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GRAVEL MINING APPLICANT/OPERATOR:
<br />AGGREGATE INDUSTRIES-WCR. INC.
<br />1687 COLE BLVD, STE 300
<br />GOLDEN, COLORADO 80401
<br />SURFACE OWNERS:
<br />AGGREGATE INDUSTRIES-WCR. INC.(TRACTS A, B, D, E, F, H, AND M)
<br />1687 COLE BLVD, STE 300
<br />GOLDEN, COLORADO 80401
<br />CITY OF AURORA (TRACTS C, G, K AND N)
<br />15151 EAST ALAMEDA PARKWAY, STE 3600
<br />AURORA, COLORADO 80012
<br />ADAMS COUNTY (TRACTS L & 0)
<br />ADAMS COUNTY GOVERNMENT CENTER
<br />4430 SOUTH ADAMS COUNTY PARKWAY
<br />BRIGHTON, COLORADO 80601
<br />YOSHI & SUZU, LLP (TRACTS P & Q)
<br />PO BOX 508
<br />BRIGHTON, CO 80601
<br />DOROTHY AND JAMES STRUCK (TRACT R)
<br />507 COUNTY ROAD 23.5
<br />BRIGHTON, COLORADO 80603
<br />TOBY STRUCK (TRACT S)
<br />527 COUNTY ROAD 23.5
<br />BRIGHTON, COLORADO 80603
<br />UTILITY INFORMATION
<br />UTILITY INFORMATION TAKEN FROM THE TUCSON SOUTH ALTA/NSPS
<br />LAND TITLE SURVEY DATED SEPTEMBER 7, 2018 BY CIVIL ARTS AND
<br />STRUCTURES SURVEY DATED SEPTEMBER 2, 2021.
<br />PLEASE REFER TO SHEETS C-2, C-3 AND C-4 FOR ADJACENT
<br />PROPERTY OWNERS WITHIN 200' OF PERMIT BOUNDARY. ADJACENT
<br />PROPERTY OWNER INFORMATION WAS PROVIDED BY ADAMS
<br />COUNTY AND WELD COUNTY RECORDS.
<br />FLOOD HAZARD LEGEND:
<br />EFFECTIVE ZONE AE: AREA OF 1% ANNUAL CHANCE FLOOD WITH
<br />BASE FLOOD ELEVATIONS DETERMINED,AS SHOWN ON FEMA FIRM
<br />(MARCH 15, 2007)
<br />EFFECTIVE ZONE X: AREAS OF 0.2% ANNUAL CHANCE FLOOD; AREAS
<br />OF 1% ANNUAL CHANCE FLOOD WITH AVERAGE DEPTHS OF LESS
<br />THAN 1 FOOT OR WITH DRAINAGE AREAS LESS THAN 1 SQUARE MILE;
<br />AND AREAS PROTECTED BY LEVEES FROM 1 % ANNUAL CHANCE
<br />FLOOD, AS SHOWN ON FEMA FIRM (MARCH 5, 2007)
<br />EFFECTIVE FLOODWAY: THE FLOODWAY IS THE CHANNEL OF A
<br />STREAM PLUS ANY ADJACENT FLOODPLAIN AREAS THAT MUST BE
<br />LEFT FREE OF ENCROACHMENT SO THAT THE 1% ANNUAL CHANCE
<br />FLOOD CAN BE CARRIED WITHOUT SUBSTANTIAL INCREASES IN
<br />FLOOD HEIGHTS, AS SHOWN ON FEMA FIRM (MARCH 5, 2007)
<br />PRE -PROJECT / MINING CONDITIONS: AREA IF 1% ANNUAL CHANCE
<br />FLOODPLAIN PER TETRA TECH STUDY (NOV. 2018 OR AS REVISED)
<br />TRACT A
<br />TRACT B
<br />t
<br />BRANTNER DITCH' ` BRIGHTON DITCH
<br />71,1
<br />TRACT _K
<br />(NO MINING ON I
<br />THIS TRACT)
<br />MINING AREA ACREAGE TABLE:
<br />AREA/PHASE
<br />TRACT
<br />PERMIT BOUNDARY
<br />AFFECTED AREA
<br />MINED
<br />AREA
<br />WEST/
<br />PHASE1
<br />A
<br />82.6
<br />137.6
<br />82.6
<br />88.6
<br />72.0
<br />B
<br />1.0
<br />1.0
<br />C
<br />5.0
<br />5.0
<br />K
<br />49.0
<br />0.0
<br />EAST/
<br />PHASE2
<br />D
<br />14.4
<br />139.4
<br />14.4
<br />139.4
<br />83.8
<br />E
<br />30.7
<br />30.7
<br />F
<br />29.6
<br />29.6
<br />G
<br />4.9
<br />4.9
<br />H
<br />32.6
<br />32.6
<br />M
<br />27.2
<br />27.2
<br />CONVEYOR
<br />N
<br />3.1
<br />7.7
<br />3.1
<br />7.7
<br />0.0
<br />0
<br />0.1
<br />0.1
<br />P
<br />0.1
<br />0.1
<br />Q
<br />2.9
<br />2.9
<br />R
<br />1.1
<br />1.1
<br />S
<br />0.4
<br />0.4
<br />TUCSON ST
<br />L
<br />2.9
<br />2.9
<br />2.9
<br />2.9
<br />0.0
<br />TOTALS
<br />287.6
<br />238.6
<br />155.8
<br />TUCSON SOUTH RESOURCE
<br />PRE -MINING AND MINING PLAN MAPS
<br />MINING NOTES
<br />1. REFER TO EXHIBITS C-2, C-3 AND C-4 FOR ADJACENT PROPERTY OWNERS, SOURCE OF
<br />SURVEY/TOPOGRAPHY, AND BENCHMARK INFORMATION.
