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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> t M c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbell.com/E-mail:main(*rnccampbell.com <br /> Quality Control Report <br /> Client: Terracon WorkOrder: 1902D66 <br /> Date Prepared: 3/7/19 BatchID: 174177 <br /> Date Analyzed: 3/7/19 Extraction Method: E524.3 <br /> Instrument: GC45 Analytical Method: E524.3 <br /> Matrix: Drinking Water Unit: itg/L <br /> Project: NA187058;Arrellano Property Sample ID: MB/LCS/LCSD-174177 <br /> QC Summary Report for E524.3 <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> 1,2-Dibromo-3-chloropropane ND 0.012 0.020 - - - <br /> Surrogate Recovery <br /> 1,2-dichlorobenzene-d4 1.1 1 106 70-130 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> 1,2-Dibromo-3-chloropropane 0.090 0.090 0.10 90 90 70-130 0 20 <br /> Surrogate Recovery <br /> 1,2-dichlorobenzene-d4 1.0 1.0 1 104 104 70-130 0 20 <br /> CA ELAP 1644 <br /> Page 7 <br />