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vce, eurofins <br />Lancaster Laboratories <br />Er vironmental Analysis Report <br />2425 New Holland Pike. Lancaster, PA 17601 • 717-656-2300 • Fax: 717-656-2681 • WWW. Lan casterLabs.com <br />Quality Control Summary <br />Client Name: Chevron Group Number: 1857072 <br />Reported: 10/13/2017 14:31 <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 />Dibromofluoromethane 1,2-DichForoethane-d4 Toluene-d8 4-Bromofluorobenzene <br />9238443 101 99 100 101 <br />9238444 99 96 100 100 <br />9238445 105 103 97 97 <br />9238446 100 97 99 103 <br />9238447 100 96 100 104 <br />9238448 99 98 99 102 <br />9238449 100 98 99 97 <br />Blank 101 97 101 97 <br />LCS 100 100 101 103 <br />MS 99 101 98 103 <br />MSD 99 99 101 102 <br />Limits: 80-120 80-120 80-120 80-120 <br />Analysis Name: UST VOCs + <br />Batch number: Z172763AA <br />Dibromofluoromethane <br />GRO by 8260B-Water <br />1,2-Dichloroethane-d4 Toluene-d8 4-Womofluorolxmane <br />9238440 100 95 99 97 <br />9238450 103 95 99 96 <br />9238458 105 99 98 94 <br />9238462 103 97 100 96 <br />9238463 103 95 99 94 <br />9238464 105 99 100 94 <br />9238465 103 95 100 95 <br />9238466 104 97 99 95 <br />Blank 103 97 99 95 <br />LCS 100 100 99 99 <br />LCSD 99 99 100 98 <br />Limits: 80-120 80-120 80-120 80-120 <br />Analysis Name: BTEX/MTBE/TAME/EDC <br />Batch number: Z172764AA <br />Dilxomofluoromethane 1 ,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br />9238441 101 95 100 99 <br />9238442 106 99 100 95 <br />9238451 104 95 100 94 <br />9238452 102 96 100 100 <br />9238453 105 99 101 97 <br />9238454 104 97 100 98 <br />9238455 107 98 100 94 <br />9238456 105 97 100 96 <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 />Pii##### 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 34 of 42