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10-2'}1'=GE 03=?^PM FROM TO P.07 <br /> Michael P. Kenny, Executive Officer -3- September 3, 1998 <br /> advised to standby for a scheduled strategy meeting and monitoring assignment_ <br /> After the meeting ARB staff were directed to <br /> complete a survey of the general area <br /> around the fire and locate monitoring sites between rhe tire's smoke plume and any <br /> possibly affected residences. <br /> During this initial field survey, ARB encountered other USEPA staff, who were <br /> conducting sampling for particulate matter and also monitoring for several other <br /> ssibl hazardous/toxic Com unds. EPA staff indicated that thev had been <br /> checking for methylene chloride,phenols,and sulfur dioxide,with instruments such <br /> as a Mini-ram, Draeger tubes, and a Monotox. EPA staff also indicated that all of <br /> their monitoring had indicated normal background reading with the exception that <br /> they had gotten a 10 ppm hydrocarbon reading inside the plume adjacent to the hire. <br /> The instrument they had used for this detection was a Foxboro FID OVA calibrated <br /> on methane. <br /> ARB ,inbieut Air Monitoring Response <br /> Aber subsequent meetings <br /> with USEPA monitoring staff, <br /> held in order to coordinate <br /> activities and avoid duplication of <br /> monitoring efforts.ARB staff <br /> started monitoring on an"around- <br /> rhe-clock" basis. Analyzer <br /> readings for CO. total <br /> hydrocarbons (THC) and toluene <br /> in the plume and downwind from <br /> the fire were virtually <br /> indistinguishable from Royster's Tire Recycling Facility-8/11/98 <br /> background levels. The SCD ERT <br /> continued to peJorm this monitoring wiM simillar results until le InciMent <br /> Commander,under advice from Michael Kith, San Joaquin Co. Health Departnnent, <br /> released them at about 9 p.m. Sunday,August 9, 1998.The ARB ERT indicated to the <br /> Incident Command that they would be ready to return upon request. <br /> M-D's sampling staff was asked to place the filter samplers approximately <br /> 0.25 and 1.5 miles from the fire in the downwind(SE)direction of the plume.The <br /> filter samplers ran until 11:00 a.m. August 9, 1998.The used filters were picked up <br /> and new filters installed for sampling into Monday. The results of this monitoring <br /> were b9.3 gghn' carbon (0.25 mile downwind,SE from fixe) and 7.9 Re;S carbon <br /> (1.5 miles SE, downwind).In comparison,normal carbon concentrations in the <br />