CARB advisory explains TRU compliance measures

Dec. 29, 2010
The California Air Resources Board (CARB) has posted TRU (transport refrigeration unit) Advisory 10-20 on the TRU website.

The California Air Resources Board (CARB) has posted TRU (transport refrigeration unit) Advisory 10-20 on the TRU website. The board adopted amendments to the TRU Airborne Toxic Control Measure (ATCM) on November 18, 2010. Advisory 10-20 explains what owners of model year 2003 TRUs and TRU generator-set owners need to do as a result of the 2010 amendments.

Owners of TRUs and TRU gen-sets equipped with model year 2003 engines should make compliance decisions now and order compliance technology as soon as possible so compliance with either the ultra-low-emission TRU (ULETRU) or low-emission TRU (LETRU) in-use performance standard is achieved by March 31, 2011. Orders should be placed early, taking into consideration the delivery and installation lead times, which can be several weeks to several months.

Owners of TRUs equipped with flexibility engines that were manufactured in 2005, but meet the 2003 emissions standards (ie, Tier 1 engines), will not need to comply with the in-use standards by December 31, 2010. Instead, compliance will be required by Dec 31, 2012, seven years after the engine manufacture year. Owners of TRUs that are equipped with flexibility engines need to be registered in CARB’s Equipment Registration (ARBER) system so compliance dates for these engines can be adjusted. TRU original equipment manufacturers are providing flexibility engine manufacture dates to CARB. The board will adjust the “Compliant Until” dates in ARBER. Updated registration certification pages will be mailed to the owners of ARBER-registered TRUs equipped with flexibility engines by the end of the year.

More detailed information is provided in TRU Advisory 10-20, which is posted at

Instructions for registering TRUs and TRU gen-sets in ARBER are provided at Questions on the ATCM or 2010 amendments may be e-mailed to [email protected] or phoned to 1-888-878-2826.

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