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I <br />0 <br />67 <br />67 <br />67 <br />6 790 <br />6780 <br />677C <br />6 760 <br />6750 <br />PRINCIPAL SPILLWAY <br />24" X 60' CMP <br />ELEV. 6774.9 <br />PROPOSED GROUND <br />`EXISTING GROUND <br />SECTION A -4 <br />VERT. SCALE: I " =10' <br />HORIZ. SCALE:I " =50' <br />I <br />i <br />TOP OF DAM <br />ELEV. 6781 <br />�s' <br />MIN. <br />PRINCIPAL SPILLWAY <br />24" X 60' CMP <br />INLET ELEV. 6774.9 <br />I % SLOPE <br />RIPRAP� 11-7,x 7, <br />I ANTI -SEEP <br />COLLARS <br />I <br />TOP OF DAM <br />ELEV. 6781 <br />3 3� SPILLWAY <br />I1IKr�- ELEV. 6777.0 <br />�10� MIN. <br />SECTION B -B' <br />VERT. SCALE I" =10' <br />HORIZ. SCALE: I"= 50' <br />wN I UUR INTERVAL= 5 FT. <br />X -X FENCE LINE <br />i <br />I <br />AI <br />I <br />6800 <br />6790 <br />6780 <br />6770 <br />BOTTOM OF POND <br />ELEV. 6750 <br />IC <br />6840-1 <br />6830 <br />6820 <br />6810 <br />6800 <br />6790 <br />6780 <br />i <br />6770 <br />6760 <br />6750 <br />Elevation Stage <br />Area <br />Capacity <br />Total Capacity <br />(ft -msl) (ft) <br />(Acres) <br />(ac -ft) <br />(ac -ft) Description <br />6750 0.0 <br />0.14 <br />0.0 <br />0.0 Bottom of Pond <br />6755 5.0 <br />0.56 <br />1.75 <br />1.75 <br />6765 <br />15.0 <br />1.07 <br />4.54 <br />9.56 <br />PECOCO <br />6770 <br />20.0 <br />1.46 <br />¢.33 <br />15.89 <br />APPROVED BY: R. J. G. _. <br />6774.9 <br />24.9 <br />1.98 <br />4.42 <br />24.31 <br />Principal Spillway <br />6775 <br />25.0 <br />1.99 <br />0.20 <br />24.51 <br />6777 <br />27.0 <br />2.31 <br />4.30 <br />28.81 <br />Emergency Spillway <br />6780 <br />30.0 <br />2.79 <br />7.65 <br />36.46 <br />6781 <br />31.0 <br />2.95 <br />2.87 <br />39.33 <br />Top of Embankment <br />B' <br />6800 <br />6790 <br />6780 <br />6770 <br />6760 <br />6750 <br />S-2 <br />S <br />BOTTOM OF POND <br />ELEV. 6750 <br />SECTION C -C'' <br />VERT SCALET' =10° ' <br />HORIZ. SCALE: I" =50' <br />10' <br />MIN. <br />rRASS- LINEDI ,y <br />TYp 3 <br />i <br />SECTION OF EMERGENCY SPILLWAY <br />NOT DRAWN TO SCALE <br />SENECA MINE <br />LOCATION MAP Permit Number #: C- 1980 -005 <br />SCALE: I" = 400' Class: Permit <br />Section /Exhibit: '-1 - I Cc) Lc <br />i, <br />I <br />or°,DO „�., B . INEER'S CERTIFICATIOM <br />COLORADO P.E. 19959 <br />• R R14L M59EHRI$4• <br />S Q ENGINEEgg R JUI>7 <br />P *fd=• CoaC�;b're DATE- <br />sd'j ••....•• 4' <br />�e�e4ewnbsl6 <br />'1 <br />i <br />. I <br />C' <br />6840 <br />6830 <br />r <br />h <br />6820 <br />6810 <br />6800 <br />6790 <br />6780 <br />6770 <br />6760 <br />6750 <br />4I' <br />___L <br />I .A <br />RECEIVED <br />JUN 281993 <br />DMvIor, Of Minerals 6 L ` <br />PEABODY COAL COMPANY <br />j SENECA II <br />1300 SOUTH YALE, FLAGSTAFF AZ 86001 <br />EXHIBIT 7 -18 <br />PROPOSED PERMANENT IMPOUNDMENT <br />PECOCO <br />SCALE: AS SHOWN <br />DRAWN BY: 0. Y. <br />DATE: 2-26-90 <br />DRAWING NO: <br />REV. • -Ea-•a V RP <br />APPROVED BY: R. J. G. _. <br />�I I1„1'� „I�I� p111 III 011111 <br />l 006551 i <br />�C•i <br />