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l 1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytic al, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> ,%at "When Quality Countsrr http://www.mccampbell.com/E-mail:main@mccmVbell.com <br /> Quality Control Report <br /> Client: Clean Harbors WorkOrder: 2006B 17 <br /> Date Prepared: 06/24/2020-06/25/2020 BatchID: 200628 <br /> Date Analyzed: 06/25/2020 Extraction Method: E200.8 <br /> Instrument: ICP-MS5 Analytical Method: E200.8 <br /> Matrix: Water Unit: gg/L <br /> Project: 2003281924;Quest Industries Sample ID: MB/LCS/LCSD-200628 <br /> QC Report for Metals (>1% Sediment Content) <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Antimony 242 259 250 97 103 85-115 6.72 20 <br /> Arsenic 250 255 250 100 102 85-115 2.15 20 <br /> Barium 2480 2620 2500 99 105 85-115 5.52 20 <br /> Beryllium 260 279 250 104 112 85-115 6.92 20 <br /> Cadmium 266 267 250 106 107 85-115 0.434 20 <br /> Chromium 260 265 250 104 106 85-115 1.87 20 <br /> Cobalt 254 272 250 102 109 85-115 6.73 20 <br /> Copper 244 249 250 98 100 85-115 1.88 20 <br /> Lead 248 263 250 99 105 85-115 5.87 20 <br /> Mercury 6.19 6.30 6.25 99 101 85-115 1.76 20 <br /> Molybdenum 236 252 250 95 101 85-115 6.33 20 <br /> Nickel 246 253 250 98 101 85-115 2.72 20 <br /> Selenium 243 250 250 97 100 85-115 2.66 20 <br /> Silver 246 265 250 99 106 85-115 7.22 20 <br /> Thallium 251 265 250 100 106 85-115 5.41 20 <br /> Vanadium 264 268 250 106 107 85-115 1.32 20 <br /> Zinc 2430 2470 2500 97 99 85-115 1.57 20 <br /> Surrogate Recovery <br /> Terbium 2370 2530 2500 95 101 70-130 6.56 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 27 of 31 <br />