Maricopa County Environmental Services Department issued the following announcement on Aug. 19
The Arizona Department of Environmental Quality (ADEQ) is issuing an Ozone High Pollution Advisory (HPA) for Maricopa County, effective Monday and Tuesday, August 19 - 20, 2019. This HPA is due to ozone levels expected to accumulate enough to exceed the federal health standard for ozone.
Ground-level ozone forms when two types of pollutants — volatile organic chemicals (VOCs) and nitrous oxides (NOx) — react in sunlight. These pollutants come primarily from automobiles, but also from other sources including industries, power plants and products such as solvents and paints. Generally, the highest levels of ozone occur in the afternoon.
People most affected by ozone include children, senior citizens, people who work or exercise outdoors and people with pre-existing respiratory disease. Ozone can irritate the respiratory system, aggravate asthma and reduce the immune system’s ability to fight off respiratory infections. Ozone-related health problems include shortness of breath, coughing, wheezing, headaches, nausea, and throat and lung irritation.
This High Pollution Advisory includes the following restrictions:
Employees and contractors of government entities are prohibited from operating leaf blowers.
Wood burning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is restricted.
Employers and Travel Reduction Program Transportation Coordinators are advised to activate their HPA Plans immediately. ADEQ further recommends that the general public limit outdoor activity while the HPA is in effect, especially children and adults with respiratory problems.
ADEQ, Maricopa County Air Quality Department (MCAQD) and Valley Metro recommend residents and businesses use the following tips and resources to reduce ozone pollution and make the air healthier to breathe:
Drive as little as possible, carpool, use public transit or telecommute
Re-fuel your vehicle after dark
Avoid waiting in long drive-thru lines, for example, at coffee shops, fast-food restaurants or banks – park your car and go inside
Visit ShareTheRide.com to plan a transit trip or find a carpool or vanpool
Use low-VOC (Volatile Organic Compounds) or water-based paints, stains, finishes and paint strippers and delay big painting projects
Make sure containers of household cleaners, garage and yard chemicals and other solvents are sealed properly to prevent vapors from evaporating into the air
Visit CleanAirMakeMore.com to learn more about reducing air pollution
High Pollution Advisory (HPA): Notifies the public that the level of an air pollutant is expected to exceed the federal health standard
Health Watch: Notifies the public that the level of an air pollutant is expected to approach the federal health standard
Ozone: Ground-level ozone is formed by a chemical reaction among sunlight, nitrogen oxides (NOx) and VOCs
Original source can be found here.