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Health and Safety Plan <br /> Project: Plan to Evaluate Impacts to Groundwater <br /> Location: Corral Hollow Landfill <br /> Date: August 25, 2005 <br /> Safety Standards <br /> Full and complete compliance with CAL/OSHA safety laws, rules, and regulations shall be <br /> adhered to. The OSHA Excavation Standard is included with this health and safety plan. <br /> Site Conditions <br /> The work of this contract includes excavation of refuse or contact with refuse. The work is in the <br /> vicinity of buried garbage and other materials in sanitary landfills. Potential hazards exist due to <br /> the presence of buried garbage and other materials, including those associated with landfill gas <br /> (LFG) and the refuse itself. Also,the work is in the vicinity of an oil pipeline,the location of <br /> which will be clearly marked prior to excavation. <br /> Landfill Gas <br /> When buried in a landfill, refuse and other organic material produces LFG. LGF is approximately <br /> 50 percent methane by volume and may contain other contaminants. Potential hazards associated <br /> with LFG are due to: <br /> 1. Oxygen deficiency <br /> 2. Combustible characteristics of LFG <br /> 3. Potential for hydrogen sulfide in LFG <br /> Potential hazards include: <br /> 1. Fire <br /> 2. Explosion <br /> 3. Asphyxiation <br /> LFG may also contain trace concentrations of organic compounds. Some of these compounds are <br /> known to be hazardous in high concentrations or may have carcinogenic potential. When present, <br /> the concentration of such compounds is in the parts-per-billion range. Dilution of LFG in air to <br /> below the OSHA safety limits of 1.25 percent methane (25 percent of the Lower Explosive Limit) <br /> usually reduces the concentration of trace components to below detection limits. <br />