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CALIFORNIA LABORATORY SERVICES <br /> 099/22/04 10 07 <br /> ENSR-Sacramento Project Former Unocal 5098,5400 Pff orf 6'r0&,rtW'FNI0426 <br /> 104411 Old Placerville Rd,Suite 210 Project Number 06940-293-130 CICOCC# 41209 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Hentngburg <br /> CAM 17 Metals-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN07142-EPA 7471A <br /> Blank(CN07142-BLKI) Prepared 09/15/04 Analyzed 09/17/04 <br /> Mercury ND 010 mg/kg <br /> LCS(CN07142-BSI) Prepared 09/15/04 Analyzed 09/17/04 <br /> Mercury 0 710 010 mg/kg 0 625 114 75-125 <br /> LCS Dup(CN07142-BSDI) Prepared 09/15/04 Analyzed 09/17/04 <br /> Mercury 0 704 010 mglkg 0 625 113 75-125 0 849 25 <br /> Matrix Spike(CN07142-MS1) Source CN10211-02 Prepared 09/15/04 Analyzed 09/17/04 <br /> Mercury 0 994 0 10 mg/kg 0 625 028 114 75-125 <br /> Matrix Spike Dup(CN07142-MSDI) _ Source CN10211-02 Prepared 09/15/04 Analyzed 09/17/04 <br /> Mercury 0 932 0 10 mg/kg 0 625 028 104 75-125 644 25 <br /> Batch CN07254-EPA 3050B <br /> _Blank(CN07254-BLK1) Prepared&Analyzed 09/20/04 <br /> Arsenic ND 025 mg/kg <br /> Selenium ND 025 " <br /> Thallium ND 025 <br /> LCS(CN07254-BSI) Prepared&Analyzed 09/20/04 �� <br /> Arsenic 538 10 mglkg 500 108 75-125 <br /> Selenium 520 10 500 104 75-125 <br /> Thallium 500 10 500 100 75-125 <br /> LCS Dup(CN07254-BSD1) _ _ _ _� ^mm _Prepared&Analyzed 09/20/04 <br /> Arsenic 498 10 mg/kg 500 996 75-125 772 25 <br /> Selenium 526 10 500 105 75-125 1 15 25 <br /> Thallium 502 10 500 100 75-125 0 399 25 <br /> CA DOI IS FLAP Accredltatton/Regu tratlon Number 1233 <br /> 3249 Fit/gerald Road Rancho Cordova,CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />