The EPA today is granting a petition submitted by McDonnell Douglas Corporation (McDonnell Douglas) of Tulsa, Oklahoma, to exclude from hazardous waste control (or delist) certain solid wastes generated at its U.S. Air Force Plant No. 3 facility. This action responds to McDonnell Douglas' petition to delist these wastes under those regulations that allow any person to petition the Administrator to modify or revoke any provision of certain hazardous waste regulations of the Code of Federal Regulations, and specifically provide generators the opportunity to petition the Administrator to exclude a waste on a ``generator-specific'' basis from the hazardous waste lists. After careful analysis, EPA has concluded that the petitioned waste is not hazardous waste when disposed of in Subtitle D landfills. This exclusion applies only to stabilized wastewater treatment sludge. The sludges were previously generated from the chemical conversion coating of aluminum operations at McDonnell Douglas' Tulsa, Oklahoma facility. The sludges were disposed of in surface impoundments which were then closed as a single Resource Conservation and Recovery Act (RCRA) landfill. The facility plans to excavate the waste from the city airport site and dispose of it offsite in a Subtitle D landfill. Accordingly, this final rule excludes the petitioned waste from the requirements of hazardous waste regulations under RCRA when disposed of in Subtitle D landfills.