The goal of the West Coast Collaborative is to leverage federal funds to strategically reduce emissions from the most polluting diesel sources in
impacted communities. The Collaborative seeks to improve air quality and public health by targeting the highest polluting engines with the most cost
effective control strategies.
DERA 2018: School Bus&
Short-Haul Truck
Replacements in Arizona
The West Coast Collaborative (WCC) is pleased to
announce the Maricopa County Air Quality Department's
(MCAQD's) completion of a United States Environmental
Protection Agency (US EPA) Diesel Emissions Reduction
Act (DERA) State Program grant to replace legacy heavy-
duty diesel school buses and short-haul trucks in Arizona.
This project was implemented using $414,882 in DERA
grant funding combined with $276,588 in matching funds
from the Arizona Department of Environmental Quality
(ADEQ), and $1,790,817 in cost-share funds from
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What is the Project?
This project replaced 16 legacy heavy-duty diesel vehicles with:
10 model year 2020 propane (LPG) school buses, 4 model year
2020 diesel school buses, and 2 model year 2019 Class 7
diesel short-haul trucks. The older, replaced vehicles were
removed from service and permanently destroyed.
Why is this project important?
This project's primary objective is to improve the environmental
health by partnering with school bus and trucking fleet
operators to replace high-emitting, legacy heavy-duty diesel
vehicles with modern clean diesel and alternative fuel
technologies, Exposure to diesel exhaust has been associated
with decreased lung function and retarded lung development
and can also exacerbate the symptoms of asthma, bronchitis
and pneumonia. This project will reduce human exposure to
diesel emissions as well as the negative health effects
associated with exposure, Expected unquantifiable benefits of
the project include increased awareness of the need to
improve air quality, particularly among Arizona residents and
others concerned with health and welfare,
What are the Environmental Benefits?
Over the remaining lifetime of the 16 affected engines, these
upgrades are estimated to reduce emissions of fine particulate
matter (PM2.5) by 0,7 ton, oxides of nitrogen (NOx) by 8.9
tons, hydrocarbons (HC) by 1.3 tons, carbon monoxide (CO)
by 4.7 tons, and carbon dioxide (CO2) by 169 tons.
Additionally, the reduction of PM2.5 emissions will also reduce
black carbon (BC), which influences climate by directly
absorbing light, reducing the reflectivity ("albedo") of snow and
ice through deposition, and interacting with clouds, The project
will also conserve over 72,000 gallons of diesel fuel.
Who are the Partners on this project?
The project was led by MCAQD, a local agency whose mission
is to provide clean air to Maricopa County residents and
visitors, in partnership with ADEQ and participating fleets.
MCAQD received the DERA grant award through the WCC,
and distributed the grant funds to participating fleet operators:
Deer Valley Unified School District, Turbine Alloys, Yuma
Elementary School District, and Yuma Union High School
District. MCAQD will be responsible for data monitoring and
reporting for the project,
What is the Collaborative?
The WCC is an ambitious partnership between leaders from
federal, state, local, and tribal government, the private sector,
academia, and environmental groups committed to reducing
diesel emissions along the West Coast, Partners come from all
over Western North America, including: Alaska, Arizona,
California, Hawaii, Idaho, Nevada, Oregon, Washington,
Canada, Mexico and the Pacific Islands. The WCC is
facilitated by the US EPA DERA Program.
https://www.epa.gov/dera
How can I find out more Information?
For more information on this project, please contact John
Mikulin at US EPA (mikulin.iohn@epa.gov I 415-972-3956).
For more information on the WCC, please visit our website,
www.westcoastcollaborative.org
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