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<br />Permit No: Ct7-0000213 <br />Page 5 <br />A. DEFINTTION OF EFFLUENT LIMITATIONS <br />3. Whole Effluent Toxicity Testine Requirements Acute WET Testi a Outfalls ~y 008 009 Ol l and 012 (Continued) <br />If accelerated testing is being performed, the permittee shall provide written notification of the results within t4 calendar days of <br />completion of dte "Pattern of Toxicity"/"No Toxicity" demonstration. Testing will be at least once every two weeks for up to <br />five tests until 1) two consecutive tests fail or Ihrec of five tests fail, in wLicli case a pamm oftoxicity has been dermnstrated or, <br />2) two consecutive tesb pass or three of five tests pass, in which case no pattern of toxicity has been found. If no pattern of <br />toxicity is found, the toxicity episode is considered to be ended and routine testing is to restmu. Ifapattem oftoxicity is fougd, e <br />PTI/IIE investigation is to be performed. If a pattern of toxicity is not demonstrated but a significant level of erratic toxicity is <br />found, the Division may require an increased frequency of routine monitoring or some other modified approach <br />d. PTI/I'IE <br />rennet is to be provided m the Division at the 30 60 and 90 day oointa of the P"CVIIE imesti lion The Division may extemi <br />the period fez investigation where reasonable justification exists. A request for an extension :nest be made in writing and <br />received before the 120-day doad{ine. Such request must include a justification a~ supporting data for such an extension. <br />The permittee may use the time for investigation to conduct a PTI or move directly into the TIE. A PTI consists ofa briefseareh <br />for possible sources of W13T, which aright reveal causes ofsmh toxicity and appropriate cotrecdve actions more simply and cost <br />effectively than a fomtal TIE. If the PTT allows resolution of the WET incident, the Tffi need not necessarily be conducted. Ifi <br />however, WET is not identified or resolved duffing the PTI, the TIE must be conducted within the allowed 120 day limo frame. <br />Any perqut[ee that is required to conduct a FTf/TIE investigatia~n shall do so in conformance with procedures identifed in tlu <br />following documents, or as subsequently updated: 1) Methods for Aatratic Toxicity Identification Evaluation Phase I Toxicity <br />• Chamcteriaation Procedures.EPA/600Jtr9I/003 Feb. 91 and 2)Medrods for Aquatic Toxicity ldentificationEvaluationPbase <br />II Toxicity Identification Procedures, EPA/600/3-88/035 Feb. 1989. <br />A third docmaent in this series is Methods for Aquatic Toxicity Identification Evahrations. Phase III Toxicity Confirmation <br />Procedures. EPA/600/3-881036 Feb. 1989. As indicated by rite title, this procedtm is imendod m confirm that the suspected <br />toxicant is truly the toxicant This investigation is optional. <br />Within 90 days oftLe determination ofthe textcant ornolater than 210 days aRec demonstmtion oftoxicity, whichavetis sooner, <br />a control program is m be developed aqd received by the Division The program shall set down a ~tLod a~ procedure for <br />elimination of the toxicity to acceptable IeveLs, <br />t:. Request For Relief <br />The permittee may request relief from further investigation and testing Where the totdcaat has not been determned and Hre . <br />Division Las determined suitable treatment does not appear posstble. in requesting such relied the pemrittee shall submit <br />material sutficicnt m establisL the following: <br />i) It has complied with teeny awl conditions of the penal compliance schedule for rho PTI/1'ffi investigation and other <br />appropriate conditions as may Lave been required by the Division; <br />ii) During the period ofthe toxicity incidmtit hasbeen in compliance with all otter permit conditions, incLrdmg, in the case of <br />a POTW, pretreatment requirements; <br />iii) During the period of We toxicity incident ithas properly maintained and operated all facilities and syaterm oftreatment and <br />control; and <br />iv) Despite the ciretan4tances described hr P~BmPbe Ci) a~ (iii) above, the source and/or cause of toxicity could tpt be <br />located or resolved. <br />AMENDED MAY 25.2006 EFFECTIVE JULY 1. 2006 EXPIRATTION DATE MARCH 31.2007 <br />• <br />Attachment 2.05.3(3)-18-7 <br />