5900 36TH AVE W SEPA 015 - 034 - SOUNDVIEW BUSINESS CAMPUS - VERITAS Land Use Decision Documents 2025-04-22

The Washington State Department of Ecology's (DOE) Washington State Wetland Rating System for Western Washington (Revised) was used to classify the wetlands associated with this site. DOE's Washington State Wetland Rating Form for Western Washington (Version 2) was completed for each wetland. Rating forms and mapping are included as an appendix to this report. Based on the classifications and point totals achieved from the rating system, Everett Municipal Code, Chapter 37, was applied to determine wetland buffer widths. Wetlands B and D are classified as Category III wetlands under the rating system, with habitat scores below 19 points, and thereby receive 60- foot buffers (EMC 19.37.110(A)(1)(a)). Wetlands A and C are classified as Category II wetlands, both with 19 habitat points, and thereby receive 75-foot buffers (EMC 19.37.110(A)(1)(b)). Everett Municipal Code (EMC 19.37.050(A)(7)) provides exemptions for small wetlands that meet certain criteria. Although Wetlands A through C are small (<4,000 sq. ft.), they are part of a wetland mosaic. Wetland mosaics occur when two or more wetlands lie within close proximity and, inclusive of the upland areas between the them, the wetlands compose more than 50% of the overall area. In this case, when Wetlands A through C are connected together, they make up 73% of the overall area which disqualifies this exemption. All four on -site wetlands are regulated. Japanese Gulch Creek (Stream A) is located 400+ feet off -site to the west, west of the railroad track. The reach of the stream adjacent to the west of the site is mapped by Washington Department of Natural Resources as a Type N stream. As the stream flows north toward Possession Sound, north of 51h Street, the classification changes to a Type F. At this point, the stream is 980+ feet from the subject property. A tributary to Japanese Gulch Creek (Stream B) lies off -site to the southwest. This stream is mapped as a Type N. Edgewater Creek (Stream C) is located 220+ feet off -site to the east/northeast. The reach of the stream located nearest the site is classified as a Type N stream. The classification for Stream C changes to Type S approximately 700 feet north of the project site. Due to intact native buffer vegetation along these streams, Everett Municipal Code (EMC 19.37.170(A)(3)) requires 50' buffers for Type N streams. Where Stream A changes to a Type F classification, buffer vegetation has been altered by development, so the code requires 150' buffers at this location. EMC 19.37.170(B)(1) requires stream buffers to be extended 25' beyond the tops of slopes in excess of 25%. Taking slopes into account, none of the buffers for Stream A reach the subject property. Steep slopes in the buffer of Stream B, however, do affect the 50' buffer associated with this stream and make it an irregular shape. This buffer is shown on the site plan and on the attached map. No other wetlands or streams are located on the property, including on Lot 5, which is not proposed for development at this time. Critical Area Study 2 WRI# 15202 Soundview Business Campus Rev. #2: October 2, 2015