SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

MONITORING AND REPORTING PROGRAM -5- USC/A DIVISION OF HYDRITE CHEMICAL COMPANY CLASS II SURFACE IMPOUNDMENT SAN JOAQUIN COUNTY Chloride mg/1 Quarterly Volatile Organicsl µg/1 Semi-Annually Semi-Volatile Organicsl µg/1 Semi-annually Sulfate mg/l Annually Cadmium mg/l Annually Lead mg/1 Annually Mercury mg/l Annually Total Chromium (III + VI) mg/l Annually Arsenic mg/l Annually Beryllium mg/l Annually Cobalt mg/1 Annually Copper mg/l Annually Nickel mg/l Annually Zinc mg/l Annually EPA Methods 601 and 602, EPA Method 624, or EPA Method 8240 shall be used for analysis of volatile organics. EPA Method 625 or EPA Method 8270 shall be used for analysis of semi-volatile organics. Method detection limits and practical quantitation limits shall be reported. All peaks shall be reported, including those which cannot be quantified and/or specifically identified. Field and laboratory tests shall be reported in the quarterly monitoring reports. Electrical Conductivity results shall be submitted on a site contour map. All parameters shall be graphed so as to show historical trends at each well . The ground water surface elevation (in feet and hundredths, M.S.L. ) in all wells shall be measured on a quarterly basis and used to determine the velocity and 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 and submitted with the quarterly monitoring reports. LEACHATE MONITORING Until the surface impoundment is closed, the LCRS sump shall be inspected monthly for leachate generation. Upon detection of leachate in a previously dry LCRS, the Discharger shall immediately sample the leachate and shall continue to sample the leachate at the following frequencies thereafter. Leachate samples shall be analyzed for the parameters and constituents listed under "GROUNDWATER MONITORING" above and the following: