School Buses A Safe Way To Travel

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School Buses A Safe Way To Travel
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School Buses A Sustainable Way To Travel
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What Is The Concern?

• Energy fuel economy
• Climate change
• Emissions air quality

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U.S. Energy Flow - 2002
Quadrillion BTUs
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Well to Wheel Energy Use
BTU per mile
Conventional
E90
CNG
B20
LPG
Diesel
Gasoline
from Fuel Options for Reducing GHG Emissions
from Motor Vehicles, US DOT, September 2003
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Global Warming Factors
From Hansen and Saito, 2001
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Diesel Engines and Air Quality

• Diesel exhaust is a complex mixture of gases and
  fine particles
• Engines have historically contributed significant
  amounts of NOx, particulate matter to air
  pollution

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Exposures Inside School Buses

• Personal exposure monitors for PM 2.5
• Levels 5 10 times higher than ambient averages
• California study estimates cancer risk increases
  by 4, asthma risk by 1

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On Road Diesel Engine Emission Standards
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Oregon Clean Diesel Initiative

• Burn Cleaner Fuel
• Burn Fuel Cleaner
• Burn Less Fuel

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Burn Cleaner Fuel - Biodiesel

• Vegetable oils and/or waste grease refined to
  diesel fuel
• Biodegradable, nontoxic, renewable fuel
• Reduces PM, CO, VOCs Increases NOx
• Can be blended (20) or used neat
• Excellent lubricity
• Cost, high cloud point

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Burn Fuel Cleaner

• Biodiesel enhances performance of Particulate
  Filters
• Extends application to cooler running engines
• May reduce regeneration in active systems
  saves fuel!

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Cost Effectiveness of Alternative Control Options
From Alternative Diesel Fuel Symposium, August
2003, California Energy Commission
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Clean vs. Dirty Diesel

• CONVENTIONAL RETROFITTED
• Real time measurements of particulate matter
  pollution inside a car chasing a diesel truck
  before and after retrofitting.
• Courtesy of Clean Air Task Force

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Clean School Bus USA

• School Districts and ESDs can apply DEQ can
  help
• Anticipated awards up to 725,000, averaging
  200,000
• 5 cost share
• Fund retrofits, engine upgrades, cleaner fuels,
  bus and/or engine replacement
• Buddy program
• DEQ will also apply and work directly with
  districts

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Clean School Bus Goal
HB 2172 directed EQC to adopt a goal to
substantially reduce the risk to school
children from diesel engine emissions produced by
Oregon school buses by the end of
2013. Advisory Committee is recommending a goal
to have all buses, either through replacement or
retrofit, meet the 2007 emission standard by
2017.
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Clean School Bus Goal
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Clean School Bus Goal

• Approximately 6,535 Oregon school buses
• Up to 5,800 are diesel powered
• Average age is 13 years
• To meet the goal means
• Replacing 590 buses
• Retrofitting 1,400 buses

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Sustainable Practices With School Buses
Now!

• Use ultra low sulfur fuel and biodiesel
• Minimize idling time at schools and events
• Maintain vehicles to reduce smoke and odors
• Use newer buses more often and for longer routes
• Install exhaust filters

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Its Not Cool To Idle At School
Suited for 5th to 8th grade
students Learn the scientific principles of
observation and reporting, while engaging in
social change. Toolkits provided by Oregon
Environmental Council
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Oregon Clean Diesel Initiative
Oregon Clean Diesel Initiative
Over 19 million a year in benefits to public
health and the environment
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Projected Diesel PM Risk in Oregon
Reduce risk to 1 in a million by 2017
2017
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Make Something Better
Used with permission, Weiden Kennedy
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Oregon Clean Diesel Initiative

• Reducing diesel PM emissions has multiple
  benefits
• Cancer risk
• Other toxics, e.g., formaldehyde
• Asthma induction and incidence
• Global warming
• Visibility, regional haze
• PM2.5 attainment

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Oregon Clean Diesel Initiative

• For more information
• Kevin Downing
• DEQ Air Quality
• 503.229.6549
• downing.kevin_at_deq.state.or.us