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MONITORING AND REPORTING PROGRAM FOR CLOSURE OF KEARNEY-KPF SURFACE IMPOUNDMENTS SAN JOAQUIN COUNTY Sampling Report in & Reporting Parameters/Constituent Units of Frequency Nitrate (as N) mg/l Annually Calcium mg/l Annually Iron mg/l Annually Magnesium mg/l Annually Manganese mg/l Annually Potassium mg/l Annually Sodium mg/l Annually Cyanide mg/l Annually Barium mg/l Annually Cadmium' mg/l Annually Copper' mg/l Annually Lead' mg/l Annually Mercury' mg/l Annually Molybdenum' mg/l Annually Silver' mg/l Annually Zinc' mg/l Annually Halogenated Volatile Organics' mg/l Quarterly Inductively Coupled Argon Plasma Atomic Emission Spectroscopy (ICAP) may be used for analysis of these constituents (Method 6010) ' Manual Cold-Vapor Technique (Method 7470) ' Gas Chromatography (Method 8010 or Method 601) The Discharger shall analyze ground water samples for dissolved metals. All newly installed wells shall be sampled and analyzed twice prior to implementing the annual sampling. Cyanide, cadmium, and molybdenum may be deleted from the annual sampling for any well if these analytes are not detected in the first two events, unless the ground water table rises significantly within a year. The Discharger shall determine for the annual sampling whether there is a statistically significant increase over water quality protection standards to be established for each parameter and constituent analyzed. The ground water surface elevation ( in feet and hundredths, msl ) in all wells shall be measured on a monthly basis and used to determine the magnitude, direction(s) and velocity of ground water flow. This information shall be displayed on a water table contour map. In January 1990, the Discharger may begin quarterly ground water surface elevation measurements, but must continue to monitor ground water levels using three continuous recorders.