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November 2010 M Project No. 1001-0343 R......ALOMM"ATS•�' ��®t,OEOL Physical Hazards Onsite. The physical hazards and potential for employee exposure to the hazards (i.e., low, moderate, and high) anticipated during the field investigation are discussed below. Noise. Equipment used during the abandonment activities (i.e., trucks, compressors, generators) will generate noise during field activities. This type of equipment is not expected to exceed 85 decibels (dBA), which is protective of workers. Therefore, field personnel working in and around such equipment may don PPE (i.e., earplugs) that is protective of noise generation above 85 dBA. Heavy Equipment. The hazards involved with using heavy equipment (e.g., cement trucks, pick-up trucks, etc.) include impact from moving parts; pinch points; entrapment in machinery; electrocution from buried and overhead utilities; and improper operation. The potential for employee exposure to heavy equipment hazards is considered high during abandonment activities. Slips, Trips and Falls. Site activities can pose a variety of slip, trip and fall hazards. Examples that contribute to slips, trips and falls include uneven ground surfaces and slick or wet surfaces, and unstable earth slopes. The potential for employee exposure to slips, trips and falls is low to moderate during field activities. Overhead and Underground Utilities. Typical site activities such as movement of equipment or intrusive activities such as subsurface drilling can present the risk of contact with overhead or underground utilities. A safe distance (10 to 15 feet) will maintained between equipment and any identified overhead utilities. Since no excavation or digging is planned, the potential for employee exposure to utility hazards is low during field activities. Heat Stress. High temperatures, direct sun, use of PPE, and labor-intensive activities may contribute to heat stress. Heat stress can involve a high risk of illness of death. Exposure to heat stress at this site is considered low, because field work will be performed in the winter months and the Project Site typically experiences a cool coastal climate. Fire and Explosion. Gas or sewer lines can contain hazardous levels of explosive or toxic gases, which may pose a fire risk. The risk of fire on site may also stem from the presence of vegetation, heat and fuel sources from construction equipment and site vehicles, or from the presence of combustible gases or vapors in contaminated soil and/or wells. The potential exposure to fire and explosion hazards is considered low. Traffic Hazards. Work activities along roadways, parking areas, and entrance and exit areas create exposure to traffic hazards. Field activities will occur in an area not utilized for vehicle traffic. The potential exposure to traffic hazards is considered low. However, appropriate measures, i.e., cones, barricades, will be employed as necessary to protect workers from the onsite movement of vehicles.