Laserfiche WebLink
7 <br /> GROUND ZERO ANALYSIS, INC. <br /> 1 <br /> 1714 Main Street <br /> Escalon, California 95320 <br /> Telephone: (209) 838-9888 <br /> Facsimile: (209) 838-9883 <br /> March 5, 1998 <br /> Mr. Ron Rowe <br /> San Joaquin County-Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin Street <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br /> Subject: Subsurface Investigation Report, 733 South Van Buren Street, Stockton, <br /> California (Figure 1) <br /> Dear Mr. Rowe: <br /> Ground Zero Analysis, Inc. (Ground Zero) is submitting this report to describe the subsurface <br /> investigation and results at the above referenced property. The purpose of the proposed work <br /> was to investigate and define the lateral and vertical limits of any residual soil'contamination <br /> related to the former underground storage tank (UST) and to determine if groundwater has been <br /> affected by the release. The work was performed in accordance with the approved workplan <br /> dated December 16, 1997 prepared by Ground Zero. <br /> Background <br /> On June 9, 1992, one 3,000 gallon gasoline UST was removed from the site (Figure 2). Notes <br /> from PHS/EHD state that the tank was rusty but did not contain hales. No odor or discoloration <br /> was noted in the tank pit, except in native soil beneath the east end of the tank. Two soil <br /> samples were collected from native soil beneath the tank andl analyzed for total petroleum <br /> hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and total xylenes (BTEX). <br /> The eastern soil sample reportedly contained 3,300 parts per million (ppm) TPHg, 20 ppm <br /> ethylbenzene, and 210 ppm total xylenes. The western sample did not contain any detectable <br /> TPHg or BTEX. <br /> wbm%subsurF.rpt <br />