ARCHIVED REPORTS XR0005961 - Laserfiche WebLink

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• 1.0INTRbDUCTICON Kwikee Foods is a convenience store and former gasoline filling station located on Country Club Boulevard in Stockton, California. The property is .owned by Mr. William Peters, and has been leased out for'several years. Following the discovery of gasoline in groundwater beneath the site in 1990, the site was placed in the Local Oversight Program of Sdn Joaquin County Department of Health Services, Environmental Health Division (PHS/EHD) and assessment of the extent of contamination was initiated. Mr. Peters retained Upgradient Environmental Consultants in 1994 to install two additional monitoring wells and begin quarterly groundwater monitoring. Mr. Peters retained SEMCO, Inc. to remove the two underground gasoline storage tanks in 1998, and shortly thereafter Upgradient Environmental completed the assessment of soil contamination by drilling five borings around the perimeter of the UST excavation. Upgradient Environmental installed four additional wells in the third quarter of 2000, and monitored groundwater conditions in September andbecember. Monitoring during the first quarter of 2001 was performed on February 14, 2001, in coordination with other consultants working on neighboring sites. " 2.0 BACKGROUND INIF~ORMAT>ION The project site is located at 2081 Country Club Boulevard in west-central Stockton. The location of the site is shown in Figure 1, and the site facilities are shown in Figure 2. The site is located in a residential/commercial area, and the local topography is flat. A Chevron gasoline station was formerly located across Franklin Street from the site, but has been demolished and is presently undergoing remediation soil and groundwater contamination resulting from activities at that site. 3.0 I?ROC3EDURIES After the wells were opened and allowed to equalize with atmospheric pressure, the depth to groundwater was measured with a water level meter and recorded on the Well Monitor Report (Appendix.A). A battery operated pump was then used to purge the wells of standing water, which was deposited in 55-gallon drums and stored on site. Water temperature and conductivity were measured during purging, and that information was also recorded on the Well Monitor Report. After purging, water samples were collected with a disposable plastic bailer and placed in 40-ml- vials. The vials were labeled and logged and placed in a cooled ice chest for later transport to. Sequoia Analytical Laboratory. The laboratory report and chain of custody form are in Appendix B. 2