At such time as all obligations under the project agreements respecting any particular project have been satisfied or otherwise discharged or adequately provided for and all the bonds issued to finance such project have been repaid or payment thereof has been adequately provided for, and all other obligations of the authority of any nature whatsoever with respect to such project have been satisfied or otherwise discharged or adequately provided for, the authority is authorized to execute such deeds and conveyances as may be necessary to convey the funds and property provided by the project agreements to be conveyed to the company and shall deliver and pay over to the public agency any remaining funds and properties of the authority which were derived from or are attributable to such project.