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Regulated Businesses
Due to the expected high winds, businesses conducting dust-generating operations need to be vigilant of their dust control measures. Workers may need to cease operating, after stabilizing disturbed areas, if water application and other dust control measures prove ineffective.
Maricopa County Air Quality Department inspectors will be conducting surveillance of fugitive dust sources in the county on days that are deemed high risk for particulate matter. Sources observed violating the particulate matter standards will be issued Notices of Violation.
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.
Remind employees that they are encouraged to make more clean air. By taking small, simple steps every day, we can all make a difference. Additional tips on how to reduce air pollution can be found at www.CleanAirMakeMore.com.
PM-10 stands for particulate matter measuring 10 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.
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.
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