2023-01-09_REVISION - M2021052 (18)

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EARTHWORK QUANTITY ESTIMATE TABLE CD CD CN� FEATURE ACRES (SO t`f) I CU YD (CUT/FILL TYPE) I NOTES W PROPERTY AREA 58.70 (2,557,174) I 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. U)CO ---------------------------------------------------------------------------------------------------------------------------------------------------------- PERMITTED AREA 19.63 (855,209) 1 N/A I BOUNDARY CONTAINING ALL AFFECTED LANDS AND AN ISOLATED 0.63 ACRE (27,386 SF) WETLAND AREA THAT WILL NOT BE AFFECTED a� ---------------------------------------------------------------------------------------------------------------------------------------------------------- cn AFFECTED LANDS 19.00 (827,640) I N/A I ALLOWABLE AREA FOR DISTURBANCE AND MINING RELATED ACTIVITIES (ALSO SHOWN AS "LDA" IN PLANS). SEE SHEET 5. L O (A.K.A. LIMITS OF DISTURBED AREA) x_ Q v c> OVERBURDEN REMOVAL 11.18 (486,834) 54,111 (CUT, SOIL) AVERAGE DEPTH OF CUT ASSUMED AT 3 FT. GEOTECHNICAL ENGINEER'S BORINGS SHOW OVERBURDEN DEPTH VARIES 1 - 5 FT ACROSS SITE Cn o AND APPROXIMATELY 0.5 FT OF THE OVERBURDEN COMPRISED OF TOPSOIL. MUCH OF THIS AREA WILL BE MINED BUT THE WETLAND SLOPE N c AREA WILL BE RECLAIMED PER GARFIELD COUNTY LUDC 7-1002.H.2 - BERMS 2.87 (124,943) 1 13,524 (FILL, SOIL) BERMS TO PROVIDE NOISE AND VISUAL BARRIER. SEE DETAIL A/6 ON SHEET 6. THIS WILL BE RECLAIMED AS AN UPLANDS AREA. CID o OPERATIONS AREA 1.86 (80,967) 2,999 (FILL, CL 6) SCALE HOUSE, FUEL STORAGE, PARKING, AND OFFICE. CONSTRUCTED AS 1 FT OF CDOT CLASS 6 ROAD BASE IN MAX. 6" LIFTS AND COMPACTED TO 95% PROCTOR DENSITY. ---------------------------------------------------------------------------------------------------------------------------------------------------------- GRAVEL EXTRACTION AREA 10.43 (454,154) I 292,810 (CUT, GRAVEL) GRAVEL EXTRACTION AREA WITHIN THE AFFECTED LANDS, ASSUMING A 3:1 SLOPE FOR ESTIMATION OF GRAVEL QUANTITIES. in (100% COMPLETE) o -30% COMPLETE VOL 4.78 AC (208,223 SF) -88,000 CY (CUT, GRAVEL) I MINED AREA AND VOLUME, ESTIMATE AT 30% COMPLETE. SEE SHEET 6. -60% COMPLETE VOL 6.83 AC (297,626 SF) -140,000 CY (CUT, GRAVEL) I MINED AREA AND VOLUME, ESTIMATE AT 60% COMPLETE. SEE SHEET 7. ---------------------------------------------------------------------------------------------------------------------------------------------------------- M ROAD BASE FOR WORKING AREAS 13.03 (567,801) 5,255 (FILL, COOT CL 6) 1 TOTAL AMOUNT OF ROAD BASE (MIN. 3" THICK) REQUIRED TO ESTABLISH WORKING SURFACE FOLLOWING OVERBURDEN REMOVAL IN THE Q WITHIN AFFECTED LANDS AFFECTED LANDS. QUANTITY ESTIMATED FROM REQUIRED AREA FOR OPERATIONS AREA PLUS OVERBURDEN REMOVAL AREA. 11) ---------------------------------------------------------------------------------------------------------------------------------------------------------- UPLAND RECLAMATION AREA 6.50 (283,052) 1 5,243 (FILL, TOPSOIL) I UPLAND DISTURBANCE (PER GARFIELD COUNTY LUDC 7-1002.H.2) REVEGETATED WITH UPLAND SEED AND PLANTING MIX (TABLE 1). " ---------------------------------------------------------------------------------------------------------------------------------------------------------- 0 WETLAND RECLAMATION AREA 0.70 (30,588) 566 CY (FILL, TOPSOIL) 1 POND WETLAND SLOPE RECLAIMED WITH 0.5 FT OF TOPSOIL GENERATED FROM OVERBURDEN REMOVAL WITHIN AFFECTED LAND (PER GARFIELD COUNTY LUDC 7-1002.H.2) AND REVEGETATED WITH