Purpose. The purpose of the regulations in this part is to implement section 502(b)(1) of the Rehabilitation Act of 1973, Pub. L. 93-112, 29 U.S.C. § 792, as amended by the Rehabilitation, Comprehensive Services, and Developmental Disabilities Amendments of 1978, Pub. L. 95-602, section 118, 92 Stat. 2979, by establishing rules of procedure for public hearings which ensure compliance with standards issued under the Architectural Barriers Act of 1968, Pub. L. 90-480, as amended, 42 U.S.C. § 4151 et seq. (including standards of the U.S. Postal Service).