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FOURTH QUARTER 2007 GROUNDWATER TREATMENT FACILITY MONITORING REPORT <br /> FORWARD LANDFILL WOR ORDER NO.R5.2003-0080 <br /> TABLE 2 <br /> Effluent Monitoring Results <br /> Fourth Quarter 2007 Groundwater Treatment Facility Monitoring Report,Forward Landfill WDR Order No.R5-2003-0080 <br /> Analysis Date Parameters Units Results <br /> Field Parametersa <br /> 10/2/07 pH pH units 7.6 <br /> Conductivity µmhos/cm 1,170 <br /> 11/2/07 pH pH units 7.8 <br /> Conductivity µmhos/cm 740 <br /> 12/3/07 pH pH units 7.9 <br /> Conductivity µmhos/cm 950 <br /> Laboratory Analysesb <br /> 10/2/07` All VOCs µg/L Nondetect <br /> Total dissolved solids milligrams per liter 609 <br /> 11/2/07° All VOCs µg/L Nondetect <br /> Aluminum µg/L 41.4 Jd <br /> Antimony µg/L 2.4 Je <br /> Arsenic µg/L 3.5 Jf <br /> Barium µg/L 276 <br /> Beryllium µg/L 0.53 J9 <br /> Boron µg/L 337 <br /> Calcium µg/L 92,900 <br /> Chromium µg/L 2.4 Jh <br /> Magnesium µg/L 47,400 <br /> Manganese µg/L 212 <br /> Potassium µg/L 7,410 <br /> Selenium µg/L 15.9 <br /> Sodium µg/L 54,600 <br /> Thallium µg/L 3.9 J <br /> Vanadium µg/L 16.1 <br /> Zinc µg/L 3.6 J <br /> 12/3/07` All VOCs µg/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 /> dThe method detection limit(MDL)and practical quantitation limit(PQL)for aluminum are 19.3 and 100µg/L, <br /> respectively. <br /> eThe MDL and PQL for antimony are 1.8 and 5µg/L,respectively. <br /> fThe MDL and PQL for arsenic are 2.5 and 5µg/L,respectively. <br /> 'The MDL and PQL for beryllium are 0.2 and 2µg/L,respectively. <br /> hThe MDL and PQL for chromium are 1.4 and 5µg/L,respectively. <br /> the MDL and PQL for thallium are 2 and 5µg/L,respectively. <br /> /The MDL and PQL for zinc are 2.3 and 50µg/L,respectively. <br /> Notes: <br /> µg/L = microgram per liter <br /> µmhos/cm = micromhos per centimeter <br /> J = estimated value <br /> RDD/080180002(NLH3684.DOC) 5 <br />