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MONITORING AND REPORTING PROGRAM -3- <br /> DEFENSE DEPOT TRACY <br /> SAN JOAQUIN COUNTY <br /> Type of Sampling <br /> Constituents Units Sample Frequency <br /> Mercury mg/l Grab Plan C <br /> (Method 7471) <br /> Selenium mg/l Grab Plan C <br /> (Method 7740) <br /> Total Volume of gallons Meter Plan B <br /> Water Treated <br /> Flow Rate at Time gpm Meter Plan B <br /> of Sampling <br /> Average Flow Rate gpm Meter Plan B <br /> (since last sample) <br /> Pressure at Time psig Meter Plan B <br /> of Sampling <br /> HOLDING POND DIVERSION PIPELINE MONITORING: <br /> The diversion line from the air stripper to the storm drain holding pond shall <br /> be monitored in accordance with the following: <br /> Type of Sampling <br /> Constituents Units Sample Frequency <br /> Total Volume of gallons Meter Daily <br /> Water Transported <br /> Flow Rate at Time gpm Meter Daily <br /> of Sampling <br /> Average Flow Rate gpm Meter Daily <br /> (since last sample) <br /> Pressure at Time psig Meter Daily <br /> of Sampling <br /> EXTRACTION WELL MONITORING: <br /> During the extraction of ground water, the extraction wells EW-1, EW-2, EW-3, EW- <br /> 4, EW-5, and EW-6, shall be monitored as follows: <br /> Type of Sampling <br /> Constituents Units Sample Frequency <br /> Volatile Organics µg/1 Grab Plan D <br /> (Methods 8010 and 8020) <br />