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subsurface sampling may also pose a fire and explosion hazard from gases and vapors trapped <br /> beneath the ground surface. <br /> The most significant risk associated with petroleum fuels is exposure to aromatic compounds. <br /> Skin contact will be eliminated by use of clothing, eye wear, and gloves. The inhalation hazard <br /> will be minimized using appropriate respiratory protective devices as determined by on-site air <br /> monitoring using a photoionization detector (PID) calibrated to the benzene molecule with <br /> isobutylene gas. <br /> The Safety Coordinator/Project Manager will establish an exclusion zone encompassing a <br /> conservative 50 foot radius around the work area. Restricted activities inside the exclusion zone <br /> may be allowed depending on field measurements taken during the course of investigation <br /> activities. Access within this zone will be limited to required personnel. <br /> Current enforceable and recommended exposure limits for potential site contaminants are <br /> presented in Table 1. <br /> --�r <br /> SAFETY.WP <br />