ARCHIVED REPORTS_XR0005180 - Laserfiche WebLink

Home Browse Search

' Summary Report of Subsurface Investigation ' Jamar Service Station 4075 East Main Street Stockton, California ATC Project No. 54.26823.0001 ' 1.4 INTRODUCTION ' ATC Associates Inc. (ATC) has prepared this report, on behalf of Mr. Jay Mcllrath of Jamar Service Station, to summarize findings of the subsurface investigation activities performed at the West Lane Fuel facility (known as Jamar Service Station) located at 4075 East Main Street in ' Stockton, California (Figure 1). The purpose of the subsurface investigation was to evaluate the extent of petroleum hydrocarbon impacted soil and groundwater and evaluate the groundwater gradient beneath the site. This work was done at the request of the San Joaquin County Environmental Health Department (SJEHD). The findings of the subsurface investigative study are summarized in the following paragraphs. ' 1.11 Site Location The site is located on the north side of East Main Street in Stockton, California, as shown on ' Figure 1. The property is located in a mixed residential and commercial area. The site is currently occupied by a fueling station and convenience store facility. ' 1.22 Background In 1995, one 500-gallon waste oil underground storage tank (UST) and one 500-gallon kerosene UST were removed from the site. In December 1998, two 6,000-gallon and one 10,000-gallon gasoline USTs were removed from the site. Soil samples were collected from the tank pit and analyzed for petroleum hydrocarbons. Analytical testing indicated the samples collected from the tank pit contained detectable ' concentrations of petroleum hydrocarbon constituents. The excavation was subsequently backfilled and a 20,000-gallon UST was installed. ' In September 1999, John P. Cummings & Associates (JPCA) advanced three soil borings, MW1, MW2, and MW3 to depths ranging from approximately 74 to 78 feet below ground surface (bgs). The borings were completed as monitoring wells. S:lEnviromenta1126823-JamaAreports\sum.doe 1