Description: Air quality in most areas of Washington State is protected by local clean air agencies. Tribes protect and have authority over their tribal lands. Areas are based on county boundaries except for tribes where the boundary is the reservation. Ecology's regional offices have authority in all other areas
Service Item Id: b1ffb4006a034dcb983d3f691c69f5c8
Copyright Text: Washington State Department of Ecology, Air Program
Description: The Washington Department of Ecology (Ecology) defines designated areas as areas expected to have 24-hour PM2.5 design values exceeding Ecology's healthy air goal of 20 µg/m^3. The form of the PM2.5 design value is the 3-year average of the annual 98th percentile 24-hour average concentrations. These areas were identified using a combination of model output from the Air Indicator Report for Public Awareness and Community Tracking (AIRPACT-4) forecast model and measured PM2.5 concentrations at monitoring sites operated by Ecology and its partner agencies. All input datasets cover the time period July 2014 – June 2017, which was the most recent continuous 3-year period available with minimal wildfire influence. Wildfire data were not removed completely from the dataset; rather, data were chosen and filtered to minimize the influence of wildfires due to inconsistent model performance and extreme outliers during wildfire periods. Design values were interpolated using the following steps:Median daily AIRPACT-4 forecast PM2.5 concentrations were extracted at 4km grid cell centroids. The ratio between the measured 98th percentile PM2.5 concentration (as a surrogate for the 24-hour design value) and the nearest grid cell's median daily AIRPACT-4 forecast PM2.5 concentration was calculated for each monitoring site. The ratios were interpolated across the domain at 4km resolution using Empirical Bayesian Kriging.Interpolated ratios were multiplied by median daily AIRPACT-4 forecast PM2.5 concentrations to yield interpolated PM2.5 design values. Grid cells with design values above Ecology's healthy air goal of 20 µg/m^3 were extracted and dissolved into smoothed polygons. Only polygons with ≥3 contiguous grid cells were retained due to model uncertainty in small areas. Polygons were overlaid with city, census-designated place, and urban growth area boundaries from 2020 Census TIGER/Line files. Where polygons intersected with any of the above census-defined boundaries, the largest of the intersecting boundaries defines the designated area.Ecology plans to update the designated areas layer at least every five years in conjunction with its 5-year Ambient Air Monitoring Network Assessment.
Description: Ambient monitoring measures the status of air quality throughout the state to assess trends, compliance with federal and state air quality standards, effectiveness of control strategies and attainment plans, health effects and environmental damage; respond to citizen complaints; evaluate specific geographic or hot-spot air quality concerns; and create environmental indicators. Emission inventory is the cataloging of sources of air pollution and the emissions from those sources. Inventory data are critical to the understanding of the causes of air pollution problems and creation of appropriate solutions. Meteorological forecasting and dispersion modeling of air pollutants are essential to understanding the movement and buildup of air pollution; the carrying capacity of airsheds; the interaction of pollutants; and the location of maximum impact of sources of pollution. As of September 26, 2005 there are no longer any areas of Washington designated as "NONATTAINMENT."This dataset is maintained by the Washington State Department of Ecology's Air Quality Program (AQ).
Service Item Id: b1ffb4006a034dcb983d3f691c69f5c8
Copyright Text: Washington State Department of Ecology, Air Quality Program
Color: [0, 0, 0, 255] Background Color: N/A Outline Color: N/A Vertical Alignment: bottom Horizontal Alignment: center Right to Left: false Angle: 0 XOffset: 0 YOffset: 0 Size: 8 Font Family: Arial Font Style: normal Font Weight: normal Font Decoration: none
Description: Ambient monitoring measures the status of air quality throughout the state to assess trends, compliance with federal and state air quality standards, effectiveness of control strategies and attainment plans, health effects and environmental damage; respond to citizen complaints; evaluate specific geographic or hot-spot air quality concerns; and create environmental indicators. Emission inventory is the cataloging of sources of air pollution and the emissions from those sources. Inventory data are critical to the understanding of the causes of air pollution problems and creation of appropriate solutions. Meteorological forecasting and dispersion modeling of air pollutants are essential to understanding the movement and buildup of air pollution; the carrying capacity of airsheds; the interaction of pollutants; and the location of maximum impact of sources of pollution. As of September 26, 2005 there are no longer any areas of Washington designated as "NONATTAINMENT."
