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B <br />art I <br />Page lh of 19 <br />Permit No. CO-0042562 <br />MONITORING REQUIREMENTS <br />4. Chronic WET Testing - Outfalls 001 and 002 (continued) <br />(g) Spontaneous Disappearance <br />If toxicity spontaneously disappears at any time after a test failure, <br />the permittee shall notify the Division in writing within 14 days of a <br />demonstration of disappearance of the toxicity. The Division may <br />require the permittee to develop and submit additional information which <br />may include, but is not limited to, the results of additional testing. <br />If no pattern of toxicity is identified or recurring toxicity is not <br />identified, the toxicity incident response is considered closed and <br />normal WET testing shall resume. <br />(h) Toxicity Reopener <br />This permit may be reopened and modified (following proper <br />administrative procedures) to include new compliance dates, additional <br />or modified numerical permit limitations, a new or different compliance <br />schedule, a change in the whole effluent toxicity testing protocol, or <br />any other conditions related to the control of toxicants if one or more <br />of the following events occur: <br />(i) Toxicity has been demonstrated in the effluent and the permit does <br />not contain a toxicity limitation. <br />(ii) The PTI/TIE results indicate that the toxicant (s) represent <br />pollutant(s) that may be controlled with specific numerical <br />limits, and the Division agrees that the numerical controls are <br />the most appropriate course of action. <br />(iii) The PTI/TIE reveals other unique conditions or characteristics <br />which, in the opinior. of the Division, justify the incorporation <br />of unanticipated special conditions in the permit. <br />(iv) The Division may reopen this permit and impose chronic toxicity <br />limits where chronic toxicity is identified. <br />amended 01/06/93 effective 03/01/93 <br />amended <br />effective <br /> <br />