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


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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.


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