Service Item Id: b1ffb4006a034dcb983d3f691c69f5c8
Copyright Text: Washington State Department of Ecology
Description: Ambient monitoring measures the status of air quality throughout the state to assess trends, compliance with federal and state air quality standards, effectiveness of control strategies and attainment plans, health effects and environmental damage; respond to citizen complaints; evaluate specific geographic or hot-spot air quality concerns; and create environmental indicators. Emission inventory is the cataloging of sources of air pollution and the emissions from those sources. Inventory data are critical to the understanding of the causes of air pollution problems and creation of appropriate solutions. Meteorological forecasting and dispersion modeling of air pollutants are essential to understanding the movement and buildup of air pollution; the carrying capacity of airsheds; the interaction of pollutants; and the location of maximum impact of sources of pollution. As of September 26, 2005 there are no longer any areas of Washington designated as "NONATTAINMENT."
Service Item Id: b1ffb4006a034dcb983d3f691c69f5c8
Copyright Text: Washington State Department of Ecology
Color: [0, 0, 0, 255] Background Color: N/A Outline Color: N/A Vertical Alignment: bottom Horizontal Alignment: center Right to Left: false Angle: 0 XOffset: 0 YOffset: 0 Size: 8 Font Family: Arial Font Style: normal Font Weight: normal Font Decoration: none
Description: Ambient monitoring measures the status of air quality throughout the state to assess trends, compliance with federal and state air quality standards, effectiveness of control strategies and attainment plans, health effects and environmental damage; respond to citizen complaints; evaluate specific geographic or hot-spot air quality concerns; and create environmental indicators. Emission inventory is the cataloging of sources of air pollution and the emissions from those sources. Inventory data are critical to the understanding of the causes of air pollution problems and creation of appropriate solutions. Meteorological forecasting and dispersion modeling of air pollutants are essential to understanding the movement and buildup of air pollution; the carrying capacity of airsheds; the interaction of pollutants; and the location of maximum impact of sources of pollution. As of September 26, 2005 there are no longer any areas of Washington designated as "NONATTAINMENT."
Copyright Text: Washington State Department of Ecology
Color: [0, 0, 0, 255] Background Color: N/A Outline Color: N/A Vertical Alignment: bottom Horizontal Alignment: center Right to Left: false Angle: 0 XOffset: 0 YOffset: 0 Size: 8 Font Family: Arial Font Style: normal Font Weight: normal Font Decoration: none
Description: Areas of the state where people who are vulnerable to health, social, and environmental inequities are also highly impacted by criteria air pollution.Using multiple sources of air quality data and environmental justice information, Ecology identified 16 areas of the state containing multiple overburdened communities, neighborhoods, and towns that are highly impacted by criteria air pollution. The places are a mix of urban, suburban, and rural. They vary greatly in population, from about 1,500 to more than 200,000 people. They also range vastly in area, from less than 3 square miles to 173 square miles. Collectively, they represent more than 1.2 million people, or about 15.5% of Washington’s population. We heard from Tribes, the public, members of the Environmental Justice Council, and other environmental justice advocates about identifying the people and places in Washington that are overburdened and highly impacted by criteria air pollution. We have not yet included any communities on Tribal land. More information about how communities were identified can be found on our website: ecology.wa.gov/overburdenedDISCLAIMER: This is not a diagnostic tool. These are communities identified for a specific purpose under the Climate Commitment Act.
Description: This map/layer displays geographic boundaries of areas that, at some point in the past, had failed to attain one of the National Ambient Air Quality Standards (NAAQS). EPA designates these areas as “nonattainment areas.” Once the nonattainment area improves air quality and resolves the violation of the NAAQS, the area’s status changes to “maintenance.” In nontattainment areas, special air quality permitting requirements apply (eg. Nonattainment New Source Review.) Maintenance areas have additional planning and transportation conformity requirements for a minimum of 20 years after attaining the standard. Nonattainment and maintenance areas are eligible for additional funding to mitigate transportation emissions.
Service Item Id: b1ffb4006a034dcb983d3f691c69f5c8
Copyright Text: Washington State Department of Ecology