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• Petroleum nydroearbon and lead impacts in soil and groundwater on approximately 2 acres of Multimodal North. • An unspecified quantity of oil-filled sumps and large stockpiles of soil and debris on Multimodal North. • Buried petroleum pipeline at the northern boundary of Multimodal North. • Previously identified soil and groundwater impacts. Representatives of Geocon performed observations of the Site on March 13 and August 13, 2003 from public thoroughfares. Slag ballast materials (associated with elevated heavy metals in shallow soil) were observed scattered throughout the Site and rail bed areas. Additional concerns include the potential presence of pesticide and herbicide residues. Geocon also reviewed historic UP maps and identified the following recognized environmental conditions: • Water well near southern boundary of Multimodal North. • Buried petroleum pipelines at the southern boundary of Multimodal South. The recognized environmental conditions with known locations are shown on Figure 3. PROJECT SCOPE The scope of services is presented as follows: Pre-field Activities • Prepare a Health and Safety Plan to provide guidelines on the use of personal protective equipment'(PPE) during the field activities. The Health and Safety Plan will also provide guidelines on the use of onsite monitoring equipment and action levels for upgrades to higher PPE. Provide this Workplan to San Joaquin County Environmental Health and obtain required drilling permit. • Retain the services of a private underground utility locator to clear proposed sample location, a driller to perform direct-push sampling, and a California-licensed laboratory to perform the soil and grab-groundwater analyses. • Contact Underground Service Alert (USA) and the UP utility hotline a minimum of 48 hours prior to job site mobilization to advise subscribing utility companies of-the soil excavation and sampling activities. Project No. S8675-06-01 -3 - October 16,2003