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Oil and Grease Visual NA NA NA 2x/month Visual' <br /> 84066 <br /> Oil and Grease, mg/l NA NA 10 Contingent' Grab <br /> 03582 <br /> Site Specific Limitations <br /> Total Flow3, MG Report NA NA Continuous' Calculated <br /> 51500 1 Qrtr Total <br /> Electrical <br /> Conductivity (EC), dS/m Report NA NA Quarterly Grab <br /> 00094 <br /> Selenium, Potentially <br /> Dissolved, ug/l Report NA Report 2x/month Grab <br /> 01323 <br /> 1: Flow -The chronic flow limit is equal to the flow rate provided in the permit application, and will be <br /> stated on the certification. If power is not available, flow may be measured on an instantaneous basis. <br /> 2: Oil and Grease: -A visual observation of the discharge for each permitted outfall must be made <br /> 2 times per month. In the event an oil sheen or floating oil is observed, a grab sample shall be <br /> collected, analyzed, and reported on the DMR. In addition, corrective action shall be taken <br /> immediately to mitigate the discharge of oil. <br /> 3: Total Flow - Total flow is the cumulative flow of the discharge for the quarter in million gallons. If <br /> continuous flow monitoring is not conducted, the permittee must calculate the total flow for the <br /> month or quarter using the 30-day average flow (measured) and the number of days the facility <br /> discharged within the month or quarter. <br /> Permit Limitations and Monitoring Requirements apply to outfalls 002A and 003A as outlined in the <br /> Permit in Parts I.C.1, LID, and I.E. <br /> Crushed Stone and Construction Sand and Gravel Facilities (SIC Codes 1442) <br /> Permitted Feature ID: 002A and 003A <br /> Permitted Feature Type: External Outfall <br /> Limit Set: 2 <br /> Discharge Limitations <br /> Parameter Units <br /> Maximum Concentrations Monitoring Sample <br /> 30-Day 7-Day 2 Year Frequency Type <br /> Average Average Daily Max. Average <br /> Flow', MGD 1.5 NA Report NA Continuous' Recorder' <br /> 50050 <br /> pH, (Minimum- <br /> Maximum) s.u. NA NA 6.5-9.0 NA 2x/month Grab <br /> 00400 <br /> Total Suspended <br /> Solids, mg/1. 30 45 NA NA 2x/month Grab <br /> 00530 <br /> Oil and Grease Visual NA NA NA NA 2x/month Visual' <br /> 84066 <br /> Oil and Grease, mg/l NA NA 10 NA Contingent' Grab <br /> 03582 <br /> Site Specific Limitations <br /> Total Flow3, MG Report NA NA NA Continuous' Calculated <br /> 51500 1 Qrtr Total <br /> Page 2 of 3 ry <br /> 43N-( h rl (_ICCk on%c 1.Denv,�r.0)`<0246-1530 P;0A-692-2000 N Colorado_01 ll ph, RLILd ®{ a <br /> John W 11,,k.nloop (,owmot 1-arr� Wolk.%M-NISPH-1--WCL111\C : tur and ChICIA10(11 .tl(tfti 'r <br />