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' 0 aClaytori Mr. Mark Frater Page 3 R.E. Service Company Clayton Project No. 70-05628.00 tMarch 21, 2005 • Utilizing a private utility locating service prior to conducting the field activities for ' clearing proposed investigation locations relative to the presence of subsurface utilities. • Obtaining drilling permits from San Joaquin County. ' FIELD ACTIVITIES Field activities for this project will consist of drilling seven exploratory soil borings to ' investigate subsurface conditions. The soil borings will extend to a maximum of 15 feet. The soil borings will be spatially positioned to assess the potential areas of concern, as outlined below: ' • Two soil borings will be in the Press Pit area within the building ' • Two soil borings will be located in the Washing Area/drainage trough area within the building ' • One soil boring will be located in the Sump/Catch Basin area north of the building • Two soil borings will be located in the drum storage area east of the building ' The locations of the soil borings are shown on Figure 1. ' The borings will be advanced using truck-mounted drilling equipment. Drilling operations will be performed by a licensed, experienced drilling company under Clayton's supervision. ' Soil samples will be obtained with a coring system for the purposes of soil classification, headspace testing, and laboratory analyses. The coring system will contain acetate, plastic liners used for collecting the soil samples. Coring intervals for the collection of soil samples will generally be four feet in length. Recovered soil samples will be examined for soil classification and be described on detailed borings in general ' conformance with the Unified Soil Classification System. Additional lithologic descriptions and drilling information will be recorded on boring logs. ' For each boring, soil samples for laboratory analyses will be selected on the basis of photoionization detector(PID)readings and field screening observations (i.e., discoloration, odor, sheen) noted during each coring interval. Soil samples for laboratory ' analysis will be cut from the plastic tubes lining the inside of the coring system and will be approximately 6.0 inches in length. Upon retrieval,based on field screening, the ends of the sample liners will be covered with Teflon tape and plastic end caps. The sample ' tubes will be labeled with the project name, project number,boring number, sample ' SAES\PR0=S@005\056288 Smite Compenybjcehd permit—workplan len¢doe