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` r s <br /> utilities may also be encountered during drilling activities. Efforts will be made to locate <br /> such utilities, and to prevent contact during the drilling. <br /> There is 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 <br /> control traffic, including the use of traffic cones, caution tape and barricades. Additionally <br /> there is a potential for physical hazards resulting from falling objects such as. tools or <br /> equipment, from falls from elevations, or from tripping over pipes, tools, hoses, and other <br /> equipment laying on the ground. Improper use and/or maintenance of equipment and tools is <br /> another potential source of physical hazards on site. These sorts of physical hazards must be <br /> avoided through proper site management and control of the work area by the Project Safety <br /> Officer. <br /> 4.0 RISK ASSESSMENT SUMMARY <br /> It is anticipated that there will be no significant or major potential source of exposures due to <br /> the scope of work to be followed on this project. The potential of any increased risk of <br /> exposure on other workers or the surrounding community is minimal. The basic potential <br /> exposure would probably originate from airborne dusts, during the drilling of the monitoring <br /> wells, and those dusts containing low level concentrations of VOC materials in the soils. <br /> Due to this potential, the Contractor will have equipment on-site to provide for dust control <br /> during the drilling activities, if it appears that dust control is warranted. Also, perimeter air <br /> 920-078.1A/SSP.DOC 5 September 24, 1996 <br />