(1) Stormwater management facilities are required for compliance with stormwater management regulations in effect at the time of facility construction. In addition, stormwater management facilities may be publicly or privately owned. Activities that disturb such facilities may lead to violations of the NPDES permit or Federal or State water quality regulations, degradation to ground or surface waters, or other environmental or safety hazards. The following activities are prohibited within stormwater facilities and adjacent to such facilities where such activities may result in functional degradation of the facility:

(2) Any activity that removes or disturbs existing stormwater facilities for the purposes of maintenance or replacement, which is authorized in writing by the City, is not in violation of subsection (1) of this section. (Ord. 13-09 § 10 (Exh. 2))