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THIRD QUARTER 2008 GROUNDWATER TREATMENT FACILITY MONITORING REPORT <br /> FORWARD LANDFILL WDR ORDER NO.R5-2003-0080 <br /> TABLE 2 <br /> Effluent Monitoring Results <br /> Third Quarter 2008 Groundwater Treatment Facility Monitoring Report,Forward Landfill WDR Order No.R5-2003-0080 <br /> Analysis Date Parameters Units Results <br /> Field Parametersa <br /> 7/01/08 pH pH units 7.6 <br /> Conductivity µmhos/cm 930 <br /> 8/04/08 pH pH units 7.7 <br /> Conductivity µmhos/cm 1,000 <br /> 9/3/08 pH pH units 7.5 <br /> Conductivity µmhos/cm 1,020 <br /> Laboratory Analysesb <br /> 7/01/08° All VOCs gg/L Nondetect <br /> Total dissolved solids milligrams per liter 619 <br /> 8/04/08c All VOCs µg/L Nondetect <br /> 9/03/08` All VOCs gg/L Nondetect <br /> aField parameters were analyzed using a calibrated Horiba U-10 water quality meter. <br /> bVOCs were analyzed using U.S. Environmental Protection Agency Method SW8260B.Total dissolved solids <br /> were analyzed using U.S. Environmental Protection Agency Method 160.1. <br /> °Both extraction wells were operational when this sample was collected. <br /> Notes: <br /> µg/L = micrograms per liter <br /> µmhos/cm = micromhos per centimeter <br /> The current WDRs stipulate that the concentration limit for VOCs in the effluent is non- <br /> detect. No VOCs were detected in the GTF effluent samples collected during the third <br /> quarter 2008. <br /> Under WDR Order No. R5-2003-0080,influent sampling for pH,specific conductivity, <br /> turbidity,and VOCs,is performed semiannually.Influent samples are collected from a <br /> sample port in the header pipe adjacent to the air stripper.Semiannual influent monitoring <br /> was not performed during third quarter 2008. <br /> A compact disc containing historical influent and effluent analytical,pH,and conductivity <br /> data from August 1994 to December 2007,was provided in the Fourth Quarter 2007 <br /> Groundwater Treatment Facility Monitoring Report(CH2M HILL,2008). In accordance with <br /> a conversation with Central Valley Regional Water Quality Control Board staff,historical <br /> and 2008 analytical,pH,and conductivity data will be provided on compact disc in the <br /> fourth quarter 2008 monitoring report(Atkinson,2006,personal communication). <br /> During fourth quarter 2008,effluent samples will be collected monthly and analyzed for pH, <br /> specific conductivity,and VOCs.One quarterly effluent sample will be analyzed for total <br /> dissolved solids. One annual effluent sample will be analyzed for dissolved inorganics.In <br /> addition,one set of influent samples will be analyzed for pH,specific conductivity, <br /> turbidity,and VOCs. <br /> RDD082970002(CAH4207.DOC) 3 <br />