Safety
safety
Air Quality Index Flags
(5) EPA calculates the AQI for five major air pollutants regulated by the Clean Air Act: ground-level ozone, particle pollution (also known as particulate matter), carbon monoxide, sulfur dioxide, and nitrogen dioxide. The color of the flag matches EPA's Air Quality Index (AQI): green, yellow, orange, red, and purple. epapennants.jpg Airfield Safety Flags
High Visibility International orange / white checkered pattern, printed heavy nylon, USA made (Annin & Co.) with open sleeve pole band, stitched at top to fit over a standard 3/4" - 1" wood dowel, wood or rebar dowel, flat wood stake, etc. airfieldsafety.jpg 