PERMFILE64344

• Permit No: C1981035A
• IBM Index Class Name: Permit File
• Doc Date: 1/14/1998
• Doc Name: MINE WASTE PILE DESIGN
• Section_Exhibit Name: MAP C-17
• Media Type: M
• Archive: Yes

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See detail sheet for modifications
to the sedimentation ponds
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6 +00 / AC�'FSS R(lA0
j REL',IN LINED
CHANNEL U04N PILE FACE END TOP OF PILE SIDE
�( DRAINAGE CHANNEL
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TIE UNDERDRAIN INTO f ND Of �XI STING' L,RAIN
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Q +off �w 04 ,
i 1490 - 5 YR ELEVarION�
+oO . _` CLE- WATER DIVERSION DITCH
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FRENCH DRAIN`,
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CONNECT TO EXISRNC ° ' c: T
EASTSLDE CHANNEL
O� 7(5'x4 1- 1
CONNECT r0 YARD APP OXIMATE LOCATION AND SI -'E
DJ7A/NAGf SYSTEM / i \ OF THE COVER /FILL TC) AGE FILE ) _ _ _ *• \
FOR THE 5 YEAR ELEVATKIN OF THE
%x� t WASTE ROCK PILE (V= 70UO.S;t<T.-- \
LAPPROVIV4TE EXISTING PILE (/ !)q/) TOP
= END P OF PILE IF —DITCH IPJTERCEPTS CONTAMINATED /
1vft:1V1 70 CONFORM TO _ DRAINA ,E CHANNEL, UNDERDRAIN RUNOFF FROM WASTE PILE AND
PNOPO';£D PILE GEOMF [hY BEGIN ROCK LINED NA I UR'1 L AREA 10 SOUTH AND � eEON DITCH
CHANNEL DOWN PILE FACE DIVERT`; IT 7(1 EDIMENTATION PONU�
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U 100 200
`('ALE: lin - 100ft
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%'�_/ Al V1�W 1 -? L- MIN[- Vl'A (_ - F " V f
LIST OF PROPOSED FEATURES
1. WASTE PILE
2. CLEAR WATER DIVERSION DITCH (NORTH SIDE)
3. CLEAR WATER LINED DITCH DOWN NOR'1H FACE OF PILE
4. CONTAMIN. WATER INTERCEPT DITCH (SOUTH SIDE)
5. CONTAMIN., LINED DITCH DOWN SOUTH FACE OF PILE
6. UNDERDRAIN
7. ACCESS ROAD
8. MODIFICATIONS TO PONDS: CONNECTOR PIPE, LOW
OUTLETS, SPILLWAYS
WASTE PILE GEOMETRY
PILE VOL UMF = 1,022,000 CUBIC YARDS
FACE SLOPE :' 2.5: 1
FACE HFIGHT = 200 FT
TOP OF PILE SL OPF = 110
TOP OF PILF CROSS SLOPE = 2.1'o
FACE TOE FLFV = 7415 FT
FACE TOP FL FV = 7615 FT
TOP END OF PIL F FLEV = 7626 FT
X FENCE
FENCE
PLACEMENT OF FILL
1. THE WASTE PILE WILL BE CONSTRUCTED IN STAGES EXTENDING
I.IPVALLEY AS NEEDED.
2. REMOVE AND STOCKPILE ALL TOPSOIL PRIOR TO DEVELOPMENT
OF A NEW STAGE.
3. MINE WASTE SHALL BE PLACED IN LIFT`; NOT TO EXCEED 12" — 1
4. EACH LIFT SHALL BE COMPACTED TO 900% OF THE MAXIMUM DRY
DENSITY OF 91.0 PCF, OPTIMUM MOISTURE CONTENT OF 12 %.
Lp0 REG; "l
RECEIVED
JAN 14 1998
Division of Minerals a ^Pnloav
NATIONAL KING COAL MINE
!$g °0
MINE
WASTE
PILE DESIGN
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HESPERUS, COLORADO
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PLAN LAYOUT — C —
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NATIONAL KING
COAL MINE
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4424 CR 120
ENGINEERING:
HESPERUS CO C
DON R MAY P.E. 970 - 385 -7504
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PREPARED FOR:
COLORADO 'STATE
DIVISION OF MINERALS
AND GEOLOGY
-'
SCALE: I" =
100'
DATE: 12/30/97 SHEET: I
IIII IIIII IIIII IIIII IIIII VIII IIII IIII