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MONITORING AND REPORTING PROGRAM _7- <br /> DEFENSE DEPOT TRACY <br /> SAN JOAQUIN COUNTY <br /> Type of Sampling <br /> Constituents Units Sample Frequency <br /> Average Extraction Rate gpm Meter Weekly <br /> ( last 7 days) <br /> Pressure at Time psig Meter Weekly <br /> of Sampling <br /> Water Level ft. MSL Meter Weekly <br /> PERFORMANCE MONITORING WELLS: <br /> The performance monitoring wells for the ground water extraction system shall <br /> include the Ensotech, Inc. wells (MW1 , MW2, MW3, MW4, and MW5) and the RI\FS <br /> wells (LM15, LM62, LM28, LM29, LM53, LM49, LM50, and LM30). These well shall be <br /> monitored as follows: <br /> Type of Sampling <br /> Constituents Units Sample Frequency <br /> Volatile Organics µg/1 Grab Quarterly <br /> (Methods 8010 and 8020) <br /> Specific Conductivity Ahos/cm Grab Quarterly <br /> pH pH Units Grab Quarterly <br /> Temperature ° F/°C Grab Quarterly <br /> Volatile Organics µg/l Grab Quarterly <br /> (Method 8240) <br /> Total Petroleum HCs mg/l Grab Quarterly <br /> (Method 418. 1) <br /> Pesticides - PCBs ug/l Grab Quarterly <br /> (Method 8080) <br /> Metals mg/l Grab Quarterly <br /> (Method 6010) <br /> Arsenic mg/l Grab Quarterly <br /> (Method 7060) <br /> Mercury mg/l Grab Quarterly <br /> (Method 7471) <br /> Selenium mg/l Grab Quarterly <br /> (Method 7740) <br /> Water Level ft. MSL Meter Monthly <br />