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+ • . 11 July 2003 AGE-NC Project No 03-1055 Page 3 of 7 TPH-g and various BTEX compounds were detected in the grab ground water samples collected from the site Benzene concentrations exceed the State of California,Department ofHealth Services action level for drinking water in samples collected from boring B2, 133 and 134 The hydrocarbon plume has not been defined with the sample locations 24 SOIL EXCAVATION The hydrocarbon-impacted soil was removed with an excavator and 2 45 cubic-yard bucket Soil was excavated from the northern most dispenser near soil probe boring B-3 Soil was stockpiled immediately on the eastern edge of the site Excavated soil was field screened for the presence of volatile organic compounds using an OVM Ground water was present within the limits of the excavation at a depth of 15 feet bsg Saturated soil was excavated from below the water table and stockpiled on site within a soil containment berm Soil was placed within plastic for temporary storage The open excavation area was surrounded by caution fencing No AGE or subcontractor personnel was allowed into the excavation 3.0. SCOPE OF WORK AGE proposes to collect soil samples to determine ifpetroleum hydrocarbon and/or MTBE-impacted soil and/or ground water is present beneath the site The additional site assessment will include the following tasks • Permitting and pre-field work activities, • Soil sample collection and analysis, • Report preparation The preliminary site assessment tasks are discussed below 3 1 PRE-FIELD WORK TASKS A health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety . and Health Administration, U S Coast Guard and U S Environmental Protection Agency, 1985) Advanced GeoEnvnronmental,Inc.