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MONITORING AND REPORTING PROGRAM -8- <br />FORWARD INCORPORATED <br />WASTE MANAGEMENT FACILITY <br />SAN JOAQUIN COUNTY <br />Report in Sampling <br />Parameter/Constituent Units of Frequency <br />AA for the following: <br />Mercury mg/1 <br />or µg/l <br />Annually <br />Arsenic mg/l <br />or ug/l <br />Annually <br />Chromium (Hexavalent) mg/l <br />or ug/l <br />Annually <br />Selenium mg/l <br />or Mcg/l <br />Annually <br />EPA Methods 502.1 and 503.1, or 502.2, or Method 524.2 will be used to <br />characterize volatile organics. All peaks will be reported. Unidentified peaks <br />shall be confirmed with Method 524.2. Metals shall be analyzed and reported as <br />totals (except for chromium). <br />The Discharger shall determine at each sampling whether there is a statistically <br />significant increase over water quality protection standards for each parameter <br />and constituent analyzed. <br />Ground Water Quality Protection Standards: <br />New monitoring wells were installed at the Forward., Inc., waste management <br />facility during the summer of 1987. Once four quarters of sampling data have <br />been obtained for the background wells MW -6, MW -8 and MW -12, background values <br />for the ground water indicator parameters will be calculated. Upon acceptance <br />and/or revision by the Board, these background values will be used as Water <br />Quality Protection Standards. <br />If subsequent sampling of "background" monitoring wells indicates significant <br />water quality changes due to either seasonal fluctuations or other reasons <br />unrelated to waste management activities at the site, the Discharger may request <br />modification of these water quality protection standards. <br />The following detection monitoring program shall be implemented at the site to <br />determine compliance with the appropriate vadose zone water quality protection <br />standards. <br />Lysimeters: <br />The following lysimeters will be monitored for appropriate vadose zone indicator <br />parameters at the prescribed frequencies: <br />