For the purpose of providing for payment of the principal, premium (if any), and interest on the Bonds, and to accomplish the objectives of this chapter, there is hereby irrevocably pledged to those purposes, and hereby appropriated, such amount as may be necessary therefor from the following sources:

(a) The residue of the receipts from the excise tax ("the utility gross receipts tax") levied by Title 40, Chapter 21, Article 3, as amended ("Article 3"), remaining after payment of the expenses of administration and enforcement of Article 3, being that portion of the tax that is required by Article 3 to be deposited in the State Treasury to the credit of the Trust Fund, after there shall have been taken from the residue the amount necessary to pay at their respective maturities the principal of and interest on those bonds issued by the Authority under the 1965 Act, the 1971 Acts, the 1973 Act, the 1978 Act, the 1985 Act, the 1990 Act, the 1995 Act, the 1998 Act, the 1999 Act, the 2001 Act, the 2002 Act, the 2003 Act, the 2007 Act, or this Act that may be outstanding at the time of the delivery of the respective series of the Bonds authorized herein;

(b) The residue of the receipts from the excise tax ("the utility service use tax") levied by Title 40, Chapter 21, Article 4, ("Article 4"), remaining after payment of the expenses of administration and enforcement of Article 4, being that portion of the tax that is required by Article 4 to be deposited in the State Treasury to the credit of the Trust Fund, after there shall have been taken from the residue the amount necessary to pay at their respective maturities the principal of and interest on those bonds issued by the Authority under the 1965 Act, the 1971 Acts, the 1973 Act, the 1978 Act, the 1985 Act, the 1990 Act, the 1995 Act, the 1998 Act, the 1999 Act, the 2001 Act, the 2002 Act, the 2003 Act, the 2007 Act, or this Act that may be outstanding at the time of the delivery of the respective series of the Bonds authorized herein;

(c) To the extent and to the extent only that the revenues appropriated in the foregoing subsections (a) and (b) of this Section may not be sufficient to pay at their respective maturities the principal of, premium, if any, and interest on the Bonds, the residue of the receipts from the excise tax ("the sales tax") levied by Title 40, Chapter 23, Article 1, Division 1, as amended ("Article 1"), after there shall have been taken from the residue the amounts appropriated for other educational purposes in Section 40-23-35, (which residue constitutes that portion of the receipts from the sales tax that is now required by law to be paid into the Trust Fund), and after there shall have been taken from the residue amounts sufficient to meet all prior charges on the residue including such amounts as may be necessary to pay at their respective maturities the principal of and interest on those bonds issued by the Authority under the 1965 Act, the 1971 Acts, the 1973 Act, the 1978 Act, the 1985 Act, the 1990 Act, the 1995 Act, the 1998 Act, the 1999 Act, the 2001 Act, the 2002 Act, the 2003 Act, the 2007 Act, or this Act that may be outstanding at the time of the delivery of the respective series of the Bonds authorized herein; and

(d) To the extent and to the extent only that the revenues appropriated in the foregoing subsections (a), (b), and (c) of this Section may not be sufficient to pay at their respective maturities the principal of, premium, if any, and the interest on the Bonds, the residue of the receipts from the excise tax ("the use tax") levied by Title 40, Chapter 23, Article 2, as amended ("Article 2"), after there shall have been taken from the residue the amount necessary to meet the expenses of the State Department of Revenue in collecting the use tax (which residue constitutes that portion of the receipts from the use tax that is now required by law to be paid into the Trust Fund), and after there shall have been taken from the residue such amounts as may be necessary to meet all prior charges on the use tax including the amounts sufficient to pay at their respective maturities the principal of and interest on those outstanding bonds referred to in subsection (c) of this Section.

All monies hereby appropriated and pledged shall constitute a sinking fund for the purpose of paying the principal of, premium, if any, and interest on the Bonds. The State Treasurer is authorized and directed to pay at their respective maturities the principal of, premium, if any, and interest on the Bonds out of this fund and out of the residues of the tax receipts herein appropriated and pledged for the benefit of the Bonds, and is further authorized and directed to set up and maintain appropriate records pertaining thereto.