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SECOND QUARTER 2006 GROUNDWATER TREATMENT FACILITY MONITORING REPORT <br /> FORWARD LANDFILL WDR ORDER NO.R5-2003-0080 <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 conducted on June 3,2006.Table 3 presents the results of the influent monitoring <br /> performed during second quarter 2006. Appendix A contains the influent monitoring field <br /> sampling logs and laboratory results for second quarter 2006. <br /> TABLE 3 <br /> Influent Monitoring Results <br /> Forward Landfill Groundwater Treatment Facility Monitoring Report, Second Quarter 2006 <br /> Analysis Date Parameters Units Results <br /> Field Parametersa <br /> 6/3/06 pH pH units 6.6 <br /> Conductivity µmhos/cm 940 <br /> Turbidity NTU 0 <br /> VOCsb <br /> 6/3/06` 1,1-Dichloroethane µg/L 0.57 <br /> cis-1,2-Dichloroethylene pg/L 0.98 <br /> Tetrachloroethylene pg/L 4.2 <br /> Trichloroethylene pg/L 1.6 <br /> All Other VOCs pg/L Nondetect <br /> aField parameters were analyzed using a calibrated Horiba U-10 water quality meter. <br /> °VOCs were analyzed using EPA Method SW826013. <br /> °Both extraction wells were operational when this sample was collected. <br /> Note: <br /> NTU = nephelometric turbidity units <br /> A compact disc containing historical influent and effluent analytical,pH,and conductivity <br /> data from August 1994 to December 2005 was provided in the Fourth Quarter 2005 <br /> Groundwater Treatment Facility Monitoring Report(CH2M HILL,2006). In accordance with a <br /> conversation with CV Water Board staff,historical and 2006 analytical,pH,and conduc- <br /> tivity data will be provided on compact disc in the fourth quarter 2006 monitoring report <br /> (Atkinson,2006). <br /> During third quarter 2006,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. Influent samples will again be collected during fourth quarter 2006. <br /> 4.0 Works Cited <br /> Atkinson,Ross/Central Valley Regional Water Quality Control Board. 2006. Personal <br /> communication with John Burke/CH2M HILL. April 13. <br /> CH2M HILL.2006.Fourth Quarter 2005 Groundwater Treatment Facility Monitoring Report, <br /> Forward Landfill, WDR Order No. R5-2003-0080. January. <br /> RDD/062060008(CAH3547.DOC) 5 <br />