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71 <br /> Corrective Action Plan - November 2006 <br /> GUARDINO AND CRAWFORD <br /> 517 West Fremont Street, Stockton, California <br /> ( l 1.0. INTRODUCTION AND SCOPE OF WORK <br /> J In accordance with a request from Dave and Pat Guardino of Guardino and Crawford Construction, <br /> l Advanced GeoEnvironmental, Inc. (AGE) has prepared this Corrective Action Plan (CAP) for 517 <br /> [ West Fremont Street, Stockton, California. The location of the site is illustrated in Figure 1 . The <br /> _ layout of existing structures and the locations of monitoring wells are illustrated in Figure 2 . <br /> The scope of work was to evaluate the feasibility and compare the estimated costs of several <br /> remedial action alternatives for hydrocarbon-impacted soil and ground water at the site. The CAP <br /> . l was prepared in accordance with guidelines established by the San Joaquin County Environmental <br /> Health Department (EHD) and the Central Valley Regional Water Quality Control Board <br /> (-� (CVRWQCB) for investigation of underground storage tank (UST) sites. <br /> 2.0. BACKGROUND <br /> The site is located on Fremont Street in an area of low topographic relief in west Stockton, <br /> J California; south of the site is the Stockton Deep Water Channel. Local land use in the vicinity of <br /> lthe site is industrial and commercial, with residential areas located adjacent to the site. <br /> _ I 2. 1 . SITE LOCATION AND DESCRIPTION <br /> The site is located on Fremont Street in an area of low topographic relief in west Stockton, <br /> California; south of the site is the Stockton Deep Water Channel. Local land use in the vicinity of <br /> - _ the site is industrial and commercial, with residential areas located adjacent to the site (Figure 2) . <br /> li <br /> 2.2. REMOVAL OF UNDERGROUND STORAGE TANKS <br /> I <br /> In September 1989, one 1 ,000-gallon underground storage tank (UST), dispenser; and piping were <br /> removed from the site. Petroleum hydrocarbons were detected in soil samples collected from the <br /> UST excavation and dispenser areas at concentrations as high as 700 milligrams per kilograms <br /> (mg/kg). The former UST location is illustrated on Figure 2. <br /> L_1 <br /> 2. 3 . REGIONAL GEOLOGICAL/HYDROGEOLOGICAL SETTING <br /> !r J The site is situated within the southern portion of the Great Valley Geomorphic Province of <br /> California, a large, elongate, northwest trending, asymmetric structural trough; the northern and <br /> _7 Advanced GeoEnvironmental, Inc. <br /> J <br />