A geologic hazard abatement district may be formed pursuant to this division for the following purposes:
(a) Prevention, mitigation, abatement, or control of a geologic hazard.
(b) Mitigation or abatement of structural hazards that are partly or wholly caused by geologic hazards.
(Amended by Stats. 1993, Ch. 916, Sec. 10. Effective January 1, 1994.)