Ind. Code § 36-7-29-21

Sec. 21. This chapter constitutes full authority for the issuance of district bonds. No procedure, proceedings, publications, notices, consents, approvals, orders, acts, or things by a board, an officer, a commission, a department, an agency, or an instrumentality of the state is required to issue district bonds or to do any act or perform anything under this chapter, except as may be prescribed in this chapter. The powers conferred by this chapter are in addition to, and not in substitution for, and the limitations imposed by this chapter do not affect the powers conferred by any other statute.