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ENSR Project# 5555-411-100 1615-1650 11th Ave West Tracy, Callfomia i4 TEG PROJECT#90206C QA/QC DATA -MATRIX SPIKE ANALYSES- SOIL (Sample#SB-T ANALYZED. M199 SPIKED MEASURED % { COMPONENT CONC. CONC. RECOVERY 1,1 DICHLOROETHANE (mg/kg) 0.0100 0.0072 72.0% cis-1,2 DICHLOROETHENE (mg/kg) 0.0100 0.0116 116.0% CHLOROFORM (mg/kg) 0.0100 0,0082 82.0% 1,1,1 TRICHLOROETHANE (mg/kg) 0.0100 0.0084 84.0% CARBON TETRACHLORIDE (mg/kg) 0.0100 0.0094 94.0% 1,2 DICHLOROETHANE (mg/kg) 0.0100 0.0075 75.0% TRICHLOROETHENE (mg/kg) 0.0100 0.0098 98.0% TETRACHLOROETHENE (mg/kg) 0.0100 0.0077 77.0% 1,1,Z 2 TETRACHLOROETHANE (mg/kg) :0.0100 0.0083 63.0% BENZENE (mg/kg) 0.0100 0.0074 74.0% } TOLUENE (mg/kg) 0.0100 0.0066 86.0% ETHYLBENZENE (mg/kg) 0.0100 0.0094 94.0% XYLENES (mg/kg) 0.0300 0.0255 85.0% TRPH (mg/kg) 50.0 52.2 104.4% t ' SPIKED MEASURED % RPD COMPONENT CONC. CONC, RECOVERY 1,1 DICHLOROETHANE (mg/kg) 0.0100 0.0076 76.0% 5.4% cis- 1,2 DICHLOROETHENE (mg/kg) 0.0100 0.0124 124.0% 6.7% CHLOROFORM (mg/kg) 0.0100 0.0084 84,0% 2.4 1,1,1 TRICHLOROETHANE (mg/kg) 0.0100 0.0087 87.0% 3.5% CARBON TETRACHLORIDE (mg/kg) 0.0100 0.0097 97.0% 3_1% 1,2 DICHLOROETHANE (mg/kg) 0.0100 0.0076 76.0% 1.3% TRICHLOROETHENE (mg/kg) 0.0100 0.0102 102.0% 4.0% ' TETRACHLOROETHENE (mg/kg) 0.0100 0.0081 81.0% 5.1% 1,1,Z 2 TETRACHLOROETHANE (mg/kg) 0.0100 0.0075 75.0% 10.1 BENZENE (mg/kg) 0.0100 0.0077 77.0% 4.0'/ TOLUENE (mg/kg) 0.0100 0.0081 81.0% 6.0% ETHYLBENZENE (mg/kg) 0.0100 0.0092 92.0% 2.2% XYLENES (mg/kg) 0.0300 0.0269 89.7% 5.3% TRPH (mg/kg) 50.0 56.8 113.6% 8.4% ACCEPTABLE RPD LIMITS: 15% ANALYSES PERFORMED IN TEG's DHS CERTIFIED MOBILE LAB ANALYSES PERFORMED BY., Mr. Leif Jonsson DATA REVIEWED BY.' Mr. Mark Jerp6ak page 2 Transglobal Environmental Geochemistry 11350 Monier Park Place, Rancho Cordova, CA 95742 Phone: (916) 853-8010 Fax: (916) 853-8020 JJ