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CALIFORNIA LABORATORY SERVICES <br /> Committed. Responsive. Flexible. <br /> Page 3 of 4 08/23/19 09:45 <br /> Precision Enviro-Tech Project: 9081413 <br /> 3935 N.Coronado Ave Project Number: (none] CLS Work Order#:19HO995 <br /> Stockton,CA 95204 Project Manager: Jonathan HV Lee COC#: <br /> EDB and DBCP by EPA Method 504.1 - Quality Control <br /> Reporting Spike Source "/uREC RPD <br /> Analyte Result Limit Units Level Result °/6REC Limits RPD Limit Notes <br /> Batch 1906927-EPA 504.1 <br /> Blank(1906927-BLKI) Prepared&Analyzed:08/20/19 <br /> Ethylene dibromide ND 0.020 Ag/L <br /> 1,2-Dibromo-3-chloropropane ND 0.010 " <br /> LCS(1906927-BSI) Prepared&Analyzed:08/20/19 <br /> Ethylene dibromide 0.305 0.020 gg/L 0.286 107 70-130 <br /> 1,2-Dibromo-3-chloropropane 0.311 0.010 0.286 109 70-130 <br /> LCS Dnp(1906927-BSDI) Prepared&Analyzed:08/20/19 <br /> Ethylene dtbromide 0.314 0.020 µg/L 0.286 110 70-130 3 30 <br /> 1,2-Dibromo-3-chloropropane 0.323 0.010 0.286 113 70-130 4 30 <br /> 3249 Fitzgerald Road,Rancho Cordova,CA 9574 1 800.638.7301 1 Tel:916.638.7301 x102 1 Fax:916.638.4510 1 www.californialab.com <br /> Small Business#2916 1 ELAP#1233 1 NAICS#541380 1 CA SWRCB ELAP Accreditation/Registration Number 1233 <br />