9506 7TH AVE SE 2025-04-08 - Laserfiche WebLink

• WDNR Forest Practices Application Mapping Tool FPAMT) North Creek is mapped by WDNR as Type F stream approximately 700 feet off-site to the west. No other features are mapped on or near the subject property. • Snohomish County PDS Map Portal PDS depicts North Creek and a large associated wetland approximately 700 feet off-site to the west. No other wetlands or streams are mapped on or near the site by Snohomish County. • City of Everett—Map Everett The City of Everett maps a stream and small riparian wetland in the eastern half of the subject property. The stream is identified as "Trib. North Creek." No stream typing or wetland categories are provided by this source. 2.2 WETLAND AND STREAM DETERMINATION METHODOLOGY All watercourses observed within the project area were located in the field and are depicted on the attached map. Ordinary high water marks (OHWM) were delineated using the methodology described in Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State(Anderson et al. 2016). Wetland Resources' staff located wetlands and streams occurring within and near the project site in July 2022. On-site wetland conditions were evaluated using routine methodology described in the Corps of Engineers Wetlands Delineation Manual (Final Report; January 1987), except where superseded by the 2010 Regional Supplement to the Corps of Engineers Wetland Delineation Manual.• Western Mountains, Valleys, and Coast Region (Version 2.0, referred to as 2010 Regional Supplement). Our findings are consistent with these manuals. The following criteria descriptions were used in the boundary determination: 1.) Examination of the site for hydrophytic vegetation (species present and percent cover); 2.) Examination of the site for hydric soils; 3.) Determining the presence of wetland hydrology 1.1.1 Hydrophytic Vegetation Criteria The manuals define hydrophytic vegetation as the sum total of macrophytic plant life that occurs in areas where the frequency and duration of inundation or soil saturation produce permanently or periodically saturated soils of sufficient duration to exert a controlling influence on the plant species present. One of the most common indicators for hydrophytic vegetation is when more than 50 percent of a plant community consists of species rated"Facultative" and wetter on lists of plant species that occur in wetlands. 2.2.1 Soils Criteria and Mapped Description The manuals define hydric soils as those that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part. Field indicators are used for determining whether a given soil meets the definition for hydric soils. Chelsea Heights 4 Critical Area Study &Buffer Enhancement Plan WRI#22101 October 10, 2022