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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division <br />Rationale -Page 9, Permit No. CO-0045161 <br />pH, s. u. (min-max) 3 -/7.3-8.9 6.5-9.0 0 <br />Settleable Solids, mP/P 2 <0.5/<0.5/<0.5 0.5 0 <br />TDS, mg/P 3 L587/190/2580 none - <br />Total Iran, mg/? <br />30-day avg 2 1.12/0.84/1.39 3.5 0 <br />daily mnr 7 1 /7/O R4/1 _?4_ 7 0 It <br />Table V-8 -Self-Monitoring Results for Outfall 009 <br />,.. <br />No..Of :..' .:: ' Reported. Previous:. ... No- of ... <br />Repaiting ::: ' .::' <br />ns::::.:'::::;. <br />Conc <br />..:...entrann ..::.Permit::. Linutation. <br />,. ., <br />Parameter:.. :..: .. ..::.Perrods:;:.:;> :::.:.:::::: :' ;..:.::.:' .. 'I.imittitivit <br />Eicursinni.": <br />Flow MGD <br />30-day avg <br />daily max <br />TSS, mg/P <br />30-day avg <br />daily max <br />Oil & Grease, mg/P <br />pH, s. u. (min-max) <br />Settleable Solids, mP/P <br />IDS, mg/I <br />Total Iron, mg/P <br />1 0.98 none - <br />1 0.98 none - <br />1 280 70 <br /> 1 <br />1 NV 10 0 <br />1 8.0-9.0 6.5-9.0 0 <br />1 <0.5 0.5 0 <br />1 270 none - <br />Table V-9 -Self-Monrtoring Results for Outfall OZO <br />;.... <br />N <br />o.. Of .::::.... • : .: Repai7ed ..' Previous. .. No.. o f..::: <br />Reporting Coneentratians : ; . Permit ::::::..... limita[tibn:. . <br />Pardmeter '. : Perrods . ° : Avg/Mvi/Max Lindtation:::. : Excursions <br />Flow MGD <br />30-day avg <br />daily max <br />TSS, mg/P <br />30-day avg <br />daily max <br />Oil & Grease, mg/d <br />pH, s. u. (min/max) <br />Settleable Solids, m?/P <br />TDS, mg/? <br />Total Iron, mg/P <br />3 0.37/0.22/0.523 none - <br />3 0.40/0.23/0.523 none - <br />2 44/27/61 35 1 <br />2 44/27/61 70 0 <br />4 NV/NV/NV 10 0 <br />4 -/8.0/8.9 6.5-9.0 0 <br />3 <0.5/<0.5/<0.5 0.5 0 <br />4 1370/850/2530 none - <br />3 <br />2. State Sampline: Ihere are na recent state sampling results available for this facility. <br />B. Comp[iarice With Terms and Conditions of Previous Permit <br />1. ERluent Limitations: Over the period summarized in Tables V-1 through V-9, the perminee reported a total of <br />three exceedences of the TSS 30-day average limitation, two ezceedences of the TSS daily maximum limitation <br />and three exceedences of the upper pH limitation. The Division has configured the computer tracking system so <br />that TSS and total iron erceedences that are exempted under the alternate limitation burden of proof <br />