<br />2. AN ENGINEERING STABILITY ANALYSIS FOR SLIDING FAILURE HAS BEEN PERFORMED. MINING
<br />OCCURRING WITHIN 200' OF A MAN-MADE STRUCTURE NOT OWNED BY THE APPLICANT/OPERATOR
<br />HAS ADEQUATE SETBACK FOR SLIDING FAILURE. THE LIMIT OF MINING EXCAVATION PER THE
<br />GEOTECHNICAL SLOPE STABILITY ANALYSIS IS SHOWN ON EXHIBITS C-2, C-3 AND C-4.
<br />3. FOR THE WEST AND EAST CELLS, THE OPERATOR WILL USE DRY MINING TECHNIQUES AND
<br />EXCAVATE MATERIAL BY BACKHOE, BULLDOZERS, AND SIMILAR EQUIPMENT. THE MINING FOR
<br />THESE PHASES WILL INVOLVE INSTALLATION OF A SLURRY WALL, DE -WATERING ACTIVE MINE
<br />AREAS AND PUMPING IN ACCORDANCE WITH THE DISCHARGE PERMIT.
<br />4. TOPSOIL AND OVERBURDEN STOCKPILES SHALL BE TEMPORARILY STORED IN THE AREAS
<br />SHOWN. THE STOCKPILES IN THE FLOODPLAIN SHALL BE ALIGNED PARALLEL TO THE FLOOD FLOW
<br />DIRECTION OF THE S. PLATTE RIVER, HAVE MAXIMUM HEIGHT OF 30', A MAXIMUM LENGTH OF
<br />300', MAXIMUM 3H: 1V SLOPES, AND A MINIMUM OF 100' BETWEEN STOCKPILES.
<br />5. OVERBURDEN AND TOPSOIL STOCKPILES ABOVE EXISTING GRADE, THAT ARE EXPECTED TO BE
<br />PRESENT FOR OVER 1 YEAR, WILL BE SEEDED WITH A TEMPORARY SEED MIX AS WEATHER
<br />PERMITS.
<br />6. OVERBURDEN AND TOPSOIL STOCKPILES MAY BE STORED IN THE BOTTOM OF THE MINING
<br />CELLS IN EAST AND WEST MINING AREAS AS LONG AS THE TOP OF THE STOCKPILES ARE BELOW
<br />THE PRE -MINING SURFACE ELEVATION.
<br />7. STOCKPILED TOPSOIL WILL BE SEGREGATED FROM OTHER SOIL.
<br />8. THE OPERATION WILL INVOLVE CONCURRENT MINING AND RECLAMATION WITH FINAL SLOPES
<br />BEING 3H: IV, AND PLACEMENT OF 6" TO 12" OF TOPSOIL ON ALL RECONSTRUCTED AREAS ABOVE
<br />THE PROPOSED HIGH WATER LEVEL OF THE FUTURE RESERVOIR; AND OTHER DISTURBED AREAS
<br />AS NECESSARY.
<br />9. CIVIL RESOURCES, LLC IS NOT RESPONSIBLE FOR SAFETY, IN, ON, OR ABOUT THE PROJECT
<br />SITE, NOR FOR COMPLIANCE BY THE APPROPRIATE PARTY OF ANY REGULATIONS THERETO.
