The Environmental Protection Agency (EPA) is granting a petition submitted by Occidental Chemical Inc. (Occidental) to exclude from hazardous waste control (or delist) a certain solid waste. This action responds to the petition originally submitted by Occidental Chemical to delist the Rockbox Residue on a ``generator specific'' basis from the lists of hazardous waste. The EPA received a notice from Oxy Vinyls, LP regarding a change in ownership. Effective May 1, 1999, Oxy Vinyls, LP became the owner of Occidental Chemical Corporation, Houston Chemical Complex, VCM Site. Oxy Vinyls has advised the Agency that it wishes to proceed with the petition for delisting submitted by Occidental Chemical. We have changed the references to Occidental Chemical in the conditions of the delisting to Oxy Vinyls. After careful analysis, the EPA has concluded that the petitioned waste is not hazardous waste when disposed of in Subtitle D landfills/ surface impoundments. This exclusion applies to Rockbox Residue generated at Oxy Vinyl's Deer Park, Texas facility. Accordingly, this final rule excludes the petitioned waste from the requirements of hazardous waste regulations under the Resource Conservation and Recovery Act (RCRA) when disposed of in Subtitle D landfills/surface impoundments but imposes testing conditions to ensure that the future- generated wastes remain qualified for delisting.