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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br /> 4W \ Mccampbell Analytical , Inc . Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br /> "When Quality Counts" http://w v.mccmnpbell.coin / E-mail: twin@inccampbell.com <br /> Quality Control Report <br /> Client: CVE Demolition WorkOrder: 1912750 <br /> Date Prepared: 12/12/19 BatchlD: 190563 <br /> Date Analyzed: 12/13/19 - 12/14/19 Extraction Method: SW5030B <br /> Instrument: GC10, GC18 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: D17124; West Side Market Sample ID: MB/LCS/LCSD490563 <br /> QC Summary Report for SW8260B <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> Surrogate Recovery <br /> Dibromo8uoromelhane 0.12 0.125 94 66-112 <br /> Toluene-d8 0.13 0.125 101 92-109 <br /> 4-BF8 0.011 0.0125 89 72-112 <br /> Benzene-d6 0.084 0.1 84 81 -126 <br /> Ethylbenzene-d10 0.10 0.1 100 92-138 <br /> 112-DCB-d4 0.080 0.1 80 68-108 <br /> I <br /> (Cont.) <br /> CA ELAP 1644 • NELAP 4033ORELAP <br /> Page 17 of 34 <br />