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Page 6 of 11 <br />C alsdence <br />nvironmen#al Quality Control - Laboratory Control Sample <br />A, abora#ories, Inc. <br />Cardno ERI Date Received: N/A <br />601 North McDowell Blvd. Work Order No: 12-06-0513 <br />Petaluma, CA 94954-2312 Preparation: N/A <br />Method: EPA TO -3M <br />Project: ExxonMobil99CAS/022789C <br />Quality Control Sample ID Matrix Instrument Date Analyzed Lab File ID LCS Batch Number <br />098-01-005-3,943 Air GC 60 06/08/12 08000002 12060OL01 <br />Parameter Conc Added Conc Recovered LCS %Rec %Rec CL Qualifiers <br />TPH as Gasoline 932.5 1000 107 80-120 <br />RPD - Relative Percent Difference , CL - Control Limit <br />h" <br />7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />