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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Ratiowle -Page 7, Permit No. CO-0000221 Table V-7 -Self-Monitoring ResuU,t for Outfa11009 Reported. Previous. No. of ConcentmAions Pemrit.., limitation Parameter Avg/Min/Ma:. Iimi[atinn Erenrsions Flow, MGD 30day avg 0.0618/0.0063/0.1173 none - daily max 0.0835/0.0157/0.1512 none - TSS, mg/P 30day avg l3/<5/26 35 0 daily max I3/<5/26 70 0 Total Iron, mg/P 30day avg 0.28/0.03/0.52 3.0 0 daily max 0.28/0.03/0.52 6.0 0 Settleable Solids, mP/f <0.4/<0.4/<0.4 0.5 0 Oil & Grease, mg/f wne visible 10 0 pH, s.u. -/8.01/8.87 6.5-9.0 0 Total Dissolved Solids. mg/P 30~ay avg 450/410/490 none - datly max 490/490/490 none - ' 2. State Samolin¢: There are no receru state sampling results available for this jaciliry. B. Compliance Wi[h Terms and Conditions of Previous Permit i 1. Effluent Limitations: The data shown in the preceding tables indicate apparent violations of the permit. a) One TSS exceedence from outfall 003 was the result of surface runoff. Samples before and after this sample were well belos+• the effluent limitations. b} One jailure of the chronic WET test for both the Ceriodaohnia and the Pimeohales species for outfall 004 and one jailure of the chronic WET test jar the Ceriodaphnia sp. only jot oulfal[ 008 occurred. Subsequent testing did not indicate failures. c} One failure of the acute WET test for the Ceriodaohnia sp. Jor outfall 005 occurred. Accelerated testing did not indicate a pattern of toxicity. 2. Other Permit Requirements: The perntittee has been in apparent compliance }vith all other terms and conditions of the permit. V/. TERMS AND COND/TIONS OF PERMIT r4. Determination of Effluent Limitations I. Eflluenr Limitations: /n developing suitable effltent limitations, the Division must review al! applicable standards and regulation and apply those which are more stringent. This review includes, but is not limited to: the water quality standard based effluent limitation, federal guidelines and standards (40 CFR Subchapter N) and State Efjluem Regulatioru (70.7.0). Such a review has been done Jor this facility. The following [imitations will apply. • The basis jot these limitations is discussed in Sections VI.A.2 and V/.A.3.