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1 ' Interim Corrective Action Plan FORMER FISCO WAREHOUSE (Howard Lenz Property) ' 1648 Shaw Road, Stockton, California ' 10 INTRODUCTION AND SCOPE OF WORK At the request of Mr Peter Lenz of Innovative Beverage Brokers,Advanced GeoEnvironmental,Inc ' (AGE) has prepared this Interim Corrective Action Plan (ICAP) for 1648 Shaw Road, Stockton, California(site) The location of the site is illustrated in Figure 1 A map of the site showing wells Iand structures is illustrated in Figure 2 The purpose of this ICAP is to summarize the preliminary investigation and evaluation of the subsurface release on the site, to describe the lateral and vertical extent of the impact of fuel components to soil and ground water and to evaluate the feasibility and costs of several remedial action alternatives for impacted soil and ground water at the site This report also includes portions ' of a problem assessment report and a site conceptual model (SCM) which illustrates the overall impact of the hydrocarbons to the subsurface This ICRP was prepared in accordance with guidelines established by the California Regional Water Quality Control Board (RWQCB) for preliminary investigation and evaluation of underground storage tank (UST) sites 2.0. BACKGROUND The site is located in a commercial area of low topographic relief in east Stockton, California, at an approximate elevation of 25 feet above mean sea level The site is bounded on the north and east by the Stockton Diverting Channel, on the west by State Highway 99 and on the south by Shaw Road (Figure 2) Golden West Irrigation, an agricultural irrigation supply and distributing facility, presently occupies the property 2 1 REGIONAL GEOLOGIC/HYDROGEOLOGIC SETTING The property is situated within the Great Valley Geomorphic Province of California, a large, elongate, northwest trending, asymmetric structural trough The Great Valley Province has been filled with thick sequences of sediment ranging in age from Jurassic to Recent,creating a nearly flat- lying alluvial plain,extending from the Tehachapi Mountains in the south to the Klamath Mountains in the north The western and eastern boundaries of this province are comprised of the California Coast Range and the Sierra Nevada, respectively Rocks composing the basement complex of the province have not been completely defined but are believed to be metamorphic and igneous origin The northern and southern portions of the Great Valley Province have been designated the Sacramento and San Joaquin Valleys, respectively The Modesto, Riverbank,Turlock Lake Formations and overlying recent alluvium are the principal source of domestic ground water in the 13,500-square-mile San Joaquin Valley Ground WaterBasin Advanced Geo Environmental,Inc I