REP36756 - Laserfiche WebLink

Home Browse Search

PART I Pagc vui Permit No. CO-0000396 B. h40NITORIIVG REQUIREMENTS 2. RetwrtinQ of Data (continued) The first duplicate signed copy of each disrLarge monitoring repoR (DMR) shall be submitted to the following agency: U.S. Environmental Protection Agency Water Maoagemeat Division NPDES Branch 8WM~ 999 I8th Street, Suite 500 Deaver, CO 80202-2466 The third and fouRh copies are Cor the permiftoe records. The Disrh° oe Monitoring Report forms shall be filled out accurately and completely in accordance with requirements of this permit and the instructions on the forms. They shall tx sigrred by as authorved person u identified in Part I.D. 3. Acute WET Testine-0ut(ells 004. 023. 024 and 026 (a) Testine end Reoortine Reovirements Tests shall be done at the Croqueacy listed in Part LB.I. Test results shall bo reported along with the Diuharge Monitoring Report (DMR) submitted for the reporting penod during which the sample was taken. (i.e., WET testing results for the first calendar quarter ending March 31 shall be tepoRed with the DMR due Apri] 28J The tesults shall be submitted oa the Aate Tonicity Test report form, available from the Division. Copies of these reporu ere W be submitted to both the Division and EPA along with the DMR. The permittee shall conduU each acute WET' test in general accocdaace with methods described is MUhods (or Measurine the Acute Tonicity of Effluents and Receivin¢ Waters to Freshwater end Marine Oreenisms, EPA/600/4- 90/027 or We most current edition, except as modified by the most cutrrnt Division guidance document entitled Guidelines for Conductive Whole Effluent Tonicity Tests. The permit[ee shall conduct an acute 48-hour WET lest using Daohnie Ma¢na sp., and an acute 96-hour WEf test using fathead minnows. Acute tests will be replacement static tests o(a single effluent grab sample. (b) Failure of Test and Division Notification An acute WET test is failed whenever the LCD, which represents ten estimate of the effluent concentration which is lethal to 50% of the test organisms in the time period prescnbed by the test, is found to be less Ihan or equal to 100% effluent. The permittee must provide written notification of the failure of a WET test to the Division, along with a statement as to whether the Preliminary Tonicity Incident ('PTI')~I'ozicity Identification Evaluation ('TIE') investigation or accelerated testing is being performed (see nett section). Notification mast be received by fhe Division within 14 rrlendar days of the demonstration of acute WET in the routine required test 'Demonslntion' for $e purports of Parts I.B.4(b),(c},(d} and (f) means no later than the last day of the laboratory test. (c) Automatic Compliance Schedule Unon Failure o(Test If a routine acute WET test is failed, the following automatic compliance schedule shall apply. As part of this the permittee shall either: (i) proceed to conduct the PTIlfIE investigation as described in Part I.B.4.(d), or (ii) conduU accelerated testing using the single species found to be more sensitive. 1f accelerated testing is being performed, the pennittee shall provide written notification of Lhe results within 14 calendar days of completion of the "Pattern of Toxic~ly"/"No Toxicity" demonstration. Testing;all.be ar least once every two weeks for up to five tests until I) two consecutive tesLS fail or three of five tests fai}~ tin which tau a pattem of toxicity has bola demonstrated or, 2) two consecutive tesLS pass or three of five tests pass, in which eau no pattem of toxicity has been found.