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Project No. 034-17016 Site-Specific Health& Safety Plan Page No. 21 excavation and sampling activities will be conducted in outdoor open spaces. However, there are certain components, primarily benzene vapors that present significant toxicological hazards and must be properly controlled. In addition to inhalation exposure pathways,because exposure pathways to workers from target COCl may involve dermal exposure,ingestion and contact with the eyes,these hazards will be controlled by proper use of PPE(gloves,safety glasses,footwear,clothing)during drilling,sample collection and sample packaging activities as deemed necessary by the on-site Safety Task Leader and personal hygiene practices including thorough hand washing as well as the designation of a clean area for eating and drinking. 4.2 Volatile Organic Compounds(VOCs) Based upon the historical uses of the subject site,it is possible that on-site activities which utilized hazardous materials would have primarily been associated with cleaning parts and equipment. Therefore,the potential storage, use and disposal of VOCs and has been discussed resulting in proposed soil and soil vapor investigation for these COCl. Typical constituents may have included solvents such as TCE and PCE related to cleaning, lubrication and insulation fluids, and fuels. However,because exposure pathways to workers from these COCs may involve dermal exposure, ingestion and contact with the eyes, these hazards will be controlled by proper use of PPE(gloves,safety glasses,footwear,clothing)during drilling,sample collection and sample packaging activities as deemed necessary by the on-site Safety Task Leader and personal hygiene practices including thorough hand washing as well as the designation of a clean area for eating and drinking. Drilling and sampling activities will be conducted in outdoor open spaces and/or well ventilated service bays. However, as a safety measure to monitor the potential hazard of exposure to elevated concentrations of methane gas or other hazardous atmospheres to on-site workers, the work area where potential sampling and/or trenching are conducted will be monitored with an approved combustible gas meter and a PID to detect the presence of potentially harmful flammable atmospheres. 4.3 Metals Because exposure pathways to workers from metals in soil may involve dermal exposure, ingestion and contact with the eyes,these hazards will be controlled by proper use of PPE(gloves,safety glasses,footwear, clothing)during earthwork activities,sample collection and sample packaging activities as deemed necessary by the on-site Safety Task Leader and personal hygiene practices should be instituted including thorough hand washing as well as the designation of a clean area for eating and drinking. KRAZAN&ASSOCIATES,INC. With Offices Serving the Western United States 03417016 SSI Ladvop HASP Final.doc