2023-07-19_REVISION - M2021052 (4)

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Rifle Gravel Pit #1 July 2023 MINING PROGRESSION EXHIBITNOTES: " ' Ex wETLANOS Graphic Scale . p D 100 200 400 Ex WETLA AND BUFFER ND N o 1. SLOPE OF THE MINING HEADWALL DURING EXCAVATION SHALL BE AT THE ANGLE OF REPOSE, PROF' GRAVEL _ 0 In U.S.Feet:1•=200" EXPECTED TO BE 3:1 CO———PROPERTY BOUNDARY 2. GREENBELT AREA IS A MIN. 6 FT AROUND WATER SURFACE AT 20% MAX SLOPE 100 YR. FLOOOPLAN �00 um—PROP 5-FOOT CONTOUR � � � 3, GREENBELT AREAS SHALL BE RECLAIMED WITH STOCKPILED TOPSOIL AND REVEGETATEO WITH THE PROP I-FOOT CONTOUR CD WETLAND SEED AND PLANTING MIX SHOWN IN TABLE 2 ON SHEET 2. —_—UMIT OF DIST AREA/PERMITTED AREA 2 X CLo U 4. SEE TYPICAL MINING STRATA BASED ON GEOTECH BORING LOGS IN DETAIL 1/11, NON-WETLAND 03u)6.5 • PIEZOMETER WELL 5. TEMPORARY WET GRAVEL STOCKPILES WILL BE FORMED NEAR THE EXCAVATION BOUNDARY THEN N MOVED TO THE STOCKPILING AREA DEPICTED ON THIS SHEET AFTER THEY DRY OUT. --- — �"S obi rn 6 IN TOPSOIL FOR �r 5 FT REVEGETATION ►, J GREENBELT AREA 30% COMPLETE. APPROX. 15,363 SF INSTALL STRAW WATTLE r (HEAVY GREEN LINE) AT OUTER TOE OF BERM SEE DETAIL H/10 s"`"• " s � {X. OVERBURD€N �. •.,, .- _,; �" ., � ..`_Y -30%r' USED FOR BERMS �� AFFECTED LANDS + I ETE EX. { A-KA LIMITS OF 04STUR$ED AREA) GDE MIN. 35--FT AWAY FROM Ex. SEE PLAN • WETLAND BOUNDARIES ` r GREENBELT NOL, COMPACT OVERBURDEN IN MAX, 8 INCH LIFTS TO 95% PROCTOR DENSITY. ROUGHEN SURFACE PER START MINING ON NORTH SIDE OF CHANNEL, TURN AREA 1 DETAIL G/tO, PRIOR TO APPLYING TOPSOIL AND REVEL. THE CHANNEL INTO THE NEWLY EXCAVATED PIT, MINING CLOCKWISE THROUGH THE AREA. SECTION A—A APPROX, 433 LF (9,873 SF) OF CHANNEL '>#! ° :• A BERM CONSTRUCTION AND REVEGETATION DETAIL INCaRPORATEO INTO WET MINING FOOTPRINT. -f� � N.T 5 ( V #I `� TOP OF BERM ��_, ': "' — r�•H.. dam• r I I' • SEE DETAILS A/6 AND A6 r' "♦ �`♦ I r TEMPORARY is • — ` D I p t+ C/6 ON THIS SHEET�. WET GRAVEL .qI •I ":• '•�- - STOCKPILE II A I I . TEMP. WET GRAVEL ,a" 44U11 jl STOCKPILE �� t TEMPORARY OVERBURDEN' >^ ` N (SOLID GRAY HATCH) $ I SOIL STOCKPILE • , ,' ` `I •P• STRAW WATTLES (-1,700 LF) Y. ♦ — U OR STABUZIEO MINE EXPANSION WATER DRAINS FROM GRAVEL II PER SWMP - STOCKPILE OVERLAND AND #� + }� �4 ,. `tS• t1 MINING INFILTRATES TO SUBSURFACE tl �� ff -' til` TEMP TOPSOILf.. m m m - ' HEADWALL ILA STOCKPILE m Q a. EARTHEN BERM A t STRAW WATTLE OPERATIONS AREA FOR GRAVEL PROCESSING, FUEL (�t000 LF) OR SECTION B-B STORAGE, PARKING, OFFICE, TOILETS, AND SALES AREA PROCESSING STABILIZE PER 8 TYPICALACTIVE MINING APPROX. 1.86 ACRES AREA SWMP " - • {y N.T.S. SEE SHEET K/13 FOR TYPICAL SPILL PREVENTION CONTROL AND CONTAINMENT FUEL STORAGE DETAILS a s BERM. SEE DETAIL A/6 I 00 z 'fir t - - a .e. „422 • • SI f� E'EX- GRADE ; tl STOCKPILING AREA ! y 'MAINTAIN EX. CROSSING TO 1 3 0.54 ACRES (23,500 SF) 1S ALLOW VEHICLE ACCESS TO tl ll 1 MINING AREA GREENBELT kl , aarna. z�v4.saucot i y o,awR�• acs ♦ AREA t l TOP5011 STOCKPILING AREA . " Y LINEn�r�Arxta TTAILWATER s I 0,12 ACRES (5.200 SF) ' _\ II (OWNED BY URSA RESOURCES) : any PE Asf CHANNEL I FOR S�Cy KEPT TOPSOIL x ,x iG 1 LOCATION NOTES: GREENBELT AREA VALE BE VARIES `i # HAUL ROAD EX. NON-POTABLE WATER rug RECLAIMED WITH STOCKPILED TOPSOIL i - �_ Ay..r'"" _ {I y (OWNED BY URSA RESOURCES) Phase 1-3 Mining AND REVEGETATED PER TABLE 2 ON EX. WETLANDS a1 FUEL STORAGE ,W x: Progression SHEET 2 BOUNDARY WITH SPCC , _ Exhibit-3 SECTION C—C ".t�L" W°' MINE ENTRANCE RECLAIMED �,✓ ` "l`ryri. c SCALE. SCALE HOUSE (LAT. LONG) _ (39.533805% -107.692804') N.T.S. - SEE ALSO SECTION F/B, SKT 6 �..► ! '-^ dt TOILETS 2 t` sat; 16 Figure 9. Exhibit C4— Phase 1, Phase 2, and Phase 3 30% Mining Map RECEIVED JUL 19 2023 18 Colorado Division of Reclamation, Mining and Saftey