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CALIFORNIA LABORATORY SERVICES <br /> 09/22104 10 07 <br /> ENSR-Sacramento Project Former Unocal 5098,5400 CLStwor 0S`odcict CN10426 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-130 COC# 41209 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Henmgburg <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 CN07257-EPA 30508 <br /> LCS(CN07257-BSI) _ Prepared 09/20/04 Analyzed 09/21/04 <br /> Chromium 118 10 mg/kg 100 118 75-125 <br /> Copper 132 10 125 106 75-125 <br /> Lead 253 25 250 101 75-125 <br /> Molybdenum 25 7 10 250 103 75-125 <br /> Nickel 273 10 250 109 75-125 <br /> Silver 294 050 " 250 118 75-125 <br /> Vanadium 274 to 250 110 75-125 <br /> Zinc 277 10 250 111 75-125 <br /> LCS Dup(CN07257-BSDI) _ - —— _—____ Prepared 09/20/04 Analyzed 09/21/04 — T <br /> Antimony 252 25 mg/kg 250 101 75-125 118 25 <br /> Barium 104 10 100 104 75-125 284 25 <br />�llium <br /> 260 0 50 ;i 250 104 75-125 153 25 <br /> nuum 2 30 050 250 920 75-125 000 25 <br /> Cobalt 275 1 0 250 Ito 75-125 108 25 <br /> Chrommm 1 1 9 10 Wo 119 75-125 0 844 25 <br /> Copper 130 1 0 125 104 75-125 153 25 <br /> Lead 25 2 2 5 25 0 1O1 75-125 0396 25 <br /> Molybdenum 258 l 0 25 0 103 75-125 0 388 25 <br />' Nickel 272 1 0 250 109 75-125 0 367 25 <br /> Silver 2 88 050 250 115 75-125 206 25 <br /> Vanadium 269 10 25 0 108 75-125 l 84 25 <br /> Zinc 274 1 0 250 110 75-125 109 25 <br /> Matrix Spike(CN07257-MSI) Source CNI0605-01 Prepared&Analyzed 09/20/04 <br /> Antimony ND 25 mg/kg 250 ND 75-125 QM-05 <br /> Barium 677 10 100 520 157 75 125 QM 05 <br /> Beryllium 2 58 50 250 ND 103 75-125 <br /> Cadmium 245 50 250 l 6 340 75-125 QM 05 <br /> Cobalt 302 10 25 0 8 8 85 6 75-125 <br /> ChroMLUrn 179 10 100 25 129 75-125 Qti4-05 <br /> Copper 29 1 10 12 5 17 96 8 75-125 <br /> CA D011S ELAP A(,creditation/RLgistration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />