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COLORADO D£PAR7;b1ENT OF P1JBL/C H£,9LTH AND £Nl'1RONh1£NT, Wrrter Quuliry Cur+trol Dirtsron <br />Rnnarale -Amendment No I !'age 3, Permit No CO-0000221 <br />3. Chemicals Userl~ The penniaee drd nol specify mry chermc'nls for use in waters that nwy be discharged from <br />• these new outfalls. On this bnsis, no chernicnls are npproved under rhrs amendment Prior m use of an.• <br />applicable chemical the permittee rnusr submit u request jot approval which includes rite most utrrent Nlarennl <br />Sajeq~ Data Sheer (hISDS) jot thnt chemical. Until npproved, use of arty dtemica( in waters that may be <br />discharged cm71d result in dischnrge of pollummrs nor awhorized under the permit. Also sze Pnn ILA.2. of the <br />permit. <br />B. Wastewater Treatment Uescriptinn <br />• <br />As mining e.lpands, ponds with new outfnl(s 012. 013 and 014 are being added to rite treatment systems a[ the <br />e.cisting Yoast Mme and ponds with new outfalls 0I5. 016 and 0! 7 nre being ndded to the treatment system at dre <br />ecisting Senecn 1IW Mitre All outjalls eccept 015 may trem artd discharge wastewater frorrr surface runoff, surface <br />mine pit dewatering (rnnsidered as mine warerl mrd/or spoils spring water. Pond/ou(jall 015 wit! discharge arty <br />surface runoff £ffluenr Jlow from the primnry spillways at nl[ six nutfa[!s wdl be measured with pnrshall flumes rhnt <br />are sized according ro the maximum flow expected through those spillways. lnfonnntion about the new and existing <br />outfalls is summarized in the following table. <br />Table V-1--Discharee Poirrt Irt(ormation <br />OutJall Wastewater Source Avg Flow, +YIGD Dailp Max Flow, <br />MGD 1(l-pr/24-hr Evenl <br />Vol, MG Pond Stora e <br />Volume, h~ <br />002 SR, SS 0.3316 7.4233 3.8900 10.2056 <br />003 SR, TW 0.0903 0.3557 0.1343 0.9319 <br />004 SR, SS 0.1948 4.6844 2. ! 776 2.7208 <br />005 SR, SS 0.0/65 0.7978 1.5119 0.6126 <br />006 SR. SS, h1W 0.0543 1.1563 4.1350 !.5250 <br />008 SR. SS, MW 0.1782 2.1600 1.8704 2.8153 <br />009 SR 0.0422 0.1584 1.1274 1.3425 <br />010 SR. SS, hIW 0.181 * 3.432* 5.963! 3.2878 <br />01! SR, SS, h1W 0.032* 0.963* 0.8277 0.5670 <br />012" SR. SS, h1W ** ** 4.7639 1.3034 <br />013 " SR, SS, hl W * * * * 0.6452 0.2867 <br />014" SR, SS. MW ** ** 2.9/97 0.6452 <br />015" SR ** ** 0.5865 0.5377 <br />016" SR. SS, MW ** ** 2.0724 0.7690 <br />0/7" SR, SS, hIW ** ** 0.7690 0.6224 <br />SR means Surface Runoff SS means Spoils Spring. 1v1W means Kline Water, TlV means Tntck Wash <br />" New outfall added vin this amendment number / <br />* Design volumes <br />** Because drew nre nex• outjalls. no discharge dram have been nccumulared <br />Winter access to new mufnlts UI4, 015, 016 and 017 may be hazardous rat tunes m the operator. They have <br />requested the same redteced winter monitoring frequencies dmt no}v npply ro outfalls 004. 005. 008, 009 mrd 011. <br />• The fncility contract person was ir7jured recently while nnempting m perform the required monuoring. He susmined <br />severnl cracked rbs and nmscle damage m lux arm. Tyre Division does rant believe that perntuee personnel should <br />he required ro place themselves in n positimr of harm to obtain discharge nrorriroring samples. See discussion in <br />section VLB joUowir~g Table V1-8. <br />