Learn the Issues
-
Air Modeling - Meteorological Grid Models
For air quality modeling purposes, meteorological grid models are used in conjunction with chemical interaction models to provide gridded output of chemical species or pollutant data.
-
CSAPR Compliance Year 2023 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2023 compliance year.
-
Air Quality Model Clearinghouse
The Model Clearinghouse is a focal point for interpretation of modeling guidance in specific regulatory applications.
-
How's My Waterway January 2023 Webcast
Learn about the new features of How's My Waterway.
-
Analysis of the Proposed Supplemental Interstate Transport Rule
IPM analyses of the Proposed Supplemental Interstate Transport Rule
-
Ozone Layer Research and Technical Resources
Access information on research and technical resources related to ozone layer science. This page provides links to research efforts led by organizations such as the National Oceanic and Atmospheric Administration, the United Nations Environment Program, an
-
Tools for CI Facilities
WaterSense has a variety of tools to help commercial building facility staff to improve water use efficiency.
-
Newsletter: East Palestine Train Derailment Response, 10-3-2023
Newsletter May 16 for East Palestien Train Derailment Response
-
International Actions to Protect the Ozone Layer
This page describes the Montreal Protocol on Substances that Deplete the Ozone Layer and provides links to learn more about international actions to protect the ozone layer.
-
Regulating Ozone-Depleting Substances Under the Clean Air Act
This page describes the regulation of ozone under the the Clean Air Act and provides links to learn more about the act and other, related programs.
-
About Air Monitoring
Air monitoring process for the East Palestine, Ohio train derailment.
-
Newsletter: East Palestine Train Derailment Response, 10-31-2024
Newsletter, Oct. 31, 2024 for East Palestine Train Derailment Response
-
EPA Collaborations with Stakeholders to Protect the Ozone Layer
Access information on EPA's efforts to address ozone layer depletion through collaborations with other stakeholders, including federal government agencies and international treaties and initiatives.
-
Newsletter: East Palestine Train Derailment Response, 3-21-2023
East Palestine Newsletter, 1st edition, serving East Palestine, Negley, Darlington and surrounding communities
-
How is waste leaving the derailment site tracked?
EPA on-scene coordinators are assigned to track liquid–and solid–waste trucks entering and leaving the derailment site. They log every truck, oversee the loading and covering of waste, truck washing and weighing, and the proper placement of placards. Responders take pictures throughout the process. All trucks go to approved and regulated…
-
What is the East Palestine Potable Water Sampling Work Plan?
In February, EPA required Norfolk Southern to investigate drinking water sources through a work plan approved by responding agencies. The work plan is being used to monitor drinking water near the derailment site, and recently changed to include more areas for water sampling. These new areas were chosen based on…
-
Can I grow a garden at home and eat the produce?
Yes. You can continue to use your yard as you normally would. Residential soil sampling results are within typical ranges for the area, and garden plants are generally considered safe to eat. Follow normal measures like peeling carrots and root vegetables and washing leafy greens.
-
Is the air monitoring equipment detecting chemicals of concern?
Yes, the air monitoring and sampling equipment are capable of detecting many chemicals of concern in the community and currently detections are below levels of concern. Some of the monitoring equipment may not detect a portion of the chemicals at lower levels–specifically n-butyl acrylate. However, there are independent tools used…
-
What are preliminary data and how are they different from validated results?
Preliminary data are the initial results received from samples sent to the laboratory. The general findings from this data may be used before validation if there is an immediate health or environmental threat. Data validation is the formal process by which experienced chemists assess the quality of the preliminary data…
-
What’s the difference between air sampling and air monitoring?
Air monitoring and air sampling are two different methods of looking at air quality. Air monitoring uses electronic devices to provide real-time readings of contaminants in the air. Air sampling involves trapping air over a period of time in a container that is then sent to a laboratory for analysis…