ARCHIVED REPORTS PHASE II ENVIRONMENTAL SITE ASSESSMENT REPORT

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Phase 11 Environmental Site Assessment Report-Executive Summary 1025 East Main Street,Stockton,San Joaquin County,California Page 5 Table 2—Laboratory Analytical Methods Soil Sam lin Location Sample Depth Discrete Constituents Method Analyses 0-0.5' bgs 4 TPH-G, -D, -MO 8015C �- 4 Lead and Arsenic 6020A Rail Spurs 2 BTEX 8260B 1.0-3.0' bgs 4 TPH-G, -D, -MO 8015C 4 Lead and Arsenic 6020A Former Western Pacific 0-0.5' bgs 2 TPH-G, -D, -MO 8015C Railroad Tracks 2 Lead and Arsenic 6020A Borings#'s 2 BTEX 8260B 3,4 2.5-3.0' bgs 2 TPH-G, -D, -MO 8015C 2 Lead and Arsenic 6020A L 6 Organochlorine 8081B 0-0.5' bgs Pesticides L Depot Building 6 Lead 6020A 4 Organochlorine 8081B 1.5-2.0' bgs Pesticides L 4 Lead 6020A Groundwater Sam lin Location Drilling Depth to Discrete Constituents Method LGroundwater Analyses 4 Semi-volatile g270D Organic Constituents L Borings1 —4 37-44' bgs 4 Volatile Organic 8260B Constituents 4 TPH-G, -D, -MO 8015C L4.0 OBSERVATIONS L 4.1 SOIL BORINGS The Site soil type as mapped by the US Department of Agriculture is Yellowlark Gravelly Loam. More information on the Yellowlark Series (National Cooperative Soil Survey)can be found at: hLtp://www2.ftw.nrcs.usda.gov/osd/(iat(Y/YELLOV,7LARK.html V During time of drilling, the following observations were noted about soil from each boring(see Figure 3, Appendix A for locations of borings): Boring 1 - Poorly graded gravel and slightly moist brownish gray clay at 0 to 2 feet bgs [45% clay and 55% angular rock (aggregate base)]; slightly moist reddish brown gravelly clay at 2 to 4 feet bgs [60% ` clay and 40% angular rock]; slightly moist, medium stiff, dark brown clay at 4 to 5 feet bgs [95% clay and 5% coarse sand]. Boring 2 - Poorly graded gravel and slightly moist brownish gray clay at 0 to 2 feet bgs [45% clay and 55% angular rock]; slightly moist reddish brown gravelly lean clay at 2 to 4 feet bgs [60% clay and 40% w 0.0 CONDOR V