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PART I <br />Page li of 19 <br />Permit No. CO-0027146 <br />B. MONITORING REQUIuRMFx'rg <br />4. Acute WET Testing - Outfalls 001. 002. 004 and 015 (continued) <br />(f) Spontaneous Disaooearance <br />If toxicity spontaneously disappears at any time after a test failure, the <br />permittee shall notify the bivision in writing within 14 days of a demonstration <br />of disappearance of the toxicity. The Division may require the permittee to <br />develop and submit additional information which may include, but is not limited <br />to, the results of additional testing. If no pattern of toxicity is identified <br />or recurring toxicity is not identified, the toxicity incident response is <br />considered closed and normal WET testing shall resume. <br />(g) Toxicit~Reonener <br />This permit may be reopened and modified (following proper administrative <br />procedures) to include new compliance dates, additional or modified numerical <br />permit limitations, a new or different compliance schedule, a change in the whole <br />effluent toxicity testing protocol, ar any other conditions related to the <br />control of toxicants if one or more of the following events occur; <br />(i) Toxicity has been demonstrated in the effluent and the permit does not <br />contain a toxicity limitation. <br />(ii) The PTI/TIE results indicate that the toxicant (s) represent pollutant(s) <br />that may be controlled with specific numerical limits, and the Division <br />agrees that the numerical controls are the most appropriate course of <br />action. <br />(iii) The PTI/TIE reveals other unique conditions or characteristics which, in <br />the opinion of the Division, justify the incorporation of unanticipated <br />special conditions in the permit. <br />Amendment No. 1 Issued ~ y ~~ 1 Effective A! ~~ '~ <br />