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\ 1534 Willow Peres Road,Pittsburg,CA 94565-1701 <br /> McCampbell Analytical, Inc. Toll Free Telephone:(877)252-9262/Fu:(925)252-9269 <br /> ,When Quality Counts I httpJAw ,mccampbeB.com/E-mal:main@mccempbell.com <br /> Quality Control Report <br /> Client: CH2MIML WorkOrder: 1712687 <br /> Date Prepared: 12/18/17 BatchID: 150359 <br /> Date Analyzed: 12/18/17- 12/19/17 Extraction Method: SW50301B <br /> Instrument: GC10,GC28 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: 693815.TM.VA.01.00;PG&E 2017 Cntl Valley S- Sample ID: MB/LCS-150359 <br /> 600 MCDnldlslStn 1712761-OOIAMS/MSD <br /> QC Summary Report for SW8260B <br /> Analyte MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> Result Result Val Val %REC %REC Limits Limit <br /> Acetone 0.923 0.911 1 ND 92 91 36-141 1.25 20 <br /> tert-Amyl methyl ether(TAME) 0.0390 0.0391 0.050 ND 78 78 46-105 0 20 <br /> Benzene 0.0464 0.0441 0.050 ND 93 88 46-124 4.94 20 <br /> Bromobenzene 0.0479 0.0465 0.050 ND 96 93 50-119 2.99 20 <br /> Bromochloromethane 0.0475 0.0453 0.050 ND 95 91 42-122 4.76 20 <br /> Bromodichloromethane 0.0411 0.0403 0.050 ND 82 81 48-112 1.92 20 <br /> Bromoform 0.0348 0.0336 0.050 ND 70 67 36-90 3.45 20 <br /> Bromomethane 0.0485 0.0450 0.050 ND 97 90 10-149 7.44 20 <br /> 2-Butanone(MEK) 0.146 0.149 0.20 ND 73 74 43-114 1.87 20 <br /> t-Butyl alcohol(TBA) 0.164 0.168 0.20 ND 82 84 33-123 2.53 20 <br /> n-Butyl benzene 0.0626 0.0586 0.050 ND 125 117 40-185 6.64 20 <br /> sec-Butyl benzene 0.0642 0.0599 0.050 ND 128 120 40-183 6.90 20 <br /> tert-Butyl benzene 0.0616 0.0578 0.050 ND 123 115 44-168 6.37 20 <br /> Carbon Disulfide 0.0542 0.0488 0.050 ND 108 98 23-139 10.3 20 <br /> Carbon Tetrachloride 0.0450 0.0415 0.050 ND 90 83 43-133 7.88 20 <br /> Chlorobernzene 0.0464 0.0440 0.050 ND 93 88 51-115 5.46 20 <br /> Chloroethane 0.0399 0.0366 0.050 ND 80 73 16-138 8.78 20 <br /> Chloroform 0.0465 0.0442 0.050 No 93 88 54-117 5.08 20 <br /> Chloromethane 0.0365 0.0326 0.050 ND 73 65 14-128 11.2 20 <br /> 2-Chlorotoluene 0.0556 0.0530 0.050 ND 111 106 54-141 4.94 20 <br /> 4-Chlorotoluene 0.0541 0.0522 0.050 ND 108 104 52-134 3.71 20 <br /> Dibromochloromethane 0.0397 0.0384 0.050 ND 79 77 46-102 3.17 20 <br /> 1,2-Dibromo-3-chloropropane 0.0146 0.0142 0.020 ND 73 71 16-120 2.77 20 <br /> 1,2-Dibromoethane(EDB) 0.0422 0.0401 0.050 ND 84 80 48-113 5.23 20 <br /> Dibromomethane 0.0431 0.0409 0.050 ND 86 82 44110 5.04 20 <br /> 1,2-Dichlorobenzene 0.0430 0.0416 0.050 ND 86 83 43-106 3.42 20 <br /> 1,3-Dichlorobenzene 0.0506 0.0492 0.050 ND 101 98 49-128 2.79 20 <br /> 1,4-Dichlorobenzene 0.0474 0.0456 0.050 ND 95 91 48-120 3.67 20 <br /> Dichlorodifluoromethane 0.0208 0.0169 0.050 ND 41 34 8-63 20.5,F1 20 <br /> 1,1-Dichloroethane 0.0482 0.0452 0.050 ND 96 90 50-122 6.41 20 <br /> 1,2-Dichloroethane(1,2-DCA) 0.0413 0.0399 0.050 NO 83 80 46-116 3.61 20 <br /> 1,1-Dichloroethene 0.0469 0.0425 0.050 ND 94 85 37-124 9.83 20 <br /> cis-1,2-Dichloroethene 0.0467 0.0440 0.050 ND 93 88 47-123 6.14 20 <br /> trans-1,2-Dichloroethene 0.0475 0.0433 0.050 ND 95 87 31-131 9.22 20 <br /> 1,2-Dichloropropane 0.0455 0.0437 0.050 ND 91 87 50-116 3.93 20 <br /> 1,3-Dichloropropane 0.0428 0.0413 0. s, MI15 3.41 20 <br /> 2,2-Dichloropropane 0.0502 0.0470 0. 4 - `38b L4337 6.55 20 <br /> a <br /> (Cont.) DEC 2 7 2017 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> ENVIRONMENTAL HEALTH Page 13 of 26 <br />