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Air Data
Available for Saturday, July 11, 2009
- Real-Time air monitoring (Near Field Zone monitoring) - this type of air
monitoring will determine if dust is migrating outside of the
immediate work area so that additional dust control measures can be
implemented before any dust can move off-site. This
monitoring will consist of continuous, real-time dust
monitoring upwind and downwind of the work zone during all
phases of work with potential for significant release of dust (i.e.,
during soil excavation, backfill, waste placement, and cap
installation.) Real-Time monitoring provides immediate
information on the amount of dust (not just lead) being generated.
Note:
On July 11, 2009, only stabilization activities were taking
place; there were no earth moving activities, so there was
not a distinction between working hours and non-working
hours.
Click on the
links below to view graphs showing the real-time air
monitoring data for July 11, 2009:
Weekend Non-Working Hours
- Site Perimeter Monitoring - this kind of air monitoring consists
of ambient air monitoring for lead using the high-volume sampler method,
which is what has been used for the past 20 years at the Site. This sampling
will determine if air lead is being emitted from the Site. Results with this
type of monitoring are not immediate as the air collection filters have to
be sent to a lab for analysis. The sampler draws
air over a filter and then the filter is analyzed for lead content. The
volume of air that is drawn in is also recorded which gives us the results
of micrograms (µg) of lead in cubic meters (m3) of air.
(Click here for a drawing
showing the locations of the high volume air samplers.)
24-hour Ambient Air Monitoring
Results - results from July 11, 2009
(Click here to go back to the
July 2009 calendar page.)
Page Last Modified
Thursday November 05, 2009 12:25:53 PM
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