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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. <br /> FOR <br /> MARLEY COOLING TOWER COMPANY <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> Specific sample station locations shall be established under direction of the <br /> Board's staff and a description of the stations shall be attached to this Order. <br /> Prior to construction, plans and specifications for ground water monitoring <br /> wells shall be submitted to Board staff for review and approval . <br /> EFFLUENT MONITORING <br /> Effluent samples shall be collected Just prior to discharge to the Stockton <br /> Diverting Canal . Effluent samples should be representative of the volume and <br /> nature of the discharge. Time of collection of a grab sample shall be recorded. <br /> The following shall constitute the effluent monitoring program: <br /> Sampling <br /> Constituents Units Type of Sample Frequency <br /> Total Chromium mg/l Grab Once per week <br /> Hexavalent Chromium mg/l Grab Once per week <br /> Arsenic mg/l Grab Once per week <br /> Copper mg/l Grab Once per week <br /> Specific Conductivity umhos/cm Grab Once per week <br /> PH pH Units Grab Once per week <br /> Flow MGD Cumulative Continuous <br /> A visual inspection of the chromium monitor, the conductivity monitor and the <br /> treatment system shall be performed daily. <br />