SMP Ordinance Exhibits - Laserfiche WebLink

Home Browse Search

equivalent or greater wetland functions. The ratios shall apply to mitigation that is in-kind, is on-site, is the same category, is timed prior to or concurrent with alteration, and has a high probability of success. These ratios do not apply to the use of credits from a certified wetland mitigation bank or ILF program. When credits from a certified bank or ILF program are used, replacement ratios should be consistent with the requirements of the bank’s/program’s certification. 17B.05.020I-1. Wetland Mitigation Ratios for Unavoidable Wetland Impacts in Shoreline Jurisdiction Category and Type of Impacted Wetland Restoration or Creation1,2 Rehabilitation1,2 Enhancement Only1,3 Category I, forested 6:1 12:1 24:1 Category I, non-forested 4:1 8:1 16:1 Category II, forested 4:1 8:1 16:1 Category II, vernal pool4 2:1 4:1 Case-by-case All other Category II 3:1 6:1 12:1 All Category III 2:1 4:1 8:1 All Category IV 1.5:1 3:1 6:1 1 Natural heritage sites, alkali wetlands, and bogs are considered irreplaceable wetlands because they perform special functions that cannot be replaced through compensatory mitigation. Impact to such wetlands would therefore result in a net loss of some functions no matter what kind of mitigation is provided. 2 Provides gains in a whole suite of functions both at the site and landscape scale. Rehabilitation actions often focus on restoring environmental processes that have been disturbed or altered by previous ongoing human activity. 3 Actions which provide gains in only a few functions. Enhancement action often focuses on structural or superficial improvements to a site and generally does not address larger scale environmental processes. 4 Compensatory mitigation for vernal pool impacts must be seasonally ponded wetland area(s). 7. Increased replacement ratios: The Administrator shall increase the wetland mitigation ratios under the following circumstances: 1. Uncertainty exists as to the probable success of the proposed restoration or creation; 2. A significant period of time will elapse between impact and replication of wetland functions; or 3. Proposed mitigation will result in a lower category wetland or reduced functions relative to the wetland being impacted. 8. Alternative mitigation ratios: The Administrator may approve different mitigation ratios when the applicant proposes a combination of wetland creation, restoration, rehabilitation, and/or