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i <br />1 <br />1 Project Information <br />1 Project/Site Name: Riverside Business Park <br />Public Access Trail Segments C, D, F, J, <br />and K with Viewpoints G and H <br />1 Street/Location: 505 East Marine View Drive <br />City: Everett State: WA Zip code: 98201 <br />Subdivision: N/A <br />' Receiving waterbody: Snohomish River <br />1 1.1 Existing Conditions <br />Total acreage (including support activities such as off -site equipment staging yards, material <br />storage areas, borrow areas). <br />' Total acreage: 3.212 <br />Disturbed acreage: 3.212 <br />1 Existing structures: 0 <br />Landscape 2.564 <br />topography: <br />' Drainage patterns: The site currently drains toward the Snohomish River though a series of low <br />points along the shoreline. This project maintains those low points and <br />mimics the natural discharge locations. <br />Existing Vegetation: The project site has a mix of Himalayan Blackberries, Scotts Broom, and <br />1 various grasses. <br />Critical Areas (wetlands, streams, high erosion None <br />risk, steep or difficult to stabilize slopes): <br />' List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the <br />receiving waterbody: None <br />1 Table 1 includes a list of suspected and/or known contaminants associated with the construction <br />activity. <br />Table 1 — Summary of Site Pollutant Constituents <br />Constituent <br />(Pollutant) <br />Location <br />Depth <br />Concentration <br />Arsenic -affected soils <br />(remediated and <br />contained below cap) <br />North end of site <br />(see Appendix F, <br />Figure 4) <br />12" (minimum) <br />Maximum detected <br />soil concentration of <br />arsenic: 954 mg/kg <br />Page 14 <br />