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E <br />MONITORING AND REPORTING PROGRAM -7- <br />FOR CITY OF STOCKTON <br />AUSTIN ROAD LANDFILL FACILITY <br />CLASS III LANDFILL <br />SAN JOAQUIN COUNTY <br />4. Ground Water Monitoring <br />Field and laboratory tests shall be reported in the quarterly monitoring reports. All <br />"Monitoring Parameters" shall be graphed so as to show historical trends at each well. <br />The ground water surface elevation (in feet and hundredths, M.S.L.) in all wells shall be <br />measured on a quarterly basis and used to determine the velocity and direction of ground <br />water flow. This information shall be displayed on a water table contour map and/or ground <br />water flow net for the site and submitted with the quarterly monitoring reports. <br />The corrective action monitoring network shall consist of upgradient background monitoring <br />well MW -2, downgradient monitoring wells MW -12 and MW -13 in the upper water bearing <br />zone. Downgradient shallow compliance wells are MW -1 and MW -4. Downgradient deep <br />compliance wells are MW -6 and MW -7. Downgradient extraction wells are EW -1 and <br />is EW -2. Located adjacent to the extraction wells, are observation wells to determine hydraulic <br />effects of ground water extraction on the shallow water -bearing zone and as such these wells <br />are not presently part of the water -quality monitoring network. Other downgradient <br />monitoring points consist of wells MW -10, MW -11, and MW -14. Locations of these wells <br />are shown on Attachment B. Ground water samples shall be collected from all wells at the <br />frequencies and analyzed for the parameters specified in Table 111. As LF -2 is constructed, <br />wells MW -3 and MW -5 will be destroyed and replaced by wells MW -3A and MW -5A which <br />along with MW -2, will serve as upgradeint background wells. <br />E <br />