(A) This subchapter shall be applicable to all subdivision or site plan applications with land disturbances effecting one acre or more unless eligible for an exemption or granted a waiver by the MS4 Coordinator under the specifications of § 52.07. The subchapter also applies to land development activities that are smaller than the minimum applicability criteria if such activities are part of a larger common plan of development that meets the following applicability criteria, even though multiple separate and distinct land development activities may take place at different times on different schedules.
(B) To prevent the adverse impacts of stormwater runoff, the County has developed a set of performance standards that must be met at new development sites. The following activities are exempt from these stormwater performance criteria:
(1) Additions or modifications to existing single family structures;
(2) Developments that do not disturb more than 43,560 square feet (one acre) of land, provided they are not part of a larger common development plan;
(3) Repairs to any stormwater treatment practice deemed necessary by the Sanitary Districts of LaPorte or Michigan City.
(C) When a site development plan is submitted that qualifies as a redevelopment project as defined in § 52.02 of this subchapter, decisions on permitting and on-site stormwater requirements shall be governed by stormwater sizing criteria found in the Reference Manuals noted in § 52.05. This criteria is dependent on the amount of impervious area created by the redevelopment and its impact on water quality. Final authorization of all redevelopment projects will be determined after a review by the MS4 Coordinator.
(Ord. 2007-05, passed 4-17-07)