The EPA is implementing a project under the Project XL program for the OSi Specialties, Inc. plant, a wholly owned subsidiary of Witco Corporation, located near Sistersville, West Virginia (the ``Sistersville Plant''). The terms of the XL project are defined in a Final Project Agreement (``FPA''). Following public review and comment, the FPA was signed by delegates from the EPA, the West Virginia Division of Environmental Protection (``WVDEP''), and Witco Corporation on October 17, 1997. The EPA published a final rule, applicable only to the Sistersville Plant, on September 15, 1998 (See 63 FR 49384). That action was a site-specific regulatory deferral from the Resource Conservation and Recovery Act (``RCRA'') organic air emission standards, commonly known as RCRA Subpart CC. The EPA expects this XL project to result in superior environmental performance at the Sistersville Plant, while deferring significant capital expenditures, and thus providing cost savings for the Sistersville Plant. Since publication of the final rule on September 15, 1998, it has come to the EPA's attention that the Federal Register notice contained a typographical error in the regulatory language that could result in some confusion regarding the time allowed for an owner or operator to conduct a performance test. Today's action makes the technical corrections to that published regulatory text.