COLUMBUS, Ohio, May 7, 2002 - American Electric Power (NYSE: AEP), the United States Environmental Protection Agency (U.S. EPA) and the Ohio Environmental Protection Agency (OEPA) have agreed on the comprehensive testing, monitoring and reporting schedule the company will employ to evaluate the effectiveness of the company´s program to reduce sulfur aerosol emissions from the Gen. James M. Gavin power plant in southeastern Ohio.

"We are entering into a voluntary cooperative agreement with U.S. EPA and OEPA that provides for extensive monitoring of ambient air quality and frequent testing of stack emissions at Gavin during the operation of the Unit 2 SCR beginning next month and continuing through the summer," said Dale E. Heydlauff, AEP´s senior vice president of environmental affairs. ”This agreement allows us to collect and share information on a timely basis as we deploy the full-scale mitigation systems and demonstrate their successful operation."

Heydlauff confirmed that the recently announced acquisition of land in the community of Cheshire will not affect the company´s decision to move forward with the planned mitigation program. "It has always been our intention to fix the problem.” He also emphasized that at no time during the plant´s operation did measured air quality exceed any health-based standards or permissible exposure limits established by federal or state regulations. In fact, the emission levels were well below these limits. AEP plans to use the property to enhance the operations at the Gavin Plant.

The company and the agencies developed the agreement to address changes in the exhaust plume from the plant’s two 830-foot-high stacks. The same mechanism used in the SCR systems to reduce nitrogen oxides produced a small increase in the level of sulfur trioxide (SO3), which can appear as a bluish or brown haze under certain weather conditions.

Company officials have worked closely with federal and state environmental agencies to understand the cause of the phenomenon and develop a plan to mitigate it.

As announced earlier this year, the company will install three separate injection systems at a cost of approximately $7 million on Gavin’s Unit 2. The systems will inject water, magnesium hydroxide and calcium hydroxide at specific points along the combustion and emission control path to produce the chemical changes required to reduce the SO3 levels. The systems will be completed in May. Flue gases from Unit 1 will bypass its SCR system during the upcoming May-September ozone season.

Among other elements of the agreement:

  • AEP will perform mass particulate matter (PM) and sulfuric acid (H2SO4) stack testing on Unit No. 2 beginning two weeks after the SCR begins operations. The stack tests will be repeated three other times during SCR operations at Unit No. 2 during 2002.

  • AEP will collect ambient air samples for H2SO4 for a one-hour duration, four times per day, five days per week. The sampling will include a location where the plume is mostly likely to have the greatest impact - based on visual observation of the plume.

  • AEP will install and continuously operate and maintain an SO2 ambient air monitor at a site approved by USEPA and Ohio EPA. The company will operate the monitor at least through October 31, 2002.

  • AEP will assume responsibility for providing various data reports outlined in the agreement on weekly and/or semi-monthly schedules.

  • The company will be prepared to take additional short-term measures to mitigate SO3 emissions if at any time the data indicates that emissions from the Gavin units during SCR operations do not meet the standards applicable to the plant under the Clean Air Act and/or the approved Ohio State Implementation Plan (SIP).

Gavin is a two-unit, 2,600-megawatt power plant, capable of generating enough electricity to power 2.6 million average homes.

American Electric Power is a multinational energy company with a balanced portfolio of energy assets. AEP, the United States’ largest electricity generator, owns and operates more than 42,000 megawatts of generating capacity in the U.S. and select international markets. AEP is a leading wholesale energy marketer, ranking among North America’s top providers of wholesale power and natural gas with a growing wholesale presence in European markets. In addition to electricity generation, AEP owns and operates natural gas pipeline systems, natural gas storage, coal mines, and the fourth-largest inland barge company in the U.S. AEP is also one of the largest electric utilities in the United States, with almost 5 million customers linked to AEP’s wires. The company is based in Columbus, Ohio.

Pat D. Hemlepp
Director, Corporate Media Relations
American Electric Power

More From APCO

Take Charge

Save Money & Energy - Now & Later

Sign Up Now Pay Online for Free with Paperless Billing

Pay Online for Free with Paperless Billing

Learn more

Download our app

How We Restore Power Learn more

How We Restore Power

Visit AEP.com
Use of this site constitutes acceptance of the AEP Terms and Conditions. View our Privacy Policy. © 1996-2019 American Electric Power. All Rights Reserved.

