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MONITORING AND REPORTING PROGRAM 10 <br /> FOR CITY OF STOCKTON <br /> FRENCH CAMP LANDFILL <br /> CLASS III LANDFILL <br /> SAN JOAQUIN COUNTY <br /> i. The mean (or median, as appropriate) and standard deviation (or other <br /> measure of central tendency, as appropriate) of the constituent's background <br /> data; or <br /> ii. The constituent's MDL, in cases where less than 10% of the background <br /> samples exceed the constituent's MDL: or <br /> c. A concentration limit greater than background, as approved by the Board for use <br /> during or after corrective action. <br /> The Discharger proposes to use intrawell comparisons to detect release of wastes from the <br /> landfill. Sufficient data to demonstrate natural ground water variations between upgradient <br /> and downgradient wells require the use of intrawell comparisons, has not been submitted. <br /> Until a satisfactory demonstration is made, the upgradient well MW-5 will serve as the <br /> background well for the site. Background well MW-1 is known to be impacted and therefore <br /> will not be considered as a background well for the establishment of concentration limits. <br /> Concentration limits for ground water are shown in the following table. <br />