Friday, April 6, 2012

Monitoring Pollution from Downtown Construction and from Traffic in a Large City

Air Quality Monitoring Study of Construction Activities between 69th and 87th Street on Second Avenue (22 page pdf, Parsons Brinkerhoff, MTA Capital Construction, Jan. 17, 2012)

Today we review an interesting study from New York City, where health concerns about dust from road construction were addressed by an assessment of air quality by roadside monitors . Results indicate that the levels of high pollution on 3-6 days of the month monitored were due to traffic and not from blasting or other construction activities.  





Key Quotes:  
the dust generated by underground blasting operations for the excavation of the station caverns has contributed to visible sources of construction dust. Concerns over the potential health effect on the adjacent public of these dust particles and other pollutant emissions that could result from construction triggered the need for this air monitoring study”

The monitoring results for PM10 (i.e., coarse particles) indicate that daily (24-hour average) levels were lower than the PM10 reference level of 150 ug/m3, with weekday levels ranging from 15 to 60 ug/m3, and weekend levels from 5 to 40 ug/m3”  

daily PM2.5 concentrations were primarily attributed to local traffic emissions, other local sources such as commercial and residential boilers, and regional or background levels, with no significant contribution from blasting activities.”

“Of the gaseous pollutants, SO2 levels exceeded the reference levels on six different days”
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