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j PAGE 4 i� Land Use The 1325 and 1515 West Weber properties are located in'i{an industrial area of Stockton, California. Both properties have historically been,Jused for industrial purposes and both are zoned for heavy industrial use. ERM is not aware of any plans to change the zoning of these properties in the foreseeable future. i, U i Soil '.1 Based on Iand use information for the subject properties land the absence of residual soil constituents in surface soils, there is little or no j opportunity for exposure to residual soil constituents under conditions associated with the industrial use of these sites. Specificpoints regarding potential exposure are noted below: ; • Because residual soil constituents are confined to the subsurface, .3 f industrial workers at the subject properties are unlikely to be exposed to soil constituents via direct contact (i.e., incidental ingestion and dermal contact). �f • Similarly, because soil constituents are confined to depth, industrial f workers are unlikely to be exposed to residual soil constituents via the inhalation of fugitive dust. I • Only isolated detections of volatile organic compounds (V6Cs)3 are present in subsurface soils. Because of the very limited detections, the migration of these compounds from soil into air is not!expected to represent a significant exposure pathway for industrial workers. However, construction workers or others involved in intrusive:'subsurface activities at the site may be exposed to residual constituents in subsurface soils. Under this scenario, exposure may occur via the following routes: • Incidental ingestion. • Dermal contact. I� l • Inhalation of VOCs released from soils that are exposed during excavation or other in 'v' intrusive activities. I: s VOCs detected in soil include the aromatic hydrocarbons benzene,toluene, ethylbenzene,and xylenes.