This chapter does not affect or impair any local ordinances or other provisions of law requiring permits to be obtained before excavation. However, a permit issued by any governing body does not relieve the excavator from complying with the requirements of this chapter , unless the governing body is the excavator and the governing body and the operator have agreed in writing to waive notification under this chapter . However, such an agreement shall not be considered in the issuance of any required permit. 92 Acts, ch 1103, §8