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0 0 <br />Assuring all personnel entering hazard area are in appropriate levels <br />of protection <br />3.0 JOB HAZARD ANALYSIS <br />The possible major contaminants to be encountered on the project are: <br />Petroleum Hydrocarbons, Volatile Organic Compounds (VOCs), heavy metals, <br />and oil and grease. There is currently no known air concentration data <br />available for VOC emissions in the direct breathing zone of personnel working <br />around the exposed soils. Inhalation and dermal absorption hazards are the <br />major areas of concern for VOCs. <br />Benzene <br />This is a common constituent of gasoline and other petroleum products. <br />It is a clear, colorless liquid with a flash point of 12 degrees F. The currently <br />established Threshold Limit Value (TLV) for Benzene is 10 parts per million <br />(ppm) in air, however the American Conference of Governmental Industrial <br />Hygienists (ACGIII) has recommended aTLV of I ppm be adopted. <br />'toluene <br />This is a flammable, colorless liquid with a benzal -like odor. The flash <br />point is listed as 40 degrees F. The currently established TLV for Toluene is 100 <br />ppm in air. <br />Ethylbenzene <br />This is a colorless liquid with an aromatic odor. It's flash point is listed <br />as 59 degrees F. and it has an OSHA 8 hour Transient Working Average (TWA) <br />limit of 100 ppm. The listed STEL is 125 ppm. the hazard class is flammable <br />liquid. <br />Xylene <br />This material is a clear liquid with a flash point of 100 degrees F. The <br />TLV is currently established at 100 ppm in air, and is currently under study as <br />a possible carcinogen. <br />Heavy Metals <br />Depending on the type of metals to be found, there may be a possibility <br />of exposure to employees via Inhalation and dermal routes. protection of the <br />workers will include provisions for these ROES. <br />Protective Measures <br />It is currently not anticipated that the potential levels of exposure will <br />reach PAL or TLV limits, but this Is based on limited available specific <br />information. It is planned that inhalation and dermal contact will be the <br />potential exposure pathways of concerti, Protective hand coverings including <br />outer and inner gloves will be mandatory for all field operations personnel. In <br />