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Rifle Gravel Pit #1 January 2023
<br /> EARTHWORK QUANTITY ESTIMATE TABLE
<br /> 0
<br /> FEATURE ACRES ISO.FT.) I CU.YD. lCL[r/FIL ]YPE1 I NOTES 1 ag o
<br /> PROPERTY AREA----------------58.70 (2,557,174) 1- N/A -------- I PROPERTY BOUNDARY SURVEYED BY SGM, NOTED IN A SURVEY MAP DATED 12/13/2019. SEE SHEET 4 FOR AN EXISTING CONDITIONS MAP.
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<br /> PERMITTED AREA19� -- ------ ---------------- -63 (855,209) 1N/A I BOUNDARY ALL AFFECTED LANDS AND AN ISOLATED 0_63 ACRE (27,386 SF)-WETLAND AREA THAT WILL NOT AFFECTED_--- ��
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<br /> AFFECTED LANDS 19.00 (B27,640) N/A I ALLOWABLE AREA FOR DISTURBANCE AND MINING RELATED ACTIVITIES (ALSO SHOWN AS "LDA" IN PLANS). SEE SHEET 5. 8
<br /> (A.KA. LIMITS OF DISTURBED AREA) (n a
<br /> CdERBURDEN REWC 1.18 (486,834) 54,111 CUT, SOIL) AVERAGE DEPTH OF CUT ASSUMED AT 3 FT. GEOTECHNICAL ENGINEER'S BORINGS SHOW OVERBURDEN DEPTH 4AP,IES 1 - 5 FT ACROSS SITE fq(/)p
<br /> AND APPROXIMATELY 0.5 FT OF THE OVERBURDEN COMPRISED OF TOPSOIL. MUCH OF THIS AREA WILL BE MINED BUT THE WETLAND SLOPE , E
<br /> AREA WILL BE RECLAIMED PER GARFELD COUNTY LUDC 7-1002.H.2. ( 3 LO LO CI
<br /> BERMS 2.87 (124.943) 13,524 ;FILL, SO BERMS TO PROVIDE NOISE AND VISUAL BARRIER. SEE DETAIL A/6 ON SH=FT 6. THIS WILL BE RECLAIMED AS AN UPLANDS AREA. CO C)
<br /> CPEPA?ICNS AREA 1.86 (80,9671 2,999 FIL_, C'L E) SCALE HOUSE, FUEL STORAGE, PARKING, AND OFFICE. CONSTRUCTED AS OF CDOT CLASS 6 ROAD BASE It,!
<br /> MAX.. 6" LIFTS AND COMPACTED TO 95% PROCTOR DENSITY.
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<br /> GRAVEL EXTRACTION AREA 10.43 (454,154) I 292,810 (CUT, GRAVEL) I GRAVEL EXTRACTION AREA WITHIN THE AFFECTED LANDS, ASSIIA ' A 3:1 SLOPE FOR ESTIMATION OF GRAVEL QUANTITIES.
<br /> u (100% COMPLETE)
<br /> c -30. COMPLETE VOL 4.78 AC (208.223 SF) -88,000 CY (CUT, GRAVEL) MINED AREA AND VOLUME, ESTIMATE AT 30% COMPLETE. SEE SHEET 6.
<br /> -60% CO' =i- `.'OL 6.83 AC (297,626 SF) -140,000 CY (CUT, "AVFI MINED AREA AND UME, ES1 V=.I- AT 60% COMPLETE. SEE SHEET 7.
<br /> a --------- --------------------------------------------------------------------
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<br /> ROAD BASE FOR WORKING AREAS 13.03 (567,801) 1 5,255 (FILL, CDOT CL 6) 1 TOTAL AMOUNT OF ROAD BASE (MIN. 3" THICK) REQUIRED TO ESTABLISH WORKING SURFACE FOLLOWING OVERBURDEN REMOVAL IN THE
<br /> WITHIN AFFECTED LANDS AFFECTED LANDS. QUANTITY ESTIMATED FROM REQUIRED AREA FOR OPERATIONS AREA PLUS OVERBURDEN REMOVAL AREA.
