Ordinance 2859-05 - Laserfiche WebLink

following ratios shall apply for wetlands, based on existing scores from the SEWIP freshwater model (SO Figure 5.1). Alternatively, a project proponent may rescore the site using that model to reflect existing conditions: • Fourth quartile (highest quality)—0.75 acre for each acre lost • Third quartile (moderate quality)—0.5 acre for each acre lost • Second quartile(fair quality)—0.3 acre for each acre lost • First quartile(lowest quality)—0.1 acre for each acre lost • No compensation shall be required for vegetated freshwater wetlands lost through restoration of tidal functions, if the restoration project is not used as compensatory mitigation. B. 1997 SEWIP Regulations (Apply to palustrine compensation only) The following mitigation ratios apply only to the development footprint identified in Figure 2.3A in SEWIP. 1 a. Unavoidable Impacts. Unavoidable impacts to wetland functions in the Snohomish River Estuary shall be compensated by restoring historic wetlands in the Estuary identified in the restoration plans (Table 2.1 and Chapter 5 in the 1997 SEWIP). lb. Where Compensation Can Occur. Compensation for impacts to vegetated palustrine wetlands may occur within the same Ecological Management Unit or within the adjacent Ecological Management Unit(See EMU Map, Figure 2.2 in the 1997 SEWIP). 1.c Impacts to palustrine wetlands inside the SETAC approved development footprint (SEWIP Figure 2.3A). Prior to issuance of Certificate of Occupancy or Public Works Permit Final Inspection, the applicant must submit (1) an as-built signed by the wetland biologist documenting that the wetland mitigation has been constructed per plans; and (2) performance guarantees for monitoring, maintenance, and contingency. 1 d. Impacts to palustrine wetland mitigation outside the SETAC approved development footprint (SEWIP Figure 2.3A.). Mitigation for impacts to palustrine wetlands outside the development footprint shall be completed concurrently or in advance of the impact to the wetland. Concurrent mitigation is defined as mitigation that has been constructed and has met the ratios established in Regulation 35B.3.a by the time impact is incurred. Advanced mitigation is mitigation that meets the 5-year performance standards at the time of impact. 2. Minimum Compensation Requirements. The minimum requirements for compensation will be one acre of restored wetland for one acre of wetland lost. 3a. How Compensation is Calculated. The acreage of compensation shall be calculated from the IVA function performance scores using the following ratio, provided that the minimum compensation requirement of regulation 35.B.2 is met(see 1997 SEWIP Figure 2.4 for example): IVA score for per acre function lost X (1.25) X (acres lost) =Acreage of compensation IVA score for per acre function gained 39