Privacy Policy

Privacy Policy for Appalachian Power, a unit of American Electric Power (AEP)


This Privacy Policy applies only to AppalachianPower.com and the Appalachian Power customer mobile app (com.aep.customerapp.apco). Other AEP websites and apps may be governed by their own privacy policies, appropriate to the uses and needs of each. Throughout the site or app, we may provide links to resources and sites that are not part of AppalachianPower.com or the Appalachian Power customer mobile app. This Privacy Policy does not apply to those resources and sites.


By using this site or app, you consent to the terms of this Privacy Policy. Whenever you submit information via this site or app, you agree to the collection, use, and disclosure of that information in accordance with this Privacy Policy.

Information Collected

  1. Passively collected information

    During your use of this site or app, we may collect anonymous information about your visit here through the use of server logs, cookies, scripts, tracking pixels and other Web traffic tracking systems. This information is aggregated and used to improve user experience through analysis of user activities. This information is never combined with any of the personally identifiable information you may provide in your use of the features of this site or app.
  2. Personally identifiable information

    On certain forms of this site or app, you may be asked to provide information about yourself or your account with us, either to identify yourself to us or to request a service from us. In each case, we will inform you what information is provided at your option and what information is required to complete the transaction or activity you are engaged in. If you are unwilling to provide this required information, you will be unable to complete the requested transaction.

Use and disclosure of information

The information you provide to us will be used to respond to requests you may make for services. Some or all of this information may be added to your permanent account record and may be used for research purposes.

In addition, we may use elements of this information in the following situations:

  1. We may transfer the information to Appalachian Power’s affiliates and subsidiaries, unless such transfer is prohibited by law;
  2. We may transfer the information as part of a merger, consolidation, acquisition, divestiture or other corporate restructuring (including bankruptcy);
  3. We may make the information available to third parties who are providing the product, service or information that you have requested (but not your password);
  4. We may make such information available to third parties who are providing services to Appalachian Power (for example, providing the information to third parties performing computer-related services for Appalachian Power);
  5. We may use the information to communicate with you about products and services that may be of interest to you.
  6. We may disclose the information if we form a good-faith belief that disclosure of such information is necessary to investigate, prevent, or take action regarding any illegal activities or regarding interference with the operation of our site or violation of its terms of use; or
  7. We may disclose the information if we believe that disclosure is required by law or regulation or in response to a subpoena or other order of a court or other governmental agency.

Appalachian Power uses Flurry Analytics Service (provided by Yahoo) in order to improve its mobile apps. Flurry’s privacy policy governs the use of this information.

Also, Appalachian Power reserves the right to share any aggregated information (i.e., non-personally identifiable information) with any third parties for any reason, unless prohibited by law.

We will not sell, rent or otherwise disclose the information we gather about you or your account to any third party, except as outlined in this Privacy Policy.


Appalachian Power takes reasonable steps to protect your personally identifiable information as it is transferred to us, through the use of Web technologies such as the Secure Sockets Layer and others. However, no Internet transmission of information is ever completely secure or error-free. In particular, e-mail sent to or from Appalachian Power may not be secure.

How to Reach Us

If you would like to update your personally identifiable information or if you have questions about this privacy policy, please contact us.

Changes to This Policy

Appalachian Power reserves the right to change this Privacy Policy at any time. If this Privacy Policy changes, the revised policy will be posted to this site. Please review this Privacy Policy before you provide any personally identifiable information through this site. Use of our web site after the posting of a revised privacy policy constitutes your consent to the revised policy.

This policy was last revised on December 13, 2017.

Close ×

Sign Up For Alerts

Subscribing to APCO alerts gives you instant notification for:

  • Billing & Payments - avoid late payments and disconnection
  • Outage Updates - find out if there's an outage at your address and when power will be back on

Win an Xbox One with Alerts!

Enroll in alerts to be eligible to win. Subscribing to I&M alerts gives you instant notification for:

  • Billing & Payments - avoid late payments and disconnection
  • Outage Updates - find out if there's an outage at your address and when power will be back on

Loading video...