The New Transformer Sequel: “Transportation Engineer Becomes Atmospheric Scientist” Richard H. Osa, QEP* Mn/DOT – ACEC/MN Annual Consultant Conference Partnering – Innovation – Multimodal March 1, 2011 Earle Brown Heritage Center *with technical assistance, courtesy of Tom Fidler, P.E.,
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The New Transformer Sequel: Transportation Engineer Becomes Atmospheric Scientist Richard H. Osa, QEP* Mn/DOT – ACEC/MN Annual Consultant Conference Partnering.
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The New Transformer Sequel:“Transportation Engineer Becomes Atmospheric Scientist”
Richard H. Osa, QEP*
Mn/DOT – ACEC/MN Annual Consultant Conference
Partnering – Innovation – Multimodal
March 1, 2011
Earle Brown Heritage Center
*with technical assistance, courtesy of Tom Fidler, P.E., Bonestroo
Transformers…
…Traditionally Tough On All Modes Of Transportation
Already very close to natural background concentrations…especially in the western (drier) states
Next NAAQS review is going to be late—maybe proposal in summer 2011; promulgation in 2012?
Today’s Message: Changes Are Coming--Ozone
▫ O3
Still struggling with “old, old” 1-hr standard in legacy non-attainment areas
Making progress on the “old, new” (1997) 8-hr standard (85 ppb)
“Phase 2” implementation rule for “old, new” 8-hr standard being contested; resolution expected ???
“New, new” (2008) 8-hr standard (75 ppb)
Ozone standard is coming frighteningly close to natural background concentrations
Managed by controlling VOC and/or NOx emissions
Today’s Message: Changes Are Coming—CO & Lead
▫ CO
1/28/2011 EPA proposes no change to NAAQS (Hooray!!!)
Additional air monitoring proposed
▫ Pb
11/12/2008 EPA reduced standard from 1.5 µg/m3 to 0.15 µg/m3, 24-hour average
12/14/2010 additional air monitoring required
Today’s Message: Changes Are Coming
▫ Just because a monitor shows NAAQS compliance does not mean you’re off the hook…
▫ Modeling may not be as “forgiving”; modeled violations may pose just as effective a barrier to a project as monitoring
So…Let’s Look At Modeling and NO2 Compliance
Distance From Hwy Centerline (m)
Transportation Design to Reduce Carbon Footprint
▫ Simulation compared traffic flow, projected fuel consumption, and greenhouse gas emissions (i.e., “carbon footprint”) of traditional signalized intersections with an alternative configuration using roundabouts