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moo.. <br /> 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 /> Breathing 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 concentrations <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 PEI,, site manager shall continuously <br /> monitor conditions . if the PEL continues to be <br /> exceeded for 1.5 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 nanager shall continue to <br /> monitor conditions until levels are reduced to <br /> - background concentrations. <br /> 1 . Local Environmental Agency <br /> Name: San Joaquin Local Health District <br /> Phone: (209) 468-3420 <br />