The approach used to create inventories was the same as that used for the Heavy-Duty Engine (HDE) Rulemaking analysis (US EPA, 2000d) with modifications to reflect emission and modeling advances since that analysis.
The process used to make HDE rules was the one used, with changes to customize the study.
No modifications to the analysis were made.
kids playing in play ground
Comments on the provisions were collected from the public.
The dog is outdoors.
There is a woman sleeping.
A boy is sleeping on his bed.
A man is wearing an outfit