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� 4 <br /> Should respiratory irritation occur, appropriate air-purifying respiratory protective devices <br /> will be worn, with organic vapor cartridges and dust pre-filters, or with high efficiency organic <br /> vapor/NEPA stack-type cartridge Typically, the cartridge will require replacement daily <br /> B. Physical Hazae ds <br /> Existing utilities on the site must be avoided in the process of normal site work Overhead <br /> power lines which may be located throughout the site present a potential for electrical contact <br /> All overhead Iines located in the work area will be noted prior to starting work A minimum <br /> distance of 10 feet from power lines will be maintained at all times Underground utilities may <br /> also be encountered during drilling activities Efforts will be made to locate such utilities, and <br /> to prevent contact during the drilling <br /> There 1s a small risk of hazards based upon the Lower Explosive Limit (LEL) of the specific <br /> compounds encountered on the project site As the majority of the petroleum fuel <br /> hydrocarbon materials have low flash points, it is important to measure the presence of the <br /> concentrations or amounts of vapor present This will be accomplished using organic vapor <br /> detection instruments and/or indicator tubes <br /> A potential for elevated noise exposure exists when operating or working around heavy <br /> equipment The use of hearing protection such as ear plugs and/or ear muffs will be required, <br /> as necessary <br /> Vehicular traffic presents another potential physical hazard Measures will be taken to control <br /> traffic, including the use of traffic cones, caution tape and barricades Additionally there is a <br /> potential for physical hazards resulting from falling objects such as tools or equipment, from <br /> falls from elevations, or from tripping over pipes, tools hoses, and other equipment laying on <br /> the ground Improper use and/or maintenance of equipment and tools is another potential <br /> source of physical hazards on site These sorts of physical hazards must be avoided through <br /> proper site management and control of the work area by the Project Safety Officer <br /> i <br /> 9110081 A/SSP 5 December 22, 1997 <br />