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Page 24 of 34 <br />tiff eurofins Quality Control - LCS <br />1 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 />Method: <br />EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C <br />Page 2 of 4 <br />Quality Control Sample 10 Type <br />Matrix <br />Instrument Date Prepared <br />Date Analyzed LCS Batch Number <br />00942-4363882 LCS <br />Aqueous <br />GC 42 02/10115 <br />02110/15 12:03 15021CLO41 <br />Parameter <br />Spike Added <br />Conc. Recovered LCS %Rec. %Rec. CL Qualifiers <br />TPH as Gasoline <br />2000 <br />2190 110 <br />78-120 <br />t <br />v <br />0 <br />U <br />0 <br />m <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 />