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Page 7 of 21 <br /> alscience 4� s F G=•5�� y <br /> Z_nvironmental Quality Control - Spike/Spike Duplicate ° r, <br /> — ; ',r �, <br /> aboratories, Inc. <br /> Shell Oil Pipeline Company LP Date Received: 10/21/08 <br /> P.O. Box 2648 Work Order No:. 08-10-1847 <br /> Houston, TX 77252-2648 Preparation: EPA 30506 <br /> Method: EPA 6010B <br /> Project 25705 Patterson Pass Rd., Tracy, CA <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> ;08�10+1832�1 Solld ICP 6300 10!23!08 10124108 081023503 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualiflers <br /> Antimony 72 65 50-115 10 0-20 <br /> Arsenic 105 107 75-125 1 0-20 <br /> Barium 128 122 75-125 1 0-20 3 <br /> Beryllium 109 105 75-125 3 0-20 <br /> Cadmium 109 104 75-125 4 0-20 <br /> Chromium 103 100 75-125 2 0-20 <br /> Cobalt 110 105 75-125 3 0-20 <br /> Copper 110 107 75-125 2 0-20 <br /> Lead 103 100 75-125 2 0-20 <br /> Molybdenum 102 100 75-125 2 0-20 <br /> Nickel 107 106 75-125 0 0-20 <br /> Selenium 104 103 75-125 1 0-20 <br /> Silver 105 99 75-125 5 0-20 <br /> Thallium 92 87 75-125 6 0-20 <br /> Vanadium 101 98 75-125 1 0-20 <br /> Zinc 127 141 75-125 6 0-20 3 <br /> RPD-Relative Percent Difference, CL-Contml Limit <br /> 7440 Lincoln Way, Garden Grope, CA 92841-1427 . TEL:{714)895-5494 . ,.FAX: {714)894-7501 <br />