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.r Mr_Jadi Singh <br /> January 24,2003 <br /> Job Number: LE02-481 <br /> Page 3 <br /> +r <br /> 3.0 SITE CONDITIONS <br /> The site is presently an open field with several trees and short grass. One idle water well and <br /> power pole drop line exists. Some areas show signs of previous use such as concrete foundations <br /> and brick fragments partially buried in the soil. The site is fairly flat and borders residential <br /> property to the north and west. Thornton road borders the eastern boundary and Walnut Grove <br /> Road borders the south. <br /> We understand from Mike Smith Engineering, Inc. of Lodi, that the property dimensions are <br /> approximately 200 feet by 425 feet. The size of the property is about 2 acres. The ground <br /> +� elevation of the site ranges approximately between 8.5 to 9.1 feet according to a preliminary <br /> ground-elevation survey conduced by Mike Smith Engineering, Inc. We understand that the <br /> grade slopes gently to the north. The average elevation of the north %2 of the site is <br /> approximately 8.9 feet.The site is approximately 1 foot below the flood elumtigakLibea. <br /> 3.1 File Review <br /> �. A file review was conducted at the office of San Joaquin County Environmental Health <br /> Department(EHD)on December 16'and 181. According the records, the site had contained a <br /> gasoline station, an underground storage tank(UST) and several buildings which operated from <br /> about 1946 to 1975 (Fluor Daniel GTI, 1998). <br /> The file review revealed that the UST's were removed from the subject property on June 2, 1993. <br /> ;• The Notification of Hazardous Waste Discharge states that"review of soil results from tank <br /> removal indicate soil contamination." A site map was obtained with the locations of"former <br /> USTs (1956-1975),""UST pit(1947-1975),""former dispenser island (1955-1975),"and <br /> '-' "former dispenser island(1947-1958)"indicated. <br /> The Worksheet for Site Closure obtained through EHD, dated July 6, 1993, lists the number of <br /> tanks at the facility as two and the depth to ground water at the site as 40 feet (1986 reference <br /> year). Minimum depth to ground water from the soil sample taken was listed as less than five <br /> feet, and total petroleum hydrocarbons were detected at 2,300 ppm. <br /> The Leaking Underground Fuel Storage Tank form obtained through EHD and dated May 7, <br /> 1998, lists two former 1,000-gallon underground gasoline tanks on the subject property. <br /> According to the form,these tanks were removed on June 2, 1993. The form lists the highest <br /> aOEA?D <br /> • 4 <br /> M <br /> Y � <br /> � O � <br /> r <br /> �1SpG♦ <br />