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~' 90343TEXT CON-1 • • INTRODUCTION In March of 1986 LOF Glass experienced an oil spill at their straw oil tank farm. The spill was confined within the containment area but some oil had percolated down into the soil before it could be recovered. Much of the contaminated soil was removed and spread for evaporation nearby after obtaining approval from the California Regional Water Quality Control Board (RWQCB). The contamination extended deeper than expected and soil removal was discontinued to avoid jeopardizing the tank foundations. The RWQCB then recommended that LOF perform an investigation to determine the extent of oil migration and assess the potential for contamination of the underlying groundwater. Woodward-Clyde Consultants was retained to conduct this investigation. INVESTIGATIVE ACTIVITIES Health and Safety Prior to commencement of field work, a Health and Safety Plan was developed for the project. The plan was reviewed by the Woodward-Clyde Consultants' field engineer and drilling subcontractor personnel assigned to the project. This review was conducted on 6 August 1986 prior to initiation of field drilling activities. Drillers assigned to the drilling activities were requested to sign a statement indicating that they understood and would follow the directives of the project Health and Safety Plan. All Woodward-Clyde Consultants personnel assigned to field investigations involving hazardous materials are required to have Woodward- Clyde Consultants-approved medical examinations within the past 12 months. Protective clothing and equipment available for use by field personnel included: 1. Gloves; 2. Steel-toed rubber boots;