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_! 1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> McCampbell Analytical Inc. Toll <br /> Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mce mpbeD.com/E-mail:main@mcampbell.com <br /> Quality Control Report <br /> Client: Ponder Environmental Services WorkOrder: 20091333 <br /> Date Prepared: 09/29/2020 BatchID: 206438 <br /> Date Analyzed: 09/29/2020 Extraction Method: SW5030B <br /> Instrument: GC38 Analytical Method: SW8260B <br /> Matrix: Water Unit: µg/L <br /> Project: 20-16350;Flying J Ripon Sample ID: MB/LCS/LCSD-206438 <br /> QC Summary Report for SW8260B <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC °%REC Limits Limit <br /> cis-1,3-Dichloropropene 4.38 4.29 4 109 107 63-119 1.95 20 <br /> trans-1,3-Dichloropropene 4.34 4.27 4 108 107 63-116 1.75 20 <br /> Diisopropyl ether(DIPE) 4.27 4.04 4 107 101 64-128 5.63 20 <br /> Ethylbenzene 4.35 4.04 4 109 101 69-120 7.40 20 <br /> Ethyl tert-butyl ether(ETBE) 4.25 3.97 4 106 99 63-120 6.97 20 <br /> Freon 113 4.18 3.96 4 105 99 67-126 5.37 20 <br /> Hexachlorobutadiene 4.41 3.82 4 110 96 50-140 14.3 20 <br /> Hexachloroethane 4.18 3.59 4 105 90 52-122 15.3 20 <br /> 2-Hexanone 3.93 3.45 4 98 86 39-121 13.0 20 <br /> Isopropylbenzene 4.31 3.82 4 108 96 69-120 12.0 20 <br /> 4-Isopropyl toluene 4.33 3.83 4 108 96 72-122 12.1 20 <br /> Methyl-t-butyl ether(MTBE) 4.11 3.90 4 103 97 60-121 5.29 20 <br /> Methylene chloride 4.44 3.81 4 111 95 40-148 15.1 20 <br /> 4-Methyl-2-pentanone(MIBK) 4.22 3.95 4 105 99 48-115 6.50 20 <br /> Naphthalene 4.22 3.35 4 106 84 62-124 23.0,F2 20 <br /> n-Propyl benzene 4.48 3.96 4 112 99 70-118 12.1 20 <br /> Styrene 4.32 4.02 4 108 100 57-118 7.25 20 <br /> 1,1,1,2-Tetrachloroethane 4.38 3.95 4 110 99 63-117 10.3 20 <br /> 1,1,2,2-Tetrachloroethane 4.20 3.67 4 105 92 60-116 13.3 20 <br /> Tetrachloroethene 4.21 4.04 4 105 101 60-131 3.93 20 <br /> Toluene 4.21 3.95 4 105 99 67-115 6.41 20 <br /> 1,2,3-Tdchlorobenzene 4.42 3.72 4 111 93 60-128 17.4 20 <br /> 1,2,4-Trichlorobenzene 4.46 3.89 4 111 97 61-133 13.7 20 <br /> 1,1,1-Trichloroethane 4.21 3.96 4 105 99 67-124 6.12 20 <br /> 1,1,2-Trichloroethane 4.18 3.84 4 104 96 62-117 8.45 20 <br /> Trichloroethene 4.24 4.08 4 106 102 69-120 3.83 20 <br /> Trichlorofluoromethane 4.15 3.95 4 104 99 60-134 4.88 20 <br /> 1,2,3-Trichloropropane 1.88 1.68 2 94 84 56-120 11.4 20 <br /> 1,2,4-Trimethylbenzene 4.25 3.80 4 106 95 67-124 11.2 20 <br /> 1,3,5-Trimethylbenzene 4.28 3.79 4 107 95 69-122 12.3 20 <br /> Vinyl Chloride 2.08 1.94 2 104 97 52-145 6.66 20 <br /> m,p-Xylene 8.47 8.46 8 106 106 67-119 0.0638 20 <br /> o-Xylene 4.36 4.00 4 109 100 68-120 8.53 20 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 14 of 23 <br />