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When buried in a landfill, refuse and other organic material produces LFG, <br />which is approximately 50 percent methane by volume and may contain <br />other contaminants. Potential hazards associated with LFG are due to: <br />Oxygen deficiency <br />Combustible characteristics of LFG <br />Potential for hydrogen sulfide in LFG <br />Potential hazards include: <br />• Fire <br />• Explosion <br />• Asphyxiation <br />LFG may also contain trace concentrations of organic compounds. <br />Dilution of LFG in air to below the OSHA safety limits of 0.5 percent <br />methane (10 percent of the Lower Explosive Limit) usually reduces the <br />concentration of trace components to below detection limits. <br />B Refuse <br />Refuse will be excavated in this work. The landfill contains household <br />refuse, demolition debris, tree trimmings, and miscellaneous refuse. To <br />the best knowledge of SWD, hazardous materials have not been disposed <br />at the site. However, the landfill was operated by others when this refuse <br />was disposed. <br />Potential hazards associated with the direct contact with refuse include: <br />Biological infection <br />Household hazardous waste <br />Unidentified drums may be present in the refuse. If drums are uncovered <br />during excavation, the area will be flagged and excluded from the work <br />zone until the drums are characterized by hazmat personnel. <br />3.2 SAFETY PROCEDURES <br />1. OSHA safety rules and regulations will be followed fully and completely during <br />this project <br />2. Contractor will conduct a safety meeting with County staff and contractor's <br />employees before the start of the project. <br />3. Hard hats, safety glasses and safety vests will be worn by personnel who are <br />working near the construction area and operating heavy equipment. <br />Work Plan 6 Corral Hollow Sanitary Landfill <br />LFG Extraction Well Installation 2011 <br />