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eurofins <br />Lancaster Laboratories <br />Environmental Analysis Report <br />2425 New Holland Pike, Lancaster, PA 17601 • 717-656-2300 • Fax: 717-656-2681 • www.LancasterLabs.corn <br />Quality Control Summary <br />Client Name: Chevron Group Number: 1857072 <br />Reported: 10/13/2017 14:31 <br />LCS/LCSD (continued) <br />Analyeis Name LCS Spike LCS LCSD Spike LCSD LCS LCSD LCS/LCSD RPD RPD <br />Added Conc Added Conc %AEC %REC Limits Max <br />ugh 1 ugh 1 ugh 1 ugh1 <br />TPH-GRO N. CA water C6-C12 1100 1038.11 1100 1032.62 94 94 80-120 1 30 <br />Batch number: 17276B20A Sample number(s): 9238464-9238466 <br />TPH-GRO N. CA water C6-C12 1100 1056.68 1100 1030.07 96 94 80-120 3 30 <br />Batch number: 17277A20A Sample number(s): 9238440-9238442,9238455,9238457 <br />TPH-GRO N. CA water C6-C12 1100 1003.01 1100 1030.71 91 94 80-120 3 30 <br />MS/MSD <br />Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br />Analysis Name Unapiked MS Spike MS MSD Spike <br />Cone Added Conc Added <br />ugh 1 ugh 1 ugh 1 ugh 1 <br />Batch number: F172762AA Sample number(s): 9238443-9238449 UNSPK: <br />MSD <br />Conc <br />ugh1 <br />9238445 <br />MS <br />%Roc <br />MSD <br />%Roc <br />MS/MSD <br />Limits <br />RPD RPD <br />Max <br />t-Amyl methyl ether N.D. 20 20.41 20 19.18 102 96 62-124 6 30 <br />Benzene 0.775 20 22.28 20 21.13 108 102 78-120 5 30 <br />1,2-Dichloroethane 0.879 20 21.87 20 21.49 105 103 73-124 2 30 <br />Ethylbenzene N.D. 20 21.67 20 21.13 108 106 78-120 3 30 <br />Methyl Tertiary Butyl Ether N.D. 20 20.46 20 20.18 102 101 75-120 1 30 <br />Toluene N.D. 20 21.3 20 20.77 106 104 80-120 3 30 <br />Xylene (Total) N.D. 60 66.02 60 65.21 110 109 80-120 1 30 <br />Batch number: Z172782AA Sample number(s): 9238439 UNSPK: P239197 <br />Benzene N.D. 20 20.64 20 20.76 103 104 78-120 1 30 <br />Ethylbenzene N.D. 20 20.71 20 20.69 104 103 78-120 0 30 <br />Methyl Tertiary Butyl Ether N.D. 20 19.62 20 19.52 98 98 75-120 0 30 <br />Toluene N.D. 20 21.06 20 21.08 105 105 80-120 0 30 <br />Xylene (Total) N.D. 60 63.82 60 63.36 106 106 80-120 1 30 <br />Surrogate Quality Control <br />Surrogate recoveries which are outside of the QC window are confirmed unless <br />attributed to dilution or otherwise noted on the Analysis Report. For dual <br />column analyses, the surrogate (at least one surrogate for multi-surrogate <br />tests) must be within the acceptance limits on at least one of the two <br />columns. <br />Analysis Name: BTEX/MTBE/TAME/EDC <br />Batch number: F172762AA <br />*- Outside of specification <br />The result for one or both determinations was less than five times the LOQ. <br />The unspiked result was more than four times the spike added. <br />P###### is indicative of a Background or Unspiked sample that is batch matrix QC and was not performed using a sample from this submission group. <br />Page 33 of 42