WETLAND SEED AND PLATING MIX (TABLE 2). ---------------------------------------------------------------------------------------------------------------------------------------------------------- °_ RECLAIMED POND SURFACE AREA 9.55 (416,162) I N/A POND WATER SURFACE AREA AFTER COMPLETION AND RECLAMATION OF GRAVEL MINE IN AFFECTED AREA. �$ ° ---------------------------------------------------------------------------------------------------------------------------------------------------------- ++ U N RECLAMATION AND REVEGETATION: EROSION CONTROL NOTES: z 1. ALL RECLAMATION SHALL PROCEED ACCORDING TO GARFIELD COUNTY LUDC SECTION 7-1002.H "GRAVEL MINE 1. THE RIFLE PIT LOCATION WILL HAVE A STORMWATER PERMIT THAT WILL BE IMPLEMENTED DURING MINING IHC SCOTT, INC. � > WILL FOLLOW ALL REQUIRED PERMIT GUIDELINES AND REGULATIONS. EXTRACTION - RECLAMATION." 1.1. WEEKLY AND MONTHLY INSPECTIONS WILL BE CONDUCTED PER PERMIT REQUIREMENTS; INSPECTION DOCUMENTATION U WILL ALWAYS BE MAINTAINED AND AVAILABLE AT THE ON-SITE SCALE HOUSE. ( 2. SEEDING SHOULD OCCUR IN LATE-FALL To PREVENT SEEDS FROM GERMINATING IN SUMMER/EARLY-FALL AND 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, () COMPACTED IN PLACE, AND REVEGETATED AS THEY ARE CONSTRUCTED. _ 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). _ 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 MINING AREAS. , AS NECESSARY FOR SPOT COVERAGE IF DRILL-SEEDING IS IMPRACTICAL IN ISOLATED AREAS. 3. FUEL STORED ON-SITE WILL BE CONTAINED IN A DOUBLE-WALL TANK IN ACCORDANCE WITH STATE REQUIREMENTS. THESE 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 GERMINATION COMMENCES WHILE REDUCING WEED ESTABLISHMENT. PROFESSIONAL ENGINEER. a 3.1. THE TANKS AND STORAGE AREA WILL BE INSPECTED WEEKLY AND OBSERVATIONS LOGGED IN ACCORDANCE WITH STATE m 5. SEEDING MATERIAL AND APPLICATION RATES TO BE USED FOR RECLAMATION SHALL BE AS LISTED IN TABLES 1 AND REGULATIONS. N N N i 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) a CONCRETE PAD. o 't 00 00 I TABLE 1 - UPLAND SEEDING AND PLANTING MIX o ;, m M % COMMON NAME SCIENTIFIC NAME VARIETY FORM PLS (LBS/ACRE)• ESTIMATED CONSTRUCTION SCHEDULE , .N o o z N N 20 ORCHARD GRASS DACTYLIS GLOMERATA AS LOCALLY AVAILABLE BUNCH 3.6 E 0 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). FDrawn 20 TIMOTHY PHLEUM PRATENSE AS LOCALLY AVAILABLE BUNCH 3.6 40 MEADOW BROME BROMUS BIEBERSTEINII AS LOCALLY AVAILABLE BUNCH 7 2APRIL 2023 - START OF MINING OPERATIONS AND CONCURRENT RECLAMATION AS MINING PROGRESSES. Job DECEMBER 2026 TO 2028 - END OF MINING OPERATIONS & RECLAMATION (LIFE OF MINE ESTIMATED AT 3-5 YEARS). ob 2o1s-341BoPF2 TABLE 2 - WETLAND SEEDING AND PLANTING MIX 01/04/2023 % COMMON NAME SCIENTIFIC NAME VARIETY FORM PLS (LBS/ACRE)• ABF PE RPF a - SPEARLEAF RABBrrBRUSH ERICAMERIA LINIFOLIUS WILDLAND COLLECTED SEED SHRUB 0.05 File RiflePit-Notes j -- COYOTE WILLOW SAUX EXIGUA CONTAINERIZED STOCK (60 IN3) SHRUB 1 CONTAINER Title: rn PER 5 SQ.FT. o -- BALTIC RUSH JUNCUS BALTICUS AS LOCALLY AVAILABLE SOD-FORMING 0.6 Notes & Earthwork -- NEBRASKA SEDGE CAREX NEBRASCENSIS AS LOCALLY AVAILABLE SOD-FORMING 1.6 -- BEAKED SEDGE CAREX ULTRICULATA CONTAINERIZED STOCK (10 IN3) RHIZOMATOUS 1 CONTAINER Quantity Estimates PER 3 SQ. FT. 2 - CLUSTERED FIELD SEDGE CAREX PRAEGRACIUS AS LOCALLY AVAILABLE SOD-FORMING 1.2 j -- CHAIRMAKER'S BULRUSH SCHOENOPLECTUS AMERICANUS CONTAINERIZED STOCK (60 IN3) RHIZOMATOUS 1 CONTAINER Dwg No. PER 3 SQ. FT. E 2 rn Or 13