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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Ponder Environmental Services WorkOrder: 1906809 <br /> Date Prepared: 6/18/19 BatchID: 179831 <br /> Date Analyzed: 6/18/19 Extraction Method: SW5030B <br /> Instrument: GO Analytical Method: SW802113/801513m <br /> Matrix: Water Unit: gg/L <br /> Project: 19-8007 Stockton Prover Sample ID: MB/LCS/LCSD-179831 <br /> QC Summary Report for SW8021B/8015Bm <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> TPH(g)(C6-C12) ND 23 50 - <br /> MTBE ND 0.36 5.0 - <br /> Benzene ND 0.070 0.50 - - <br /> Toluene ND 0.14 0.50 - - <br /> Ethylbenzene ND 0.070 0.50 - <br /> m,p-Xylene ND 0.10 1.0 - <br /> o-Xylene ND 0.040 0.50 - - - <br /> Surrogate Recovery <br /> aaa-TFT 8.8 10 88 74-117 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> TPH(btex) 64 64 60 107 107 78-116 0 20 <br /> MTBE 10 9.9 10 100 99 72-122 1.57 20 <br /> Benzene 9.8 9.7 10 98 97 81-123 0.561 20 <br /> Toluene 10 10 10 101 101 83-129 0 20 <br /> Ethylbenzene 10 10 10 100 101 88-126 0.311 20 <br /> m,p-Xylene 20 20 20 101 101 80-120 0 20 <br /> o-Xylene 9.8 9.8 10 98 98 80-120 0 20 <br /> Surrogate Recovery <br /> aaa-TFT 8.8 8.8 10 88 88 74-117 0 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 6 of 11 <br />