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FREY ENVIRONMENTAL, INC. <br /> Environmental Geologists,Engineers,Assessors <br /> 2817 A Lafayette Avenue <br /> Newport Beach,CA 92663 <br /> (949)723-i645 <br /> Fax(949)7231854 <br /> Email:FREYinc@FREYinc.com <br /> October 29, 2024 <br /> 1095-01 <br /> Vera Fischer <br /> Regional Water Quality Control Board <br /> Central Valley Region <br /> 11202 Sun Center Drive#200 <br /> Rancho Cordova, CA <br /> WORKPLAN <br /> ADDITIONAL OFF-SITE SOIL <br /> AND GROUNDWATER INVESTIGATION <br /> QUICK-N-SAVE # 1 <br /> 1901 SOUTH EL DORADO STREET <br /> STOCKTON, CALIFORNIA <br /> (RWQCB CASE#391088/GID #T0607700903) <br /> Ms. Fischer, <br /> This workplan has been prepared by FREY Environmental, Inc. (FREY) to present a scope of <br /> work and procedures to conduct an additional off-Site soil and groundwater investigation for the <br /> Quick-N-Save #1 gas station (Site), located at 1901 South Eldorado Street in Stockton, <br /> California (Figure 1). The purpose of the additional investigation is to further assess the lateral <br /> and vertical extent of dissolved phase petroleum hydrocarbons in groundwater south and <br /> southeast of the Site and to conduct soil and groundwater sampling east of what appears to be a <br /> former underground storage tank (UST) at the corner of Howard and South El Dorado Streets to <br /> further evaluate if this is the source of deep zone groundwater contamination. The scope of work <br /> presented in this workplan is based on a State Water Resources Control Board (SWRCB) Joint <br /> Execution Team (JET) teleconference meeting conducted between the SWRCB, Regional Water <br /> Quality Control Board (RWQCB) and FREY on July 29, 2024, and to comply with a directive <br /> issued by the RWQCB in a letter dated September 4, 2024 (Appendix A). <br /> SITE AND SITE VICINITY DESCRIPTION <br /> The Site consists of an approximate 0.32-acre parcel located on the southwest corner of South <br /> Eldorado and Fifth Streets at a general elevation of 12 feet above mean sea level. An <br /> approximate 1,400 square foot retail building occupies the west-central portion of the Site, with a <br /> canopy and two fuel dispenser pumps located directly adjacent to the eastern side of the retail <br /> store. Gasoline USTs are located on the northeastern portion of the Site, adjacent to the <br /> northside of the canopy. <br />