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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 91-035 <br /> FOR <br /> THE MARLEY COOLING TOWER COMPANY <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> INTERIM PLANT STARTUP MONITORING <br /> The Interim Plant startup includes batch and continuous operation phases. The <br /> initial three batches of treated water shall be sampled for the parameters <br /> listed below. <br /> Constituents Units Type of Sample Frequency <br /> Total Chromium ug/l Grab* Every 4 hours <br /> Total Chromium ug/l Grab During batch run <br /> Hexavalent Chromium ug/l Grab* Every 2 hours <br /> Hexavalent Chromium ug/l Grab During batch run <br /> Copper ug/l Grab* Every 4 hours <br /> Copper ug/l Grab During batch run <br /> Arsenic ug/l Grab During batch run <br /> Total Dissolved Solids mg/l Grab During batch run <br /> pH pH Units Probe Every 2 hours <br /> Electrical Conductivity umhos/cm Probe Every 2 hours <br /> * These samples shall be analyzed using the HACH DR3000 method. <br /> INTERIM PLANT FULL SCALE OPERATIONS <br /> Influent Monitoring <br /> Influent samples shall be collected from the influent holding tank. Influent <br /> samples shall be representative of the volume and nature of the inflow to the <br /> interim plant. The following shall constitute the influent monitoring <br /> program: <br /> Constituents Units Type of Sample Frequency <br /> Total Chromium ug/l Grab Daily <br /> Hexavalent Chromium ug/l Grab Daily <br /> Copper ug/1 Grab Daily <br /> Arsenic ug/l Grab Daily <br /> Total Dissolved Solids mg/l Grab Daily <br />