400 RIVERSIDE RD SEPA 016 - 039 - RIVERSIDE BUSINESS PARK Land Use Decision Documents 2025-04-14

1 Table 7: Critical Habitat Determination Summary Species Name Common Name Determination of Effect Oncorhyncus tshawytscha Chinook salmon No Effect Salvelinus confluentus Bull Trout No Effect ' Oncorhynchus mykiss Orcinus orca Steelhead No Effect Orca No Effect Puget Sound Steelhead DPS Oncorhynchus mykiss—Threatened,listed (reaffirmed) April 14, 2014) ' Critical habitat designated February 24, 2016 (50 CFR 223 and 226) Puget Sound Steelhead are documented in the Snohomish River and Possession Sound and also use these areas for juvenile migration. "Most summer steelhead enter fresh water as sexually immature ' fish between May and October, although some may enter as early as February (R2 Resource Consultants, Inc., 2008). At the time of entry, summer steelhead are several months to as much as a year from spawning.Winter steelhead enter fresh water between November and early May as sexually ' maturing fish. Most winter-run fish are a few weeks to several months from spawning" (R2 Resource Consultants, Inc., 2008). ' The current condition of the riparian buffer area at the project site is highly degraded.Refer to Section 4.4. It is unlikely steelhead will utilise the area for migration resting areas. The Port of Everett will improve this buffer area. Project runoff from impervious surfaces will be routed into constructed ' wetlands and buffer vegetation will further infiltrate stormwater runoff and decrease turbidity. The present condition of the compacted urban soils at the project site and the degraded buffer is likely producing large amounts of turbidity in the project vicinity. The project with its stormwater runoff ' plan and improved buffer area will likely decrease the amount of sediments that might be increasing turbidity in the area now. ' Temporary increases in terrestrial noise will have no effect on fish species due to the highly-increased attenuation rates of soundwaves moving through water. In addition, the terrestrial noise action area of the project is a radius of 81 feet and project activity will occur, at most, 50 feet from the bank of ' the Snohomish. Therefore, noise effects from the project will have no effect on steelhead. There is only a minor potential for an individual steelhead being within the action area during the ' proposed actions; however, it is very unlikely that they can access this primarily upland area under normal condition and would only potentially utilize this area during a major flood event as it is highly degraded uplands. Project noise will have no effect on terrestrial species due to existing ambient noise ' levels and the proposed restoration improvements. Project activities will actually reduce stormwater and clean runoff into the river, so turbidity should decrease as a result of these action. Therefore, the proposed actions will have No Effect on Puget Sound Steelhead. The indirect and direct effects are expected to be highly discountable. Project activities will only occur in the upland area of the site and not in the riparian area of the ' Snohomish River. In addition, the project will utilize all best management practices to prevent sedimentation runoff and there will be no alteration of the riparian area of the river; therefore, the proposed activities will have No Effect on Steelhead Critical Habitat. However, the restoration Soundview Consultants LLC December 8,2016 1413.0003 Riverside Business Park—FEMA ESA Habitat Assessment Report Page 20