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Limited Site Assessment Report COPPER ENTERPRISES/LOCKEFORD WINERY 1.2470 Locke Road Lockeford, California I.O. INTRODUCTION AND BACKGROUND Advanced GeoEnveronmental,Inc.(AGE)has performed a limited site assessment at the Lockeford Winery site located at 12470 Locke Road(subject property),Lockeford, California. The property is recorded as Parcel 9, Page 32, Book 51 (APN 051-320-09) of the San Joaquin County Tax Assessor's Office.The assessment was conducted at the request of Ms.Laura Maffei of Pacific State Bank .to assess potential environmental conditions identified in Phase I Environmental Site Assessment dated 26 July 2001,prepared by AGE. The purpose of the Phase I Environmental Site I Assessment was to identify and assess environmental characteristics of the subject property that could lead to liability in the event of ownership,that could have a potential impact on property value, or that could impact the present or future use of the subject property. Figure 1 shows the setting of the property.Elevation of the property is approximately 100 feet above mean sea level.The regional slope of the area is relatively gentle and dips toward the southwest..The subject property includes a cluster of seven buildings and associated structures of the former M Lockeford Winery at the .northern end, and an approximately 1,000- by 600-foot vacant lot immediately south of the building complex. The prominent features on the subject property are depicted in.Figure 2. Land use of the surrounding sites is primarily-commercial and industrial. 1 Potential environmental concerns identified in Phase I Environmental Site Assessment included: • The former presence of underground storage tanks on the site - two USTs,were properly closed under regulatory supervision;overexcavation removed impacted soil under on UST, } no contamination detected under the second;TST abandoned in place.A poorly documented third UST of unknown.location and disposition may or may not be on the subject property; • The use of an azeotropic unit on the site to distill ethanol for use in the production of gasohol (the unit is referred to in this report as a former distillation unit); x • Uncertain use of above ground storage tanks (ASTs) potentially utilized in the gasohol production and storage; • An active sump located approximately 100 feet southwest of the former distillation unit, which.couldprovide a vertical conduit.to the subsurface forhydrocarbons ifit received fluids released or discharged from the former distillation unit or associated tanks; ' A.square-shaped concrete opening to the subsurface south-of the former distillation unit ' observed in the 1997 photograph,which may also have been a sump and could have provided a vertical.conduit to the subsurface for unauthorized releases of hydrocarbons related to the gasohol production; Advanced GeoEnvironmcntal,Inc.