The ARB has determined that the Caterpillar 3500 Marine Engine Emissions Upgrade Group Kit 3 meets the requirements of the Commercial Harbor Craft (CHC) Regulation for complying with the Tier 2 marine or equivalent emission standards while operating on California Air Resources Board (CARB or ARB) diesel fuel. A vessel owner may choose to use this engine rebuild kit to comply with ARB's CHC Regulation Tier 2 or equivalent compliance requirements per the California Code of Regulations title 17, section 93118.5(e)(6)(C)(2).
This new alternative technology has been added to the table of alternative technologies which can be accessed at:
An ARB letter acknowledging the acceptance of this new technology can be accessed at this same website.
The CHC regulation was adopted in November 2007 and became effective in January 2009. Commercial harbor craft includes crew and supply vessels, commercial fishing vessels, ferries, excursion vessels, pilot boats, tow boats, tug boats, barges, dredges, and work boats. The CHC regulation requires existing Tier 1 and earlier auxiliary and propulsion engines on in-use ferries, excursion vessels, tugboats, towboats, crew and supply vessels, barges, and dredges to meet United States Environmental Protection Agency Tier
2 or Tier 3 marine engine standards in effect at the time compliance is required. This regulation is part of ARB's ongoing effort to reduce diesel particulate matter in communities located near ports.