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i • j Stantec Consulting Corporation 57 Lafayette Circle 2nd Floor Lafayette CA 64549 Tel:(925)299-9300 Fax(925)299-9302 stantilm November 30, 2009 Mr. Rob Saur Pacific Gas and Electric Company 3401 Crow Canyon Road San Ramon, California 94583 Reference: Soil Investigation Work Plan PG&E Stockton Service Center, 4040 West Lane, Stockton, California Dear Mr. Saur: Stantec Consulting Corporation (Stantec) is pleased to submit this Soil Investigation Work Plan (Work Plan) to Pacific Gas and Electric Company(PG&E) for PG&E's Stockton Service Center located at 4040 West Lane in Stockton, California (the Site; Figure 1). PG&E is planning on removing two in-ground hydraulic lifts at the Site's Building 4 Garage (Figure 2) and replacing them with two above ground electric lifts. The two lifts, the two hydraulic oil underground storage tanks, and the associated piping will be removed as part of the replacement. This soil investigation is being performed to evaluate the soils which will be encountered and possibly excavated during the lift removal and determine if a release of hydraulic oil has occurred. The scope of work is based upon discussions between Stantec and PG&E. Scope of Work The soil investigation will include the advancement of seven direct-push soil borings for the purpose of characterizing shallow soils. Soil will be logged and samples will be collected and submitted for laboratory analysis of TPH as hydraulic oil (TPHho). The seven boring locations are proposed in the vicinity of the in- ground hoists. The proposed scope of work will include the following tasks: Task 1—Preliminary Field Activities; Task 2—Direct-Push Soil Borings; and Task 3—Reporting. The following describes each of the tasks in detail. Task 1—Preliminary Field Activities Stantec will conduct the following preliminary field activities: ❑ Site Health and Safety Plan (HASP): A site-specific HASP will be prepared prior to commencement of any field work. The HASP will address potential hazards associated with the proposed scope of work and emergency procedures and contact information. The HASP will be review by reviewed by the field staff and contractors before beginning field operations and will available at all times on-site. ❑ Permitting: A drilling permit will be obtained from San Joaquin County Environmental Health Department for the seven proposed soil borings.