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PARTI <br />Page 7 <br />Permit No. COG-500000 <br />B. EFFLUENT LIMITATIONS AND CONDITIONS -PROCESS WATER DISCHARGE <br />Effluent Parameter <br />Measurement Freouency d/ g/ <br />Sample Type h/ <br />Flow, MGD <br />Oil and Grease, mg/1 i/ <br />pH, s.u. <br />Total Suspended Solids, mg/l <br />Total Dissolved Solids, mg/I a/j/ <br />Total Phosphorus (as P) mg/l f! <br />Weekly <br />Weekly <br />Monthly <br />Monthly <br />Quarterly <br />Quarterly <br />Instantaneous <br />Visual <br />Grab <br />Grab <br />Grab <br />Grab <br />Self-monitoring samples taken in compliance with the monitoring requirements specified above shall be taken <br />at the point of discharge prior to entering waters of the State. <br />b. Mineral mining and processing point source category - 40 CFR 436 - subparts E (gypsum), F (asphaltic <br />mineral), G (asbestos and wollastonite), J (barite), K (fluorspar), L (salines from brine lakes), M (borax), N <br />(potash), O (sodium sulfate), V (bentoni[e), W (magnesite), X (diatomite), Y (jade), Z (novaculite), AF <br />(tripoli), and asphalt batch plants located at any facility otherwise covered by this general permit: <br />No monitoring is required (unless specified by the Division). P.n annual report to the Division on whether or <br />not a discharge of process water has taken place at the facility is required (see Part I.D.3.6 of the perntit). <br />4. Flow D4easurinn Device <br />If not already a part of the permitted facility, within ninety (90) days after the effective date of the certification, a <br />flow measuring device shall be installed to give representative values of effluent quantities at the respective discharge <br />points. A flow measuring device will be applicable et aU designated discharge points of process water. The flow <br />may also be determined by using the pump capacity multiplied by the length of time the pump is operated, provided <br />that the accuracy requirement (see below) is met. <br />When the facility is not operating, and no discharge is occurring (e.g., if i[ is shut down for the winter), a flow <br />measuring device is not required to be on site. <br />A[ [he request of the Water Quality Control Division, or the Environmental Protection Agency, the permittee shall <br />show proof of the accuracy of any Flow-measuring device used in obtaining data submitted in the monitoring report. <br />The Flow-measuring device must indicate values within tau (10) percent of the actual flow being discharged. <br />EFFLUENT LIMITATIONS AND CONDITIONS - STORMWATER DLSCHARGE <br />(This section (I. C) applies to all facilities with a discharge of stormwater.) <br />General Limitations <br />a. Stormwater discharges from the industrial activity shall not cause or threaten to cause pollution, contamination <br />or degradation of any State waters. <br />b. There shall be no discharge of sanitary waste waters from toilets or related facilities. <br />c. No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted <br />by the permit issuing authority. In granting the use of such chemicals, additional limitations and monitoring <br />requirements may be imposed. <br />d. Bulk storage structures for petroleum products and other chemicals shall have adequate protection so as to <br />prevent any reasopable loss of the material from entering discharged waters or waters of the State. <br />