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Air Data
Available for Sunday, August 16, 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: Air Monitor 2 and Air Monitor 6 each had one hourly average reading recorded
that was above the Action Level for the areas they were in
during non-working hours on August 16, 2009. The
co-located (PAM) lead samples from the Air Monitor 6 location
was sent in for analysis.
(See the Co-Located Lead Samples section below for
the sample result.)
The high volume air monitor sample from the Air Monitor 2
location was also sent in for analysis.
(See the
Site perimeter monitoring section below for the sample result.)
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 August 16, 2009
Non-Working Hour Ambient Air Monitoring
Result - result from weekend August 14, 2009 to August 17, 2009
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Co-Located Lead Samples -
this type of air
monitoring consists of air monitoring for lead using personal air monitors (PAMs).
For this monitoring, the PAMs are placed at the same location as the
Real-Time (Dust) Air Monitors or along the perimeter fenceline. This sampling is in addition to what is
required by the 100% Design. The samples are analyzed by a method
that provides a detection limit similar to the detection level that is used
for the perimeter high volume air samplers. This allows us to compare the
co-located sample results with the results that we obtain every six days
from the perimeter high volume air samplers. The co-located samples are also helpful in
providing data when exceedances occur at one of the dust monitors.
The real-time dust monitors are moved around on a daily basis based on the
location of work activities for the day; the co-located samples are located
with the dust monitors each day. Click below to view data for August
15,
2009,
Working Hours
Weekend
Non-Working Hours
(Click here to go back to the
August 2009 calendar page.)
Page Last Modified
Tuesday March 02, 2010 02:45:28 PM
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