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

I actions the Port of Everett will perform concurrently in the buffer area is likely to improve this critical habitat. Puget Sound Chinook Salmon ESU and Critical Habitat Oncorhynchus tshatvytscha—Threatened,listed (reaffirmed)June 28, 2005 Critical habitat designated September 2, 2005(50 CFR Part 17.11) Puget Sound Chinook salmon are documented within the Snohomish River and Puget Sound and utilize the Snohomish River for migration. "Two primary juvenile life history patterns occur in chinook salmon. These are based on the times of river entry and spawning, and are linked to the duration of juvenile freshwater residence. The first life history pattern is commonly referred to as "stream-type." Adults of this type enter mainstem rivers in late-March through May and spawn between mid July and early-September. Progeny from these stocks emerge from the gravel between the end of March and early-May of the following spring.Juveniles remain in fresh water for a full year, before smoking and migrating downstream to salt water. A small proportion of juveniles may remain in fresh water until their second year" (Hayman, 1996). "The second chinook salmon life history pattern is commonly referred to as "ocean-type." Adults enter mainstem rivers from July to late-September, and spawn between mid-September and mid November.Progeny from these stocks emerge from mid-March to mid-April.As a rule,juveniles from these stocks migrate downstream during their first spring and enter the estuary, where they remain until reaching sizes of 2.4 to 2.8 inches. Also, a portion of these ocean-type emergent fry may remain in the river and rear for several weeks to two months and then migrate downstream to the estuary and beyond" (Hayman, 1996). ' Local salmonid habitat assessments suggest the immediately defined shoreline of the Snohomish River rates low for habitat quality relative to the marsh complexes existing in the riparian areas on the ' opposite river bank. Refer to Section 4.4. Chinook may be in the project area during project activities, however, due to lack of habitat within the Action Area and the project proposing upland work only, direct effects from the project on Chinook salmon are not likely. ' 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 Chinook Salmon. 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 Puget Sound Chinook Salmon Critical Habitat. Soundview Consultants LLC December 8,2016 1413.0003 Riverside Business Park—FEMA ESA Habitat Assessment Report Page 21