Denka Asks Court To Reject EPA IRIS Value As ‘Bright-Line’ Air Toxics Limit

Denka Performance Elastomer (DPE) is raising new counterclaims in its challenge to EPA’s novel enforcement action over emissions from its Louisiana facility, asking a federal court to reject the agency’s first-time effort to use an Integrated Risk Information System (IRIS) value as an air toxics limit because officials have never before used such a value as a “bright-line standard.” DPE makes the argument in an Oct. 25 “amended counterclaim” in its opposition to EPA’s Clean Air Act section 303 emergency...