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Soil Testing Report AQUA POOL & SPA FACILITY 2111 Moffat Boulevard, Manteca, California 1.0. INTRODUCTION At the request of Mr. Kim Koosun of the City of Manteca Public Works Department, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Soil Testing Report for the Aqua Pool & Spa Facility at 2111 Moffat Boulevard, Manteca, California(the site). The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. The scope of work included preparation of work plan, permitting, oversight fees, and the advancement of four shallow soil borings (B 1 through 134) at the site. The borings were advanced in the northern outer limits of an area of porous concrete to determine if petroleum-hydrocarbon had impacted subsurface soil. The scope of work and procedures were detailed in the AGE-prepared Soil Testing Work Plan, dated 22 February 2008,and submitted to San Joaquin County Environmental Health Department(EHD). The soil-boring locations are depicted on Figure 2. 2.0. BACKGROUND The property is located in Manteca, California,near the intersection of Moffat Boulevard and East Woodward Avenue, and immediately east of the Union Pacific Railroad track(Figure 1). The site 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 that extends from the Tehachapi Mountains in the south to the Klammath 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 of metamorphic and igneous origin. The Great Valley Province has been subdivided into two major divisions, identified as the Sacramento and San Joaquin Valleys. Based on the General Soil Map from the San Joaquin County Soil Survey,published by the United States Department of Agriculture Soil Conservation Service in 1992, the site is situated within an area of Delhi-Veritas-Tinnin soil.Delhi-Veritas-Tinnin soil is found on dunes,alluvial fans,and low fan terraces, and generally consists of moderately well-drained to somewhat excessively-drained, coarse-textured and moderately coarse-textured soils that are deep to a cemented hardpan or are very deep.The Modesto,Riverbank,and Turlock Lake Formations and overlying Recent alluvium are the principal sources of domestic ground water in the 13,500-square mile San Joaquin Valley Ground Water Basin (Basin 5-22). This basin is drained primarily by the San Joaquin River. Advanced GeoEnviron mental,Inc.