WORK PLANS - Laserfiche WebLink

Home Browse Search

R October 25, 1995 f FormeDiscovery Chevrolet Work Plan Tracy,I California area in the western portion of the site, or the product piping running underneath a concrete apron 4 from the former UST area to inside the service bays. The scope of work described in this work plan is intended to comply with the State of California Water Resources Control Board's Leaking Underground Fuel Tanks (LUFT) Manual, and the Regional Water Quality Control Board's Tri Regional Board Staff Recommendations for. Preliminary Investigation and Evaluation of Underground Tank Sites. We understand from Ms. Margaret Lagorio of the San Joaquin County Environmental Health Department (SJCEHD)that the SJCEHD is using Appendix A of the Tri-Regional document for guidance at this time. Horizon Environmental Inc. Field Methods and Procedures are included in Attachment A of this work plan. SITE DESCRIPTION AND BACKGROUND I The subject site is an automobile dealership located at 1615 11th Street in Tracy, California. As shown on the Site Vicinity Map (Figure 1), it is located adjacent to the Southern Pacific railroad tracks, and approximately 0.2 mile north of the Lower Main Canal. The elevation of the site is approximately 44 feet above mean sea level (MSL). The site is owned by Winner Ford of Alameda, California, and was formerly occupied by Discovery Chevrolet; the current tenant is Tracy Chevrolet. Site facilities include an auto showroom, a sales office, and service bays. We understand from information provided by Ms.Nokes that two 500-gallon gasoline underground storage tanks (USTs) were removed from a common excavation at the site in April 1993, and that no USTs are known to remain at the site (GeoStrategies Inc., December 7, 1994, Preliminary Environmental Investigation and Evaluation Report for Former Discovery Chevrolet, 1615 11th Street, Tracy, California). Locations of these facilities and other pertinent site features are shown on the Site Plan (Figure 2). GeoStrategies (December 7, 1994) indicated that when the two gasoline tanks were removed, four soil samples were collected from the base of the excavation at approximately 9 to 10 feet deep. These samples were found to contain total petroleum hydrocarbons as gasoline (TPHg) at concentrations 3001-1 i.wp 2 HORIZON ENVIRONMENTAL INC.