11415 AIRPORT RD 2023-11-28 - Laserfiche WebLink

Thence in a Southwesterly direction on a line parallel with the Northeasterly line of said Tract for 100 feet; Thence in a Northeasterly direction along the Northeast line of said Airport Road a distance of 130 feet, more or less, to the True Point of Beginning, Situate in the County of Snohomish, State of Washington. 3.0 Methodology The wetland assessment and delineation were performed using the U.S. Army Corps of Engineers "Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coastal Region (COE, 2010). Wetlands were rated with the Washington State Department of Ecology 2014 wetland rating methodology (DOE, 2014). The assessment included a review of the City of Everett Critical Area Mapping, National Wetland Inventory, the Department of Natural Resources Forest (DNR) FPARS stream mapping, and the USDA National Resource Conservation Service's web soil survey, see attached maps. 4.0 Documentation of Field Work A 2014 wetland delineation, by Wetland Resources, Inc., was re-established by survey. Field work included verification of the 2014 wetland boundary and establishment new sample locations. Routine field data sheets are attached. The 2014 rating methodology was used for the functional assessment of wetlands. Rating forms and rating maps are attached. Baseline hydrologic data was not collected because surface water was absent in July and August. The wetlands are not identified on the National Wetland Inventory map, see attached NWI map. The City of Everett GIS map does identify these wetlands, see the attached City of Everett Critical Areas map. 5.0 Identification and Characterization of Critical Areas There are two wetlands, divided by an existing gravel utility access road, see the Site Plan and Critical Area Map. Wetland A extends from north of the utility access road to 112th Street S.W. Wetland B extends from south of the utility access road to the Sonrise Christian Center parking lot. A tributary of Swamp Creek flows southerly through both wetlands. Using the WDFW Cowardin wetland characterization method, Wetland A is Palustrine Forested (PFO), and Wetland B has PFO and Palustrine scrub -shrub (PSS) Cowardin classes, see the wetland rating Cowardin map (Cowardin, 1979). The ponded area of Wetland B has a shrub canopy and an unconsolidated bottom that is mud. The pond is less than 6.5 feet deep at mean - low level. The Riverine classification, as defined in Cowardin, could apply to wetlands along and within the stream channels. However, these areas are forested, so PFO Cowardin classification is more appropriate because the Cowardin distinguishes wetlands mostly by vegetative canopy. The use of Riverine by Cowardin is not the same as the DOE rating methodology. The wetland plan communities are dominated by wetland indicator species, including black cottonwood (Populus trichocarapa b.), red alder (Alnus rubra), willow (Salix sp.), red -osier dogwood (Cornus sericea), slough sedge (Carex obnupta), reed canarygrass (Phalaris arundinacea), and Himalayan blackberry (Rubus armeniacus). For Wetlands A and B, soils are most like Norma silt loam which is a hydric soils series. Norma soils have a water table within 12 inches of the soil surface and are also seasonally inundated. The soils profile is Ap 0-9 inches, very dark gray 10YR 3/1 to gray 10YR 511; 2Bg-9-28 inches dark grayish brown 1 OYR 4/2 with prominent yellowish brown IOYR 5/8 redox concentrations 2