7505 SEAWAY BLVD SEPA 016 - 034 - SEAWAY TRANSIT CENTER Land Use Decision Documents 2025-04-22

4)Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. Jhelpl The project will not withdrawal or divert surface water. The project will manage(treat and retain)stormwater on the site to maintain water quality and control off-site flows to meet or exceed all City of Everett/DOE standards. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. Jhelpl No 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. [help' No significant adverse waste materials are anticipated to be discharged to surface waters. The project treats stormwater runoff from the project site to meet or exceed all City of Everett/DOE standards before leaving the site and entering the City of Everett stormwater conveyance system. Once the site's stormwater enters the City's stormwater conveyance system,the treated stormwater flows to the east and ultimately to the north discharging into Narbeck Creek. b. Ground Water: 1)Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. Jhelpl No 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals. . . ; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. 'help' None c. Water runoff(including stormwater): 1) Describe the source of runoff(including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. jhelpl The source of runoff is from rainfall. On-site runoff will be collected by a series of catch basins and will then be conveyed through on-site water quality and flow control facilities.After on-site treatment and retention,the runoff will be released from the on-site flow control facility and enter an existing storm drain conveyance system which will convey flow to Narbeck Creek. 2) Could waste materials enter ground or surface waters? If so, generally describe. 'help' SEPA Environmental checklist(WAC 197-11-960) July 2016 Page 5 of 15