Laserfiche WebLink
INTRODUCTION <br />' At the request of ExxonMobil Refining and Supply Company,ETIC Engineenng, Inc has prepared <br /> this quarterly groundwater monitoring report for former Exxon Retail Site 7-3708 This report <br />' presents the results for the most recent groundwater monitoring conducted at the site and summarizes <br /> recent site activities This report covers site activities from 6 December 2002, the date of the last <br /> monitoring event, until 17 March 2003, the date of the recent monitoring event Groundwater <br />' monitoring results,well construction details, and a groundwater monitoring plan are provided in the <br /> attached figures and tables Groundwater monitoring protocols,field data, and analytical results are <br /> provided in the attached appendixes Also appended are hydrographs presenting groundwater <br />' elevations and concentrations over time relative to property transaction dates <br />' GENERAL SITE INFORMATION <br /> Site name Former Exxon Retail Site 7-3708 <br />' Site address. 2705 Country Club Boulevard, Stockton, California <br /> Current property owner: Palisades Gas & Wash, Inc <br />' Current site use* Active USA-branded station operated by U S A Petroleum <br /> Current phase of project: Joint groundwater monitoring <br /> Tanks at site. Two underground storage tanks (diesel fuel, unleaded <br /> gasoline) <br /> • Number of wells 12 (8 onsite, 4 offsite) <br />' GROUNDWATER MONITORING SUMMARY <br />' Gauging and sampling date 17 March 2003 <br /> Wells gauged and sampled MW1, MW4-MW10, VEWI, VEW3 <br /> Wells gauged only None <br />' Groundwater flow direction South-southwest <br /> Groundwater gradient- 0 003 <br /> Well screens submerged NlW1, MW4-MW6 <br /> I Well screens not submerged: MW7-MW 10, VEW 1, VEW3 <br /> Liquid-phase hydrocarbons Not observed or detected <br /> Laboratory TestAmenca, Inc , Nashville, Tennessee <br /> Analyses performed. <br /> • Total Petroleum Hydrocarbons as gasoline by EPA Method 8015B <br />' • Benzene, toluene, ethyl benzene, and total xylenes by EPA Method 8021B <br /> • Methyl t-butyl ether, ethyl t-butyl ether, t-amyl methyl ether, t-butyl alcohol, <br /> 1,2-dibromoethane, 1,2-dichloroethane, and diisopropyl ether by EPA Method 8260B <br /> • <br />' 9 1proje IRV3708\ln=er%wp1gU303\3708tez[doe 1 <br />