<br />10. A MINIMUM OF TEN (10) FEET OF CLEARANCE FROM ANY EXISTING POWERLINE OR FUTURE
<br />POWERLINE SHALL BE MAINTAINED AT ALL TIMES AS OUTLINES BY STATE STATUES.
<br />11. UTILITIES SHOWN ON THIS PLAN WERE FIELD LOCATED AT THE TIME OF PLAN PREPARATION.
<br />FOR SAFETY, THE OPERATOR SHOULD LOCATE UTILITIES PRIOR TO SLURRY WALL CONSTRUCTION,
<br />OR MINING ACTIVITY.
<br />12. PRIOR TO DISTURBANCE OF ANY WATERS OF THE U.S. AGGREGATE INDUSTRIES, INC WILL
<br />GET APPROPRIATE APPROVALS FROM THE U.S. ARMY CORPS OF ENGINEERS.
<br />13. NO IRRIGATION DITCHES WILL BE DISTURBED. LATERALS THAT SERVE THE PROPERTY WILL
<br />BE REMOVED.
<br />14. THE MAXIMUM SLOPE ON EASTERN HIGHWALL EXCAVATIONS THAT ARE 400 FEET OR LESS
<br />FROM THE SOUTH PLATTE RIVER SHALL NOT EXCEED 3H: IV BETWEEN APRIL 1 AND SEPTEMBER 30.
<br />15. THE MINING LIMITS SHOWN HEREIN ASSUME SIDE SLOPE AND 3H: IV (EAST AND WEST
<br />AREAS) AS DESCRIBED IN THE SLOPE STABILITY AND SETBACK UPDATES MEMO (TETRA TECH, NOV
<br />8, 2019). DEVIATIONS FROM THE ASSUMPTIONS MADE IN THE MEMO IMPACT THE ALLOWABLE
<br />GEOTECHNICAL SETBACK. THIS MEMO DOES NOT DOCUMENT SETBACKS THAT ARE BASED ON
<br />MUTUAL AGREEMENTS OR ADAMS COUNTY REGULATIONS.
<br />Sheet List Table
<br />SHEET
<br />NUMBER
<br />SHEET TITLE
<br />C-1
<br />EXHIBIT C COVER SHEET & MINING NOTES
<br />C-2
<br />EXHIBIT C PRE -MINING PLAN WEST AREA
<br />C-3
<br />EXHIBIT C PRE -MINING EAST AREA
<br />C-4
<br />EXHIBIT C PRE -MINING PLAN WELD COUNTY CONVEYOR AREA
<br />C-5
<br />EXHIBIT C WEST AREA MINING PLAN
<br />C-6
<br />EXHIBIT C EAST AREA MINING PLAN
<br />C-7
<br />EXHIBIT C WELD COUNTY CONVEYOR AREA MINING PLAN
<br />C-8
<br />EXHIBIT C MINING PLAN DETAILS
<br />CERTIFICATION:
<br />THIS MAP WAS PREPARED BY CIVIL RESOURCES, LLC. IN
<br />COOPERATION WITH AGGREGATE INDUSTRIES-WCR, INC.
<br />AGGREGATE INDUSTRIES-WCR, INC. WILL KEEP THE DIVISION OF
<br />RECLAMATION, MINING, AND SAFETY INFORMED OF ANY CHANGES TO
<br />THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS
<br />AND FILE TECHNICAL REVISIONS OR AMENDMENT APPLICATIONS AS
<br />NECESSARY THROUGHOUT THE LIFE OF THE MINE.
<br />09/09/2021
<br />GARY LINDEN DATE
<br />CIVIL RESOURCES
<br />8308 COLORADO BLVD
<br />SUITE 200
<br />FIRESTONE, CO 80504
<br />303.833.1416
<br />WWW.CIVILRESOURCES.COM
<br />AGGREGATE INDUSTRIES
<br />1687 COLE BLVD, STE 300
<br />GOLDEN, COLORADO 80401
<br />214-213-7859(P)
<br />KIMBERLY DENNIS
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<br />I REVISIONS I
<br />DRAWN BY: CI DATE: AUGUST 21
<br />CHECKED BY: GL SCALE: AS NOTED
<br />AS NOTED
<br />JOB NO.: 297.001.09
<br />DWG NAME:
<br />C-1 EXHIBIT C EAST AREA RECLAMATION PLAN COVER.dwq
<br />EXHIBIT C COVER
<br />SHEET & MINING
<br />NOTES
<br />SHEET:
<br />Know what's below.
<br />Call before you dig. C r 1
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