For the purposes of sections 10a-25a to 10a-25g, inclusive, “state moneys” means the proceeds of the sale of bonds authorized pursuant to said sections or of temporary notes issued in anticipation of the moneys to be derived from the sale of such bonds. Each request filed as provided in subsection (b) of section 10a-25c for an authorization of bonds shall identify the project for which the proceeds of the sale of such bonds are to be used and expended and, in addition to any terms and conditions required pursuant to said subsection (b) of section 10a-25c, shall include the recommendation of the person signing such request as to the extent to which federal, private or other moneys then available or thereafter to be made available for costs in connection with any such project should be added to the state moneys available or becoming available hereunder for such project. If the request includes a recommendation that some amount of such federal, private or other moneys should be added to such state moneys, then, if and to the extent directed by the State Bond Commission at the time of authorization of such bonds, the amount of such federal, private or other moneys then available or thereafter to be made available for costs in connection with such project may be added to any state moneys available or becoming available hereunder for such project and be used for such project. Any other federal, private or other moneys then available or thereafter to be made available for costs in connection with such project upon receipt shall, in conformity with applicable federal and state law, be used by the Treasurer to meet principal of outstanding bonds issued pursuant to sections 10a-25a to 10a-25g, inclusive, or to meet the principal of temporary notes issued in anticipation of the money to be derived from the sale of bonds theretofore authorized pursuant to said sections for the purpose of financing such costs, either by purchase or redemption and cancellation of such bonds or notes or by payment thereof at maturity. Whenever any of the federal, private or other moneys so received with respect to such project are used to meet principal of such temporary notes or whenever principal of any such temporary notes is retired by application of revenue receipts of the state, the amount of bonds theretofore authorized in anticipation of which such temporary notes were issued and the aggregate amount of bonds which may be authorized pursuant to section 10a-25b shall each be reduced by the amount of the principal so met or retired. Pending use of the federal, private or other moneys so received to meet principal as hereinabove directed, the amount thereof may be invested by the Treasurer in bonds or obligations of, or guaranteed by, the state or the United States or agencies or instrumentalities of the United States, and shall be deemed to be part of the debt retirement funds of the state, and net earnings on such investments shall be used in the same manner as the said moneys so invested.