ARCHIVED REPORTS XR0010894 - Laserfiche WebLink

Home Browse Search

PRELIMINARY INVESTIGATION AND EVALUATION REPORT Elkhorn Country Club 1450 Elkhorn Drive Stockton, CA September 1994 I 1.0 INTRODUCTION In accordance with a request from Mr. Bob Young of the Elkhorn Country Club, Geological Audit Services, Inc. (GeoAudit) has drilled four soil borings at 1050 Elkhorn Drive in Stockton, California (the site). Three of the borings were completed as groundwater monitoring wells. Groundwater samples were then collected from the monitoring wells. The purpose of the investigation was to assess the extent of impacted soil and groundwater at the site. This report describes the activities performed between June and September 1994 and presents the results of these investigations. The location of the site is illustrated in Figure 1. A plan of the site is illustrated in Figure 2. 2.0 BACKGROUND 2.1 Site Location Elkhorn Country Club is located in a flat rural/residential area north of Stockton, in San Joaquin County, California (Figure 1). The area of investigation is located east of the Pro Shop, immediately adjacent to the maintenance building (Figure 2). 2.2 UST Removal It is our understanding that one 1,000-gallon gasoline underground storage tank (UST) was removed from the site in 1991. Two soil samples were collected from beneath the tank at depths of 10 and 10.5 feet. The samples were analyzed by a state-certified laboratory for total petroleum hydrocarbons TPH as gasoline),volatile aromatics (B TE&X} , total lead and ethylene dibromide (EDB). No EDB or lead were detected in the samples. However, volatile aromatics and TPH as gasoline were detected in the soil samples at concentrations as great as 480 parts per million (ppm). Soil from the tank removal was stockpiled on-site on plastic sheeting. The stockpiled soil has not been characterized. Gralogial Avdil S—k-,Inc. 1 Elkh—p1ER Mr—pl 1994 I l 1