This interim final rule amends the Occupational Safety and Health Administration (OSHA) standards for occupational health and environmental controls in subpart D of 29 CFR part 1926 by adding a new 1926.62 containing employee protection requirements for construction workers exposed to lead. This standard reduces the permitted level of exposure to lead for construction workers from 200 micrograms per cubic meter of air (200 ug/m(3)) as an 8-hour time weighted average (TWA) to an 8-hour TWA of 50 ug/m(3). The standard also includes requirements addressing exposure assessment, methods of compliance, respiratory protection, protective clothing and equipment, hygiene facilities and practices, medical surveillance, medical removal protection, employee information and training, signs, recordkeeping, and observation of monitoring. An action level of 30 ug/m(3) as an 8-hour TWA is established as the level at which employers must initiate certain compliance activities. In instances where employers can demonstrate that employee exposures are below 30 ug/m(3) as an 8-hour TWA, the employer is not obligated to comply with most of the requirements in this interim final rule. This interim final rule is mandated by, and issued under the exclusive authority of, title X, subtitle C, sections 1031 and 1032, Worker Protection, of the Housing and Community Development Act of 1992. DATES: This interim final standard shall become effective June 3, 1993. Start-up dates for various provisions are set forth paragraph (r) of the standard (1926.62(r)). THE FULL TEXT OF THE STANDARD CAN BE FOUND IN THE OSHA STANDARDS DATABASE, WHICH IS AVAILABLE THROUGH THE MAIN OCIS MENU. THE PREAMBLE FOR THIS RULING IS AVAILABLE ON THE OSHA CD-ROM.