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0 <br /> MONITORING AND REPORTING PROGRAM <br /> FOR FOOTHILL SANITARY LANDFILL <br /> CLASS III LANDFILL <br /> SAN JOAQUIN COUNTY <br /> For any given monitored medium, a sufficient number of samples shall be taken from all <br /> Monitoring Points and Background Monitoring Points to satisfy the data analysis <br /> requirements for a given Reporting Period, and shall be taken in a manner that ensures <br /> sample independence to the greatest extent feasible. <br /> Ground water sampling shall also include an accurate determination of the ground water <br /> surface elevation and field parameters (pH, temperature, electrical conductivity, turbidity) <br /> for that Monitoring Point or Background Monitoring Point. Ground water elevations <br /> taken prior to purging the well and sampling for Monitoring Parameters shall be used to <br /> fulfill the ground water gradient/direction analyses required. For each monitored ground <br /> water body, the Discharger shall measure the water level in each well and determine <br /> ground water gradient and direction at least quarterly, including the times of expected <br /> highest and lowest elevations of the water level for the respective ground water body. <br /> Ground water elevations for all background and downgradient wells for a given ground <br /> water body shall be measured within a period of time short enough to avoid temporal <br /> variations in ground water flow which could preclude accurate determination of ground <br /> water gradient and direction. This information shall be included in the quarterly <br /> monitoring reports. <br /> Statistical or non-statistical analysis should be performed as soon as the monitoring data <br /> are available. <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 <br /> ground water flow net for the site and submitted with the quarterly monitoring reports. <br /> The monitoring network shall consist of monitoring wells MW-1, MW-2, and production <br /> well LW-1. Locations of these wells are shown on Attachment B. Any additional <br /> monitoring wells constructed at the site shall be added to the monitoring network. Well <br /> LW-1 may be removed from the monitoring network with the approval of Board Staff. <br /> Samples shall be collected from all wells at the frequency and for the parameters specified <br /> in Table H. Ground water samples shall be analyzed for the monitoring parameters shown <br /> in Table H. <br />