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MONITORING AND REPORTING PROGRAM 6- <br /> J. R. SIMPLOT COMPANY <br /> LATHROP, SAN JOAQUIN COUNTY <br /> TABLE III. CLASS II SURFACE IMPOUNDMENTS MONITORING <br /> Report in Frequency of <br /> Parameter/Constituents Units of Reporting <br /> Field Parameters <br /> Minimum Freeboard' feet&tenths Quarterly <br /> Quantity dischargedz gallons/day Quarterly <br /> Remaining Capacity3 percent Quarterly <br /> Temperature °C Quarterly <br /> pH Standard pH units Quarterly <br /> Specific Conductivity µmhos/cm Quarterly <br /> Monitoring Parameters <br /> Total Dissolved Solids mg/l Quarterly <br /> Sodium mg/1 Quarterly <br /> Chlorides mg/l Quarterly <br /> Constituents of Concern <br /> Sulfates mg/1 Quarterly <br /> Nitrates mg/1 Quarterly <br /> Chemical Oxygen Demand mg/1 Annually <br /> EPA Methods 601 & 602 constituents4 µg/1 Annually <br /> Total petroleum hydrocarbons4 µg/1 Annuallv <br /> Metals5 m9/1 Annually <br /> Minerals6 mg/l Annually <br /> Impoundment Freeboard shall be measured weekly <br /> z Report 30-day average and daily maximum flows <br /> 3 Capacity determination shall incorporate the estimated volume <br /> 4Report all peaks <br /> 3 EPA Method 8015 (modified) for gasoline and diesel <br /> 4 Total recoverable metals using ICAP methods for aluminum, antimony, barium, <br /> beryllium, boron, cadmium, chromium(all valences), cobalt, copper, manganese, <br /> molybdenum, nickel, vanadium and, zinc, and AA (with graphite furnace) methods <br /> for arsenic, lead, mercury, selenium, and thallium <br /> 5 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 />