SO₂: 281 ton (12 month rolling average)
         2.2 lb/ton (3 h rolling average)
The above emission limits are the subject of a Consent Decree which must be met by March 1, 2011

Date Modified

3745-77

August 21, 1997

-

September 8, 2010 - Gas leak at DuPont plant closes Ohio park, officials say no danger to people in area.  Fire officials say a gas leak at a DuPont plant just outside Cincinnati has caused an evacuation at a county park and golf course.  Miami Township Fire Chief Steve Ober said Wednesday that monitors show the leak of a gas containing oleum was contained to the DuPont property. He says there is no danger to people in the area. He says officials believe little gas was released.  Shawnee Lookout Park and its golf course were evacuated at about 2 p.m. as a precaution.  Ober says oleum is a fuming sulfuric acid and that the company is handling cleanup.  He says no injuries were reported and all non-essential DuPont employees were sent home.

June 25, 2003 - U.S. Environmental Protection Agency Region 5 has cited DuPont Corp. for alleged violations of federal and state clean-air regulations at the company’s Fort Hill sulfuric acid plant, 11215 Brower Road, North Bend, Ohio.  EPA alleges DuPont modified its facility, causing an increase in sulfur dioxide emissions, without meeting federal new source performance standards for sulfuric acid plants or getting a permit to prevent significant deterioration of air quality. Before existing air-pollutant sources can be modified in areas that comply with all national outdoor air-quality standards, companies must get permits that restrict their emissions.  Other alleged violations include failure to use best available technology to control sulfur dioxide emissions, failure to give permitting authorities all relevant information and failure to get installation and operating permits.  These are preliminary findings of violations. To resolve them, EPA may issue a compliance order, assess an administrative penalty or bring suit against the company. DuPont has 30 days from receipt of the notice to request a meeting with EPA to discuss the allegations and how to resolve them.  “EPA’s mission is to protect public health and the environment,” said Region 5 Administrator Thomas V. Skinner. “We will take whatever steps are needed to ensure compliance with the Clean Air Act.”  Exposure to sulfur dioxide can impair breathing, aggravate existing respiratory diseases like bronchitis and reduce the ability of the lungs to clear foreign particles. Sulfur dioxide can also cause acid rain. Children, the elderly and people with existing heart and lung conditions are the most sensitive.