Science & Technology
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Do you have outdoor air monitoring data for all counties in the U.S.?
No, approximately 1,000 out of the roughly 3,000 U.S. counties have monitoring data. Return to Frequent Questions about AirData
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Do I need to request permission to use the monitoring data and graphics from the AirData website in my research or publication?
The ambient monitoring data in EPA’s Air Quality System (AQS) are public domain. You are welcome to download the data and use freely, without submitting a request. Return to Frequent Questions about AirData
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How do I cite data and graphics obtained from the AirData website?
Please use the following citation: US Environmental Protection Agency. Air Quality System Data Mart [internet database] available via https://www.epa.gov/outdoor-air-quality-data. Accessed Month DD, YYYY. Return to Frequent Questions about AirData
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What is the best way to access outdoor air monitoring data?
By Data Type – it depends on what you need. Current and forecast data and maps AirNow.gov Daily summaries of recent and historical data Historical - Pre-generated files of Daily Summary Data Recent and Historical - AirData Air Quality Index (AQI)-related reports and visualizations Annual summaries Pre-generated files of Annual…
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Frequent Questions about AirData
outdoor air quality data faqs
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Assessment of PM2.5 FEMs Compared to Collocated FRMs
This memorandum describes a one-page technical report that assesses the comparability of a PM2.5 continuous monitor when collocated with an FRM sampler.
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Ambient Air Toxics Trends Tool
This application is an expansion of the Air Trends Report displaying the annual ambient air toxics monitoring trends.
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Meetings & Events about Anacostia Watershed (Washington, DC/Maryland)
Anacostia Watershed (Washington, DC/Maryland) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.
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New Life for the Anacostia River Watershed
Urban Waters Federal Partnership: Anacostia River Background Information Factsheet
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Big River Clean-Up and Restoration Effort (Missouri)
Big River Clean-up and Restoration Effort landing page
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Accomplishments of South Platte Watershed
Accomplishments of the South Platte Watershed of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.
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Circular Economy Implementation Plan Online Platform
National Recycling Strategy Implementation Plan
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Reclaiming the Mystic River Watershed
This document has general information about initiatives, programs and plans for the Mystic River Watershed urban waters partnership location.
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Webinar Presentation - Final Exceptional Events Rule Revisions and Final Wildfire/Ozone Implementation Guidance
Slides for 9/21/2016 webinar titled Final Exceptional Events Rule Revisions and Final Wildfire/Ozone Implementation Guidance
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Exceptional Events Documents Ozone - Rhode Island
Exceptional Events Documents Ozone - Rhode Island
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Overview of State User Roles in the Exceptional Events Submission and Tracking System
There are two state roles in the Exceptional Events Submission and Tracking System: 1) Certifier and 2) Preparer. This document is an aide for both roles.
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Registering as a Preparer/Certifier for Exceptional Events
This job aide includes information on how to register as a Preparer or Certifier for the Exceptional Events Submission and Tracking System.
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How to Submit Exceptional Events Processes and Mitigation Plans
This job aide explains how to create, prepare, and submit exceptional events process and mitigation plan forms to EPA.
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Exceptional Events Submission and Tracking System Job Aides
Reference guides to assist state agencies with submitting and tracking exceptional events.
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Market Characterizations
market characterizations for 5 AIM Act applications