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MONITORING AND REPORTING PROGRAM FOR -4- <br /> SAN JOAQUIN COUNTY <br /> NORTH COUNTY SANITARY LANDFILL <br /> CLASS III LANDFILL <br /> SAN JOAQUIN COUNTY <br /> Sampling <br /> Report in & Reporting <br /> Parameter/Constituent Units of Freuuency <br /> Sulfate mg/l Quarterly <br /> Dissolved Iron' mg/l Quarterly <br /> Carbonate mg/l Quarterly <br /> Bicarbonate mg/l Quarterly <br /> Alkalinity mg/l Quarterly <br /> Nitrate (as N) mg/l Quarterly <br /> Sulfides (including H2S) presence or absence Quarterly <br /> Volatile Organics2 Ng/l Annually <br /> Aluminum' mg/l Annually <br /> Antimony' mg/l Annually <br /> Arsenic mg/l Annually <br /> Barium mg/l Annually <br /> Cadmium' mg/l Annually <br /> Total Chromium (III+VI)' mg/l Annually <br /> Chromium (VI) mg/l Annually <br /> Copper' mg/l Annually <br /> Lead' mg/l Annually <br /> Magnesium mg/l Annually <br /> Manganese' mg/l Annually <br /> Mercury mg/l Annually <br /> Nickel mg/l Annually <br /> Potasium mg/l Annually <br /> Selenium mg/l Annually <br /> Silver' mg/l Annually <br /> Thallium' mg/l Annually <br /> Zinc' mg/1 Annually <br /> Inductively Coupled Argon Plasma Atomic Emission Spectroscopy <br /> 2 (ICRP) may be used for analysis of these constituents only. <br /> EPA Methods 601 and 602, or EPA Method 624 shall be used. All <br /> peaks shall be reported. <br /> The Discharger shall determine at each sampling whether there is a <br /> statistically significant increase over water quality protection standards <br /> for each parameter and constituent analyzed. <br /> The ground water surface elevation (in feet and hundredths, M.S.L. ) in all <br /> wells shall be measured on a quarterly basis and used to determine the <br /> velocity and direction(s) of ground water flow. This information shall <br /> be displayed on a water table contour map and/or ground water flow net <br /> for the site. <br />