The BTPO region is in the Portneuf Valley Non-Attainment-Area (PVNAA) which is in maintenance portion of the PM10 non-attainment. To ensure no additional violations of the Clean Air Act occur, BTPO monitors and compares vehicle emissions to an established budget.
- Annual amount of emissions for pollutants identified in the State Implementation Plan Transportation Air Quality
Download the full 61 page Performance Measures Methodology Report by clicking the button below. (766KB PDF)