Ordinance 2859-05 - Laserfiche WebLink

• Compensation for impacts to tidal (i.e., anadromous fish) habitats must occur with tidal habitat creation, enhancement, or restoration, preferably within the same EMU (SO Figure 3.1) or secondarily within the adjacent downstream EMU, with the following exceptions: • Because the nature of salmonid habitat functions provided by the salmonid habitat in EMU 7 (Port Gardner shoreline) is somewhat different from those provided in EMUs upstream in the estuary, impacts in EMU 7 shall be compensated only in EMUs 4 or 7. • Opportunities for habitat restoration in the highly modified habitats in EMUs 5 and 6 are limited; therefore, impacts in EMUs 5 and 6 may be compensated in EMUs 2, 3, 4, 5, or 6. Because EMUs 1, 2, and 6 have the smallest proportions of their total acreage that is salmon habitat (SO Table 4.2) within their boundaries, further reduction of habitat area and function should be avoided. • Impacts in EMU 3 may be compensated in EMUs 2, 3, or 4. 6. How Compensation is Calculated. The SEWIP assumes that in all cases there will be no temporal loss of cumulative salmonid habitat function as calculated by the model. Where mitigation is provided in advance of project impacts (e.g., the performance standards established for Year 5 have been met at the mitigation site), the acreage of compensation shall be calculated from the IVA function performance scores (Year 5) using the following ratio,provided that a minimum compensation requirement of 1:1 acres ("no net loss") of area is met and provided that the minimum functional replacement compensation requirement of Regulation 35.A.3 is met. IVA score per acre function lost X acres lost =Acres of compensation IVA score ner acre function gained at mitigation site 7. How Compensation is Calculated (Concurrent Mitigation). The acreage of compensation for concurrent mitigation (mitigation that is constructed but may not be fully functioning at the time impact is incurred) shall be calculated from the IVA function performance scores at the time of impact, provided that the minimum compensation requirements of Regulation 35.A.3 are met at all times (see Table 5.1 in the Salmon Overlay for example): IVA score per acre function lost X 1.3 X (acres lost) =Acres of compensation IVA score per acre function gained (at the time of impact) 8. Compensation Based on Limiting Function. Under Regulations 35.A. 6 and 7, the acreage needed for compensation shall be calculated separately for the chinook and coho/bull trout functions. Whichever function requires the greater acreage for 37