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PART I <br /> Page 10 of 68 <br /> Permit No.: CO0038776 <br /> specified below. Such monitoring will begin immediately and last for the life of the permit unless otherwise noted. <br /> The results of such monitoring shall be reported on the Discharge Monitoring Report form (See Part I.L.) <br /> Self-monitoring sampling by the permittee for compliance with the effluent monitoring requirements specified in <br /> this permit, shall be performed at the location(s) noted in Part I.A. above. If the permittee, using an approved <br /> analytical method, monitors any parameter more frequently than required by this permit, then the results of such <br /> monitoring shall be included in the calculation and reporting of the values required in the Discharge Monitoring <br /> Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated. <br /> a. Oil and Grease Monitoring: For every permitted feature with oil and grease monitoring, in the event an oil <br /> sheen or floating oil is observed, a grab sample shall be collected, analyzed, and reported on the appropriate <br /> DMR. In addition, corrective action shall be taken immediately to mitigate the discharge of oil and grease. A <br /> description of the corrective action taken should be included with the DMR. <br /> b. Salinity Parameters In order to obtain an indication of the quantity of Salinity, measured as total dissolved <br /> solids (TDS), being discharged from the site the permittee shall monitor the wastewater effluent. Self- <br /> monitoring samples taken in compliance with the monitoring requirements specified in this part shall be taken <br /> at those locations listed in Part I.A. <br /> c. Alternate Limitation Burden of Proof Requirements: In conformance with 40 CFR 434.63, the permittee has the <br /> burden of proof when requesting relief from total suspended solids (TSS), total iron and/or settleable solids <br /> limitations, as appropriate. The alternate limitations apply to outfalls 005, 008, 009, 014, and 015 only. <br /> For rainfall, to waive TSS and total iron limitations, the permittee must prove that the discharge occurred <br /> during the precipitation event, or within 48 hours after measurable precipitation has stopped. In addition, to <br /> waive settleable solids limitations, the permittee must prove that the discharge occurred during the <br /> precipitation event, or within 48 hours after precipitation greater than the 10-year, 24-hour event has stopped. <br /> For snowmelt, to waive TSS and total iron limitations, the permittee must prove that the discharge occurred <br /> during pond inflow from the snow melt event, or within 48 hours after pond inflow has stopped. In addition, to <br /> waive settleable solids limitations, the permittee must prove that the discharge occurred during pond inflow <br /> from the snow melt event, or within 48 hours after pond inflow volume greater than the 10-year, 24-hour event <br /> has stopped. <br /> The permittee must submit documentation that the treatment facilities were properly operated and <br /> maintained prior to and during the storm event with any request for relief from primary limitations. The <br /> division shall determine the adequacy of proof. As part of this determination, the division shall evaluate <br /> whether the permittee could have controlled the discharge in such a manner that primary limitations could <br /> have been met, whether proper sediment storage levels were maintained and the ponds had sufficient water <br /> and sediment capacity for the storm event, plus other relevant factors. All manual pond dewatering must <br /> meet TSS and total iron limitations. <br /> All data/ required by the permit which cannot be reported on applicable discharge monitoring <br /> report forms (DMRs) shall be reported in a letter as an attachment to the DMR. Submittal of documentation of <br /> containment, maintenance and precipitation records above does not exempt the permittee from the <br /> notification requirements of this permit (see NOTIFICATION REQUIREMENTS). <br /> Permitted Feature UST1A (Sylvester Gulch), Permitted Feature Type: receiving water (ambient) <br /> Effluent Limitations Maximum <br /> ICIS Concentrations Monitoring Requirements <br /> Code Effluent Parameter <br /> MWAT Daily Maximum Frequency Sample <br /> Type <br /> 00010 Temp DM (°C) March-Nov, Report Continuous Recorder <br /> starting 7/1/2020 <br /> 00010 Temp DM (°C) December- Report Continuous Recorder <br /> Feb, starting 7/1/2020 <br /> 00010 Temp MWAT (°C) March- Report Continuous Recorder <br /> Nov, starting7/1/2020 <br />