As a precautionary response to COVID-19, Ohio EPA is currently operating with most staff working remotely. If you are working with our staff on a current project and you know the name of the employee you are working with, email them at or call them directly. The Agency website has contact information for every district, division, and office. In order to reach us, please contact Ohio EPA’s main phone line at (614) 644-3020 or the main line for the division or office you are trying to reach.

After March 23, our district offices and Central Office will be temporarily closed and will have increasingly limited ability to receive deliveries, plans, etc. All entities are encouraged to submit plans, permit applications, etc., electronically where there are existing avenues to do so, such as the eBusiness Center (eBiz). Please refer to the list of available services on the main eBiz webpage. We encourage you to make use of all that apply, even if you have not used eBiz in the past. Plans under 25 MB can be emailed. For large plans over 25 MB, entities should work with the reviewer/division to upload via LiquidFiles. Directions for submitting docs via LiquidFiles is available on YouTube. We apologize for the inconvenience and thank you in advance for your understanding. If you wish to send hard copies of documents to any of Ohio EPA’s district offices, the best method to ensure we receive these documents is to send them via U.S. Mail. Since all offices are closed, deliveries outside of U.S. Mail (FedEx, UPS) will likely be returned because the offices are closed and deliveries cannot be made.

To report a spill or environmental emergency, contact the spill hotline (800) 282-9378 or (614) 224-0946

Air Monitoring

The goals of the Air Monitoring Program are: to determine compliance with the ambient air quality standards; provide real-time monitoring of air quality; provide data for trend analyses, regulation evaluation and planning; and provide daily information to the public concerning the quality of the air in high-population areas, near major emission sources and in rural areas. For more detail about what we do, please explore the options below.

If you would like to receive e-mail notifications regarding opportunities to provide comment regarding important changes to Ohio’s air monitoring network, please go to Ohio EPA's Customer Support Center, log-in or sign-up to create a new account, and choose "Information on Ohio's Air Monitoring Program" from your subscriptions.

Availability of Draft for Comment – Draft Letter Request for Discontinuation of SO2 Monitoring Sites in Steubenville, OH-WV Area
July 21, 2020: Ohio EPA is requesting that USEPA approve a change to Ohio’s air monitoring program in the Steubenville, OH-WV area. Specifically, Ohio EPA is requesting to discontinue the Cardinal Power Plant monitors due to the consistently low SO2 values over the last five years: Cardinal Brilliant (39-081-0018), Self Storage (39-081-0020) and Trailer Sales (54-009-6000). Ohio EPA will continue to exceed the minimum SO2 monitoring requirements upon discontinuation of these monitors and continue to provide an appropriate and adequate network for monitoring ongoing maintenance in the Steubenville, OH-WV maintenance area. Additional details can be found in the draft request.

Ohio EPA will accept comments on this draft request through Monday, August 24, 2020. Please submit your comments via email to or by mail to:

Mailing address:  Holly Kaloz
                            Ohio Environmental Protection Agency, DAPC
                            Lazarus Government Center
                            P.O. Box 1049
                            Columbus, Ohio 43216-1049
Phone:     (614) 644-3632


Air Monitoring Network Plans (AMNP)

Currently Effective Annual AMNP

Prior Annual AMNPs

Five Year Network Assessment

For questions and comments about the Ohio Air Monitoring Network, please contact:

AirOhio provides near real-time air quality reporting of the monitoring network that is operated and maintained by Ohio EPA and Local Air Agencies working under contract with Ohio EPA. Air quality information is automatically retrieved from air monitors throughout the state and displayed in various reports.

For more information, please visit AirOhio.

