2011-09-30_PERMIT FILE - C1980007A (9)

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V ,>' CLEAR WATER BERM - WITH DITCH CENTERLINE SEDIMENT DITCH (TYP.) - � . — - -'-- " -- - �' : , �',\ \•. , ' •_ - . 1 PLAN: DRAINAGE PLAN o0oo UNDERDRAIN --• �r.� •,,, — �!. - ADVANCE, AHEAD OF WORKING PAD. _ .'' ' - /; -' - I /�✓_~ `APPROXIMATE UNDERDRAIN LOCATION (BELOW REFUSE) REFUSE PILE WORKING PAD PLACE TI OVER ROCK OR REPORT WAS ITPREPARED.BV ME OR UNDER My DIRECT swErHrsloN AND Twa I AM A ouLr LICENSED PROFCSSIO hL ENGINEER UNDER THE uws � SK'.NATuR, PRIOR TO o PLACING G REFUSE OVER ADJUST AS NECESSARY PLACE GEOTEXTILE OVER ROCK DRAINAGE ROCK WHEN REFUSE PILE WORKING PAD IS RAISED. TO SLOPE DITCH FOR PRIOR TO PLACING REFUSE OVER - -'� TEMPORARY WORKING PAD / ' - SEDIMENT DITCH POSITIVE DRAINAGE DRAINAGE ROCK WHEN REFUSE MOUNTAIN COAL COMPANY, L.L.C. SOMERSET. COLORADO RPE EAST PERMIT DRAWINGS WEST ELK MINE UAHH rKVJt%,I NO. Os 6-1003 1.5' MAX. PILE WORKING PAD IS RAISED. REFUSE PILE WORKING PAD __4 -_ _• - ~ __ =_`` ' - \• �,�� ' - - ' •'STRIP AREA AS NECESSARY _ - - - FOR REFUSE ADVANCEMENT SURFACE ' ' t EL. VARIES ororn - - \\ � - - •• "- " -' - TEMPORARY CLEARWATER • • - DIVERSION DITCH: ADVANCE FOR DRAINAGE AHEAD OF PREPARED WORKING PAD AND UNDERDRAIN AREA EL. VARIES MAINTAIN 1.0% MIN., �� FOR DRAINAGE 1.5% MAX. SLOPE MAINTAIN 1.0% MIN., o0oo UNDERDRAIN --• �r.� •,,, — �!. - ADVANCE, AHEAD OF WORKING PAD. _ .'' ' - /; -' - I /�✓_~ `APPROXIMATE UNDERDRAIN LOCATION (BELOW REFUSE) REFUSE PILE WORKING PAD PLACE TI OVER ROCK OR REPORT WAS ITPREPARED.BV ME OR UNDER My DIRECT swErHrsloN AND Twa I AM A ouLr LICENSED PROFCSSIO hL ENGINEER UNDER THE uws � SK'.NATuR, PRIOR TO o PLACING G REFUSE OVER ADJUST AS NECESSARY PLACE GEOTEXTILE OVER ROCK DRAINAGE ROCK WHEN REFUSE PILE WORKING PAD IS RAISED. TO SLOPE DITCH FOR PRIOR TO PLACING REFUSE OVER / scale Date POSITIVE DRAINAGE DRAINAGE ROCK WHEN REFUSE MOUNTAIN COAL COMPANY, L.L.C. SOMERSET. COLORADO RPE EAST PERMIT DRAWINGS WEST ELK MINE UAHH rKVJt%,I NO. Os 6-1003 1.5' MAX. PILE WORKING PAD IS RAISED. -� STRIPPED EXISTING 69UU N I I 1 • (TYP) SURFACE ' ' t EL. VARIES ororn MRP CLIENT PROJECT No. FOR DRAINAGE EL. VARIES MAINTAIN 1.0% MIN., �� FOR DRAINAGE 1.5% MAX. SLOPE MAINTAIN 1.0% MIN., a 2.0% MAX. SLOPE DRAINAGE ROCK � � PTS 1/4" - 6" / / � ' DRAINAGE ROCK / PRNTED NAME PHILIP B SOLSE PATE 07/21/2011 REG. No, ±0864 - STRIPPED EXISTING SURFACE A /2i SECTION: TEMPORARY WORKING PAD SEDIMENT DITCH 3 SECTION: TEMPORARY CLEARWATER DIVERSION DITCH - NOT TO SCALE I E - NOT TO SCALE UNDISTURBED EXISTING SURFACE 0 0 100 200 I I I SCALE IN FEET -- -- EXISTING MJR CONTOUR -- EXISTING MNR CONTOUR EXISTING ROAD f— FLOW ARROW NOTES* 1. PLAN SHOWS EXAMPLE OF SURFACE WATER MANAGEMENT. ACTUAL LOCATIONS OF DITCHES AND EXTENT OF WORKING AREA WILL BE DETERMINED IN THE FIELD. 2. WORKING PAD SEDIMENT DITCH AND TEMPORARY CLEARWATER DIVERSION DITCH TO BE LEFT IN PLACE AS REFUSE PAD IS RAISED. 3. MODIFY TEMPORARY CLEARWATER DIVERSION DITCH TO DRAIN TO SEDIMENT DITCH EAST AND WEST OF PILE PRIOR TO PLACING REFUSE OVER TEMPORARY CLEARWATER DIVERSION DITCH. • •' 1 ti • OR REPORT WAS ITPREPARED.BV ME OR UNDER My DIRECT swErHrsloN AND Twa I AM A ouLr LICENSED PROFCSSIO hL ENGINEER UNDER THE uws � SK'.NATuR, I NT Plops Office: BARR ENGINEERING 00. BARB 4700 NEST 77TH STREET MINNEAPOLIS, MN. 55435 -4803 M nl—poh N1ineesato ' F— 1(952) 832-2601 7 1 2800- 632 -2277 ....b.,com scale Date AS SHOWN 06/09/11 MOUNTAIN COAL COMPANY, L.L.C. SOMERSET. COLORADO RPE EAST PERMIT DRAWINGS WEST ELK MINE UAHH rKVJt%,I NO. Os 6-1003 69UU N I I ororn MRP CLIENT PROJECT No. Mph: Checked PTS REFUSE PILE WORKING PAD DRAINAGE PLAN PRNTED NAME PHILIP B SOLSE PATE 07/21/2011 REG. No, ±0864 RELEASED TO /FOR A B I C I D I E 1 D��9 R DWG. No. C -13A REV. No. A N0. BY HK DATE REVISION DESCRIPTION DATE RELEASED Approved