, jetty, or warf
200' Offset of DRMS Permit Boundary
Index
Approximate of indefinite
Intermediate
Supplementary
Approximate of indefinite
LAND INFORMATION
Mining claim or property boundary
Mining claim or property monument
Well (other than water)
Fence
RIVERS, LAKES, SHORELINES, AND CANALS
Perennial stream/ditch
Perennial river
Intermittent stream/ditch
Intermittent river
Dam
Perennial lake/pond
Intermittent lake/pond
Dry lake/pond
Elevated aqueduct, flume, or conduit
Waterwell
Spring or seep
ROADS AND RELATED FEATURES
Roads
TRANSMISSION LINES AND PIPELINES
Power transmission line; pole; tower
Telephone/data line, above ground
Pipeline (non-water), above ground
Telephone/data line, buried
Pipeline (non-water), buried
Power transmission line, buried
Drainage Basin
MINING FEATURES
VEGETATION
Riverine Vegetation
Well Name
Feature Label
5280'
5281'
Railroad
Buried aqueduct, flume, or conduit
Well Name
runway, taxiway, or apron
LEGEND
Flood Plain
RECLAIMED CONTOURS
Index
Approximate of indefinite
Intermediate
Supplementary
Approximate of indefinite
5280'
5281'
EAGLE COUNTY PARK BUILDINGS
POST MINE VEGETATION & LAND USE:
INDUSTRIAL YARD