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WHF Environmental Consultants, Inc. <br /> Health and Safety <br /> Page= 3 <br /> borehole/excavation that approach the maximum element <br /> capacity of the organic vapor cartridge require site <br /> manager to monitor site perimeter (concentrating in <br /> the down, wind direction). <br /> Breathin zone vapor concentrations at the <br /> borehole/excavation that exceed the maximum element <br /> capacity of the organic vapor cartridge, require site <br /> activities to be stopped until concenLeations <br /> decrease. Site manager should continuously monitor <br /> site perimeter. <br /> 1.5 Site Perimeter <br /> Breathing zone concentrations at the site perimeter <br /> less than the PEL, site manager shall be monitored on <br /> 60 minute intervals unless notified by project <br /> personnel of elevated readings. <br /> Breathing zone concentrations at the site perimeter <br /> greater than the PEL, site manager shall continuously <br /> monitor conditions on site boundary concentrating in <br /> the down wind direction. <br /> Breathing zone concentrations at site perimeter <br /> greater than the PEL, site manager shall continuously <br /> monitor conditions. if the PEL continues to be <br /> exceeded for 15 minutes, excavation activities shall <br /> be stopped. <br /> Breathing zone concentrations at site perimeter <br /> greater than the PEL, site manager shall immediately <br /> stop drilling/excavation and clear the site of <br /> personnel. Appropriate regulatory agencies should be <br /> contacted (see below). Site manager shall continue to <br /> monitor conditions until levels are reduced to <br /> to background concentrations. <br /> 1. Local Environmental Agency <br /> �qa me: San Joaquin Local Health District <br /> phone: 209 4b8M3�+20 <br />