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COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division <br />Arr+endmenr No. 2 -Rationale -Page 2. Permit No. CO-0027146 <br />1l1. PURPOSE OF AMENDA9ENT <br />Table 1//-1 -Discharge Poirrls <br />Out all ::: Wgsliwaler.Sburce 10, r/24=hr Event Vol Desi Ca ac' ;. Receiviri": 1V61er.::::!::::..::: <br />001 Roadside South Mine Water N/A 0.360 MGD Colorado River <br />002 Roadside South Mine Water N/A 0.360 MGD Colorado River <br />004 Roadside North Mine Water 0.080 MG 0.432 MGD Coal Creek <br /> and Su ace Runa <br />005 Pond 9/Surface Runoff 0.228 MG 0.228 MG (runajn, Colorado River <br /> 0.108 MG (sediment) <br />006 Pond 4/Surface Runoff 0.124 MG 0.124 MG (runojn, Govr Highline Cana! <br /> 0.013 MG (sediment) <br />007 Pond S/Surface Runoff 0.163 MG 0.163 MG (runoff), Conl Creek <br /> 0.046 MG (sediment) <br />008 Pond 8/Surface Runoff 0.583 MG 0.583 MG (runaJ)~, Colorado River <br /> 0, 274 MG (sediment) <br />009 Pond 1/Surface Runoff 0.26/ MG 0.261 MG (runoj~, Colorado River <br /> 0. / 17 MG (sediment) <br />070 Pond 2/Surface Runoff 0.117 MG 0, l17 MG (runofn, Colorado River <br /> 0,033 MG (sediment) <br />011 Pond 6/Surface Runoff 0.484 MG 0.484 MG (runoj~, Coa! Creek <br /> 0,803 MG (sediment) <br />012 Pond 7/Surface Runoff 0.029 MG 0.029 MG (runa„~, Colorado River <br /> 0.007 MG (sediment) <br />013 Pond 10/Surface Runoff 0.446 MG 0.446 MG (runojn, Coa! Creek' <br /> 0.401 MG (sediment) <br />014 Pond 1 ]/Surface Runojj*`• 0.645 MG 0.779 MG (runofn, Coal Creek <br /> 0.632 MG (sedimer+rJ <br />015 Roadside South Mire Wnrer NA 0.18 MGD Ur+nnmed tributary to <br /> Colorado River <br />• Surface runafl is newly added order this amendment. 71tit addresser funnel-shaped decbnr above papal thm drai,u to papal swop and it <br />pumped to srdimemm~on pond. ~ <br />•• Pond ndll be locamd 500 fen rut of ongmatly planned location ro accomndatr nrnofjfrom a borro.v area. <br />77+e relocatior+ ojporul 1 / rhos discharges through outjn11014 does not affect the lin+iratioru jot this ourfnll. Those limitations <br />shall coruinue. <br />77+e Roadside North Mine discharges ro a sump that discharges through ourjal[ 004, the overage daily mitre drainage jlorv <br />is 0.162 MGD. The patrol jar this mine is nr the botronr of n funnel shaped decline. Surjnce runoff from the decline nren <br />nlsn ~:, ~ ~ ••~ ~r~~ ~ • ~• ~ 'rr•~ ~ ~ ~~~rrrolunre (or n !0-year, ?= :~••i r preeioirnnon event jar swftce runoff in /he decliae nren <br />.true ~.. ,.~ ... ,:,.,.. ., 0.080 d4G. Arerrfure, r. .,...,,n,in~ ..j me flow from uutfall OOJ nr mry rime including <br />dmrr,:- i:r.r.~;?:r.r: r, ~.~ r~.~ecr ~ add be from mice ,t~nter. F, rr:. ,ru.rn, rl:e n(rrrnme lunimrions jut recipirnrion events <br />ore our nvai(ub(e fur dos uuq~:Il The liuurmions previou.cr :u .jfrcr s itt/! wnrinue m be m effect jot this outja . <br />