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Page 19 of 32 <br /> alsc%nce <br /> nvironmenta/ Quality Control - Spike/Spike Duplicate <br /> aborator/es, Inc. <br /> Cardno ERI Date Received: 12/21/13 <br /> 601 North McDowell Blvd. Work Order: 13-12-1796 <br /> Petaluma, CA 94954-2312 Preparation: EPA 5030C <br /> Method: EPA 8015B (M) <br /> Project: ExxonMobil 99CAS/022789C Page 1 of 4 <br /> Quality Control Sample ID Type: Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> 13-12.1795.2 Sample Aqueous GC 42 12/30113 12/30113 13:14 131230501 <br /> 13.12.1795.2 Matrix Spike Aqueous GC 42 12130113 92130113 13:49 131230S01 <br /> 13-12-1795-2 Matrix Spike Duplicate Aqueaus GC 42 12130113 12130113 14:24 131234509 <br /> Parameter Samole Soike MS MS MSD MSD ° Rec.CL RPD RPD CL Qualifiers <br /> Conc. Added Conc. °oRec. Conc. %Rec. <br /> TPH as Gasoline ND 2000 1915 96 1898 95 68-122 1 0-18 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 • TEL:(714)895-5494 • FAX:(714)894-7501 <br />