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Lancaster Laboratories <br />Environmental Analysis Report <br />eurofins <br />2425 New Holland Pike, Lancaster, PA 17601 • 717-656-2300 • Fax: 717-656-2681 • www.LancasterLabs.com <br />Sample Description: MW-9C-W-170926 Grab Groundwater ELLE Sample # WW 9238457 <br />GRD Facility# 94054 Job# 17155216 ELLE Group # 1857072 <br />2103 Country Club-Stockton T0607700063 Account # 10906 <br />Project Name: 94054 <br />Collected: 09/26/2017 15:20 by GM Chevron <br />6001 Bollinger Canyon Rd L4310 <br />Submitted: 09/29/2017 09:35 San Ramon CA 94583 <br />Reported: 10/13/2017 14:31 <br />CCS9C <br />CAT <br />No. Analysis Name CAS Number Result <br />Program <br />RL <br />Dilution <br />Factor <br />GC/MS Volatiles SW -846 8260B ugh 1 ugh1 <br />10945 t-Amyl methyl ether 994-05-8 N.D. 2 1 <br />10945 Benzene 71-43-2 N.D. 0.5 1 <br />10945 1,2-Dichloroethane 107-06-2 N.D. 2 1 <br />10945 Ethylbenzene 100-41-4 N.D. 0.5 1 <br />10945 Methyl Tertiary Butyl Ether 1634-04-4 N.D. 2 1 <br />10945 Toluene 108-88-3 N.D. 0.5 1 <br />10945 Xylene (Total) 1330-20-7 N.D. 0.5 1 <br />GC Nrolatiles SW -846 8015B ugh 1 ugh1 <br />01728 TPH-GRO N. CA water C6-C12 n.a. N.D. 50 1 <br />Sample Comments <br />CA ELAP Lab Certification No. 2792 <br />All QC is compliant unless otherwise noted. Please refer to the Quality <br />Control Summary for overall QC performance data and associated samples. <br />Laboratory Sample Analysis Record <br />CAT Analysis Name Method Me Trial# Batch* Analysis Analyst Dilution <br />No. Date and Time Factor <br />10945 BTEx/mTBE/TAmE/Epc SW-846 82603 1 Z172764AA 10/04/2017 07:43 Hu Yang 1 <br />01163 cc/ms VOA Water Prep SW-846 5030B 1 Z172764AA 10/04/2017 07:43 Hu Yang 1 <br />01728 TPH-GRO N. CA water SW-846 8015B 1 17277A20A 10/04/2017 18:20 Brett W Kenyon 1 <br />C6-C12 <br />01146 GC VOA Water Prep SW-846 5030B 1 17277A20A 10/04/2017 18:20 Brett W Kenyon 1 <br />#=Laboratory MethodDetection Limit exceeded target detection limit <br />N.D.=Not detected at or above the Reporting Limit <br />Page 21 of 42