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~E 6 <br />COL01NY0 COAL COMPANY <br />SEDIMENTATION POND SUMMARY PROPOSED PLAN <br />REVISED: November l). 199! <br /> 001 003 00] 001 005 006 00] 000 009 010 <br /> STREETER WORK AREA GOSSARD GULCHA STONER SIDIN RAIL LOOP PROSPECT WE9T PIT SECTION I6 EAST TAYLOR <br /> POND POND POND POND POND POND POND POND POND POND <br />ATER9HED AREA (acm): <br />Qalurbeb 00 591 358 00 ].0 51 00 00 00 00 <br />Poauninirp TOpsoAeO anB Sae0e0 3113 00 00 895 p.0 00 800 904 BOJ 1380 <br />DMISNr0e6 SlB 181 00 580 BO 0.0 191.5 00 J3.9 1•8] <br />1~3 Yaar ftatlamaVm ]B.4 118 00 ]19 00 0.0 t]B3 i09 3].t ]05 <br />]. Year RetlemaVm BI]J 4B] 00 1113 00 00 lR9 1480 599 5]JB <br />ToulAna IIOZB 1]59 359 611.) 1J0 ST ]50] 55]] 3001 918.8 <br />POND PARAMETERS: <br />BoXGVn Elevation (XI BS]90 ]1190 8]818 66050 8]310 8]N3 8]35.] 6830] ]1103 09300 <br />Pmt pal SpuwaY InveX Elerahm IX) 85850 ]155.8 8389 J 681] 5 8]398 6]51.5 0]503 fiB]] 0 ]]53.8 69510 <br />Emaryerry Sp9w'eY lnvan Eleva9bn lX) BSBBO ]158.0 8]93] 68193 BJJ30 B15J0 6]518 fi0]00 ]]515 89510 <br />TopM EmDanunem Elevahon (0) 85910 )1000 BI000 BB110 8]310 8]550 0]510 BBHO ]]Sfi0 0956.0 <br />SbnOS Voume Bebw Emar9enq $mlM1Vry InveR (auX) 11 1] 191] 1 ]] E.85 ] 14 1 U 5 ]0 13.80 5 ]1 B SB <br />Sbn9e Voume Below Pmupel SptlMay InveO (¢411 5 31 1]00 1 ]6 5.35 t B] 109 153 11 61 4 ]5 ] Ot <br />Sbrepe Volume Below Spillway Petlwebm(al (auX) 3 30 B ]1 N/A 3.]] 0 ]] WA 1.50 153 1 19 3 51 <br />Pr'vi4pal 9pibway Paumeurs: <br />Type PeH Riser PeB Ruar Drop Inlet Perl. Riser Ped Riser inrlJe Tube Pen. Rises Perl. Riser Perl Riser P4R Rne~ <br />Riser DUmeler 9n) 130 110 00 130 130 WA 110 100 130 180 <br />Rim Ha~9X1 (X) 3] 51 10 ]5 5] N/A B] 1tfi 93 101 <br />Baml DUmeur On) 180 130 60 120 120 BO 80 100 IIO tB0 <br />Elevabm of Petlanoonls)(X) fi5B39 )1510 WA 6615.5 61150 WA fi]440 BBJOO ]]480 89140 <br />Size of Parlon0on1s71~n) 10 40 N/A 30 10 WA 10 10 10 40 <br />Numeer Pl Parlarauan+ 3 J WA 3 1 WA 3 J 1 2 <br />Emer9anq Spillway Paremelen <br />Type Tnpeiatlal Tnpezoi0al TnU~le Tube Tapazadel irapazmeal Trapezoi0al TraDezbibal TraOezoiOal TrepezuCal Tnpexoi0al <br />Diametm lint WA NIA ]00 N/A N/A WA N/A NIA WA N/A <br />Bbnom NSEN (XI 100 150 N/A 150 50 ]0 13.0 3a0 190 300 <br />Lsn9N (X) 150 1100 1550 J00 100 150 300 310 1]0 300 <br />Sqe Slopea'iH 1V (XI 15 15 NIA 15 30 3.0 15 1.5 3.0 3.0 <br />HYDROLOGICMYDRADLIL PARAMETERS: <br />Base ROw Rab1 (dsl 015 000 p00 000 000 000 000 00] 000 000 <br />14Yaer, l4~MOUr Slomi Erenl <br />Pmtp~uban pis) 10 1.B 1 0 1 0 1.0 1.0 1 B LB 1 B 1.8 <br />RunoB Volume lecXl 1].] 530 310 SD] 058 0.50 130 5]3 1]0 ]49 <br />Pnr~upel SpiOway Peak Disz9lerpe (ds) fi 5 1 1 1 3 I B O S 0 9 3.0 I I 3 3 4 0 <br />Emaryency Spillway Peak 0.azAer9e (tlf) 00 00 0.0 00 00 00 00 00 00 00 <br />Peak Surtau Waur Su9a Elevaum 1X1 B5BI9 ]155 5 fiJ9t 1 8819 t 83381 6]53.] 8]19.5 60JJ ] ]]53 5 8953 ] <br />3SYaar, 31~HOUr Sbrm Event. <br />PreuPiuum Unl 3J 13 I J 2] 1] 13 3 J 3.3 i] 3 3 <br />RonoX Volume (ec Xl 11] ].61 309 BIB pB1 0]0 830 910 155 DOp <br />Pnnupal SpilAray PeaM PsWge Itlsl L5 J.3 t J 60 O B 1.1 15 31 1 B 110 <br />Emerpemy SpiOwaY Peek DfrAarpa (Na) 399 0.0 00 10] 00 00 D.0 00 34 )] <br />Peak Surtau WaurSU9e EIevaVOn (X) 6588.9 ]1581 fi39ii 68300 0]3]0 8]53] 8]51.8 BB]81 ]]SLB 0951.1 <br />POM Freeboard lXl 11 10 90 10 ]0 21 33 49 11 19 <br />SEDIMENT LOADING PARAMETER9: <br />6bm PreBitlaO Peek SeNable OuNOw COnfanVaben lmN) 000 00 00 00 00 00 00 00 0.0 00 <br />PraB¢1atl Arnual ABimenl LOaOUq puX) 004 048 008 03J 003 003 0.53 049 031 113 <br />Available SsBimen151bra9a Volume AI Gale Valve IDYM (aoXl 090 1.51 1 55 3 03 0.31 O.BI 0.]6 1 BB 054 1.BB <br />Geu Valra Invert E1eva9on (A) BSBt 3 ]150 T WBB.] 0011.D 6]339 6]51.5 6]11 B 60351 A43 ] fi941 B <br />PnBiuee Number o151Dra9e Yaan 1o Gau Valve linen 1 1 O Z 191 13.J 10 5 33.0 1 5 J B 3 3 1] <br />