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Page 20 of 34 <br />tiff eurofins Quality Control - Spike/Spike Duplicate <br />Calscience <br />Cardno ERI <br />Date Received <br />02/07/15 <br />601 North McDowell Blvd. <br />Work Order: <br />15-02-0565 <br />Petaluma, CA 94954-2312 <br />Preparation: <br />EPA 5030C <br />GC 42 <br />Method: <br />EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C <br />Matrix Spike <br />Page 1 of 3 <br />(. unity Control Sample ID <br />Tvpe <br />Matrix <br />Instrument <br />Date Prepared <br />Date Analyzed MS/MSu batch Numoer <br />15-02.0318.2 <br />Sample <br />Aqueous <br />GC 42 <br />02/10/15 <br />02110/15 12:39 1502105021 <br />15-02.0318-2 <br />Matrix Spike <br />Aqueous <br />GC 42 <br />42110/15 <br />02/10115 13:14 1502105x21 <br />15-02.0318-2 <br />Matrix Spike Duplicate <br />Aqueous <br />GC 42 <br />02/10/15 <br />02/10115 13:49 1502105021 <br />Parameter Sample mike MS MS MSD MSD °oRec. CL RPD RPD CL Qualifiers <br />Conc.. Added Cone. °oRec. Conc. °oRec. <br />TPH as Gasoline ND 2000 2184 109 2195 110 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 />