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0 0 <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 />920-124. 1 A/SSP.DOC 5 December 8, 1997 <br />