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Page 16 of 32 <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> ERM Date Received: 04/16/14 <br /> 1277 Treat Blvd Suite 500 Work Order: 14-04-1157 <br /> Walnut Creek, CA 94597-7989 Preparation: EPA 3050B <br /> Method: EPA 6010B <br /> Project: PG&E MDI/0242722 Page 3 of 5 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> 14-04-0784-1 Sample Solid ICP 7300 04/16114 04/17/14 13:24 140416502 <br /> 14-04-0784-1 Matrix Spike Solid ICP 7300 04/16/14 04/17/14 13:25 140416502 <br /> 14-04-0784-1 Matrix Spike Duplicate Solid ICP 7300 04/16/14 04/17/14 13:26 140416502 <br /> Parameter Sample Spike MS MS MSD MSD %Rec.CL RPD RPD CL Qualifiers <br /> Cone. Added Cone. %Rec. Conc. %Rec. <br /> Antimony ND 25.00 14.72 59 11.68 47 50-115 23 0-20 3,4 <br /> Arsenic 2.003 25.00 26.55 98 25.81 95 75-125 3 0-20 <br /> Barium 54.90 25.00 81.60 107 78.14 93 75-125 4 0-20 <br /> Beryllium 0.6047 25.00 26.68 104 26.62 104 75-125 0 0-20 <br /> Cadmium ND 25.00 25.65 103 25.36 101 75-125 1 0-20 <br /> Chromium 17.43 25.00 39.20 87 41.30 95 75-125 5 0-20 <br /> Cobalt 7.141 25.00 35.36 113 32.48 101 75-125 8 0-20 <br /> Copper 6.214 25.00 32.33 104 32.53 105 75-125 1 0-20 <br /> Lead 4.604 25.00 29.64 100 29.95 101 75-125 1 0-20 <br /> Molybdenum ND 25.00 24.05 96 22.85 91 75-125 5 0-20 <br /> Nickel 9.680 25.00 35.02 101 34.78 100 75-125 1 0-20 <br /> 0 <br /> Selenium ND 25.00 22.42 90 21.12 84 75-125 6 0-20 <br /> Silver ND 12.50 12.85 103 12.57 101 75-125 2 0-20 <br /> Thallium ND 25.00 24.99 100 24.04 96 75-125 4 0-20 <br /> Vanadium 32.21 25.00 47.78 62 55.59 93 75-125 15 0-20 3 <br /> Zinc 27.29 25.00 48.62 85 50.72 94 75-125 4 0-20 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 • TEL:(714)895-5494 - FAX:(714)894-7501 <br />