2320 RAILWAY AVE INTERWEST CONSTRUCTION INC 2023-02-02

M . • drain at the northeast corner of the project site. 18.The Preliminary Geotechnical Study prepared for the City of Everett in 2009 by Aspect Consulting indicated the presence of shallow soils containing debris, organics, wood waste and sawdust at various locations on the Riverpoint site—which would not provide suitable support for the 54" stormwater pipe. Per the report's recommendations,the proposed location for the stormwater pipe shall be potholed at frequent intervals prior to installation in order to better classify subsurface conditions along the route of this pipe. If undesirable fill conditions are encountered that are infeasible to avoid, over-excavation and/or subgrade reinforcement—or equivalent measures—will likely be required to prevent undesirable future sags in this pipeline. 19.The Snohomish River is listed in the SWMM as both a Flow Control Exempt and a Basic Treatment Receiving Water. Flow Control (detention)will not be required except as needed to ensure adequate capacity in the downstream conveyance system. Runoff Treatment BMPs approved for basic treatment in the City of Everett SWMM will be required. 20. Because this project will discharge to a flow control exempt water body,the standard requirements for on-site stormwater management are not applicable and the applicant does not have to consider the use of bioretention, raingardens, permeable pavement, or full dispersion in demonstrating compliance with Minimum Requirement#5 for On-site Stormwater Management. However, in accordance with the 2014 SWMMWW,this project must implement BMP T5.13; BMPs T5.10 A, B, or C; and BMP T5.11 or T5.12, if feasible. 21. Depending on site usage coverage under the Industrial Stormwater General Permit or Sand and Gravel Stormwater General Permit may be required. Refer to Section S1(A) of each of the permits to determine applicability to the proposed operations. The permits can be found at https://ecology.wa.gov/Regulations-Permits/Permits-certifications/Stormwater-general-permits. If required, coverage should be obtained directly from the Washington Department of Ecology. 22. This project is subject to Transportation Mitigation in accordance with Ordinance 3389-14 (codified as EMC 18.40) and subsequent revision. Applicant is encouraged to obtain a copy of the Ordinance and determine applicable mitigation fees and/or other requirements prior to building permit application. The actual charges and requirements shall be as per the information on the approved plans at the time of building permit issuance and the ordinance in effect at that time. The final traffic mitigation fee due for this project will be based on an approved Traffic Impact Analysis to be supplied prior to building permit issuance. 23. Right-of-Way dedication and frontage improvements are required along the east property line of the subject site. 24. Full standard half street improvements are required along the entire project frontage, including but not limited to curb, gutter, sidewalks, street widening and drainage control per City Design Standards. Transitional off-site improvements shall be constructed to connect the end of the existing paved road south of the property to the proposed interim conditions for Railway Ave directly fronting the property. 5