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PART <br /> Page 15 of 67 <br /> Permit No.: COG500000 <br /> c. Industrial Sand (SIC code 1446) (continued) <br /> Table C.1.4—Applicable Limitations for process-generated wastewater from facilities that use HF Flotation <br /> Limitations Monitoring Frequency <br /> ICIS Parameter 30 day 7 day 2 year Minor Major Sample <br /> Code average average Daily Max. average Facilities Facilities Type <br /> General Permit Requirements <br /> Monthly 2x/month <br /> 50050 Flow, MGD1 Limit in ---- Report ---- (Continuous or (Continuous or Recorder/ <br /> cert. In-situ <br /> InstantaneousZ) InstantaneousZ) <br /> 00400 pH, s.u. ---- ---- 6.5-9.0 ---- 2x/month Weekly Grab <br /> 84066 Oil and Grease, ---- ---- ---- ---- 2x/month Weekly Visual3 <br /> mg/I <br /> 03582 Oil and Grease, 10 ---- Contingent Weekly Grab <br /> mg/I <br /> 00951 Total Fluoride, 2.0 ---- 2x/month 2x/month Grab <br /> mg/I, <br /> Federal Effluent Limitation Guidelines <br /> 51412 Total Suspended 0.023 Ibs 0.046 Ibs <br /> Solids, Ibs/1000 per 1,000 per 1,000 ---- 2x/month 2x/month Calculated <br /> Ibs production' Ibs total Ibs total <br /> product product <br /> 00951 Total Fluoride, 0.003 Ibs 0.006 Ibs <br /> Ibs/1000 Ibs per 1,000 per 1,000 ---- 2x/month 2x/month Calculated <br /> production' Ibs total Ibs total <br /> product I product <br /> Site Specific Requirements <br /> 515001 Flow,Total, MG Report Continuous or Continuous or <br /> Quarterly ---- ---- ---- InstantaneousZ InstantaneousZ Calculated <br /> Total <br /> 51500 EG Flow,Total, MG Report ---- ---- ---- <br /> Continuous or Continuous or Calculated <br /> Monthly Total InstantaneousZ Instantaneous <br /> 70295 Total Dissolved Report ---- ---- ---- Quarterly Quarterly Grab <br /> Solids, mg/IS <br /> 00665 Total Phosphorus <br /> (as P),mg/16 Various Various Various ---- Various Various Composite <br /> 00665 Total Phosphorus <br /> (as P), Ib/month6 Various ---- ---- ---- Various Various Calculated <br /> 00665 Total Phosphorous, <br /> cumulative <br /> Ibs/previous 12 Various ---- ---- ---- Various Various Calculated <br /> consecutive <br /> months <br /> 01323 Selenium, <br /> Potentially Various ---- Various Various 2x/month Weekly Grab <br /> Dissolved, µg/I <br /> 01323 Selenium, <br /> Potentially Various ---- Various ---- 2x/month Weekly Calculated <br /> Dissolved, Ibs/day' <br /> 00094 Electrical <br /> Conductivity(EC), Various ---- ---- ---- Quarterly Quarterly Grab <br /> dS/m <br />