3400 RIVERFRONT BLVD BASE FILE 2020-07-15

VIII. Best Management Practices(BMPs) You must use the BMPs listed in the Stormwater Management Manual for Western Washington or the Stormwater Management Manual for Eastern Washington or other manuals approved by Ecology. Alternatively,you may use demonstrably equivalent BMPs on the basis of permit condition S9.C.4. If you intend to use a BMP at your site that is not included in these manuals,but that you believe meets the definition of a demonstrably equivalent BMP,you must notify the appropriate regional office. www.ecy.wa.gov/programs/wq/stormwater/construction/contacts.html(See Definitions in the Construction Stormwater General Permit).* *Note that if you receive permit coverage without indicating the preference for a demonstrably equivalent BMP and later decide to use one,you must provide Ecology with notice of the selection of an equivalent BMP no less than 60 days before the intended use of the equivalent BMP. IX. Discharge/Receiving Water Information Indicate whether your site's stormwater and/or dewatering water could enter surface waters,directly and/or indirectly: Water will discharge directly or indirectly(through a storm drain system or roadside ditch)into one or more surface waterbodies (wetlands,creeks, lakes,and all other surface waters and water courses). If your discharge is to a storm sewer system, provide the name of the operator of the storm sewer system: (e.g., City of Tacoma): City of Everett (NOTE: If your stormwater discharges to a storm sewer system operated by the City of Seattle, King County, Snohomish County, City of Tacoma, Pierce County,or Clark County,you must also submit a copy of this NOI to the appropriate jurisdiction.) I I Water will discharge to ground with 100%infiltration,with no potential to reach surface waters under any conditions. If your project includes dewatering,you must include dewatering plans and discharge locations in your site Stormwater Pollution Prevention Plan. Location of Outfall into Surface Waterbody Enter the outfall identifier code,waterbody name, and latitude/longitude of the point(s)where the site has the potential to discharge into a waterbody(the outfall). Enter all locations.See illustration of Surface Waterbody Outfall locations at the end of this form. • Include the names and locations of both direct and indirect discharges to surface waterbodies,even if the risk of discharge is low or limited to periods of extreme weather.Attach a separate list if necessary. ® Give each point a unique 1-4 digit alpha numeric code.This code will be used for identifying these points in WQWebDMR. ® Some large construction projects(for example,subdivisions, roads,or pipelines)may discharge into several waterbodies. ® If the creek or tributary is unnamed, use a format such as"unnamed tributary to Deschutes River." ® If the site discharges to a stormwater conveyance system that in turn flows to a surface waterbody,include the surface waterbody name and location. Outfall Identifier Code.These cannot be Surface Waterbody Name at Latitude Longitude symbols. (Maximum of four characters). the Outfall Decimal Degrees Decimal Degrees Example: OO1A Example: Puget Sound ' 47.5289047°N 122.3123550°W 1 Snohomish River 47.968538°N -122.188418°W N °W °N °W If your site discharges to a waterbody that is on the impaired waterbodies list(e.g.,303[d]list)for turbidity, tine sediment, high pH, or phosphorus,Ecology will require additional documentation before issuing permit coverage and these sites will be subject to additional sampling and numeric effluent limits(per Permit Condition S8). Ecology will notify you if any additional sampling requirements apply. Information on impaired waterbodies is available online at;http://www.ecy.wa.gov/programs/wq/303d/index.html. ECY 020-85(Rev.12/14) 03/5'