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<br /> UPLAND RECLAMATION AREA 6.50 (283,052) 1 5,243 (FILL, TOPSOIL) I UPLAND DISTURBANCE (PER GARFlELD COUNTY LUDC 7-1002.H.2) REVEGETATED WITH UPLAND SEED AND PLANTING MIX (TABLE 1).
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<br /> N WETLAND RECLAMATION AREA 0.70 (30.588) I 566 CY (FILL, TOPSOIL) I POND WETLAND SLOPE RECLAIMED WITH 0.5 FT OF TOPSOIL GENERATED FROM OVERBURDEN REMOVAL WITHIN AFFECTED LAND
<br /> (PER GARFlELD COUNTY LUDC 7-1002.H.2) AND REVEGETATED WITH WETLAND SEED AND PLATING MIX (TABLE 2).
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<br /> o RECLAIMED POND SURFACE AREA 9.55 (416,162) I N/A I POND WATER SURFACE AREA AFTER COMPLETION AND RECLAMATION OF GRAVEL MINE IN AFFECTED AREA. �$
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<br /> CL
<br /> 3 EROSION CONTROL NOTES: a
<br /> RECLAMATION AND REVEGETATION:
<br /> Y 1. THE RIFLE PIT LOCATION WILL HAVE A STORMWATER PERMIT THAT WILL BE IMPLEMENTED DURING MINING IHC SCOTT, INC. >
<br /> 1. ALL RECLAMATION SHALL PROCEED ACCORDING TO GARFlELD COUNTY LUDC SECTION 7-1002.H "GRAVEL MINE WILL FOLLOW ALL REQUIRED PERMIT GUIDELINES AND REGULATIONS. C6
<br /> EXTRACTION - RECLAMATION." 1.1. WEEKLY AND MONTHLY INSPECTIONS WILL BE CONDUCTED PER PERMIT REQUIREMENTS; INSPECTION DOCUMENTATION
<br /> WILL ALWAYS BE MAINTAINED AND AVAILABLE AT THE ON-SITE SCALE HOUSE.
<br /> Cr 2. SEEDING SHOULD OCCUR IN LATE-FALL TO PREVENT SEEDS FROM GERMINATING IN SUMMER/EARLY-FALL AND
<br /> DESICCATING, AS WELL AS TO PREVENT SEEDS FROM FREEZING IN WINTER. 2. EARTHEN BERMS AROUND THE PROPERTY, AS IDENTIFIED ON THE PLANS, WILL BE BUILT PER DETAIL A/6 ON SHEET 6, 0
<br /> COMPACTED IN PLACE, AND REVEGETATED AS THEY ARE CONSTRUCTED. _
<br /> 3. DRILL SEEDING WILL BE UTILIZED THROUGHOUT THE PROJECT LIFETIME, EXCEPT WHERE HAND-PLACEMENT IS 2.1. THE BERMS WILL BE SEEDED AFTER CONSTRUCTION ACCORDING TO THE UPLAND PLANTING AND SEED MIX (TABLE 1). _
<br /> NECESSARY (E.G. CONTAINERIZED WETLAND STOCK). BROADCAST SEEDING (OR HYDROSEEDING) WILL BE USED ONLY 2.2. THE BERMS WILL ALSO CONTAIN ALL STORM RUNOFF WITHIN ACTIVE MINIM AREAS.
<br /> AS NECESSARY FOR SPOT COVERAGE IF DRILL-SEEDING IS IMPRACTICAL IN ISOLATED AREAS.
<br /> m 3. FUEL STORED ON-SITE WILL BE CONTAINED IN A DOUBLE-WALL TANK IN ACCORDANCE WITH STATE REQUIREMENTS. THESE
<br /> 4. SEEDING SHOULD BE APPLIED IN CONCERT WITH A STERILIZED HYDROMULCH TO STABILIZE SOIL SURFACES UNTIL STANDARDS WILL MEET THOSE IN THE SITE-SPECIFIC SPCC PLAN TO BE DEVELOPED AND STAMPED BY A LICENSED
<br /> GERMINATION COMMENCES WHILE REDUCING WEED ESTABLISHMENT. PROFESSIONAL ENGINEER.
