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File No. 20-3978-O1.P02 KLEINFELDER November 5, 1996 ATTACHMENT A SCOPE OF WORK FARMHOUSE AREA SAMPLING AND ANALYSIS (PORTIONS OF PHASE I ESA RECOMMENDATION NUMBERS 7, 9, 12, AND 18) FORMER SPRECKELS SUGAR PLANT 18800 S. SPRECKELS ROAD MANTECA, CALIFORNIA 20-3978-OI.P02 November 5, 1996 INTRODUCTION Kleinfelder has conducted a Phase I Environmental Site Assessment (ESA) of the property known as the Former Spreckels Sugar Plant in Manteca, California (Kleinfelder Job No. 20-3978-O1.P01, dated October 18, 1996). Plate i shows the location of the Spreckels property. A small farmhouse, and three smaller structures are located in the northern portion of the Spreckels property along Yosemite Avenue (Plate 2). Only one building in this area was accessible to Kleinfelder during the Phase I ESA. The northernmost structure appeared to be an empty barn and was open. A strong petroleum odor and visible staining of the wood floor was present. The house was occupied and inaccessible. The two buildings shown on a 1986 site plan as the "Ag shop" and "chemical storage" were locked and inaccessible. An underground gasoline storage tank was formerly located between the barn and the Ag shop. According to the 1986 site plan and Mr. Jerry Tucker (Spreckels Development Company), two septic systems are (or were) present in this area, adjacent to the house and the Ag shop. Additionally, a temporary storage building was formerly located adjacent and south of the Ag shop septic system and was used to store flammable materials. As part of the ESA conducted for the Spreckels property, recommendations were made for further assessment of several areas for potential soil and/or groundwater contamination. These included evaluation of the septic systems on site (recommendation 7), additional assessment at two of three known underground storage tank locations (recommendation 9), evaluation of soils at the Ag shop, farmhouse area chemical storage, and flammable materials storage unit (recommendation 12), and soil sampling beneath the wood flooring of the farmhouse area barn (recommendation 18). This proposal presents a scope of work to address recommendations 7, 9, 12, and 18 as they apply to the Farmhouse Area of the Spreckels property. 10-3978-0i.P021MP960119 Page l of @/996, Kleinfelder, Inc.