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Real-Time Air Data
Week of September 15, 2008
- Real-Time air (dust) 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.
The
real-time monitors will be moved around on a daily basis based on
the location of work activities for the day.
Click on the date below to view graphs showing the real-time
air monitoring data for the week of September 15, 2008.
Monday, September
15, 2008 (working hours)
Monday, September 15, 2008 (non-working hours)
Tuesday,
September 16, 2008 (working hours)
Tuesday,
September 16, 2008 (non-working hours)
Wednesday,
September 17, 2008 (working hours)
Wednesday, September 17, 2008
(non-working hours)
- Air
Monitor 6 lost power and stopped working at
approximately 12:42 am. The ground was wet when
AGC employees left the Site on Wednesday evening and
when they returned to work on Thursday morning. We
do not feel there was any potential for any significant
dust generation during the period when the monitor
wasn't working. As you can see by clicking
on the link above in orange, the results for the other
two monitors that were running during the overnight
hours were all below the action levels. Co-located
lead samples were collected at the same time as the air
monitors ran.
(Click here to
review the data.)
Thursday, September 18, 2008 (working hours) -
Air Monitor 1 had three half hour average readings recorded that
were at or above the Action Level for the area it was in. There was no
visible dust and the work area was wet. No additional dust
control action was necessary. Co-located samples were
collected at the same time as the air monitors ran and data for
those samples will be provided on this page once it is
available.
Thursday, September 18, 2008 (non-working
hours)
Friday, September 19, 2008 (working hours)
Friday, September 19, 2008 (non-working
hours)
Saturday, September 20, 2008 (working hours)
Weekend, September 20, 2008
through September 21, 2008 (non-working hours)
-
Air Monitors 2, 4, and 6 had half hourly average readings recorded that
were at or above the Action Level for the areas they were in. There was no
visible dust observed by AGC or SCE representatives checking the
Site and the work area was wet. SCE wet the work area three
times and ran the Dust Boss to mist the air on Sunday, September 21,
2008, in order to make sure there was no dust. The perimeter
high volume air samplers collected air lead samples throughout the
weekend. All results were below the National Ambient Air
Quality Standard of 1.5 ug/m3.
(Click here to view
tables with those sample results.)
(Click here to view the locations of the perimeter high volume air
samplers with the sample results.)
Page Last Modified
Tuesday March 02, 2010 02:46:25 PM
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