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r <br /> I <br /> T <br /> Y <br /> r }a <br /> f <br /> i <br /> I L256t OF DH'�. Ey. 811E <br /> EY2•GENLY PILLwAY \\ <br /> 20% 4¢ACE Z FT <br /> d`'GO f / LeEST of Er-IMZG�Etic.Y dill LWA cr *�.,�Lc�\Esa zv F7 <br /> },. 1 V El. 8i�7. rap <br /> I FT / o <br /> � j Z 2 1� l0l0� I FT <br /> 2 FT � N TYvICPL CNOfE a) ceiG�.a ' <br /> -- _— Z9,oQ <br /> ZPr INvEzr peNuvAL gviu wAv sov�a <br /> MIN — — — — -- -- <br /> L_I�.�eAr✓E zFT pA CP42w4I.TED CONDuiT iNvE¢T cePr NATUPI>L 4¢+0� SUAZFL>r� <br /> COL.L tTEE� <br /> ECrION Gl IZ+-1 I E6 Bloo e — <br /> Q SEEP Ec9 V.5) (� fT) 7 FT <br /> .K,E GOLL.•cp.S 0EW4TECNC, �-7 FT) IO FT <br /> +� � �EVILE(,GIGUIZE D) <br /> oowNST2E4M I <br /> 2FT 1--�I NOTE:NOTE: Sur6�8LY Gf5k.Nm CQFICE N'�. -�QZ <br /> �Pgl� THI[•ILNE.SS C <br /> • +••_ ' 21GRAp AG�PSr/El7 NIANUALy t LoN- �D Borror EL 61oZ <br /> T2oLLED GATES VALVE. &AAY C3E (Bo92� <br /> • = - - - - _ � �' - �c_".,.- :� * .�\ O INSTALLED <br /> WE'-- 21-11Vr_,Flw 6' GON1) �\ - - - �— DETENTION TIM�nlT20L <br /> a��s^ l e SECTION - jEDIMENTATiON <br /> i <br /> pONO DICE - SECTION 7I—I20UGi—I SPILLWAYS <br /> O 10o' 4G3' <br /> ��— C <br /> • EMFQ/.K NC,� I O GT <br /> I_ELEND 5 FT <br /> -1 FT <br /> Z FT, <br /> �- <br /> -1s► DIVER.S;ON DITrj-I \ y � EXISTIMG STeEAM buvE251on, Z ' —�' I <br /> Z Z GT ThiIGIGNE?^_ 121 paAPLZD <br /> A <br /> _ LIMIT Oc WA.'-TE BILE <br /> CATION OF SEGTICNN <br /> j% TF e0Lj1aH 51pILLWAY 3A � i <br /> LOGA'TiON pG SPILLWAYS AND � � \� PPUNUPAL SPILLWAY <br /> SflLLWAY CHANNEL / Z41N 01A. <br /> ICL>22L(aATEO STEEL Co INo UIT <br /> F16, I <br /> (.J 2E A : PL.AN OI- SEDII"iENTATION {:7c(ycS <br /> MIN S-0 <br /> GENERAL. NOTES Gj <br /> I <br /> 1 ) FIGURES AND SECTIONS A THRU C-C ' SHOW CONSTRUCTION TO BE (COMPLETED PRIOR TO REMOVAL OF VEGE- <br /> TATION 4 <br /> PONDMUSTDBEOCOMPLETEED PREPARATION OF <br /> IIl CONVVEYORDISPOSAL <br /> CONSTRU(ZTIONPILE-FIGUURETAUCTION) , LWER <br /> PRESENTS AO <br /> OPLAN OF THE PROPOSED UPPER AND LOWER SEDIMENTATION PONDS. SECTIION B-B' IS A CROSS SECTION OF <br /> THE FONDS ' DIKES, TAKEN THROUGH THE SPILLWAYS. SECTION B—B ' APPLIES TO BOTH THE UPPER <br /> AND LOWER POND. POND DIKES SHALL CONFORM TO ALL SPECIFICATIONS SHOWN IN SECTION B-S' AND SECTION SECTION OF SILLWAYS aP yV <br /> SPECIFICATIONS DETAILED