|
Transportation Coordinators
Due to unhealthy levels of particulate matter, Maricopa County Air Quality Department requests all Transportation Coordinators to email employees and activate your HPA plans. The department encourages the use of alternative modes of transportation, especially when pollution levels are expected to be on the rise.
PM-2.5 stands for particulate matter measuring 2.5 microns or less. State and county agencies measure PM-10 and PM-2.5 which are extremely small solid particles and liquid droplets found circulating in the air. PM, or particulate matter, comes from either combustion (cars, industry, woodburning) or dust stirred up into the air. High levels of PM are typically created when the air is especially stagnant.
"High Pollution Advisory" or "HPA" means the highest concentration of pollution may exceed the federal health standard. Active children, adults and people with lung disease such as asthma should reduce prolonged or heavy outdoor exertion. Maricopa County employers enlisted in the Travel Reduction Program are asked to activate their HPA plans on high pollution advisory days.
|