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MONITORING AND REPORTING PROGRAM <br /> J. R. SIMPLOT COMPANY ' <br /> LATHROP, SAN JOAQUIN COUNTY <br /> CLASS II SURFACE IMPOUNDMENTS MONITORING <br /> Report in Frequency of <br /> Parameter/Constituents Units of Reporting <br /> Minimum Freeboard' feet & tenths Quarterly <br /> Quantity discharged' gallons/day Quarterly <br /> Remaining Capacity' percent Quarterly <br /> Temperature °C Quarterly <br /> PH Standard pH units Quarterly <br /> Specific Conductivity = Rmhos/cm Quarterly <br /> Total Dissolved Solids MCA Quarterly <br /> Sodium mg/1 Quarterly <br /> Chlorides mg/l Quarterly <br /> Sulfates mg/1 Quarterly <br /> Nitrates mg/1 Quarterly <br /> Chemical Oxygen Demand mg/1 Annually <br /> EPA Methods 8010 &8020 constituents` ug/I Annually <br /> Total petroleum hydrocarbons' gg/1 Annually <br /> Metals' mg/l Annually <br /> Mmerals6 mg/! Annually <br /> ' Impoundment Freeboard shall be nieasured weekly <br /> ' Report 30-day average and daily maximum flows <br /> 3 Capacity determination shall incorporate the estimated volume <br /> a Report all peaks <br /> 4 EPA Method 8015 (modified) for gasoline and diesel t <br /> s Total recoverable metals using ICRP methods for alumin r <br /> um, antimony, barium, beryllium, <br /> boron, cadpium, chromium (all valences), cobalt, copper, manganese, molybdenum, nickel, <br /> vanadium and, zinc, and AA(with graphite furnace) methods for arsenic, lead, mercury, <br /> selenium, and thallium <br /> 6 Major cations: calcium, magnesium, sodium, potassium, iron <br /> Major anions: bicarbonate;carbonate, nitrate, chloride, sulfate, total alkalinity <br /> Submit electrical charge balance for each mineral analysis <br /> 7. Stormwater Surface Impoundment Monitoring <br /> The Stormwater Surface Impoundment shall be sampled and analyzed as specified in the table <br /> below and within 24 hours of the first two storms of the wet season that produce significant <br /> flows. Stormwater Surface I;mpoundment•-n3bnitoring reports may be'submitted with the <br /> corresponding quarterly ground water monitoring reports. <br />