2023-01-09_REVISION - M2021052 (2)

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Rifle Gravel Pit#1 °gnuary 2023 Graphic Scale o MINING PROGRESSION E I ff N LEGEND 0 100 200 400 04 1. SLOPE OF THE MINING HEADWALL DURING EXCAVATION SHALL BE AT THE ANGLE OF REPOSE, EX' WETLANDS ass EXPECTED TO BE 3:1 BUT SHALL NOT EXCEED 2:1. EX. WETLAND AND BUFFER In U.S.Feet:1'=200' CO 2. WETLAND SLOPE AREA IS A MIN. 6 FT AROUND WATER SURFACE AT 10% SLOPE ®EX. GRAVEL 1 3. WETLAND SLOPE AREAS SHALL BE RECLAIMED WITH STOCKPILED TOPSOIL AND REVEGETATFD WITH `'�••••.-.•Si� PROP. PAVEMENT b U� o, � THE WETLAND SEED AND PLANTING MIX SHOWN IN TABLE 2 ON SHEET 2. ----PROPERTY BOUNDARY •ate 4. SEE TYPICAL MINING STRATA BASED ON GEOTECH BORING LOGS IN DETAIL 1/1 1. —»+ 100 YR. FLOODPLAIN �`�o 5. TEMPORARY WET GRAVEL STOCKPILES WILL BE FORMED NEAR THE EXCAVATION BOUNDARY THEN SURFACE WATER a 3 MOVED TO THE STOCKPILING AREA DEPICTED ON THIS SHEET AFTER THEY DRY OUT. co 6 IN TOPSOIL- FOR `='- , -___ .,.•" :' ' -': ____ 1 r 5 FT REVEGETATION WETLAND SLOPE ari �� I '•--• EA 30% COMPLETE, AP ROX.15,363R5 \ --7� 0 INSTALL STRAW WATTLE - (SOLID GREEN HATCH) "' ----- r _ c �' ?.• AT OUTER TOE OF BERM a ',ram•—.,.._'�... r i SEE DETAIL H/10 pt q 4 i' OVERBURDEN �� _ d• USED FOR BERMS _? - AFFECTED LANDS=,c- iq LbA COMPLETE v A.K.A. LIMITS OF DISTURBED AREA) • i,_ MIN. 35-FT AWAY FROM EX. 41 L SEE PLAN GRADE t ti` L WETLAND BOUNDARIES 0. WETLAND NOTE: COMPACT OVERBURDEN IN MAX. 8 INCH LIFTS v SLOPE AREA TO 95% PROCTOR DENSITY, ROUGHEN SURFACE PER - \1, .•p o DETAIL G/10, PRIOR TO APPLYING TOPSOIL AND RE'VEG. � , SECTION AAA •e _ A BERM AND REVEGETATION DETAIL <; a s N.T.S I + 6 r.. ..' •rr• a \ g TOP OF BERM—� y v 11 a a ; SEE DETAILS A/6 AND x TEMPORARY ( � ON THIS SHEET .. C 4 ,X` O 7 WET GRAVEL (pH CU a ;x STOCKPILE C/6 `� I U L '.; tip- r f n -T TI EARTHEN BERM - ,.�•-y 1_• 0 > > ) I ;START MINING ON NORTH SIDE OF CHANNEL, TURN (SOLID GRAY HATCH) _ "':,THE CHANNEL INTO THE NEWLY EXCAVATED PIT, Cll w gZ •IF' ar / t ( 1 CONTINUE MINING CLOCKWISE THROUGH THE AREA. MINE EXPANSION WATER DRAINS FROM GRAVEL STOCKPILING AREA r ,,- " STOCKPILE OVERLAND AND :ISg$0 0.57 ACRES (25,000 SF) --- APPROX. 433 LF (9,873 SF) OF CHANNEL MINING INFILTRATES TO SUBSURFACE t \�� r INCORPORATED INTO WET MINING FOOTPRINT. �} HEADWALL �00 v R i. MAINTAIN EX. CROSSING TO SECTION B—B OPERATIONS AREA FOR GRAVEL PROCESSING, FUEL ALLOW VEHICLE ACCESS TO,- o STORAGE, PARKING, OFFICE, AND SALES AREA J MINING AREA o 7 n 8 TYPICAL AC`IM MINING I: APPROX. 1.93 ACRES_ N� == Q i S N.TS. SEE DETAIL J/12 FOR TYPICAL PROCESSING LAYOUT r-' o• r, A ( ' SEE SHEET K/13 FOR TYPICAL SPILL PREVENTION CONTROL AND CONTAINMENT FUEL STORAGE DETAILS' \ o„ r �a�•' ,- y • j` E BERM, SEE DETAIL A/6 5-8' 4EX. S _ 3RDE i WETLAND ( . \ J :•, "•. .- 1 SLOPE AREA 5 � 'I; 0b n tots-34t tt2 Drawn by RPF - n '' %':-.•: :�,'-=EX. GAS LINE Data. 0194i2023 z : - TAIL'WATER rj t (OWNED BY UP.SA RESOURCES) rJc A F PE kaF O1 6 CHANNEL .. •\ �� ..: \., Fie: RiflaPd-Eetnbits N ( \ LOCATION �, EX. NON-POTABLE WATER Tn1a NOTES: WETLAND SLOPE AREA WILL BE \ VARIES ! TK \ OWNED BY URSA RESOURCES) Mining Progression RECLAIMED WITH STOChP LED TOPSOIL 5i" ' / ( AND REVEGETATED PER TABLE 2 ON �-EX. WETLANDS i 1 SHEET 2 BOUNDARY a \ Exhibit-30% m � 1, SECTION C—C _ ' hx n ✓` —MINE ENTRANCE Ow No _C' RECLNMFQ___-._._ (LAT, LONG) _ (39.533805', 107.692804') 6 N.T.S. - SEE ALSO SECTION F/8, SHT 8 {�•� p at } , ,•-, or 13 - Figure 9. Exhibit C4 - 30% Mining Map (See Attachment A for full drawing set) 21