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A moijam 1 ' Field-Portable Analytical Inc 6105 Main Avenue, Suite 14, Orangevale, CA 95662 (916) 989-6200 1 URS Corporation ' Stockton AASF Groundwater Samples ' Sample Name: Continuing Calibration Verification Sample Depth: NA Analysis: Full Scan File Number: B8030704 ' Analysis Date: 7-Mar-08 Analysis Time: 10:42 Analyst: Dan Schenk 1 Instrument ID: Brain Sample Date: NA Sample Time: NA Dilution Factor: 1 Concentration Amt. Spiked CCV Percent Q Compound (ug/L) (ug/L) Acceptance Recovery 1,1-Dichloroethene 71.0 100 70% - 130% 71.0% Methylene Chloride 71.5 100 70% - 130% 71.5% tert-Butyl Alcohol 125 100 70% - 130% 125% Methyl tert-Butyl Ether 83.4 100 70% - 130% 83.4% trans-1,2-Dichloroethene 76.6 100 --7-0-9/61 30% 76.6% 1,1-Dichloroethane 105 100 70% - 130% 105% cis-1,2-Dichloroethene 70.7 100 70% - 130% 70.7% Diisoprop I Ether 99.3 100 70% - 130% 99.3% Chloroform 79.8 100 70% - 130% 79.8% ' Ethyl tert-Butyl Ether 88.9 100 70% - 130% 88.9% 1,2-Dichloroethane 86.2 100 70% - 130% 86.2% 1,1,1-Trichloroethane 91.2 100 70% - 130% 91.2% Benzene 82.5 100 70% - 130% 82.5% ' Carbon Tetrachloride 96.7 100 70% - 130% 96.7% tert-Am I Methyl Ether 78.6 100 70% - 130% 78.6% Trichloroethene 93.0 100 70% - 130% 93.0% Toluene 75.0 100 70% - 130% 75.0% Tetrachloroethene 89.2 100 --TO-171,- 130% 89.2% Chlorobenzene 86.5 100 70% - 130% 86.5% ' Ethyl Benzene 80.9 100 70% - 130% 80.9% m, -X lene 87.4 100 70% - 130% 87.4% o-Xylene 80.5 100 70% - 130% 80.5% ' TPHg 530 500 70% - 130% 106% TPHd 470 500 70% - 130% 94.0% SS-Dibromofluoromethane Acceptance Criteria 70-130 98.8% SS-Toluene-D8 Acceptance Criteria 70-130 81.9% ' SS-0-Bromofluorobenzene jAcceptance Criteria 70-130 76.5% Unknown Compounds/Notes: