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PARTI I Page No. 16 Permit No.: CO-00002 ii. The pennittee must, by December 31, 2008, submit a progress report summarizing the efforts undertaken by the permittee for a site specific limitation for total recoverable iron, in regards to the WQCC hearing for the Upper Colorado River Basin, as well as the WQCC decision from the rulemakit~ig hearing in hme 2008. iii. The petmittee must, by September 30, 2008, s Submit to the Division ar} amendment request for either updating the limitation for total recoverable iron based upon a site specific standard (if approved by the WQCC), or for additional time to meet the limitation which cun~ntly takes effect on January I, 20019. Upon approval of the implementation plan by [he Division, all tetras and conditions of the implemen[atioa plan, including but not limited to [he compliance schedule, will automatically become conditions of this permit. 6. Chronic WF.T Testiue -- Outfalls WTA ,WTB, WTC, WTD, WTE, WTF, WTG, WTH, WTI a. Testing and Reporting Requirements Tests shall be done at the frequeney listed in Part LB1. Test results shat] be reported on the Discharge Monitoring Report (DMR) submitted for the reporting period during which the sample was taken. (i.e., WET testing results for the first calendar quarter ending March 31 shall be reported with the DMR due April 28J The results shall be submitted on the Chronic Toxicity Test report form, available from the Division. Copies of these reports are to be submitted [o both the Division and EPA along with the DMR. The petmittee shall conduct each chronic WET test in general accordance with methods described Short Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Oreanisms, EPA/600/4-89/001 or [he most current edition, except as modified by the most current Division guidance document entitled Guidelines for Conducting Whole Effluent Toxicity Tests. The permittee shall conduct such tests using Ceriodaphnia dubia and fathr2 minnows. Alternative Tesi Method As the discharges from this facility are occasionally "intermittent discharges", an alternative utethod for sample collection during WET testing maybe needed. The permi'ttee shall collect all needed samples (3) for WET testing on the same day, and store them for future use, if it becomes necessary. If the discharge continues to flow on the days that the subsequent samples would normally have been collected, the permi[tee shall collect the sample in accordance with the EPA guidance document. If the discharge flow has ceased, the permittee shall use the stored samples and ship them to the laboratory as needed. The permittee shall follow the WET sampling guidance found in EPA document EPA-600-4-91-002 when ever possible. b. Failure of Test and Division Notification Outfalls WTB (Outfall 004) and WTE (Outfall 008) -Beginning on the effective date of this permit, a chronic WET test is failed whenever there is a statistically significant difference in l etha]ity hehveen [he control and any effluent concentration less than or equal to the instream waste concentration ("IWC"). The IWC for all outfalls has been. determined to be 100%_ The pennittee must provide written notification of the failure of a WET test to the Division, along with a statement as to whether a Preliminary Toxicity Investigation ("PTI")/Toxicity Identification Evaluation ("TIE") or accelerated testing is being perforated. Notification must be received by the Division within 21 calendar days of the demmtstration of chronic WI;T in Che routine required test. "Demonstration" for the purposes of subparts b., c., d., e. and g. means no later than [he last day of the labora[oty test. outfalls WTA (outfalls 003 and 003), Outfall WTC (Outfall 005), Outfall WTD (Outfall 006), Outfall WTF (Outfall 010), Outfall WTG (Outfall Ol l), and Outfall WTI (Outfall 016 ahd 017) -Beginning on the effective date of the limitation (January 1, 2008) a chronic WET test is failed whenever there is a statistically significant difference in lethality between the control and any effluent concentration less than or equal to the instream waste concentration ("IWC"). The IWC for these outfalls has been determined to be 100%. The petntittee must provide written notification of the failure of a WET test to the Division, along with a statement as to whether a Preliminary Tonicity Investigatimt ("PTI")/Toxicity Identification Evaluatimt ("TIE") or accelerated testing is being performed. Notitication must he received by the Division within 21 calendar days of the demonstratimt of cJtronic WET in the routine required test. "Demonstration" for the purposes of subparts b., c., d., e. and g. means no later than the last day of the laboratory test. Prior to the limitation becoming effective, the pennittee is to monitor and report the WET test results for these outfalls.