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specific information. It is expected that inhalation and dermal contact will be the potential exposure pathways of concern. Should respiratory irritation occur, appropriate air-purifying respiratory protective devices will be worn, with organic vapor cartridges and dust pre-filters, or with high efficiency organic vapor/IEPA stack-type cartridge. Typically, the cartridge will require replacement daily. B. Physical Hazards Existing utilities on the site must be avoided in the process of normal site work. Overhead power lines which may be located throughout the site present a potential for electrical contact. All overhead lines located in the work area will be noted prior to starting work. A minimum distance of 10 feet from power lines will be maintained at all times. Underground utilities may also be encountered during drilling activities. Efforts will be made to locate such utilities, and to prevent contact during the drilling. There is a small risk of hazards based upon the Lower Explosive Limit (LEL) of the specific compounds encountered on the project site. As the majority of the petroleum fuel hydrocarbon materials have low flash points, it is important to measure the presence of the concentrations or amounts of vapor present. This will be accomplished using organic vapor detection instruments and/or indicator tubes. A potential for elevated noise exposure exists when operating or working around heavy equipment. The use of hearing protection such as ear plugs and/or ear muffs will be required, as necessary. Part of the scope of this project involves doing work in the street. In order to facilitate a safe work environment, lane closure will be necessary. Lane closure will be performed by Flash Safety. A flashing arrow warning sign will be placed at least 500 feet before the point where the closure actually begins. Cones or delineators will be used to identify and exclude the closed lane from the flow of traffic. Around the work area barricades will be used for this purpose. A gradual slope in the line of cones will help create a 3051351D/SSP2 4 November 2, 1995