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LEA Advisory 20 Attachment- Inspection Guidance for SW Landfills Page 6 of 52 safety equipment. An effective field health and safety program is directly related to the dedication with which it is implemented by the inspectors. The inspector should avoid areas of potential danger, including hazards such as bees, wasps, spiders, snakes,poison oak and wild animals. Landfill Gas The Board's Interim Field Health and Safety Plan requires Board inspectors to continuously monitor for landfill gas within the boundaries of the facility while on-site,using a combustible gas indicator for air monitoring. Maintenance and equipment areas should be checked for landfill gas hazards within on-site structures and for general safety problems. On-site structures and existing gas monitoring probes or probe holes installed by the inspector should be monitored during the warmest part of the day (usually 2:00-3:00 pm). This is because cooler temperatures (higher atmospheric pressures) tend to suppress landfill gas migration. The inspector should avoid exposure to landfill decomposition gas at or near gas collection and venting systems. The inspector should always stay upwind of potential sources of landfill gas. Enclosed areas or confined spaces including buildings, structures or any low areas where gas may collect, such as sumps, drains, tunnels, and structures housing gas collection systems, should not be entered without first performing an air safety survey with a combustible gas indicator(CGI). Landfill Areas A disposal site has three major areas covered by SMS. These areas include the working face, site perimeter, and access road/gatehouse/office area. Working Face Immediately after gaining access, the inspector should drive to the working or active face of the landfill. This will usually allow the inspector to witness the condition of the working face from the previous day's operation and to learn if unpermitted nighttime operations are taking place. If the site is still in darkness, inspectors should remain in their vehicle and travel only on the maintained access road to the working face. At the working face, at least 20 SMS can be evaluated using the SWIS inspection for disposal sites. These minimum standards include Title 14 CCR Sections: 17741 -Burning Wastes 17742 -Hazardous Waste 17669 -Lighting 17676 - Confined Unloading 17677 - Spreading and Compacting 17682 and 17258.21 - Cover http://www.ciwmb.ca.gov/pe/advisory/20/attach20/20attch l.htm 8/11/98