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i <br />r -� <br />r `! <br />LEGEND <br />18 <br />O <br />0 <br />M <br />W <br />E? <br />n <br />n <br />0 <br />I 1 1 1111 I rl� <br />�i <br />//A <br />\ \ 1 <br />NI <br />�1 \ IF <br />m 0 <br />5 / <br />1 <br />r— <br />CD <br />0 0 0 0 <br />g <br />0 <br />0 <br />co Lo <br />M ^ rQi r Cpj c7 <br />WWWWL L J - <br />PERMIT BOUNDARY WITH PERMIT REVISION <br />CURRENT PERMIT BOUNDARY <br />POSTMINING CONTOUR <br />_ DRAINAGE BOUNDARY <br />TIE -IN BOUNDARY FOR POST MINING TOPOGRAPHY <br />APPROXIMATE LIMIT, PERMANENT FILL BOUNDARY <br />SEDIMENT POND <br />_ -- SECONDARY DRAINAGE <br />DESIGN DITCH /CHANNEL <br />TERRACE DITCH WITH FLOW DIRECTION ARROW (ON OR ACROSS PERMANENT FILL AREAS) <br />•J POSTMINING STOCKPOND (STOCK TANK) EXISTING <br />• POSTMINING STOCKPOND (STOCK TANK) PROPOSED <br />POSTMINING LAND USE IS " RANGELAND " <br />N <br />W <br />S <br />5001 0 500 1000, <br />CONTOUR INTERVAL 25 FT. <br />Norwest PMT ST022307 <br />N 342000 <br />N 341000 <br />• <br />N 3,'f <br />N <br />N 3340n" - <br />i <br />, <br />T r I <br />i N 333000 — 1 <br />4q <br />331000 — <br />°o <br />N <br />R <br />i <br />1 <br />i <br />i <br />i <br />3 <br />3 <br />y <br />n <br />�rI't�l <br />WATERSHED BOUNDARIES FOR <br />HYDROLOGIC MODELING <br />ENGINEER'S CERTIFICATION <br />South Ta for Area <br />1, THOMAS C. PETERSON, being a <br />Licensed Professional Engineer in <br />the State of Colorado, do hereby <br />SCALE: 1" = 500' <br />certify that this map has been <br />ECEIVED RIO <br />DATE: 5126106 <br />reviewed by me and is true and <br />correct to the best of my knowledge <br />DRWG. BY. TCP/ES1 <br />and information relying on work <br />PR 0 3 2001 TINTO <br />APPROVED BY: <br />performed by others, including Norwest <br />Corporation's volumetric calculations and <br />t ,,,; <br />on of Reclamation, ENERGY <br />DRWG NO. <br />optimized PMT study, and based on <br />M <br />Wing and Safely AMERICA <br />information supplied by experts <br />identified in section 2.03.3 of the <br />�� Mne <br />MAP <br />41 A <br />Colowyo Coal Company L.P. Permit. <br />sr3, stele wen,.81 4 <br />Meeker. Cda,ado 81641 <br />L ''' <br />No. <br />REVISION <br />DATE <br />BY <br />CHk <br />;.. �,sr, <br />S. o <br />PR -2 <br />Updated with South Taylor Areas. <br />5119106 <br />TCP <br />TAT <br />32257 2 ' <br />3 /L3/o 1 �' <br />o� •,• 4 <br />PR <br />secon ary ramage networ with legend its. <br />Modified for landslide ditch <br />TCP <br />TAT <br />ii�0 <br />-2 <br />pit shell area and associated <br />0212107 <br />FSS'••....•••�V��'`��� <br />cMnges based on review comments, pond & stockpond <br />4 1DNA }�`�, <br />PR -2 <br />Modified postmine topography in central portion of Sec. 17, <br />03123107 <br />TCP <br />TAT <br />r — <br />associated drainage changes on fill, extended Sec. 28 <br />THOMAS C PETERSON <br />�ollectQr ditch, added lateral drains on fill & areas above, <br />P.E. No. 32257 <br />abbelletld seconds drain e Channels <br />3 /L3/o-7 <br />DATE <br />