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PARTI <br />Page 6 <br />Permit No. COG -500000 <br />B. EFFLUENT LIMITATIONS AND CONDITIONS - PROCESS WATER DISCHARGE <br />2. Industry-Specific Numeric Limitations (continued) <br />No process water discharge will be covered under this permit or authorized by certification for discharges with the mineral mining <br />and processing point source category of 40 CFR 436 - subparts E (gypsum), F (asphaltic mineral), G (asbestos and <br />wollastonite), J (barite), K (fluorspar), L (salines from brine lakes), M (borax), N (potash), O (sodium sulfate), V (bentonite), <br />W (magnesite), X (diatomite), Y (jade), Z (novaculite), AF (tripoli). <br />MonitoringReggirements <br />In order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified in Part LB, the <br />permittee shall monitor all effluent parameters at the following required frequencies. <br />Parameter <br /> Measurement Frequency Sample Type <br />Flow, MGD Weekly Instantaneous <br />pH, su. (minimum-noaximum) Monthly In-situ <br />Total Suspended Solids, mg/1 Monthly Grab <br />Oil & Grease, mg/1 Weekly Visual See I.E.9. <br />Total Dissolved Solids, mg/l • Quarterly Grab <br />Total Phosphorus (as P) mg/l ++ Monthly Grab <br />-FF- a w -awl. Ul we l.Ulul auV r VOl "1 "J Vluy. 0= I.L.O.iI. <br />Applicable to waters listed in I.D.g.b. <br />Self-monitoring samples taken in compliance with the monitoring requirements specified above shall be taken at the point of discharge before entering waters of the state. <br />4. Flow Measuring Device <br />If not already a part of the permitted facility, within ninety (90) days after the effective date of the certification, a flow measuring <br />device shall be installed to give representative values of effluent quantities at the respective discharge points. A flow measuring <br />device will be applicable at all designated discharge points of process water. The flow may also be determined by using the pump <br />capacity multiplied by the length of time the pump is operated, if the accuracy requirement (see below) is met. <br />When the facility is not operating, and no discharge is occurring (e.g., if it is shut down for the winter), a flow measuring device is <br />not required to be on site. <br />At the request of the Water Quality Control Division, or the Environmental Protection Agency, the permittee shall show proof of the <br />accuracy of any flow-measuring device used in obtaining data submitted in the monitoring report. The flow measuring device must <br />indicate values within ten (10) percent of the actual flow being discharged. <br />C. EFFLUENT LIMITATIONS AND CONDITIONS - STORMWATER DISCHARGE <br />('this section (I.C) applies to all facilities with a potential discharge of sormwater.) <br />General Limitations <br />a. Stormwater discharges from the industrial activity shall not cause or threaten to cause pollution, contamination, or <br />degradation of any State waters. <br />b. There shall be no discharge of sanitary wastewaters from toilets or related facilities. <br />C. No chemicals are to be added to the discharge unless the permit issuing authority grants permission for the use of a specific <br />chemical. In granting the use of such chemicals, additional limitations and monitoring requirements may be imposed. <br />d. Bulk storage structures for petroleum products and other chemicals shall have adequate protection to prevent any reasonable <br />loss of the material from entering discharged waters or waters of the State. <br />e. All dischargers must comply with the lawful requirements of counties; drainage districts and other state or local agencies <br />regarding any discharges of stormwater to storm drain systems or other watercourses under their jurisdiction.