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CALIFORNIA LABORATORY SERVICES <br /> Committed. Responsive. Flexible. <br /> Page 3 of 4 05/16/19 14:11 <br /> Precision Enviro-Tech Project: 9050803 <br /> 3935 N.Coronado Ave Project Number: 9050803 CLS Work Order#:19EO652 <br /> Stockton,CA 95204 Project Manager: Jonathan Le COC#: <br /> EDB and DBCP by EPA Method 504.1-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1903834-EPA 504.1 <br /> Blank(1903834-BLKI) _Prepared&Analyzed:05/10/19 <br /> Ethylene dibromide ND 0.020 µg/1. <br /> 1,2-Dibromo-3-chloropropane ND 0.010 " <br /> LCS(1903834-BS1) _ Prepared&_ Analyzed:05/10/19 _ <br /> Ethylene dibromide 0.322 0.020 µSIL 0.286 113 70-130 <br /> 1,2-Dibromo-3-chloropropane 0.314 0.010 0.286 110 70-130 <br /> LCS Dup(1903834-BSDI) _ _ Prepared&Analyzed:05/10/1 <br /> Ethylene dibromide 0.304 0.020 µSIL 0.286 107 70-130 6 30 <br /> 1,2-Dibromo-3-chloropropane 0.292 0.010 0.286 102 70-130 7 30 <br /> Matrix Spike(1903834-MS1) Source:19EO486-01 Prepared&Analyzed:05/10/19 <br /> Ethylene dibromide 0.320 0.020 1.42 0.286 ND 112 65-135 <br /> 1,2-Dibromo-3-chloropropane 0.327 0.010 0.286 ND 114 65-135 <br /> Matrix Spike Dup(1903834-MSD1) Source:19EO486-01 _ _Prepared&Analyzed:05/10/19 <br /> Ethylene dibromide 0.325 0.020 AWL 0.286 ND 114 65-135 1 30 <br /> 1,2-Dibromo-3-chloropropane 0.293 0.010 0.286 ND 103 65-135 11 30 <br /> 3249 Fitzgerald Road,Rancho Cordova,CA 95742 1 800.638.7301 1 Tel:916.638.7301 x102 I 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 />