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Page 24 of 36 <br /> alscience <br /> n vironmental � ► <br /> Quality Control - LCSICCs Duplicate <br /> ahoratories Inc. <br /> Cardno ERI Date Received: N/A <br /> 601 North McDowell Blvd. Work Order No: 12-03-1242 <br /> Petaluma, CA 94954-2312 Preparation: EPA 3010A Total <br /> Method: EPA 6010B <br /> Project: ExxonMobil99CAS/022789C <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix histrument Prepared Analad Number <br /> 097-01-003-12,474 Aqueous ICP 5300 03/19/12 03/20/12 120319LA5 <br /> Parameter SPIKE ADDED LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Arsenic 0.5000 103 104 80-120 1 0-20 <br /> Cadmium 0.5000 104 105 80-120 2 0-20 <br /> Lead 0.5000 106 108 80-120 1 0-20 <br /> Selenium 0.5000 101 102 80-120 1 0-20 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> Ulk <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714)894-7501 <br />