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QUARTERLY REPORT January 1994 Lockeford Beacon 13975 East Highway 88 Lockeford, CA 1.0 INTRODUCTION In accordance with a request from Mr Robert Phillips of Lockeford Beacon, Geological Audit Services, Inc (GeoAudit) has prepared this report summarizing assessment and monitoring activities performed during the first quarter of 1994 at 13975 East Highway 88 in Lockeford, California (the site) Two monitoring wells and two soil bonngs were installed and sampled; groundwater samples were also collected from four other monitoring wells The purpose of the field work was to further investigate the lateral extent of petroleum hydrocarbons in groundwater 2.0 BACKGROUND 2.1 Site Description Lockeford, California is a small but growing community in a relatively flat rural area of northern San Joaquin County The site is located on the northwest corner of the intersection of State Highway 88 and Chea ry Street (Figure 1) The site currerrtly operates as Lockeford Beacon, a gasoline station The propeity is occupied by a single building, canopy and two filling islands Four undeigiound storage tanks (UST's) are located oirthe northern portion of the property (Figure 2) According to an assessment report by Applied GeoSystems (AGS) of Sacramento, two dry wells (French drains) were located on the property until July 1987 (Figure 2) These wells acted as drains for run-off and wash-down from the product dispenser area 2.2 Monitoring Well Installation Prior to sale of the Beacon station to the property owner, Mr Robert Phillips, four 2-inch diameter groundwater monitoring wells (MW-1 through MW-4) were installed in June of 1987 to investigate soil and groundwater integrity The wells were installed by AGS Petroleum hydrocarbons were detected in soil samples from MW-1, MW-2 and MW-3, and in groundwater samples from all four monitoring wells No floating product was discovered in any of the wells Geob$ ACuda S.ry .,[„c 1 [LCFCIOfWILQ Q��B�S