ON SHEET 9, SECTION 2.0. i �x Ruh <br /> 2). ELEVATION AND DIMENSIONS IN PARENTHESES REFER TO THE LOWER POND. DEC 119$7 <br /> 3) THE LOCATI0 OF-TpE APPROVED MANUALLY-OPERATED GATE VALVES;_ OR ORIFICE HOLES FOR THE LOWER <br /> Lr+l.0 <br /> POND WILL BEt3.0 IFT LOWER THAN IS SHOWN ON SECTION B-B ' , FAT ELEVATION 8098.0. ALL OTHER MINED <br /> RECLAMAT!ONDIVISION <br /> DIMENSIONS AND FEATURES OF THE UPPER AND LOWER POND DIKES AS SHOWN ON SECTION B-B' ARE IDENTICAL. <br /> 4) A SUITABLE PROTECTIVE SCREEN OR TRASHRACK SHALL BE PROVIDEID OVER EACH PRINCIPAL SPILLWAY <br /> INLET. <br /> 5) RIPRAP MATERIAL SHALL BE OF FREE-DRAINING, DURABLE ROCK, RANGING IN SIZE FROM 2 TO 12 I INCHES IN DIAMETER, D50 = 6 INCHES. <br /> 6) CONSTRUCTED HEIGHT OF THE EMBANKMENT SHALL BE 5% GREATER TIHAN THE SPECIFIED DESIGN HEIGHT. <br /> 7) A SEDIMENT LEVEL INDICATOR SHALL BE PROVIDED WHICH MARKS TFHE SEDIMENT CLEANOUT LEVEL IN <br /> THE POND. <br /> 8) THE PONDS SHALL BE CONSTRUCTED BYVAT CAVATING THE IN-SITU SCOILS AND CONSTRUCTING THE DIKES <br /> FROM THE EXCAVATED SOILS; NO EXCAED (CUT) OR DIKE (FILL)) SLOPE SHALL EXCEED 2(H) :1 (V) . <br /> 9) AS-BUILT DRAWINGS INDICATE CAPACITIES AT PRINCIPAL SPILLWAY( INLETS OF 2. 75 ACRE-FT FOR <br /> THE UPPER POND AND 2. 11 ACRE-FT FOR LOWER POND. <br /> 10) RIPRAPPED CHANNEL ALONG FACE OF DIKE SHALL B OF SAME DIMENISIONS AS EMERGENCY SPILLWAY AT <br /> THE CREST OF THE DIKE. CHANNEL FROM UPPER POND SHALL CONTIINUE AT THESE DIMENSIONS TO THE <br /> ENTRANINIMU THE LOWER POND. CHANNEL FROM LOWER POND SHALL iCONTINUE <br /> WILL AT THESE DIMENSIONS E <br /> ENTATION PONaS <br /> TO A MINIMUM OF 20 FT BEYOND THE TOE OF tHE DIKE. THE CHANANEL WILL THEN CONTINUE, WITH- 'OUT RIPRAP, BUT AT THE SAME DIMENSIONS, TO A CONFLUENCE WITFH COAL CREEK ALONG THE <br /> b STRAIGHTEST REASONABLE PATH, TO BE DETERMINED AT TOE TIME OAF CONSTRUCTION, a <br /> IATES <br /> 11 ) SUFFICIENT RIPRAP SHALL BE PLACED ON POND SLOPES AT ALL POIINTS WHERE CHANNELS ENTER THE X AVE., SUITE 275 Mlp-CONTINENT ea5ouecEs, <br /> PONDS AND THE NATURAL DRAINAGEWAY OF COAL CREEK TO. PREVENT (UNDUE EROSION. AT THESE POINTS. = 0401 �K CA2BONDALL C�LO <br /> DESIGNED BY : N(.5 <br /> CHECKED BY 6m M <br /> DRAWN BY : e—miz <br /> APPROVED BY <br /> DRAWING NO. : 3_�� <br /> SHEET 5 OF q <br /> — ,a_-- DATE ' < II—,19� <br /> SCALE : ,a<, <br />