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CALIFORNIA LABORATORY SERVICES ' <br /> 03-24-0915:17 ' <br /> Geocon Consultants Project: Vintage Car Wash <br /> 3160 Gold Valley Dr.Suite#800 Project Number: S9183-06-01 CLS Work Order#:CSCO819 <br /> Rancho Cordova CA,95742 Project Manager: Kevin Brown COC#:66208 ' <br /> Conventional Chemistry Parameters by APRA/EPA Methods- Quality Control <br /> Reporting Spike Source %REC RPD ' <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CS02166-General Prep ' <br /> Blank(CS02166-BLKI) Prepared&Analyzed:03-23-09 <br /> Hexavalent Chromium ND 1.0 pg/L ' <br /> LCS(CS02166-BSI) Prepared&Analyzed 03-23-09 <br /> Hexavalent Chromium 4.55 1.0 pg/L 5.00 91 80-120 <br /> LCS Dup(CS02166-BSDI) Prepared&Analyzed:03-23-09 ' <br /> Hexavalent Chmmmm 5.09 1.0 pg/L 5.00 102 80-120 11 20 <br /> Matrix Spike(CS02166-MS1) Source:CSCO819-01 Prepared&Analyzed:03-23-09 , <br /> Hexavalent Chromium 16.6 1.0 pg/L 5.00 10.4 123 75-125 <br /> Matrix Spike Dup(CS02166-MSD1) Source:CSC0819-01 Prepared&Analyzed:03-23-09 <br /> Hexavalent Chromium 16.7 1.0 pg/L 5.00 10.4 124 75-125 03-25 <br /> uta" 'o t <br /> 1 <br /> 1 <br /> 1 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 ' <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 ' <br />