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SECOND QUARTER 2008 GROUNDWATER TREATMENT FACILITY MONITORING REPORT <br /> FORWARD LANDFILL WDR ORDER NO.R5-2003.0080 <br /> TABLE 2 <br /> Effluent Monitoring Results <br /> ' Second 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 /> 4/1/08 pH pH units 7.5 <br /> Conductivity µmhos/cm 1,070 <br /> 5/1/08 pH pH units 7.3 <br /> Conductivity µmhos/cm 1,050 <br /> 6/3/08 pH pH units 7.9 <br /> Conductivity µmhos/cm 980 <br /> Laboratory Analysesb <br /> 4/1/08° All VOCs gg/L Nondetect <br /> Total dissolved solids milligrams per liter 605 <br /> 5/1/08° All VOCs µg/L Nondetect <br /> 6/3/08° 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(USEPA)Method SW8260B.Total <br /> dissolved solids 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 /> gg/L = microgram 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 second quarter <br /> 2008. <br /> Under WDR Order No. R5-2003-0080,influent sampling for pH,specific conductivity, <br /> turbidity,and VOCs are 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 May 1,2008.Table 3 presents the results of the influent monitoring <br /> performed during second quarter 2008.Appendix A contains the influent monitoring field <br /> sampling logs and laboratory results for second quarter 2008. <br /> Although not required under WDR Order No. R5-2003-0080,sampling of extracted <br /> groundwater for VOCs was performed at EW-1 and EW-2 on May 1,2008.Tables 4 and 5 <br /> present the results of the monitoring performed at EW-1 and EW-2,respectively,during <br /> second 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 CV Water Board staff,historical and 2008 analytical,pH,and conduc- <br /> tivity data will be provided on compact disc in the fourth quarter 2008 monitoring report <br /> (Atkinson,2006,personal communication). <br /> RDD/082060023(CAH4134.DOC) 3 <br />