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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.com <br />Quality Control Summary <br />Client Name: Chevron Group Number: 1857072 <br />Reported: 10/13/2017 14:31 <br />Surrogate Quality Control (continued) <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/mTeE/TAma/enc <br />Batch number: Z172764AA <br />Dibrornofluoromethane 1,2-Dichlorcethane-d4 Toluene-d8 4-Bromolluorobenzene <br />9238457 106 98 101 94 <br />9238459 107 100 99 93 <br />9238460 105 99 99 95 <br />9238461 106 98 99 94 <br />Blank 104 98 100 95 <br />LCS 102 100 101 100 <br />LCSD 100 101 99 98 <br />Limits: 80-120 80-120 80-120 80-120 <br />Analysis Name: aTEx/mTBE <br />Batch number: Z172782AA <br />Dibromdfluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Brornofluorobenzene <br />9238439 106 100 102 96 <br />Blank 106 101 101 95 <br />LCS 104 98 102 102 <br />MS 104 101 102 101 <br />MSD 104 100 101 101 <br />Limits: 80-120 80-120 80-120 80-120 <br />Analysis Name: TPH-GRO N. CA water C6-C12 <br />Batch number: 17276A20A <br />Trifluorotoluene-F <br />9238439 86 <br />9238443 108 <br />9238444 101 <br />9238445 84 <br />9238446 98 <br />9238447 102 <br />9238448 100 <br />9238449 88 <br />9238450 83 <br />9238451 85 <br />9238452 94 <br />9238453 85 <br />9238454 98 <br />9238456 89 <br />9238458 87 <br />9238459 88 <br />9238460 88 <br />9238461 85 <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 35 of 42