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46w NATIONAL ADVERTISING COMPANY— ADDITIONAL SUBSURFACE INVESTIGATION V HEALTH A\p SAFETIPLAN 14 5.0 HAZARD ASSESSMENT Site investigation activities present a wide range of potential chemical and physical hazards to which personnel may be exposed. These are due both to the hazards presented by the work location itself (e,g., .. presence of contamination), hazards associated with the treatment system equipment, and hazards associated with evaluation tasks The potential hazards include, but are not limited to: +.. 0 Mechanical hazards associated with site activities. • Exposure to environmental contaminants, primarily waste Gasoline and associated consituents such as, benzen, toluen, ethylbenzene, and xylenes (BTEX). • Hazardous noise produced during equipment operation. I` • Explosion and fire risk produced during drilling activities due to the presence of volatile organic compounds. • Cleaning and decontamination of equipment. 5.1 TASK HAZARD ANALYSES L The following analyses address work activities that will be performed at the PGFM site. 5.1.1 Drilling/Well Installation Activities Hollow -stem auger drilling will be conducted to install groundwater monitoring wells. The use of hollow -stem auger drilling techniques presents several potential hazards to personnel. Due to the exposure of subsurface soils there is the potential for the creation of explosive conditions in the vicinity of the borehole. Also, there is the potential for personnel to be exposed to any of the potential site contaminants (see Section 5.2) via skin contact and/or inhalation (concentrations of contaminants may exceed the applicable Permissible Exposure Limits). To protect against exposure personnel will utilize PPE as specified below, and will conduct monitoring for airborne contaminant concentrations. Drilling operations produce hazardous noise levels (in excess of 90 dBA) and personnel are required to utilize hearing protection inside any controlled work are (see Section 10.0) whenever drilling occurs. Spinning augers can catch loose clothing. Lifting of heavy equipment and materials (e.g., bentonite bags) can cause severe injury unless proper lifting practices are used. Elevated drill rig masts present the potential for overhead hazards, requiring that hardhats be work at all times. Attachment C provides additional guidance concerning proper drilling safety. During well casing installation there is the potential for some contact with groundwater, which can present potential skin contact and inhalation hazards due to the presence of contaminants in the groundwater. Applicable Safe Work Procedures: Slips, Trips, Falls and Protruding Objects (Section 6.1) Hazardous Noise Environments (Section 6.2) Heavy Machinery (Section 6.3) Explosive Hazards (Section 6.4) Heat Stress (Section 6.5) Underground Utilities (Section 6.6) Dust and Vapor Suppression (Section 6.7) hslprojsuplcominachasp.doc 5-1 02/09/98