BACT Percentage Choices

摘要

Complying via BACT Percentage Limits offers truck-fleet owners flexibility to select which vehicles to upgrade first, but requires users to report fleet information annually. The table's middle column lists minimum percentages of fleet engines that need Level 3-verified particulate-matter (PM) filters, The right column holds the percentage of fleet engines matching 2010-model-year emissions standards needed to satisfy NOx BACT requirements.