Dear friends and colleagues,

Our recent symposium, "Green Fleets: The Future is Now," generated a great deal of interest and excitement about natural gas vehicles.

In response, representatives from several large fleet operators and natural gas producers are in the early stages of organizing a Metroplex Natural Gas Vehicle Consortium.

Two...

Air Monitoring Comparison Values (AMCVs) are used to evaluate the potential for effects to occur as a result of exposure to concentrations of constituents in the air. AMCVs are based on data concerning health effects, odor, and vegetation effects. They are not ambient air standards....