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PART <br /> Page 13 of 67 <br /> Permit No.: COG500000 <br /> b. Crushed Stone,and Construction Sand and Gravel (SIC codes 1422, 1423, 1429, 1442) <br /> Table C.1.2—Applicable Limitations <br /> Limitations Monitoring Frequency <br /> ICIS Parameter 30 day 7 day Daily 2 year Minor Major Sample <br /> Code average average Max. average Facilities Facilities Type <br /> General Permit Requirements <br /> Monthly 2x/month <br /> 50050 Flow, MGD1 Limit in ---- Report --- (Continuous or Recorder/ <br /> cert. p (Continuous or In-situ <br /> Instantaneous2) Instantaneous2) <br /> 00400 pH,s.u. ---- ---- 6.5-9.0 ---- 2x/month Weekly Grab <br /> 84066 Oil and Grease, mg/I ---- ---- ---- ---- 2x/month Weekly Visual; <br /> 03582 Oil and Grease, mg/I ---- ---- 10 ---- Contingent Weekly Grab' <br /> 00530 Total Suspended <br /> 30 45 ---- ---- 2x/month Weekly Grab <br /> Solids, mg/1 <br /> Site Specific Requirements <br /> 515001 Flow,Total, MG' Report Continuous or Continuous or <br /> Quarterly ---- ---- ---- Instantaneous2 Instantaneous2 Calculated <br /> Total <br /> 51500 EG Flow,Total, MG' Report Continuous or Continuous or <br /> Monthly ---- ---- ---- Instantaneous2 Instantaneous2 Calculated <br /> Total <br /> 70295 Total Dissolved Solids,mg/Is Report ---- ---- ---- Quarterly Quarterly Grab <br /> 00665 Total Phosphorus(as <br /> P), mg/I6 Various Various Various ---- Various Various Composite <br /> 00665 Total Phosphorus(as Various ---- ---- ---- Various Various Calculated <br /> 1P), lb/month' <br /> 00665 Total Phosphorous, <br /> cumulative <br /> Ibs/previous 12 Various ---- ---- ---- Various Various Calculated <br /> consecutive months <br /> 01323 Selenium, Potentially <br /> Various ---- Various Various 2x/month Weekly Grab <br /> Dissolved, µg/I <br /> 01323 Selenium, Potentially <br /> Various ---- Various ---- 2x/month Weekly Calculated <br /> Dissolved, Ibs/day' <br /> 00094 Electrical Conductivity Various ---- ---- ---- Quarterly Quarterly Grab <br /> (EC),dS/m <br /> Various Other Pollutants of Grab or <br /> Various ---- Various Various Various Various <br /> Concern Composite <br /> Various Whole Effluent Toxicity(WET) <br /> 3 <br /> Chronic Stat Diff and IC25>_IWC ---- Composites/ <br /> Quarterly Quarterly Test <br /> Acute LC50>100% - ---- Grab <br /> Notes 1-7 are located with Table C.1.1 <br />