(1) Stormwater management for subdivisions shall incorporate appropriate treatment measures for water quantity and quality to meet the requirements specified below for development of the lots as well as the infrastructure to support the project. Each application shall include maximum developed, disturbed and impervious areas for each lot based upon the definitions contained in Section 3, DEP Chapter 500, Stormwater Management.
(2) For subdivisions that require a DEP review under the Site Location of Development Act (SLDA), a stormwater management plan shall be submitted which complies with the SLDA permit and the requirements of DEP Chapter 500, Stormwater Management.
(3) For subdivisions that do not require a SLDA permit but require a DEP permit under the Stormwater Law, a stormwater management plan shall be submitted which complies with the requirements of DEP Chapter 500, Stormwater Management.
(4) For subdivisions outside of the watershed of a great pond that require neither a SLDA permit nor a DEP stormwater permit, a stormwater management plan shall be submitted that complies with Sections 4B, Basic Standards, and 4C, General Standards, of the DEP Chapter 500, Stormwater Management.
(5) For subdivisions within the watershed of a great pond that require neither a DEP SLDA permit nor a DEP stormwater permit, a stormwater management plan shall be submitted that complies with Section 4B, Basic Standards, of DEP Chapter 500, Stormwater Management. In addition, the stormwater management plan shall comply with Section 4D, Phosphorous Standards, of DEP Chapter 500, Stormwater Management.
(6) For all subdivisions, regardless of size, a stormwater management plan shall be submitted that complies with Section 4E, Flooding Standard, of the DEP Chapter 500, Stormwater Management, as amended. For a project that does not require a DEP SLDA permit, the Planning Board, upon a request by the applicant, may waive the flooding standard in the event that greater than 75% of the impervious and developed areas (as defined in Section 3 of DEP Chapter 500) for both the lots and infrastructure are treated through the use of buffers in accordance with DEP Chapter 500, Stormwater Management.
(7) For all subdivisions, regardless of size, located in the Highland Lake watershed, the following additional standards shall be met:
(a) Projects in the Highland Lake watershed shall not be allowed to pay the compensation fee for exceeding the project's phosphorus allocation. Notwithstanding 1 M.R.S.A. § 302, this amendment shall be applicable to and shall govern any application for subdivision plan approval that did not receive lawful final approval by, and so was pending on or at any time after, September 5, 2017, regardless of whether that application was a pending proceeding under 1 M.R.S.A. § 302.
