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€'- - '. "`". ---: _... "-„�;`:� a -. �� �P� � _ ..,,x• �r,. .�. - - ��� � - -� rte" - 3`LT_ <br /> ti <br /> September I6, 1991 <br /> ARCO Service Station No. 2076, Lodi. California <br /> This document describes results from a previous subsurface investigation and vapor- <br /> extraction test at the site, our field methods associated with the upcoming tank replacement <br /> project. and methods for the installation of a VES, if remediation of soil is warranted. If <br /> remediation of soil is warranted after completing the tank replacement project, work will <br /> be conducted to delineate the horizontal and vertical extent of hydrocarbons in soil and a <br /> Problem Assessment Report will be submitted to the SJCPHS-EHD. A Final Remediation <br /> Plan will then be submitted to the S3CPHS-EHD before the VES is operational. <br /> This work will be conducted in accordance with the following three regi latory documents: <br /> (1) peaking Underground Duel Tank Field Manual: Guidelines for S;-e Assessment, <br /> Cleanup, and Underground Storage Tank Closure (California Leaking Underground Tank <br /> Task Force, October 1989). (2) Regional Board Staff Recommendations for Initial <br /> Evaluation and Investigation of Underground Tanks, Tri-Regional Recommendations, <br /> California Regiona{ Water Quality Control Board, August 1990); and (3) Appendix A to <br /> that document (August 1991). <br /> SITE BACKGROUND <br /> ARCO Service Station No.2076 is at 800 East Kettleman Lane in Lodi. California, as shown <br /> on the Site Vicinity Map (Plate 1). According to information supplied by ARCO, there are <br /> five underground storage tanks presently at the site. One 10.000-gallon tank and one 6.000- <br /> gallon tank are u--ed to store unleaded gasoline, two 4,000-gallon tanks are used to store <br /> leaded gasoline, and one 6,000-gallon tank is used to store super unleaded gasoline. The <br /> approximate locations of the tanks and present site features are shown on the Generalized <br /> Site Plan (Plate 2). <br /> 3OWS-3w <br />