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Retrofit Success Stories
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City/State Fleets
City of Fresno Fleets Program (Fresno, CA)
State Department of Transportation "Greening the Fleet" Program (Sacramento, CA)
City of Fresno Fleets Program
Project Location:
Fresno, CA
Project Description:
The City of Fresno is taking a broad based approach to air quality by applying a variety of efficient control strategies to the city's on-road and off-road fleet. This approach includes alternative fuel engines in a portion of newly purchased vehicles as well as retrofitting diesel equipment that has a remaining useful life. The city is also the only metropolitan area in the San Joaquin Valley, an extreme ozone non-attainment area, to operate its entire diesel fleet on ultra-low sulfur fuel (ULSD).
The city works through the fleet on an application-by-application basis. Some types of equipment are good candidates for retrofit products like particulate filters, while others are more amenable to technologies such as diesel oxidation catalysts (DOCs).
Emissions Reductions Strategies:
The City has pioneered the use of new retrofit technologies that reduce emissions of nitrogen oxides (NOx) and particulate matter (PM). They have installed systems in standard, on-road applications as well as installing Cleaire Longview® system on a variety of construction equipment. Several of these systems have been in operation for over a year, providing valuable proof that aggressive retrofit of off-road sources is feasible.
To date, the city has retrofitted bucket loaders, tractors, and wheel loaders, as well as on-road equipment including refuse trucks and transit buses. The City frequently specifies emission control products when ordering new equipment, ensuring the City's fleet is as clean as possible. Ongoing projects include the installation of Cleaire Longview® on 62 buses, 40 refuse trucks and the planned retrofit of three scrapers, a notoriously challenging retrofit because of duty cycle and rugged use.
Emissions Benefits:
The emissions reductions from the 62 transit retrofit project alone will reduce at least 21 tons per year of NOx and .18 ton per year of PM.
Project Contact:
Matt Otstot
Public Affairs Officer, City of Fresno
(559) 621-7777
Visit the website.
State Department of Transportation "Greening the Fleet" Program
Project Location:
Sacramento, CA
Project Description:
The California Department of Transportation's (Caltrans) Greening the Fleet program is a five-year plan initiated in August 2000 to lower emissions from its fleet of 14,000 vehicles. This is the largest and most diverse mobile fleet in California and includes sweepers, heavy-duty trucks, pickup trucks, sedans, and off-road construction equipment such as motor graders.
Emissions Reduction Strategies and Benefits:
Caltrans' goal is to reduce emissions of nitrogen oxides (NOx) and particulate matter (PM) through various engine and equipment retrofit and repower strategies such as:
Use of ultra-low sulfur diesel fuel (ULSD) - This cleaner fuel is now used at more than 132 locations and will be installed at an additional nine sites over the next few months. This year Caltrans has received deliveries of more than 3.4 million gallons of ULSD from BP. Calculations indicate that using this fuel in the Caltrans fleet will remove 10 tons of particulates from the air annually.
Diesel exhaust retrofit - Emission control systems such as particulate filters are being used to retrofit existing heavy-duty diesel vehicles. As one example, Caltrans recently retrofitted 112 vehicles with the Cleaire Longview®, a muffler replacement unit that primarily reduces NOx and PM.
To implement the program, Caltrans is working closely with manufacturers of clean technologies and other agencies such as the California Energy Commission, Sacramento Metropolitan Air Quality Management District and California Air Resources Board. The American Lung Association, the Sacramento Area Council of Governments, and the California Transportation Foundation have honored Caltrans for its efforts.
Funding:
Funds for this program come from a variety of sources over its five-year program life and cost of $221.352 million. One such funding source is the Equipment Service Fund - a State of California program that provides annual allocations that help fund regular replacements for its equipment and vehicles. The California Department of Transportation (Caltrans) has also established an Internal Services Fund of the Equipment Services Center that allows any savings achieved by using newer technologies (e.g., fuel savings) to be put back into this program. Additionally, Caltrans has indicated that it may seek other funds from programs like Carl Moyer to offset any impacts on the State Highway Account (its principal source of funding for operations and capital expenses).
Project Contact:
Sri Balasubramanian
Acting Chief, Division of Equipment
California Department of Transportation
(916) 227-9600
Balasubramanian@dot.ca.gov
Visit the website.
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