CARB proposes evaporative standards for on- and off-road vehicles

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To lower evaporative emissions from powersports units by the 2014 model year, California is proposing standards and test procedures that the MIC claims will be expensive and difficult for manufacturers to implement.

CARB is hosting today a public workshop to discuss a draft proposal to regulate — equally — evaporative emissions from streetbikes and off-road vehicles. In addition to performance standards, CARB proposes an ORVR (Onboard Refueling Vapor Recovery) standard, emissions credits for low-emitting vehicles (including electric units), and mandated compatibility relating to fuel and Phase II vapor recovery.

CARB has posted on its website the presentation it will use during the workshop. According to the presentation, the MIC says that ORVR and/or Phase II vapor recovery compatibility is technically difficult, expensive and “possibly unsafe.” CARB says it’s open to other solutions that will control a similar amount of emissions.

The MIC also says that one of the proposed procedures, the running loss test, is expensive for manufacturers. CARB is willing to consider alternate test procedures that can verify running loss reductions.

Another MIC comment, according to the presentation, is that the “lead time may be inadequate for manufacturers to make changes and install expensive test equipment.” CARB responds by requesting that manufacturers provide detailed lead time estimates.

The MIC also has suggestions. It thinks CARB should have fuel compatibility limitations, be careful when using survey data, make all test data available, consider anti-tampering requirements, and consider the economic conditions when implementing the new rule.