Air Toxics

On Aug. 3, 2006, an amendment of Ohio Revised Code (ORC) 3704.03(F) became effective as a result of Senate Bill 265 of the 126th General Assembly. The amended statute identifies the requirements for reviewing new and modified air contaminant sources with air toxic emissions. Prior to this, Ohio EPA had an "Air Toxics Policy" often referred to as "Option A." The amended statute incorporated the use of Option A into law and also required Ohio EPA to promulgate a list of toxic air contaminants that would fall under this review requirement. On Dec. 1, 2006, Ohio EPA's list of toxic air contaminants became effective in Ohio Administrative Code (OAC) 3745-114-01. Ohio EPA recommended 303 compounds for the toxic air contaminant list based on a review of scientific evidence available. Below you will find information regarding air toxics in general and Ohio EPA's regulation of air toxics.

For more information, please visit the Air Toxics website.

Air Monitoring Quality Assurance, Data and Reports

Quality Assurance

Ohio EPA Central Office, District Offices and Local Air Agencies all participate in Ohio’s quality assurance program to ensure Ohio is acquiring and distributing quality ambient air monitoring data. Ohio’s quality assurance program conforms to the requirements of 40 CFR Part 58, Appendix A and B and is the means by which Ohio manages the quality of the monitoring information it produces in a systematic, organized manner. It provides a framework for planning, implementing, assessing and reporting work performed by Ohio EPA and our partners and for carrying out required quality assurance and quality control activities. While monitoring organizations themselves perform a variety of quality assurance activities to ensure quality data is being routinely collected, Ohio also has quality assurance auditors that conduct independent quality assurance evaluations for ambient monitoring network activities.


Annual Air Quality Report

Air Quality Trends Report

Air Quality trends in Ohio for the past 30 years, the ambient data in terms of the National Ambient Air Quality Standards and also a file with the Air Quality Index as well as an explanatory document with a summary of the trends.

  • 30 Year Trends Report [ZIP] : Consists of three files: AQI Trends 2010.xls, Trends 30 yr 10.doc, and Trnds 30.xls


Special Sampling Projects

Air Monitoring Contacts

Contacts Questions Regarding... Phone Number
Downey, Phil Monitoring (Ambient), Toxics Monitoring (614) 644-3624
Fetty Davis, Erica Air Monitoring Annual Air Quality Report, Air Monitoring Annual Network Plan (614) 644-2310
Fontaine, Charles Ambient Air Quality Monitoring (Quality Assurance) (614 644-2187
Foster, Ben Ambient Air Quality Monitoring (Biowatch) (614 644-3061
Kaloz, Holly Air Quality Modeling, Air Monitoring Exceptional Events (614) 644-3632
Kenny, William AQE&P Supervisor of Air Monitoring Data Management and Inventory, Air Monitoring Data Analysis (614) 644-2039
Koval, Paul Supervisor Central Office Air Monitoring, Air Lab and Air Toxics, Air Toxics / Toxicology, Hazardous Air Pollutants (Health), Ambient Air Quality Monitoring, (614) 644-3615
Marusek, Bryon Manager Air Monitoring Network Operations and Toxics, Ambient Air Quality Monitoring, Toxics Monitoring, Remote Ambient Data System, Ambient Air Monitoring and Advanced Monitoring Systems; RADS and related OMS and EMPACT Initiatives; Air Lab Facilities Management and Safety (614) 644-4837
Riggleman, Mike Air Monitoring Network Quality Assurance Manager, Ambient Air Quality Monitoring (Quality Assurance, Biowatch)    (614) 644-3590
Thomason, Krista Ambient Air Monitoring Data Processing (AQS) (614) 644-3620


Air Monitoring Lab Contacts

Contacts Questions Regarding... Phone Number

Mike Rath

Carbon Monoxide Monitoring and Support Instrumentation; Data Loggers; Meteorological Instrumentation; Ambient Data Acquisition Systems; Hi-Vols; Remote Ambient Data System

(614) 836-8790

Jim Prettyman

Sulfur Dioxide Monitoring and Support Instrumentation; Air Quality Site Monitoring Operations; Technician

(614) 836-8791

Thang Vu

Ozone Monitoring and Support Instrumentation; Air Quality Site Monitoring Operations; Technician

(614) 836-8789

Air Lab Fax


(614) 836-8810



Air Quality Partners