Notwithstanding anything contained in this chapter, the proceeds received from the sale of debentures and any revenues received by the department from pledged contracts entered into by the department may be used to defray any expenses incurred by the department or the State Treasurer in connection with and incidental to the issuance and sale of debentures including expenses for preparation, inspections and examinations, surveys and reports, which may be required by the purchasers of debentures, and any legal opinions deemed necessary or advisable by the department in connection with the issuance of debentures except that the proceedings authorizing the issuance of such debentures may contain appropriate provisions governing the use and application of the proceeds from the sale of the debentures or other revenues received by the department for the purposes above specified.