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s • <br />PART I <br />Page 5 <br />PERMIT NO.: COG-500000 <br />B. EFFLUENT LIMITATIONS AND CONDITIONS (cont'd.) <br />7. Bulls storage structures for petroleum products and other chemicals <br />shall have adequate protection so as to prevent any reasonable loss of <br />the material from entering discharged waters or waters of the State. <br />8. Monitoring Requirements <br />In order to obtain an indication of the probable compliance or <br />noncompliance with the effluent limitations specified in Part I, tfie <br />permittee shall monitor all effluent parameters at the following <br />required frequencies. <br />Effluent Parameter Measurement Frequency d/ e/ Sample Type f/ <br />Flow (mgd) Weekly Instantaneous <br />Total Suspended Solids Monthly Grab <br />031 and Grease p~/ Weekly Visual ar Grab <br />pH Monthly Grab <br />Total Dissolved Solids (TDS) mg/1 h/ Quarterly Grab <br />Total Phosphorus (as P) mg/1 i/ Quarterly Grab <br />Self-monitoring samples taken in compliance with the monitoring <br />requirements specified above shall be taken at the point of discharge <br />prior to entering waters of the State. <br />d/ Monitoring is required only during periods of discharge. If "no <br />discharge" occurs, this shall be reported at the specified <br />frequency. (See Pazt C.) <br />e/ When the measurement frequency indicated is quarterly, the samples <br />shall be collected during March, June, September, and December if <br />a continual discharge occurs. If the discharge is intermittant, <br />then samples shall be collected during the period that discharge <br />occurs. <br />f/ See definitions, Part C. <br />~/ Should a visible sheen of oil be observed a sample shall be <br />collected and analyzed plus immediate action shall be taken to <br />correct the problem. <br />h/ TDS monitoring is only required for facilities discharging in the <br />Colorado River Basin. TDS may be measured as electrical <br />conductivity where a satisfactory correlation with TDS has been <br />established based upon a minimum of five <5) samples. <br />i/ Total Phosphorus monitoring is only required for facilities <br />discharging in the Dillon Reservoir drainage area (i.e. Ten Mile <br />Creek, Snake River, Blue River, all tributaries to the Dillon <br />Reservoir). <br />