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TREATEK - CRA COMPANY <br />PROJECT #249-30 <br />MAJOR MART SITE <br />Alpine Way & West Lane, Stockton, CA <br />TEG Project #930309C <br />QA/QC DATA - MATRIX SPIKE ANALYSIS - SOIL <br />SAMPLE <br />DATE <br />GASOLINE <br />BENZENE <br />TOLUENE ETHYLBENZ <br />XYLENES <br />NUMBER <br />ANALYZED <br />(mglkg) <br />(mg/kg) <br />(mg/kg) <br />(mglkg) <br />(mglkg) <br />Spiked Conc <br />3109193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />196 <br />0 651 <br />0 823 <br />0 994 <br />2 615 <br />% Recovery <br />980% <br />651% <br />823% <br />994% <br />872% <br />Spiked Conc <br />3109193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />184 <br />0 671 <br />0 796 <br />0 856 <br />2 338 <br />% Recovery <br />920% <br />671% <br />796% <br />856% <br />779% <br />RPD <br />63% <br />30% <br />33% <br />149% <br />112% <br />Spiked Conc <br />3110193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />213 <br />1 095 <br />0 800 <br />0 928 <br />2 672 <br />% Recovery <br />1065% <br />1095% <br />800% <br />928% <br />891% <br />Spiked Conc <br />3110193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />211 <br />1 081 <br />0 915 <br />0 875 <br />2 483 <br />% Recovery <br />1055% <br />1081% <br />915% <br />875% <br />828% <br />RPD <br />09% <br />13% <br />134% <br />59% <br />73% <br />Spiked Conc <br />3111193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />239 <br />0 923 <br />0 762 <br />0 775 <br />2 312 <br />% Recovery <br />1195% <br />923% <br />762% <br />775% <br />771% <br />Spiked Conc <br />3111193 <br />200 <br />1 000 <br />1 000 <br />1 000 <br />3 000 <br />Measured Conc <br />241 <br />0 912 <br />0 754 <br />0 841 <br />2 465 <br />% Recovery/ <br />1205% <br />912% <br />754% <br />841% <br />822% <br />RPD <br />08% <br />12% <br />1 1% <br />82% <br />64% <br />ACCEPTABLE RPD LIMITS 15% I <br />ANALYSES PERFORMED IN TEG'S DOHS CERTIFIED MOBILE LAB (#1671) <br />ANALYSES PERFORMED BY Mr Leif Jonsson &.W Henry Wilkinson ;i R <br />j DATA REVIEWED BY Mr Mark Jerpbak i��t <br />I <br />�i Transglobal Environmental Geochemistry <br />PO Box 162580, Sacramento, CA 95816 Phone (916) 736-3233 Fax (916) 452-5806 <br />