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Page 24 of 38 <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> Parsons Date Received: 10/24/08 <br /> 2121 North California Blvd., Suite 500 Work Order No: 08-10-2148 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 30508 <br /> Method: EPA 60108 <br /> Proiect Tracv SPCC/444692 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> SPCC-B-3A-2 Solid ICP 5300 10/24/08 10/24/08 081024S02 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Antimony 16 14 50-115 11 0-20 3 <br /> Arsenic 85 88 75-125 4 0-20 <br /> Barium 4X 4X 75-125 4X 0-20 Q <br /> Beryllium 98 95 75-125 3 0-20 <br /> Cadmium 97 94 75-125 3 0-20 <br /> Chromium 94 86 75-125 3 0-20 <br /> Cobalt 100 96 75-125 3 0-20 <br /> Copper 100 98 75-125 1 0-20 <br /> Lead 99 92 75-125 5 0-20 <br /> Molybdenum 56 53 75-125 5 0-20 3 <br /> Nickel 98 91 75-125 2 0-20 <br /> Selenium 82 76 75-125 6 0-20 <br /> Silver 95 92 75-125 3 0-20 <br /> Thallium 93 91 75-125 2 0-20 <br /> Vanadium 89 81 75-125 4 0-20 <br /> Zinc 91 81 75-125 3 0-20 <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 />