2010-04-20_PERMIT FILE - C1981025A (2)

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PART A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 1. Effluent Limitations Beginning no later than the effective date of this permit and lasting through the expiration datethe permittee is authorized to discharge from outfall: OOIA (39° 19' 0.083" North Latitude, 107* 18' 0.217" West Longitude), After the sedimentation ponds and prior to discharging to North Thompson Creek. In accordance with the Water Quality Control Commission Regulations for Effluent Limitations, Section62.4, and the Colorado Discharge Permit System Regulations, Section 61.8(2), 5 C.C.R. 1002 -61, the permitted discharge shall not contain effluent parameter concentrations which exceed the following limitations specified below or exceed the specified flow limitation. 2. Monitorine Frequency and Sample Type In order to obtain an indication of the probable compliance or noncompliance with the effluent linitations specified in Part I.A, the permittee shall monitor all effluent parameters at the following frequemies. Such monitoring will begin immediately and last for the life of the permit unless otherwise noted. The results of such monitoring shall be reported on the Discharg Monitoring Report form (See Part I.D.) Self- monitoring sampling by thepermittee for compliance with the monitoring requirements specified above shallte performed at.the following location 001A. If the- permittee, using an approved analyticaLmethod, monitors any parameter-more frequently than required by this permit, then the results of such monitoring shall- be -included in the calculation -and reporting of the values required in. the Discharg : Monitoring Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated. Oil and Grease Monitoring: For every outfall with oil and grease monitoring, in the event an oil sheen or floating oil is observed, a grab sample shall be collected, analyzed, and reported on the appropriate DMR. In addition, corrective action shall be taken immediately to mitigate the discharge of oil and grease. A description of the corrective action taken shouldbe included with the DMR. 3. Salinity Parameters In order to obtain an indication of the quantity of Salinity, measured as total dissolved solids (TDS), being discharged from the site the permittee shall monitor the wastewater effluent Self- monitoring samples taken in compliance with .the monitoring requirements specified below shall betaken at those locations listed in Part IA.2. Where, based on a minimum of 5 samples, the permittee demonstrates to the satisfaction of the Division that the level of total dissolved solids (TDS) in the effluent can be calculated based upon the level of electrical conductivity, the permittee may measure and report TDS in terms of electric& conductivity. • PART Page 3 of 19 Permit No.: CO- 048233 PART A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 1. Effluent Limitations Beginning no later than the effective date of this permit and lasting through the expiration datethe permittee is authorized to discharge from outfall: OOIA (39° 19' 0.083" North Latitude, 107* 18' 0.217" West Longitude), After the sedimentation ponds and prior to discharging to North Thompson Creek. In accordance with the Water Quality Control Commission Regulations for Effluent Limitations, Section62.4, and the Colorado Discharge Permit System Regulations, Section 61.8(2), 5 C.C.R. 1002 -61, the permitted discharge shall not contain effluent parameter concentrations which exceed the following limitations specified below or exceed the specified flow limitation. 2. Monitorine Frequency and Sample Type In order to obtain an indication of the probable compliance or noncompliance with the effluent linitations specified in Part I.A, the permittee shall monitor all effluent parameters at the following frequemies. Such monitoring will begin immediately and last for the life of the permit unless otherwise noted. The results of such monitoring shall be reported on the Discharg Monitoring Report form (See Part I.D.) Self- monitoring sampling by thepermittee for compliance with the monitoring requirements specified above shallte performed at.the following location 001A. If the- permittee, using an approved analyticaLmethod, monitors any parameter-more frequently than required by this permit, then the results of such monitoring shall- be -included in the calculation -and reporting of the values required in. the Discharg : Monitoring Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated. Oil and Grease Monitoring: For every outfall with oil and grease monitoring, in the event an oil sheen or floating oil is observed, a grab sample shall be collected, analyzed, and reported on the appropriate DMR. In addition, corrective action shall be taken immediately to mitigate the discharge of oil and grease. A description of the corrective action taken shouldbe included with the DMR. 3. Salinity Parameters In order to obtain an indication of the quantity of Salinity, measured as total dissolved solids (TDS), being discharged from the site the permittee shall monitor the wastewater effluent Self- monitoring samples taken in compliance with .the monitoring requirements specified below shall betaken at those locations listed in Part IA.2. Where, based on a minimum of 5 samples, the permittee demonstrates to the satisfaction of the Division that the level of total dissolved solids (TDS) in the effluent can be calculated based upon the level of electrical conductivity, the permittee may measure and report TDS in terms of electric& conductivity. •