Not shown on map Anchorage, Alaska Honolulu, Hawaii • San Juan, Puerto Rico United States Environmental Protection Agency EPA Plans to Monitor N02 Concentrations Near Roads &EPA EPA Plans to Mor in 102 Urban Areas 24 areas would require 2 monitors (> 2.5 million population or road segments with annual average daily traffic counts > 250,000 vehicles) Minimum Near-Road NOz Monitoring Requirements ,/% 78 areas would require 1 monitor (> 500,000 population) 126 total monitors Approximately 40 additional monitors will be placed in locations to help protect communities that are susceptible and vulnerable to N02-related health effects ------- Ik United States I- Environmental Protection * W I Agency EPA to Monitor N02 Concentrations Community-Wide ori map Puerto Rico Hawaii Minimum Community-wide N02 Monitoring Requirements <^> 53 areas would require 1 monitor (> 1 million population) # 418 existing N02 monitoring sites in 2008 Many of these sites would satisfy the proposed community-wide monitoring requirements. ------- |