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alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> ff <br /> J1111111111111111F aboratories, Inc. <br /> I <br /> Klff Analytical Date Received 06/05/04 <br />' 2795 2nd Street, Suite 300 Work Order No 04-06-0385 <br /> Davis, CA 95616-6593 Preparation BPA 30508 <br /> Method EPA 60106 <br />' Project 7-Eleven Store#32262 <br /> Date Date MS[MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br />' EX-1 20' Solid ICP 3300 06/07104 06108104 040607S01 <br />' Parameter MS%REC MSD%R C %R C CL RPO RPD CL Qualifers <br /> Antimony 18 13 50-115 32 0-20 34 <br />' Arsenic 97 95 75-125 2 0-20 <br /> Barium 4X 4X 75-125 4X 0-20 Q <br /> Beryllium 97 95 75-125 3 0-20 <br /> Cadmium 95 92 75-125 4 0-20 <br /> Chromium(Total) 107 98 75-125 5 0-20 <br /> Cobalt 97 92 75-125 4 0-20 <br /> Copper 118 109 75-125 5 0-20 <br /> Lead 95 91 75-125 4 0-20 <br /> Molybdenum 81 78 75-125 3 0-20 <br /> Nickel 99 91 75-125 5 0-20 <br /> Selenium 86 83 75-125 4 0-20 <br />' Silver 108 106 75-125 2 0-20 <br /> Thallium 91 87 75-125 4 0-20 <br /> Vanadium 108 100 75-125 4 0-20 <br />' Zinc 119 162 75-125 8 0-20 <br /> 1 <br /> 1 <br /> 11ZD-Relative Percent Difference CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL (714)895-5494 - FAX (714)894-7501 <br /> 1 T <br />