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Page 7 of 17 <br /> C alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> mw aboratories, Inc. <br /> Shell Oil Pipeline Company LP Date Received: 09/25/09 <br /> P.O. Box 2648 Work Order No: 09-09-1933 <br /> Houston, TX 77252-2648 Preparation: EPA 7471A Total <br /> Method: EPA 7471A <br /> Proiect 25705 Patterson Pass Rd., Tracy, CA <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 09-09-1854-1 Solid Mercury 09/30/09 09/30/09 090930502 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Mercury 116 115 71-137 1 0-14 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> NJ <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 • FAX: (714) 894-7501 <br />