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1534 Wifl w Pass Road,Pittsburg,CA 94565-1701 <br /> McCampbell Analytical, Inc. Toll Fmc Telephone:(877)252-92621 Fn:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbell.com/E-mail:meiv@mccamphell.com <br /> Quality Control Report <br /> Client: Terracon WorkOrder: 1712904 <br /> Date Prepared: 12/21/17 BatchlD: 150676 <br /> Date Analyzed: 12/21/17 Extraction Method: SW5030B <br /> Instrument: GC12 Analytical Method: SW8021B/8015Bm <br /> Matrix: Water Unit: pg/L <br /> Project: I I77G18;Lodi USD High School Sample ID: MB/LCS-150676 <br /> QC Summary Report for SW8021B/8015Bm <br /> Analyte MB RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> TPH(g)(C6-C12) ND 50 - - - <br /> MTBE ND 5.0 - - - <br /> Benzene ND 0.50 - - - <br /> Toluene ND 0.50 - - - <br /> Ethylbenzene ND 0.50 - - - <br /> Xylenes ND 0.50 - - - <br /> Surrogate Recovery <br /> aaa-TFT 11.59 10 116 89-116 <br /> Analyte LCS LCSD SPK LCS LCSD LCSILCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> TPH(btex) 53.6 - 60 89 - 78-116 - - <br /> MTBE 10.6 - 10 106 - 72-122 - - <br /> Benzene 10.9 - 10 109 - 81-123 - - <br /> Toluene 11.0 - 10 110 - 83-129 - - <br /> Ethylbenzene 9.81 - 10 98 - 88-126 - - <br /> Xylenes 25.9 - 30 86,1`3 - 87-131 - - <br /> Surrogate Recovery <br /> aaa-TFT 11.8 - 10 119, F2 - 89-116 - - <br /> NELAP 4033ORELAP <br /> Page 7 of I 1 <br />