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The goal of the West Coast Collaborative is to leverage significant federal funds to reduce emissions from the most
polluting diesel sources in the most affected communities. The Collaborative seeks to significantly improve air quality
and public health by targeting the highest polluting diesel engines and equipment with the cost effective control strategies.

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DERA 2020:

Tugboat Electrification Project at
Port of San Diego

Under the 2020 Diesel Emissions Reduction
Act (DERA) National Clean Diesel Program,
the U.S. Environmental Protection Agency's
(EPA) West Coast Collaborative awarded a
$2,017,660 grant to the San Diego County
Air Pollution Control District to replace a
diesel-powered tugboat with a new tugboat
powered by a zero-emission electric
propulsion system.

What is the project?

EPA's Pacific Southwest Region 9 provided a grant to
the San Diego County Air Pollution Control District
(APCD) to replace one Tier 2 diesel-powered tugboat,
used in vessel escort operations at the Port of San
Diego, with a new tugboat powered by a zero-
emission electric propulsion system.

Why is this project important?

Exposure to diesel exhaust has been associated with
decreased lung function and 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. The tugboat
to be replaced under this project operates full-time at
the Port of San Diego, where nearby communities face
significant air quality challenges. In addition, the San
Diego Air Basin remains in non-attainment for ozone.
San Diego County is also designated by US EPA as an
air toxics assessment area where much of the
population is exposed to more than 2.0 |ig/m3 of diesel
particulate matter emissions. The tugboat to be
upgraded in this project operates near the Portside
Community of San Diego, which is disproportionately
affected by heavy-duty diesel pollution from goods

movement operations at the Port of San Diego and
along nearby major transport corridors.

What are the environmental & health
benefits?

These equipment replacements will reduce emissions
of NOx by 204 tons, fine particulate matter by 3 tons,
and carbon dioxide by 5,220 tons over the project
lifetime. The project will also save over 44,200 gallons
of diesel fuel over the project lifetime.

How was this project funded?

The EPA, through the West Coast Collaborative,
provided $2,017,660 in DERA National Program grant
funds to the San Diego County APCD to enable the
implementation of this project. San Diego County
APCD and project partner Crowley Marine together
provided $17,611,637 in matching funds.

What is the West Coast Collaborative?

The WCC is an ambitious partnership between leaders
from federal, state, local, and tribal government, the
private sector, and environmental groups committed to
reducing diesel emissions along the West Coast. The
WCC is part of the US EPA National Clean Diesel
Program (www.epa.gov/cleandiesel).

How can I find out more information?

For more information on this project, please contact
Francisco Donez at US EPA (donez.francisco(5)epa.gov
or 213-244-1834). For more information on the WCC,
please visit our website,
www.westcoastcollaborative.org.

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