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A <br />- 30' <br />1_ <br />VARIES <br />Tf'P /CAL UNDERDAPA /N PROF /LE <br />m <br />SUBGRADE -z- _- � <br />ACCESS ROAD - SECTIONF F <br />Q-/ <br />1.0, <br />-- - -- -7 <br />\�� ' 0.3'FREEBOARD <br />0.5' <br />CATCH DITCH- SECTION S-S <br />4.2' <br />2.7' <br />/ 0.3 "FREEB&wD <br />2.5 }0.6' <br />SOUTH DIVERSION DITCH -SECTION T -T <br />A <br />y <br />0.8' <br />/ 0.3 FREEBOARD <br />/r— <br />CATCH DITCH - SECTION U- U <br />-M /RAF/ /40 S FILTER FAMIC <br />oQ °LC.o Gpq o���.o °ooe8 °G Ooa <br />o O:O <br />ROCKF /LL(A5SPEC /F/EO) <br />.Secfion D -D <br />1JAIDERDRA /N DETAIL 'D <br />EIEV : 4750 <br />ELEV= 4748.5 <br />SP/LLW9 y <br />Sec&nenl Pond SPea cofions ~- <br />Li`PTH FROM BOTTOM OFSP/LLAVAV 5 FEET <br />CAPAC /TV : 3, 8 9 ACRE FEET <br />FREEBOA,PD //-,r. <br />SEDIMENT STORAGECAA!40TfJ / vEAR - 0.61 AC R E F E ET <br />STORAGE CAPAC ?v : /0 SEAR, ?49LY/REVENT + 0.61 ACRE FEET <br />OVERFLOW CAPAC /TV : 25 VEA47 ?4 NOU,P EVENT <br />DETENTION T /ME .'AS NEEDED <br />DEWATER/NG : P C k [A B L E M P <br />,SPILLW4wSIZE : "O' vV11;E i EN CHANNEL <br />kli' PAY Ir� rMLHGLNCY <br />SPILLWAY: L)50= 6° <br />EX 15T /N6 GROUND <br />FILL -s- <br />EL f V.: 4736 <br />S40/MERIT POND N0. & -- SECT /Ol✓ P - R <br />/0, <br />�' CUT <br />OR /G/NAL GROUND <br />D /VE.PS /ON DITCH- SECTION C -C <br />2 <br />2.2' <br />m <br />`-- — /0 -j <br />I I <br />j <br />u_ G�UND <br />BERM AND DITCH - SECTION E- E <br />SECTION <br />G -G <br />SECTION <br />H -H <br />EXHIBIT <br />2H <br />EXHIBIT <br />o-B <br />s FLEV. tic <br />.o::o: o:...p:. .. <br />ELF ,x748.5 <br />c..: F -.CAR( <br />SEDIMENT POND 8 SECTION R'- R' <br />/25' <br />SURFACE QEB.P /S SKIMMER <br />766l0OF8.4NKELEV = 4932.3 <br />T <br />EMERGENCY SPILLWAY 4830.0 <br />�/ PRIMARY SPILLWAY 4827.6 — <br />OIL SKIMMER -18 "ADS PLASTIC =� - '- ---- - - - - -- 3'�MP <br />- - -__- 6 PVC <br />- - - -- --- - - - - -- <br />PONDBOTTOMELEI� -10AI 4823 SLOTTED OR UT OFF BELOW GATE VALVE <br />0 <br />SEDIMENT POND NO. 6 - SECT /O/V B -B <br />Sediment Pol7ol S/oecif1cofions <br />AeEEBOARO : /. 0 F7. <br />.SEDIMENT STORAGE CAPAC /TV ONE VEAR, <br />STORAGE CAP46-17V . /O S'Z -4k, 24HOU,9 EVENT. <br />OVERFLOW CAPAC /TV 25 VEAR, 241-10UREVE417 <br />DETENT /ON T /ME 24 HOURS <br />DZ-WATER /NG .- MANUALLV 01cK,?,qTED GATE. <br />1 <br />0900 <br />A,3 <br />POWDERHORN COAL COMPANY <br />P.O. BOX 1430 PALISADE, COLORADO 81526 <br />REVISIONS <br />I RPY%Sed- %—dIMen1pon d Bf �o, Coss - <br />S -S 5`7- -r"- G.B. 7 -20 -82 <br />)Asbui# - /2 -9 -B2 - 6, 23 <br />DELe/EJ Jcf4i� s1 � AUUi= <br />1 REVISED POND 6 X- SECTION <br />Revised Fard 8 Soecs. I <br />M.R <br />DIMENTATION CONTROL PLAN <br />DETAILS AND SECTIONS <br />NO SCALE <br />DRAWN BY: G.8 I <br />CHECKED BY: yla.� lo- IS-S/ EXHIBIT 20 <br />APPROVED BY <br />IIII VIII VIII VIII VIII VIII IIII IIII <br />oaz9sv <br />