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CITY OF EVERETT STORMWATER MANAGEMENT MANUAL <br /> Step 1: Determine the project's pollutants <br /> of concern based on the project's receiving <br /> water(s) Ai C <br /> v Nit inikinatio <br /> Step 2: Determine if facility will be <br /> privately or publicly owned. <br /> 4' <br /> Apply Oil Control <br /> Step 3: Determine if an Oil Facility <br /> Control Facility is Required • API Separator <br /> ~ • CP Separator <br /> • Apply Pretreatment • Linear Sand Filter <br /> • Presettling Basin, Step 4: Determine if <br /> • Wet Vault,or Infiltration for Pollutant <br /> • Any Basic Treatment Removal is Practicable <br /> BMP Apply a Phosphorus <br /> Control Facility <br /> Step 5: Determine if • Large Sand Filter' <br /> Phosphorus Control is • Large Wet Pond <br /> Required • Media Filter' <br /> 040• • Two Facility <br /> Apply Infiltration <br /> • Infiltration Basin Treatment Train <br /> • Infiltration Trench Step 6: Determine if <br /> Enhanced Treatment is <br /> • Bioinfiltration Swale Required <br /> 0.4 fp) <br /> Step 7: Apply a Basic Apply an Enhanced <br /> Treatment Facility Treatment Facility <br /> • Filter Strips • Large Sand Filter' <br /> Notes: • Basic Wet ponds • Stormwater Treatment <br /> 'Requires Prior Approval by City • . Wet Vault Wetland <br /> for Public Facilities • Stormwater Treatment • Compost Amended <br /> Wetlands Filter Strip <br /> • Sand Filter Basin • Two Facility <br /> • Sand Filter Vault Treatment Train <br /> • Bioretention—ZPG • Bioretention <br /> �� Stormfilter <br /> • WSDOT Media Filter • WSDOT Media Filter <br /> Figure 4.1 Treatment Facility Selection Flow Chart <br /> Volume I—Minimum Technical Requirements <br /> 4-2 <br />