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COLORADO DEPARTMENT OF PUB. HEALTH AND ENVIRONMENT, Water Qa y Comro! Division <br />Rationale -Page 3, Permit No. CO-0042161 <br />the following table summarizes the metals standards for all uses. IJu most stringent of these will be used in <br />• calculating e~luem limitations. <br />Arsenic 50 SO 100 <br />Cadmium 30 12 10 <br />Chromium !1/ - - - <br />Copper 45 28 200 <br />Iron - 1000* - <br />Lead 479 16 100 <br />Manganese - I000* - <br />Mercury - 0, 01 * - <br />Nickel 1974 204 200 <br />Selenium 10 - - <br />Silver II 0.4 - <br />• Aquacc lilt U+e raodardr arc bored upon the dirrdved method oJaaafy+i+, euepr jot arrelde, iron, manaane+e, mercary and +elenium <br />• <br />rrardard+, which ore bared upon the toro/ rccoNVabk meshed. <br />B. Rtceiving Watts Data <br />I. uali Quality data for Fish Crerk are available from a one time analysis provided by the petmittee for a sample <br />rolleaed on Dernnber 28, 1993. A summery of the quality data is shown in Table 11I-2. <br />Table !I!-2 -Quality of Receiving Water <br />. .......... <br />.. ...:..... . <br />Valut.- :: 'Pammc[er ..::::.::.::....:::; ::::;..::.:::.. ,:.:. , :..:.. ;:.::..: {rdl : -:.. <br />Parameter .:.. ::.::..:::..:.:.___ , .::r,:.., ;;:a :.:::.:;: , ,. rte .. . <br />• <br />Temp, °C 8 Cadmium, ug/l (7RJ <0.I <br />BODs, mg/l <1 Chromium, ug/l (total) 1 <br />Total Suspended Solids, mg/l 2 Copper, ug/l <I <br />pH, s. u. 7.42 Iron, erg/! (IRJ S00 <br />Oil & Crease, mg/l 16 Iron, ug/! (dissolved) 20 <br />Fecal Califotm, No.IlODmI 10 Manganese, ugll RItJ SO <br />Tonal Dissolved Solids, mg/l 324 Mongoose, ug/l (dissolved) 30 <br />Total Ammonia, mg/l as N 0.09 Mercury, ug/l (total) 0.2 <br />Total Hardnrss, mg/l as CaCOt 259 Nickel, ug/l (IR) G10 <br />Aluminum, ug/l (dissolved) <50 Silver, erg/[ (7RJ <0.5 <br />Arsenic, ug/l (total) < 1 Tlnc, ug/l (IR) < 10 <br />Boron, u /l (dissolved) 0.02 aside, WAD, m /l <0.002 <br />