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CALIFORNIA LABORATORY SERVICES , <br /> 04-20-09 11:05 ' <br /> Geocon Consultants Project: Former Vintage Car Wash <br /> 3160 Gold Valley Dr.Suite#800 Project Number: 59183-06-01 CLS Work Order#:CSDO649 <br /> Rancho Cordova CA,95742 Project Manager: Kevin Brown COC#:59322 , <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> Reporting Spike Source ^/oREC RPD ' <br /> Analyte Result Limit Units Level Result °/d2EC Limits RPD Limit Nates , <br /> Batch CS02824-General Prep <br /> Blank(CS02824-BLKl) Prepared&Analyzed:04-16-09 <br /> Hexavalent Chromium ND 1.0 pg/L ' <br /> LCS(CS02824-BSI) Prepared&Analyzed:04-16-09 <br /> Hexavalent Chromium 5.27 1.0 µg/L 5.00 105 80-120 <br /> LCS Dup(CS02824-BSD1) Prepared&Analyzed:04-16-09 ' <br /> Hexavalent Chromium 5.20, 1.0 gglL 5.00 104 80-120 1- 20 <br /> Matrix Spike(CS02824-MS1) Source:CSD0649-01 Prepared&Analyzed 04-16-09 <br /> Hexavalent Chromium 13.5 1.0 pg/L 5.00 7.10 128 75-125 QM-5 ' <br /> Matrix Spike Dup(CS02824-MSDI) Source:CSDO649-01 Prepared&Analyzed:04-16-09 <br /> Hexavalent Chromium 13.8 1.0 µg/L 5.00 7.10 133 75-125 2 25 QM-5 ' <br /> Op- <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 />