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Site Health and Safety Plan Page 6 <br />The JHA shall be updated accordingly as additional information becomes available, and all <br />copies shall be retained. <br />3.3 Hazardous Substance Profiles <br />This HASP has been developed to anticipate site hazards and select the appropriate protection <br />for personnel working on this project in regard to potential exposure(s) to any and all of the <br />following classes of contaminants. Site workers may encounter landfill residual <br />contaminants including: <br />• Metals (including lead and arsenic) <br />• Mercury <br />• Volatile Organic Compounds (benzene, toluene, xylenes, trichloroethene, <br />tetrachloroethene) <br />• Semi-volatile Organic Compounds (SVOCs) <br />• Methane Gas <br />• Polychlorinated Biphenyls (PCBs) <br />Brief summaries of contaminants of concern (COC) follow. They are intended to be <br />informative only and should not be considered an exhaustive description of the hazardous <br />properties and safety requirements necessary for handling contaminated environmental <br />media. <br />3.3.1 Lead <br />Elemental lead is an odorless, silver-bluish-white metal that is insoluble in water. It is soft, <br />highly malleable, ductile, and relatively poor conductor of electricity. Lead compounds may be <br />divided into water soluble and water insoluble categories. Lead has been used in a variety of <br />industrial settings, most commonly for leaded gasoline, lead acid storage batteries, <br />ammunition manufacturing, cable covering, piping, brass and bronze, and bearing metals for <br />machinery. <br />Lead is released into the environment from both natural and anthropogenic sources such as <br />mining, smelting, and industrial processes. The most common route of occupational <br />exposure to lead is inhalation of lead fumes, and lead laden dust in air, and absorption of <br />lead through the respiratory system. Lead may also be ingested and adsorbed via the <br />gastrointestinal tract. <br />The OSHA permissible exposure limit (PEL) for lead is 0.050 mg/m3. <br />Lead and lead compounds are reasonably anticipated to be human carcinogens based on <br />limited evidence of carcinogenicity from studies in humans and sufficient evidence of <br />carcinogenicity studies in experimental animals.1 <br />3.3.2 Arsenic <br />Arsenic is a naturally occurring semi-metallic element. Many inorganic arsenic compounds <br />are found as the sulfide form in complex minerals containing copper, lead, iron, nickel, <br /> <br />1 NTP (2014). 13th Report on Carcinogens. U. D. o. H. a. H. Services. Research Triangle Park, North Carolina, United States <br />Department of Health and Human Services