This chapter shall be liberally construed to effectuate the purposes hereof, and the foregoing sections of this chapter shall be deemed to provide an additional and alternative method of doing the things authorized thereby, and shall be regarded as supplemental and additional to powers conferred upon the City of Richmond by its Charter and upon the City of Richmond and Counties of Henrico and Chesterfield by other provisions of law; however, the issuance of revenue bonds or revenue refunding bonds under the provisions of this chapter need not comply with the requirements of any other law applicable to the issuance of bonds, and except as provided in this chapter none of the powers granted to the Authority under the provisions of this chapter shall be subject to the supervision or regulation or require the approval or consent of the City of Richmond or the Counties of Henrico or Chesterfield or any commission, board, bureau, official, or agency thereof or of the Commonwealth, except as otherwise provided in this chapter.