Stormwater Permitting

Guidance for building & Developing: SMC 13.104

• Stormwater submittal intake tool for Single Family Residential  [online tool in progress]
• Construction Stormwater Pollution Prevention CHECKLIST (PDF)
• Map of USDA soils 6 & 63 showing parcel lines (Blue shaded area)
• Glossary of stormwater terms

Guidance for maintaining stormwater facilities: SMC 13.108

• The City's Fact Sheet for private stormwater facility maintenance.
• Local vendors who vac catch basins and jet infiltration lines: 
  • Clallam County list is here  (to be added to this list contact stormwater@sequimwa.gov)
  • Kitsap County maintains a list here
  • Proprietary filter servicing vendors for the broader region can be found here
  • or you can Google "vac truck near me"

Checklists for inspection and maintenance of stormwater facilities:

Catch basin (PDF)
Infiltration trench/drainline (PDF)
Trench drain (PDF)
Drywell (PDF)
Detention pond (PDF)
Closed detention (manhole) (PDF)
Control structure/flow restrictor (such as inside manhole) (PDF)
Biofiltration (vegetated) swale (PDF)
Wet vegetated swale (PDF)
Wet ponds (series) (PDF)
Filter strip (PDF)
Bioretention (rain garden) (PDF)
Energy dissipator (PDF)
Debris barrier (trash rack) (PDF)
Permeable pavement (PDF)
(Please contact Sequim Public Works for other facilities.)

External links:

• VIDEOS on maintaining most types of facilities - from Vancouver, WA
• Kitsap County's Resources for Private Facility Owners (includes link to maintenance providers)
• 2019 State Stormwater Design Manual
• Rain Garden Handbook
• Low Impact Development (LID) Resources