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Air Data
Available for Thursday, August 20, 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 had several hourly average readings recorded
that were above the Action Level for the areas they were in
during non-working hours on August 20, 2009. The
co-located (PAM) lead samples from the Air Monitor 2 location
was sent in for analysis.
(See the
Co-Located Lead Samples
section below for the result.)
Click on the
link below to view graphs showing the real-time air
monitoring data for August 20, 2009:
Working Hours Non-Working Hours
-
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. Note: On August 20, there was not a
dust monitor at the secondary Sulphur Creek location, so the PAM sample was
sent in for analysis. Click below to view data for August
20,
2009,
Working Hours
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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