ARCHIVED REPORTS_PHASE II ENVIRONMENTAL SITE ASSESSMENT

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W GIR, • Southwest, line. borings and the exploratory excavations are illustrated on the Site Plan presented as Figure 2. Rational for selection of the boring and excavation locations is discussed in Subsections 5.4.1 through 5.4.13 and summarized in Section 7.3 of this report. The Phase II ESA was conducted in substantive accordance with the guidance contained in the American Society for Testing and Materials (ASTM) Designation: E1903-97(2002) and the Work Plan for Environmental Investigation by WGR, dated December 12, 2007 and submitted to the San Joaquin County Environmental Health Department (SJCEHD). The Work Plan was approved by the SJCEHD on December 27, 2007. The cited ASTM standard fosters an iterative approach to investigation, and the reported phase of work was not intended to provide a complete characterization of the environmental conditions of the site or to satisfy the level of inquiry necessary to support remedial solutions. As provided for in Section 10.2.1 of ASTM Designation: E1903-97(2002), some of the RECs identified in the Phase I were not addressed by this Phase II ESA. The Phase II was limited to those RECs evaluated to be of the most significant concern. The investigation focused on the soil conditions of the site, and installation and sampling of • groundwater monitoring wells was not included in the scope of this phase of work. The collection of grab ground water samples from the boreholes was intended as a preliminary screening technique to assist in the placement of permanent groundwater monitoring wells if deemed appropriate. This investigation was also limited by the physical inaccessibility of certain areas of the site due to debris piles,underground obstructions and other impediments. 4.0 SITE DESCRIPTION 4.1 Site Setting The site is a 13.1-acre, irregularly-shaped parcel located within an industrial area in the southwest portion of the East Complex of the Port of Stockton in San Joaquin County, California. It is situated along the east side of Nary Drive. The Atchison Topeka (Burlington Northern) and Santa Fe Railroad extends in an east-west direction approximately 100 feet south of the site along the top of a raised levee. A storm water drainage channel,referred to as the South Ditch, is located adjacent to the south border of the site, just north of the railroad levee. It extends east and west of the site and directs runoff to a storm water retention pond located on the west side of Navy Drive. The properties to the north and northwest of the site are currently leased to other Port tenants. The Leamer site is a small portion of a 247.37-acre • parcel referred to by the San Joaquin County Assessor as parcel number(APN) 145-03-009. 704. PRI.05 2 July 21, 2008