Science & Technology
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حالات الطوارئ الإشعاعية
How to protect yourself from radiation, in Arabic.
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방사선으로부터 자신을 보호하기
How to protect yourself from radiation, in Korean.
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保護自己不受輻射傷害
How to protect yourself from radiation, in Chinese Traditional.
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保护自己免受辐射
How to protect yourself from radiation, in Chinese Simplified
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GHGRP 2021: Power Plants
Overview and data highlights of 2021 power plant emissions of greenhouse gases in EPA's Greenhouse Gas Reporting Program.
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GHGRP 2022: Power Plants
Overview and data highlights of 2022 power plant emissions of greenhouse gases in EPA's Greenhouse Gas Reporting Program.
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High Performance Computing: The Computational Resources behind the Agency’s Environmental Modeling and Visualization
Introductory information about high performance computing services at the EPA.
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Community-LINE Source Model (C-LINE) to estimate roadway emissions
C-LINE is a web-based model that estimates emissions and dispersion of toxic air pollutants for roadways in the U.S. This reduced-form air quality model examines what-if scenarios for changes in emissions such as traffic volume fleet mix and vehicle speed.
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Lifecycle Greenhouse Gas Results
This page presents the results of lifecycle GHG performance of a variety of renewable fuel stocks.
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AQS Webinars
AQS Webinars
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AQS Guidelines for Reporting Collocated PM2.5 and Lead Data
AQS Guidelines for Reporting Collocated PM2.5 and Lead Data
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NAAM Conference 2016
NAAM Conference 2016
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How do I close a QA Collocated monitor?
First, users need to understand there are several business rules that dictate the process for closing out a QA collocated monitor and setting one up. We will walk through the process below using an example. Scenario: The user has a site with three monitors, we'll call them POC1, POC2 and…
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How do I allow a user to load QA data?
Example: Kathy needs to be granted permission to upload QA data as an EPA contractor for the following screening groups; can you please grant her access? Also, she will be posting lead (Pb) data for the R9 lab; I am not sure what screening group allows for that. Can you…
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How does AQS determine if a monitor is regulatory or not?
The key field in AQS to tell if something is a regulatory monitor or not, is the monitor type; so if the monitor type is a SLAMS then the monitor is assumed to be regulatory. If the monitor is not a regulatory monitor and its a State, Local or Tribe…
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After an agency adds certification request flags, is the agency allowed to make changes to that year's raw data record(s)?
If an agency has entered certification flags and they change any of the raw data it will reset the flag to an "M" flag. This is whether or not they have submitted a certification letter to EPA. An "M" flag basically signifies that something has changed since the agency has…
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Do you have to recertify data if it is null coded after you have certified the data?
If you replace a sample measurement number with a null code, then AQS will reset the certification flag to "M". Alternatively, if you have a date-time where there is no raw data value and submit a null code for that date-time then AQS should not change the flag.
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What is the difference between Agency and Screening Group?
Historically, AQS used an abstraction called "Screening Groups" for security access control - i.e. who was allowed to modify data in AQS. Under this model, Monitors were owned by Screening Groups and users were assigned to screening groups based on which monitors they needed to access. This security model has…
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When exactly does it matter what information has been added to the Maintain -> Site -> Primary Monitor Periods screen?
First, for PM 2.5 , Ozone, Lead and PM 10 the regulations require a monitor for those parameters to be designated as the "Primary" at every site where a monitor for the parameter is located. Right now the first monitor that the user creates for the parameter will automatically become…
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How do I delete a lot of Tribal data?
Log in to AQS, click on "Action" from the menu and from the drop-down click on "Tribal Mode On" From the menu choose "Retrieval" and from the drop-down lick on "Standard Report Selection" For the "Report Code" field, from the drop-down, choose "AMP501 - Extract Raw Data" Report At the…