1 methodology for estimating green house gas emissions and assessing mitigation options for project...
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Methodology for Estimating Green House Gas Emissions and Assessing Mitigation Options for Project Level Applications for O-Road Mobile Sources
Graciela Lubertino, Ph.D.H-GAC
Joe Zietsman, TTITara Ramani, TTI
Trends in Texas GHG Emissions Texas (if it were a country) would rank
seventh in the world for its GHG emissions Transportation is 30% of total CO2
VMT increased 10% per year from 1990 to 2000
VMT increased 10% from 2002 to 2007 for the Houston region
Population growth at about double the rate of the country
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Policy Issues
The 2009 EPA endangerment finding – is the most powerful federal policy to date
State level programs in Texas: TERP LIRAP HB 1795 – requires TCEQ to develop an
inventory of voluntary actions to reduce CO2 emissions
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Policy Issues
Texas municipal-level actions:
City of Houston and City of Austin working on a comprehensive climate action plan
But most municipalities still waiting for state and federal policy makers.
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Methodology for Project Level Analysis
An analytical tool in the form of a spreadsheet-based calculator
Combines the emission estimations of each project with the emission reductions from mitigation strategies
Based on user input data
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Methodology for Project Level Analysis Calculate on-road mobile source GHG emissions for
baseline year – Build vs. No-Build at completion year for the project.
Calculate on-road mobile source GHG emissions for future years.
List of GHGs control strategies. Quantifications of CO2 emission reductions
associated with the selected mitigation options. Calculations will involve the use of EPA’s MOVES
model for CO2 emissions factors and activity data from the travel demand model.
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Projects to Analyze from the Regional Plan
Roadway Traffic Flow Improvements Transit Pedestrian/Bicycle
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Selection Criteria for Control Strategies
Cost effectiveness Potential emission reductions Applicability
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Control Strategies
HOV lanes TTI and Caltrans studies showed lowest levels
of gasoline consumption against the no-build and build-general purpose.
Transit Ex: expansion transit infrastructure, ridership
increased – 10,181 MMtCO2 (by 2012 Miami-FL)
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Control Strategies
Mixed Land Use Development or “Livable Centers”
Encourage jobs/housing/commercial proximity and developments along transit corridors – 18 MMtCO2 by 2020, California
Electrification of Vehicle Fleet PZEV emit half the amount of CO2
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Control Strategies
Carbon Sequestration
Trees are a good sink of CO2
Upto 6 MtCO2e reduction per tree for a 40 year life span
Need to be taken into account how to manage them
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Control Strategies
Eco-Driving and Anti-Idling Policies
Outreach program endorsed by 20 states – info about vehicle maintenance and driving habits – 2.2 MMtCO2 by 2025, Michigan
Reduce idling time for heavy duty diesel trucks – 1.4 MMtCO2e by 2020,California
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