Seattle's Stormwater Code identities eight activities that pose a high risk of polluting stormwater and they are as follows:

Fueling Operations

Examples: Transferring fuel into mobile vehicles or equipment at permanent stations (such as gas stations), temporary stations (such as construction sites) and mobile fueling stations (such as mobile tank trucks).

Washing and Cleaning Vehicles, Equipment and Buildings

Examples: Mobile vehicle steam cleaning, washing vehicles at commercial car washes and permanent parking facilities (rental car lots and fleet lots), washing tools or equipment outside, outdoor cleaning of commercial cooking equipment, washing the outside of buildings and mobile interior building cleaning.

Loading and Unloading Liquids or Solid Materials by Truck or Rail

Examples: Transferring non-containerized bulk liquids from truck or rail and loading and unloading materials at a commercial or industrial loading dock.

Storing Liquids in Stationary Above-ground Tanks

Examples: Storing liquids such as chemicals, fertilizers, pesticides, solvents, grease or petroleum products in stationary tanks above the ground.

Storage of liquids, Food Wastes or Dangerous Wastes in Outside Portable Containers

Examples: Outside storage of vegetable grease, animal grease, other food wastes, used oil, liquid feedstock, cleaning compounds, chemicals, solid waste or dangerous waste.

Outside Storage of Non-containerized Materials, By-products or Finished Products

Examples: Storing things like non-liquid pesticides or fertilizers, contaminated soil, food products or food wastes, metals, building materials, sand, gravel, road salt and topsoil.

Outside Manufacturing

Examples: Processing, fabrication and maintenance or repair of vehicles and equipment. Other examples include sand blasting, painting, coating or finishing of vehicles, products and equipment.

Landscaping Construction or Maintenance

Examples: Landscape construction and other "land disturbing" activities; also fertilizer and pesticide application and disposal of yard waste near a public drainage system.

To download a copy of Seattle's Stormwater Code or to better understand the measures required of Seattle businesses to control stormwater pollution, visit our Stormwater Publications page. To learn how the Resource Venture can help you comply with Stormwater regulations, visit our Stormwater Pollution Prevention page.