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r' <br />Part I <br />Page lk of 19 <br />Permit No. CO-0027146 <br />B. MONITORING REQUIREMENTS <br />11. Freeuencv and Samnle Twe - Chronic WET Testin~a (continued) <br />The results shall be submitted on the Chronic Toxicity Tesc report <br />form, available from the Division. Copies of these reports are to be <br />submitted co both the Division and EPA. <br />The permictee shall conduct each chronic toxicity test in general <br />accordance with methods described in the Division guidance document <br />entiCled Guidelines for Conducting Whole Effluent Toxicity Tests. <br />As general information, chronic toxicity occurs when there is a <br />statistically significant difference in survival, growth or <br />reproduction for either species. <br />12. Toxicity Reonener <br />This permit may ba reopened and modified (following proper <br />administrative procedures) to include new compliance daces, additional <br />or modified numerical permit limitation, 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 .cxicancs if ore or <br />more of the following events occur: <br />a) Toxicity has been demonstrated in the effluent and the permit does <br />noC COriCa in an [oX1CiCy LimitdClOn. <br />b) The THE results indicate chat the toxicant (s) represent <br />pollutant(sl that may be controlled with specific numerical <br />limits, and the permit issuing authority agrees that the numerical <br />controls are the most appropriate course of action. <br />c) The THE reveals ocher unique conditions or characteristics which, <br />in the opinion of the permit issuing authority, justify the <br />incorporation of unanticipated special conditions in the permit. <br />Revised 12/30/91 <br />