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Page 11 of 28 <br />tiff e u rof i ns Quality Control - Spike/Spike Duplicate <br />Calscience <br />Cardno ERI Date Received. 02/10/15 <br />601 North McDowell Blvd. Work Order: 15-02-0688 <br />Petaluma, CA 94954-2312 Preparation: EPA 5030C <br />Method: EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C Page 1 of 3 <br />Qual;ly Control Sample ID <br />Type <br />Matrix <br />Instrument <br />Date Prepared <br />Date Analyzed MS/MSD Batch Number <br />W-37-MW4 <br />Sample <br />Aqueous <br />GC 56 <br />02112/15 <br />0211211515:32 1502125011 <br />W-37-MW4 <br />Matrix Spike <br />Aqueous <br />GC 56 <br />02/12115 <br />0211211516:03 1502125011 <br />W-37-MW4 <br />Matrix Spike Duplicate <br />Aqueous <br />Gc 56 <br />02112115 <br />02/12/15 16:35 1502125011 <br />Parameter Sample alllKe MS MS MSD MSD °Rec. CL RPD RPD CL Qualifiers <br />Conc. Added Conc. ° Rec. Conc. %Rec. <br />TPH as Gasoline 55170 100000 161600 106 162300 107 68-122 0 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 />