Update: This appears to be bogus information. It was based on a CBS Ch-13 Report. A follow up with the NCTC Staff and CARB indicates that they are not delaying implementation.
Update #2: This from CARB:
SACRAMENTO - A few media outlets have recently run stories wrongly stating that the Air Resources Board has canceled the promulgation of a new proposed regulation aimed at cleaning up the 400,000 plus diesel trucks driving along California roadways. This is completely false. The Air Resources Board is currently set to vote on this extremely important proposed public health regulation at its December hearing in Sacramento. We are currently calling media outlets to determine where they received their false information, and also demanding corrections.
CARB has put the new diesel soot regulations on hold. These clean diesel regulations were to kick in in 2010, but now are being withdrawn. The multi-billion dollar cost was going to be too great. This will benefit the County, Cities and business that depend on diesel equipment, such a Robinson Timber. They will not have to retrofit the diesel equipment, or buy new equipment equipped with clean diesel engines.
Now if they would just get real on greenhouse gas regulations. I guess there is still hope!