Tagindoor air quality(39)

This EPA report, prepared by David Mudarri PhD in 2018, reviews the state of science on indoor environmental quality and outlines research, policy, and program options for improving it. The synthesis paper was developed to help the EPA establish research goals, objectives, and priorities across a wide range of indoor environmental topics and time frames. It is intended solely for internal EPA use due to the inclusion of copyrighted material from broad-based review articles.

The Fresh 80 and Fresh 80-dB are Swedish-made wall ventilators designed for quick installation through an exterior wall, offering fully adjustable and closeable airflow with 360-degree draft-free diffusion. The 80-dB model includes telescoping sound-insulating tubing adaptable to various wall thicknesses, making it suitable for noise-sensitive environments. Maintenance involves washing the built-in filter once or twice a year and can be adapted for use by handicapped individuals using extended cords.

This EPA technical guide explains how residential air cleaners and HVAC filters work to reduce indoor air pollutants, covering different device types, their effectiveness, and health impacts. It reviews technologies such as fibrous media filters, HEPA filters, electrostatic precipitators, and ionizers, while noting important cautions about byproduct emissions like ozone. Though focused on home air quality rather than airport noise policy, it offers useful background on indoor environmental controls for residential settings near noise-impacted areas.

A study of residences near Boston's Logan International Airport found that jet engine exhaust significantly raises ultrafine particle concentrations both outdoors and indoors, with levels roughly 1.7 times higher when winds blow from the airport's direction. Researchers monitored 16 homes located 4–6 km from the airport and confirmed that aviation-related particles penetrate inside residences, posing potential health risks to nearby communities. While focused on Logan Airport, the authors note these findings are likely applicable to other major airports, including those in dense urban areas.

This Washington State Department of Health guide provides recommendations for schools and buildings on how to maintain healthy indoor air quality during wildfire smoke events. It advises closing windows and air intakes when outdoor air quality is hazardous, upgrading HVAC filters, and using portable HEPA air cleaners to reduce fine particles and gases from smoke. Building managers are also encouraged to monitor carbon dioxide and carbon monoxide levels indoors and take steps to flush out buildings during periods of improved outdoor air quality.

This EPA document explains how poor indoor air quality (IAQ) in schools can harm students' health and academic performance, causing absences due to respiratory illnesses and reducing the ability to concentrate, calculate, and remember. Studies show that high pollution levels, inadequate ventilation, and improper temperature and humidity control contribute to these problems. The EPA recommends schools use the IAQ Tools for Schools Kit to identify and address indoor air quality issues at little or no cost.