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i - <br /> MCVATC <br /> esto, CA 95351 <br /> 1117 Lone Palm Avenue, Suite B <br /> ww atca209-ates 221 <br /> 209-579-2221 <br /> ASS O C I ATE S I N C . Fax 209-579-2225 <br /> Environmental, Geotechnical and Materials Engineers <br /> Feasibility Study <br /> Former Stockton City Taxi Cab Company <br /> 2085 Fremont Street <br /> Stockton, California <br /> ATC Project No. 54.28349.0001 <br /> 1 .0 INTRODUCTION <br /> ATC Associates Inc. (ATC) has prepared this Feasibility Study, on behalf of Ernest Foppiano to <br /> present potential options for remediating petroleum impacted groundwater at the above referenced <br /> site. This study was prepared at the request of the San Joaquin County Environmental Health <br /> Department. A summary of environmental activities conducted at the site and recommendations <br /> relating to remediation options are included herein. <br /> 1. 1 Site Location <br /> The site is located at the northeastern corner of the intersection of East Fremont Street and Laurel <br /> Street in Stockton, California, as shown on Figures 1 and 2. The property is located in a mixed <br /> residential and commercial area. The site is currently occupied by a retail automobile business . <br /> 1.2 Background Information <br /> In 1998, two 10,000-gallon gasoline underground storage tanks (USTs) and associated product <br /> piping were removed from the site by Advanced GeoEnvironmental . Soil samples were collected <br /> from the tank pit and under product piping and analyzed for petroleum hydrocarbons. Analytical <br /> testing indicated the samples collected from the tank pit contained detectable concentrations of <br /> petroleum hydrocarbon constituents. <br /> In February 2000, WHF, Inc. (WHF) advanced two soil borings, B1 and B2, to depths of <br /> approximately 81 .5 and 31 .5 feet below ground surface (bgs), respectively. Soil and groundwater <br /> samples were collected from the borings and submitted for laboratory analyses. These soil and <br /> groundwater samples contained detectable concentrations of petroleum hydrocarbon constituents. <br /> In July 2003 , WHF advanced six soil borings, four of which were completed as monitoring wells <br /> MWl through MW4. Soil samples collected from these borings contained detectable concentrations <br /> of petroleum hydrocarbon constituents. Petroleum hydrocarbons were detected in groundwater <br /> samples collected from MWl through MW4, <br /> From November 10 to November 12, 2004 and November 15 to November 17, 2004, an ATC <br /> geologist supervised the installation of monitoring wells MW5 through MW12. Soil samples were <br /> collected from the boreholes of MW5, MW6, MW7, MW8, MW9, MW10, MWl1 , and MW12 and <br /> s:\environmental\28349\reports\feasibility.doe I <br />