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1 Project Information <br /> Project/Site Name: Riverside Business Park <br /> Street/Location: 505 East Marine View Drive <br /> City: Everett State: WA Zip code: 98201 <br /> Subdivision: N/A <br /> Receiving waterbody: Snohomish River— Puget Sound <br /> 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: 4.17 AC <br /> Disturbed acreage: 1.58 AC <br /> Existing structures: 0 AC <br /> Landscape 0.17 AC (proposed) <br /> topography: <br /> Drainage patterns: Runoff conveyed via existing stormwater infrastructure to existing <br /> Stormwater Quality Pond 2 prior to discharge to Snohomish River. See <br /> Appendix A. <br /> Existing Vegetation: Till soil. <br /> Critical Areas (wetlands, streams, high erosion Flagged wetland adjacent to site on SE <br /> risk, steep or difficult to stabilize slopes): corner of Riverside Road and 8th Street <br /> intersection. Snohomish River and 200-foot <br /> Shoreline Jurisdiction in project vicinity. <br /> List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL)for the <br /> receiving waterbody: According to the Washington State Water Quality Atlas website, there are <br /> no 303(d) listed pollutants at the existing outfall after Stormwater Quality Pond 2. <br /> 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 Location Depth Concentration <br /> (Pollutant) <br /> TPH-O Riverside Road To groundwater table 2500 mg/kg <br /> 1.2 Proposed Construction Activities <br /> This project includes the design and construction of 8th Street with storm and utility infrastructure <br /> mains and stubs (water, gas, power and communications) to service the lots' development; and <br /> public access road-side trails on the east and north sides of the Riverside Road and 8th Street <br /> respectively. The new street surface drainage will be collected and pumped to the Riverside <br /> Road drainage system for treatment in existing Stormwater Quality Pond 2. The overpass <br /> drainage system will be redirected for treatment prior to entering Stormwater Quality Pond 2 in <br /> exchange for the pumped storm drainage runoff from 8th Street. The existing storm system in <br /> Page 14 <br />