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1 <br /> CALIFORNIA LABORATORY SERVICES <br /> Page 3 of 4 12/21/17 14:03 <br /> ' Precision Enviro-Tech Project: 7121327 <br /> 3935 N.Coronado Ave Project Number. [none] CIS Work Order k:171.0647 <br /> Stockton,CA 95204 Project Manager Jonathan Le COC R: <br /> ' EDB and DBCP by EPA Method 504.1 -Quality Control <br /> ' Reporting Spike Source %RHC RPD <br /> Analyte Result Limit Units Level Result %REC Lomita RPD Limit Notes <br /> Batch 1709713-EPA 504.1 <br /> Mauk(1709713-BLKI) Prepared&Analyzed: 12/18/17 <br /> Ethylene dibromide ND 0.020 pg/L <br /> 1,2-Dibromo-3-ddompropane ND 0.010 " <br /> ' LCS(1709713-13SI) Prepared&Analyzed: 12/18/17 <br /> Ethylene dibromide 0.247 0.020 pg/L 0.286 87 60-140 <br /> 1,2-Dibroneo-3-chloropropme, 0.318 0.010 0.286 III 60-140 <br /> ' LCS Dup(1709713-BSDI) prepared&Analyzed: 12/18/17 <br /> Ethylene dibromide 0.285 0.020 149/1, 0.286 too 60-140 14 30 <br /> 12-Dibromo-3-chimapropane 0.342 0.010 0.286 120 60-140 7 30 <br /> ' Matrix Spike(1709713-MSI) Source: 17L0509-01 Prepared&Analyzed: 12/18/17 <br /> Ethylene dibromide 0.290 0.020 µg2 0.286 ND 101 60-140 <br /> 12-Dibromo-3-chloropropme 0.346 0.010 0.286 ND 121 60-140 <br /> ' Matrix Spike Dep(1709713-MSDI) Somme 17LOSOMI Prepared&Analyzed: 12/18/17 <br /> Ethylene dibromido 0.291 0.020 µ81L 0.286 ND 102 60-140 0.5 30 <br /> 12-Dibromo-3-chlompropene 0.342 0.010 0.286 ND 120 60-140 1 30 <br /> ' CA SWRCB ELAP Accreditation/Registration Number 1233 <br /> ' 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax page 9 of 10 <br />