<br /> i 3.1. THE TANKS AND STORAGE AREA WILL BE INSPECTED WEEKLY AND OBSERVATIONS LOGGED IN ACCORDANCE WITH STATE a 0. it u
<br /> 5. SEEDING MATERIAL AND APPUCAT10N RATES TO BE USED FOR RECLAMATION SHALL BE AS LISTED IN TABLES 1 AND REGULATIONS.
<br /> 2 FOR DRILL SEEDING. APPLICATION RATES SHOULD BE DOUBLED FOR BROADCAST OR HYDROSEEDING SEEDING. 3.2. SEE DETAIL K/13 ON SHEET 13 FOR A TYPICAL DETAIL OF A SPILL PREVENTION AND CONTAMINATION CONTROL (SPCC) 04
<br /> N
<br /> CONCRETE PAD.
<br /> m 0
<br /> z:
<br /> ' TABLE 1 - UPLAND SEEDING AND PLANTING MIX s V m 0 2
<br /> 8 X COMMON NAME SCIENTIFIC NAME VARIETY FORM PLS (LBS/ACRE)• ESTIMATED CONSTRUCTION SCHEDULE y
<br /> 20 ORCHARD GRASS DACTYL1S GLOMERATA AS LOCALLY AVAILABLE BUNCH 3.6 E ® m m 4
<br /> g 20 WESTERN WHEATGRASS PASCOPYRUM SMITHII AS LOCALLY AVAILABLE SOD-FORMING 3.6 MARCH 2O23 - START OF SITE PREP (LDA STAKING, OVERBURDEN REMOVAL, AND BERM CONSTRUCTION).
<br /> i 20 TIMOTHY PHLEUM PRATENSE AS LOCALLY AVAILABLE BUNCH 3.5 -
<br /> Y 40 MEADOW BROME BROMUS BIEBERSTEINII AS LOCALLY AVAILABLE BUNCH 7z APRIL 2023 - START OF MINING OPERATIONS AND CONCURRENT RECLAMATION AS MINING PROGRESSES. kb'
<br /> s
<br /> 002
<br /> TABLE 2 - WETLAND SEEDING AND PLANTING MIX
<br /> DECEMBER 2026 TO 2028 - END OF MINING OPERATIONS do RECLAMATION (LIFE OF MINE ESTIMATED AT 3-5 YEARS). 6�; hy- zo193a PPF
<br /> Die 011)412023 t5
<br /> e
<br /> a
<br /> o) X COMMON NAME SCIENTIFIC NAME VARIETY FORM PLS (LB CRE)• PPF
<br /> o -- SPEARLEAF RAI381THRUSH ERICAMERIA UNIFODUS WILDLAND COLLECTED SEED SHRUB 0.05 File Rifled-Notes
<br /> -- COYOTE WILLOW SAUX EXIGUA CONTAINERIZED STOCK (60 IN') SHRUB 1 CONTAINER Title
<br /> a PER 5 SOFT.
<br /> o -- BALTIC RUSH JUNCUS BALTICUS AS LOCALLY AVAILABLE SOD-FORMING 0.5 Notes&Earthwork
<br /> j -- NEBRASKA SEDGE CARER NEBRASCENSIS AS LOCALLY AVAILABLE SOD-FORMING 1.6
<br /> -- BEAKED SEDGE CARER ULTRICULATA CONTAINERIZED STOCK (10 iW) RHIZOMATOUS 1 CONTAINER Quantity Estimates
<br /> u PER 3 SO. FT.
<br /> 2 -- CLUSTERED FIELD SEDGE CARER PRAEGRACIUS AS LOCALLY AVAILABLE SOD-FORMING 1.2
<br /> n -- CHABRMAKER'S BULRUSH SCHOENOPLECTUS AMERICANUS CONTAINERIZED STOCK (60 IMF RHQOMATOUS 1 CONTAINER Dwg No
<br /> m PER 3 SQ. FT.
<br /> E 2
<br /> E
<br /> m
<br /> - 13
<br /> Figure 15. Exhibit E2 - Earthwork Quantities and Reclamation Seeding and Planting Information
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