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Page 10 of 17 <br /> alscience <br /> =nvironmental Quality Control - LCS/LCS Duplicate <br /> aboratories, Inc. <br /> Shell Oil Pipeline Company LP Date Received: N/A <br /> P.O. Box 2648 Work Order No: 09-09-1933 <br /> Houston, TX 77252-2648 Preparation: EPA 3050B <br /> Method: EPA 6010B <br /> Project: 25705 Patterson Pass Rd., Tracy, CA <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 097-01-002-12,782 Solid ICP 5300 09/30/09 09/30/09 090930L04 <br /> Parameter LCS%REC LCSD%REC %REC CL ME CL RPD RPD CL Qualifiers <br /> Antimony 101 100 80-120 73-127 2 0-20 <br /> Arsenic 106 102 80-120 73-127 3 0-20 <br /> Barium 110 109 80-120 73-127 1 0-20 <br /> Beryllium 103 101 80-120 73-127 1 0-20 <br /> Cadmium 104 102 80-120 73-127 3 0-20 <br /> Chromium 102 101 80-120 73-127 1 0-20 <br /> Cobalt 113 109 80-120 73-127 3 0-20 <br /> Copper 108 107 80-120 73-127 1 0-20 <br /> Lead 109 105 80-120 73-127 4 0-20 <br /> Molybdenum 108 106 80-120 73-127 2 0-20 <br /> Nickel 109 106 80-120 73-127 3 0-20 <br /> Selenium 99 96 80-120 73-127 3 0-20 <br /> Silver 116 114 80-120 73-127 2 0-20 <br /> Thallium 111 109 80-120 73-127 1 0-20 <br /> Vanadium 102 102 80-120 73-127 0 0-20 <br /> Zinc 105 102 80-120 73-127 3 0-20 <br /> Total number of LCS compounds: 16 <br /> Total number of ME compounds: 0 <br /> Total number of ME compounds allowed: 1 <br /> LCS ME CL validation result: Pass <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />