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PART I <br />Page No. 4 <br />Permit No.: CO-0042161 <br />A. DEFIMTION OF EFFLUENT LIMITATIONS <br />• 1. Effluent Limitations (continued) <br />b. Effluent Limitations for Outfall 002 (continued) <br />ii) Facilities Operation (outfall 002) <br />The permittee shall at all times properly operate and maintain all facilities and systems of treatment and <br />control (and related appurtenances) which are installed or used by the permittee to achieve compliance with <br />the conditions of this permit, This provision requires the operation of back-up or auxiliary facilities or <br />similar systems only when necessary to achieve compliance with the conditions of the permit. Any sludge <br />produced at the wastewater treatment facility shall be disposed of in accordance with State and Federal <br />guidelines and regulations. <br />iii) Numeric Effluent Limitations For Outfall 002 <br /> Discharge Limitations <br />Parameter ~ 30-Day Avg. 7-Day Avg. <br />Flow, MGD 0.015 N/A <br />pH, s.u. (Minimum-Maximum) NA 6.5-9.0 <br />5-Day Biochemical Oxygen 30 45 <br />Demand (SODS), mg/P <br />Total Suspended Solids, mg/£ 75 110 <br />• Fecal Colifornt, No./100 mP 6,000 12,000 <br />iv) Percentage Removal Requirements (SODS Limitations) <br />In addition to the concentration limitations on SODS indicated above, the arithmetic mean of the SODS <br />concentrations for effluent samples collected during the calendar month shall demonstrate a minimum of <br />eighty-five percent (85%) removal of SODS, as measured by dividing the respective difference between the <br />mean influent and effluent concentrations for the calendar month by the respective mean influent <br />concentration for the calendar month, and multiplying the quotient by 100. <br />2. Whole Effluent Toxicity -Chronic Lethality Limitation <br />Beginning immediately and lasting through June 30, 2006, there shall be no statistically significant difference in <br />lethality (at the 95 % confidence level) between the control and any effluent concentration less than or equal to 100°U <br />effluent. Such limitation shall apply as a daily maximum. , <br />3. Compliance Schedule -Total Ammonia Limitations <br />The permittee shall achieve compliance with the effluent limitations of Part I.A.I.a., effective July 1, 2005, in <br />accordance with a schedule of compliance approved by the Division. <br />The permittee shall submit to the Division by July 1, 2002, an implementation plan for achieving compliance. If <br />appropriate, the plan shall include operational changes, modification of the existing treatment system, pretreatment <br />and/or construction of a new treatment system. A schedule of dates to accomplish various tasks related to the plan <br />should also be included. If changes are not deemed necessary by the permittee, they shall submit monitoring data in <br />• support of their contention. Upon approval of the implementation plan by the Division, all terms and conditions of <br />the implementation plan, including but not limited to the compliance schedule, shall automatically become conditions <br />of this permit. The permittee shall submit Progress Reports on July 1, 2003 and July 1, 2004. <br />See Part I.C. for Defmitions. <br />