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KRAZAN SACRAMENTO <br /> 01/28/1998 09:21 9165642222, } <br /> \.� <br /> & ASSOCIATES . INC . <br /> GEOTECHNICAL ENGINEERING • ENVIRONMENTAL ENGINEERING <br /> CONSTRUCTION TESTING AND INSPECTION <br /> January 28, 1998 Project No. 034-97252 <br /> Mr. Doug Reynolds <br /> 1 H&H Engineering Construction, Inc. <br /> 212 Industrial Drive <br /> Stockton, CA 95206 <br /> RE: Workplan <br /> Additional Subsurface Investigation <br /> Former Underground Storage Tank Area <br /> f 212 Industrial Drive <br /> Stockton, California <br /> Dear Mr:'Reynolds: <br /> j In accordance with your request,Krazan&Associates, Inc. (Krazan)has prepared this Workplan <br /> letter for additional subsurface investigation at the above-referenced site. The purpose of the additional <br /> subsurface investigation will be to further characterize the horizontal and vertical extent of petroleum <br /> hydrocarbon impact to soils in the area of a former gasoline underground storage tank(UST)at the site. <br /> Following approval of this Workplan`letter by you, the San Joaquin County Environmental Health <br /> I <br /> I Department(SJCEHD), and Union Bank of California, Krazan will initiate the described work. <br /> BACKGROUND <br /> i The subject site is located immediately south of Industrial Drive and approximately 250 feet west <br /> of McKinley Avenue in Stockton, California. The site us currently occupied by a railroad construction <br /> contractor, H&H Engineering Construction. We understand that a 1,000-gallon underground storage tank <br /> f (UST) was removed from the subject site in 1987_ A soil sample was obtained from a depth of <br /> approximately seven feet below ground surface during UST removal operations_ Analytical testing of this <br /> sample detected minor concentrations of petroleum hydrocarbons. According to an interoffice <br /> correspondence, Union Bank of California does not consider the previous sampling to be adequate to' <br /> determine whether the subsurface had been impacted from any releases from the former UST. <br /> 113 Commerce Circle Swramento,Calirorois 95915•(916)564-2200•FAX(916)564-2222 <br /> Offices Serving the Western United Stares 349MZ.W'PL <br />