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Project No. 014-13157 Page No. 5 sedimentary deposits, dependent upon location. Sediments in the eastern valley, derived from the erosion of the Sierra Nevada, have been deposited by major to minor west-flowing drainages and their tributaries. The subject site is underlain by alluvium deposited between 12,000 and 26,000 years before the present and near-surface sediments along the eastern perimeter are dominated by gravel, sand, silt and clay. Data obtained from an environmental investigation site located approximately 1,700 feet to the east-northeast of the subject site indicates that groundwater in the area of the subject site is first encountered at a depth of approximately 65 feet bgs. Groundwater monitoring conducted at the above-referenced site indicates that the groundwater flow direction in the vicinity of the subject site is toward the east to northeast. PROPOSED SCOPE OF WORK Based on the PAOCs identified above, the following scope of work will be conducted: General Activities 1. Krazan will prepare a site-specific health and safety plan (HASP). This workplan has been prepared to describe the site history and purpose and scope of the proposed investigation. The workplan will include drilling and sampling procedures, laboratory analyses, boring construction/destruction methods, disposal of soil to be generated, a site map, and a HASP. Krazan will also complete and submit a Master File Record Information Form to the SJCEHD. Finally, Krazan will obtain a permit to complete the field work. Pending laboratory results of the soil samples, if contamination is identified as a result of the investigation, the appropriate agency will be sent a copy of the hazardous waste discharge notification. Krazan will mark the proposed boring locations (Figure 3). The local underground utility alert service, USA North, will be contacted for marking of their members utilities. A geophysical survey will be conducted to "clear" proposed boring locations of underground utilities or other subsurface features. Soil borings will be advanced using hollow-stem auger (HSA), solid-stem auger (SSA) or hand auger equipment. Soil cuttings or investigation derived waste (IDW) will be placed in drums for temporary storage on the site pending the receipt of analytical results. Soil borings will be destroyed with a sealing material consisting of one(1) ninety-four-pound sack of ASTM C150 Type I Portland Cement to 6.5 gallons of clean water. The grout will be introduced into the borings by free fall or using a one-inch-diameter tremie pipe and a grout pump. Soil samples will be obtained by means of a split-spoon standard penetration test sampler (SPT), containing three 6-inch-long by 1.5-inch-diameter stainless steel liners. Once collected, the ends of each sample liner will be covered with Teflon® film, capped with plastic end caps, labeled, placed into a plastic bag, sealed, and then placed into a thermal chest cooled with ice for delivery under strict chain-of-custody protocol to a state-certified analytical laboratory courier. PID field screening will be conducted to evaluate soil samples for the presence/absence of constituents of concern (COCs) during sample collection and results will be recorded. Selected soil samples will be collected and analyzed by a State-approved laboratory for COCs as specified below. COCs investigated during the course of this assessment and their respective analytical methods include the following: KRAZAN & ASSOCIATES, INC. With Offices Serving the Western United States 014-13157-Wilson Property Worlcplan FINAL