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Page 12 of 22 <br /> a/science ' <br /> ; =nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> Kiff Analytical Date Received: 01/17/09 <br /> 2795 2nd Street, Suite 300 Work Order No: 09-01-1418 <br /> Davis, CA 95616-6593 Preparation: EPA 30508 <br /> Method: EPA 60106 <br /> Project Stockton Promenade <br /> Date Date MS/MSD Batch ' <br /> Quality Control sample ID Matrix Instrument Prepared Analyzed Number <br /> 09-01.1489-7 Solid ICP 5300 01121109 01/22109 090121505 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Cadmium 101 101 75-125 0 0-20 <br /> Chromium 98 97 75-125 1 0-20 <br /> Lead 100 101 75-125 0 0-20 <br /> Nickel 104 98 75-125 3 0-20 <br /> Zinc 140 106 75-125 9 0-20 3 <br /> �RPD <br /> A-RelatrwPercent Difference, CL-ContralUrntt <br /> ` 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714)895-5494 . FAX: (714)894-7501 ' <br />