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' CALIFORNIA LABORATORY SERVICES <br /> • FO <br /> 09/29/04 13 30 <br /> ENSR-Sacramento Project Former Unocal 5098,5606 ptcl qv gto ' <br /> CLS Wor)�C Omer T' 10746 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 41080 <br /> Sacramento,CA 95827-2508 Project/Manager Ben I Heningburg <br /> 1 CAM 17 Metals- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result °/okEC Limits RPD Limit Notes <br /> Batch CN07369-EPA 3020A <br />' LCS Dup(CN07369-BSD1) Prepared 09/23/04 Analyzed 09/24/04 <br /> Arsenic 949 50 µg/L 100 949 80-120 0 944 20 <br /> Lead 910 50 100 910 80-120 690 20 <br /> Selenium 909 50 n 100 908 80-120 131 20 <br /> Thallium 914 10 100 914 80-120 605 20 <br /> Cadmium 899 50 100 899 80-120 0 444 20 <br /> Chromium 892 50 100 892 80-120 838 20 <br />' Copper 891 so 100 891 80-120 0 894 20 <br /> Nickel 870 so 100 870 80-120 580 20 <br /> Zinc 884 l0 100 884 80-120 224 20 <br />' atrix Spike(CN07369-MSI) Source CNI0762-01 Prepared 09/23/04 Analyzed 09/24/04 <br /> rsenic 113 50 µg1L 100 16 111 75-125 <br /> Lead 999 50 100 072 992 75-125 <br /> Selenium 108 so n 100 34 105 75-125 <br /> Thallium 989 10 100 ND 989 75-125 <br /> Cadmium 954 50 100 ND 954 75-125 <br /> Chromium 111 50 100 15 960 75-125 <br /> Copper 136 so 100 51 850 75-125 <br /> Nickel 897 50 100 70 827 75-125 <br /> Zinc 132 10 100 31 101 75-125 <br /> Matrix Spike Dup(CN07369-MSDI) Source CN10762-01 Prepared 09/23/04 Analyzed 09/24/04 <br /> Arsenic 111 50 pglL 100 16 109 75-125 179 25 <br /> Lead 975 50 100 072 968 75-125 243 25 <br />' Selenium 109 50 100 34 106 75-125 0 922 25 <br /> Thallium 969 10 100 ND 969 75-125 204 25 <br /> Cadmium 945 50 100 ND 945 75-125 0 948 25 <br /> Chromium 108 50 100 15 930 75-125 274 25 <br />' Copper 134 5 0 ii 100 51 830 75-125 148 25 <br /> Nickel 876 5 0 100 70 806 75-125 237 25 <br /> Zinc 131 10 100 31 100 75-125 0 760 25 <br />' CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californlalab.com 916-638-7301 Fax 916-638-4510 <br />