The purpose of this article is to provide for the health, safety, and general welfare of the citizens of the city-parish and protect the environment within the city-parish, to the maximum extent practicable as required by federal and state law, through the regulation of certain activities and discharges that may impact stormwater discharges to the city-parish's storm drainage system. Among other things, this article regulates (a) illicit discharges of pollutants, and illicit connections, to the city-parish's municipal separate storm sewer system; (b) certain stormwater discharges in connection with construction activities; (c) certain land clearing activities that may impact stormwater discharges; and (d) post-construction erosion and sedimentation control. The objectives of this article are:
Sec. 34-441. - Best management practices.
The public works director or his designee may adopt requirements identifying best management practices for any activity, operation, or facility that may cause or contribute to pollution or contamination of stormwater, the MS4, or waters of the state. The owner or operator of a commercial or industrial establishment within the city-parish shall provide, at its own expense, reasonable protection from accidental discharge of prohibited materials or other wastes into the MS4 or waters of the state through the use of these structural and non-structural BMPs. Further, any person responsible for a property or premise that is, or may be, the source of an illicit discharge or that has an illicit connection may be required to implement, at such person's sole expense, additional structural and non-structural BMPs to properly address such illicit discharge and/or illicit connection. Any BMPs adopted by the public works director or his designee pursuant to this section shall be incorporated in any stormwater pollution prevention plan developed by a discharger within the city-parish in order to comply with the requirements of any applicable LPDES permit issued to such discharger. (Ord. No. O-237-2007, § 2, 10-16-07)
Subdivision IV. - Post-Construction Erosion and Sedimentation Control
Sec. 34-511. - Post-construction erosion and sedimentation control.
Owners and operators, including developers and property owners, shall use and maintain appropriate erosion and sedimentation control measures to ensure that erosion, or adverse conditions caused by erosion or sedimentation, is eliminated or held to an acceptable minimum so that soil and other pollutants are not discharged to the MS4 or waters of the state nor onto an adjourning property or right-of-way. For example, vegetation, erosion, and sediment control measures, including the following installed structural measures, if any, should be used and maintained: stormwater detention structures (including wet ponds); flow attenuation by use of open vegetative swales and natural depressions; other velocity dissipation devices; infiltration of runoff on site; and sequential systems that combine several such practices. (Ord. No. O-237-2007, § 2, 10-16-07)
Lafayette City-Parish Stormwater Ordinance
City of Lafayette Stormwater Technical Standards Manual