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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />_ M c C a m p be I I Analytical. Inc . Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />When Quality Counts" httpJ/www.mccampbell.com / E-mul: mahi@mccan3pbeR.com <br />Client: Terracon <br />Date Prepared: 04/07/2022 - 04/08/2022 <br />Date Analyzed: 04/07/2022 - 04/08/2022 <br />Instrument: GC38 <br />Matrix: Drinking Water <br />Project: NA227026; JPM <br />Quality Control Report <br />WorkOrder: 2204266 <br />BatchID: 243034 <br />Extraction Method: E524.3 <br />Analytical Method: E524.3 <br />Unit: gg/L <br />Sample ID: MB/LCS/LCSD-243034 <br />QC Summary Report for E524.3 <br />Analyte <br />MB <br />Result <br />MDL RL <br />SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />1,2-Dibromo-3-chloropropane <br />ND <br />0.0084 0.010 <br />- <br />- <br />- <br />Surrogate Recovery <br />tert-Butyl methyl ether -d3 <br />1.1 <br />1 <br />106 <br />70-130 <br />4 -BFB <br />0.95 <br />1 <br />95 <br />70-130 <br />1,2 -dichlorobenzene -d4 <br />1.1 <br />1 <br />106 <br />70-130 <br />Analyte <br />LCS <br />Result <br />LCSD SPK <br />Result Val <br />LCS LCSD <br />%REC %REC <br />LCS/LCSD RPD <br />Limits <br />RPD <br />Limit <br />1,2-Dibromo-3-chloropropane <br />0.10 <br />0.11 0.10 <br />104 <br />106 <br />70-130 1.70 <br />20 <br />Surrogate Recovery <br />tert-Butyl methyl ether -d3 <br />1.0 <br />1.0 1 <br />101 <br />104 <br />70-130 2.48 <br />20 <br />4 -BFB <br />0.96 <br />0.96 1 <br />96 <br />96 <br />70-130 0.292 20 <br />1,2 -dichlorobenzene-& <br />1.0 <br />1.0 1 <br />103 <br />104 <br />70-130 1.15 <br />20 <br />CA ELAP 1644 <br />Page 7 of 11 <br />