WORK PLANS - Laserfiche WebLink

Home Browse Search

1—. I..11 Closure Summary Report SWENSON GOLF COURSE 6803 Alexandria Place, Stockton, California 1.0. INTRODUCTION At the request of Mr. John Fukamoto of the City of Stockton,Advanced GeoEnvironmental, Inc. (AGE) has prepared this Closure Summary Report (CSR) for Swenson Golf Course - City of Stockton, 6803 Alexandria Place, Stockton, California (the site). The scope of work included the installation of one ground water monitoring well,two soil borings and conducting two ground water sampling events. The objective of the investigation was to determine the lateral and vertical extent of hydrocarbon-impacted soil and ground water at the site. The site setting is illustrated on Figure 1. Structures, soil borings and well locations on the site are shown on Figure 2. 2.0. BACKGROUND The investigation was conducted in accordance with San Joaquin County Public Health Services - _ Environmental Health Division(PHS-EHD) and California Regional Water Quality Control Board- Central Valley Region(CRWQCB-CVR)guidelines for the subsurface investigation of underground storage tank (UST) sites. 2.1. SITE DESCRIPTION The site is located on the north side Alexandria Place in an area of low topographic relief in west Stockton at an elevation of approximately 5 feet above sea level. Five Mlle Slough is located west of the site. The site operates as a golf course. Land use surrounding the site is residential. — 2.2. UNDERGROUND STORAGE TANK REM0117;L, _ AGE has been informed that one 1,500-gallon UST, dispenser and associated piping were removed from the site in February 1992. Laboratory analysis of soil samples collected beneath the UST indicated a minor unauthorized release of hydrocarbons. Xylenes were detected at a concentration of 0.052 milligrams per kilogram: mg/kg. Water was not encountered during the UST removal. 2.3. GROUND WATER DEPTH AND FLOW DIRECTION The estimated depth to ground water at the site is approximately 15 feet below surface grade (bsg), based on the map titled Lines of Equal.depth to Groundwater Spring 1996 published by the San Joaquin County Flood Control District and Water Conservation District (FCD&WCD). The map Advanced GeoEnvironmevW,Inc.