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3.0 SCOPE OF WORK The evaluation of mercury in soil and groundwater near the Pool B-1 Separator at the Galli Pad area will consist of the following tasks: • Task 1 - Preparation of Permits, a Work Plan, a Health and Safety Plan, and Underground Utility Clearance; • Task 2 - Soil Sample Collection and Analysis; • Task 3 - Groundwater Sample Collection and Analysis; and • Task 4 - Report Preparation. Each of these tasks is described in more detail below. 3.1 TASK 1 - PREPARATION OF PERMITS, WORK PLAN, HEALTH AND SAFETY PLAN, AND UNDERGROUND UTILITY CLEARANCE This task consists of the procurement of applicable site assessment permits from the SJCEHD. Additional SJCEHD Joaquin County requirements include preparation and submittal of this Work Plan and Health and Safety Plan (Appendix A). Prior to mobilization, each soil boring location will be clearly marked and a utility clearance obtained through Underground Service Alert and/or Unocal. 3.2 TASK 2 - SOIL SAMPLE COLLECTION AND ANALYSIS Task 2 consists of soil sample collection, laboratory chemical analysis, and physical testing. In order to evaluate the concentration and transport of mercury in soil, samples will be collected from surface and shallow subsurface soils in two areas where mercury was previously reported (Figure 3). Soil sampling activities will consist of the collection and analysis of three types of soil samples; composite soil samples of surface and shallow subsurface materials, discrete samples for leachability testing, and a bulk sample for physical testing. Soil sampling procedures and protocols are described in Section 4.0. Soil sampling activities are outlined below. • Collect surface and shallow subsurface composite soil samples, from the two areas suspected to contain elevated levels of mercury in soil and to assess potential vertical migration of surface impacts. In each area, a total of three soil SAC 187.14 2 DAMES & MOORE