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• Site Investigation Work Plan <br /> PACIFIC PRIDE - EL DORADO <br /> 3147 South El Dorado Street, Stockton, California <br /> 1.0. INTRODUCTION <br /> Advanced GeoEnvironmental, Inc (AGE) has prepared this Site Investigation Work Plan for the <br /> advancement of soil probe borings at 3147 South El Dorado Street (the site), Stockton, California <br /> The Work Plan is prepared at the request of Mr David Atwater of Van De Pol Enterprises The <br /> location of the site is illustrated in Figure 1 A plan of the site is illustrated on Figure 2 <br /> This Work Plan is prepared as required by a San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) letter dated 06 January 1999 and in accordance with <br /> PHS-EHD and Central Valley Regional Water Quality Control Board (RWQCB) guidelines for the <br /> investigation of underground storage tanks (UST) sites <br /> The purpose of the proposed assessment is to evaluate the lateral and vertical extent of petroleum <br /> hydrocarbon impacts to soil and groundwater at the site This Work Plan provides a description of <br /> the scope of work and procedures to be used for soil probe boring advancement and soil/groundwater <br /> sample collection and analysis <br /> • 20. BACKGROUND <br /> The site is located at 3147 South El Dorado Street,approximately 200 feet south of the intersection <br /> of El Dorado Street and Ivy Avenue in a topographically flat area of Stockton, California(Figure 1) <br /> The site is further described as being located in the northeast quarter of Section 11, Township l <br /> North, Range 6 East, Mount Diablo Base and Meridian (Stockton West Quadrangle, 7 5-Minute <br /> USGS Topographic Series, 1968 photo revised 1987) <br /> 2 1 SITE DESCRIPTION <br /> The site is presently vacant However,the site was previously operated as a card-lock fueling station <br /> One 10,000-gallon diesel UST,two 10,000-gallon gasoline USTs, dispensers and one structure were <br /> located on the property <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL <br /> On 04 September 1998,one 10,000-gallon diesel UST and two 10,000-gallon gasoline USTs were <br /> removed from the site Laboratory analysis of soil samples collected beneath the gasoline and diesel <br /> USTs/dispenser island area and product piping detected total petroleum hydrocarbons quantified as <br /> gasoline,diesel and kerosene(TPH-g,TPH-d and TPH-K,respectively)at concentrations up to 9,000 <br /> Advanced GeoEmironmental,Inc <br />