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MONITORING AND REPORTING PROGRAM _2_ SAN JOAQUIN COUNTY FOOTHILL SANITARY LANDFILL INCORPORATED FOOTHILL SANITARY LANDFILL FACILITY CLASS III LANDFILL SAN JOAQUIN COUNTY standards are established the Discharger shall determine at each sampling whether there is a statistically significant increase over water quality protection standards for each parameter and constituent analyzed. The ground water surface elevation (in feet and hundredths, MSL) in all wells shall be measured on a quarterly basis and used to determine the direction of ground water flow. This information shall be displayed on a water table contour map and/or ground water flow net for the site. Samples from all wells shall be analyzed for the following parameters and constituents: Sampling Report in & Reporting Parameter/Constituent Units of Frequency Specific Conductance (field) umhos/cm Quarterly pH (field) Number Quarterly (Dissolved) or (Total) Organic Carbon mg/l Quarterly Total Dissolved Solids (TDS) mg/l Quarterly Chloride mg/l Quarterly Sulfate mg/l Quarterly Dissolved Irons mg/l Quarterly Carbonate mg/l Quarterly Bicarbonate mg/l Quarterly Alkalinity mg/l Quarterly Nitrate (as N) mg/l Quarterly Sulfides (including H2S) presence or 2 absence Quarterly Volatile 1 Organics ug/l Annually Aluminum mg/l Annually Antimony mg/l Annually Arsenic mg/l Annually Cadmiumi mg/l Annually Total Chromium (III+VI)1 mg/l Annually Chromium (VI) mg/l Annually Coppfr mg/l Annually Lead 1 mg/l Annually Manganese mg/l Annually Mercury mg/l Annually Nickel mg/l Annually Selenip mg/l Annually Silver 1 mg/l Annually Thalliums mg/l Annually Zinc mg/l Annually t Inauctively Coupled Argon Plasma Atomic Emission Spectroscopy (ICRP) may be usefor analysis of these constituents only. EPA Methods 601 and 602, or EPA Method 624 shall be used. All peaks shall be reported.