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CALIFORNIA LABORATORY SERVICES <br /> WV <br /> CC100/27/04 15 33 <br /> ENSR-Sacramento Project Former Unocal 5098,5400 CLS W rke�ro�r 'CN10481 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293 COC# 41205 <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 FIeningburg <br /> Conventional Chemistry Parameters by APHA/EPA Methods- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> 1 Batch CN07076-601OA/No Digestion <br /> Blank(CN07076-BLKI) Prepared 09/14/04 Analyzed 09/16/04 <br /> Calcium ND 10 mg/L <br /> Magnesium ND 10 <br /> Potassium ND 10 <br /> Sodium ND 10 <br /> Hardness as CaCO3 ND lo " <br /> LCS(CN07076-BSI) Prepared 09/14/04 Analyzed 09/16/04 <br /> Calcium 118 10 mg/L 100 118 80-120 <br /> Magnesium 11 1 1 0 100 lit 80-120 <br /> Potassium l0 3 l 0 100 103 80-120 <br /> Sodium 108 10 100 108 80-120 <br /> LCS Dup(CN07076-BSD1) Prepared 09/14/04 Analyzed 09/16/04 <br /> Calcium 1 1 7 1 0 mg/L 100 117 80-120 0 851 20 <br /> Magnesium 109 1 0 100 109 80-120 1 82 20 <br /> Potassium 106 1 0 too 106 80-120 287 20 <br /> Sodium 107 10 too 107 80-120 0 930 20 <br /> Matrix Spike(CN07076-MS1)_ Source CN10357-01 _ Prepared 09/14/04 _Analyzed 09/16/04 <br /> Calcium 256 1 0 mg/L 100 14 116 75-125 <br /> Magnesium 181 10 too 66 115 75-125 <br /> Potassium 136 1 0 100 27 109 75-125 <br /> Sodium 309 l 0 100 20 109 75-125 <br /> — Matrix Spike Dup(CN07076-MSD1)- - - -Source CN10357-01 -Prepared 09/t4/04 Analyzed 09/16/04- — - - <br /> Calcium 257 10 mg/L 100 14 117 75-125 0 390 25 <br /> Magnesium 18 1 10 100 66 115 75-125 000 25 <br /> Potassium 129 10 too 27 102 75-125 528 25 <br /> Sodium 310 10 100 20 110 75-125 0323 25 <br /> 1 <br /> i6 <br />�1 <br /> CA DOFFS ELAP Ace red itation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californtalab com 916-638-7301 Fax 916-638-4510 <br />