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Page 14 of 28 <br />tiff e u rof i ns Quality Control - LCS/LCSD <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 3510C <br />Method: EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C Page 1 of 4 <br />Ouaiity Control Sarnp:e 117 'Type Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number <br />099-15-304-953 LCS Aqueous GC 47 62/11/15 0211211505:24 150211809 <br />099.15-304.953 LCSD Aqueous GC 47 02/11115 0211211505:43 150211R09 <br />Parameter Spike Added LCS Conc. LCS LCSD Conc. LCSD ° Rec. CL RPD RPD CL Qualifier: <br />° Rec. ° Rec. <br />TPH as Diesel 2000 1864 93 1870 93 75-117 0 0-13 <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 />