The City of SeaTac has begun to implement a new Business Inspection program that helps control the source of pollutants in stormwater. The City’s National Pollutant Discharge Eliminations System (NPDES) Western Washington Phase II Municipal Stormwater permit requires the implementation of this program. The NPDES Permit and SeaTac Municipal Code 12.12 allows staff to inspect business sites that have the potential to pollute stormwater; we will work with businesses to help them maintain compliance.

What can you expect from a business inspection?

You will receive notification by mail that an inspection of your business will be taking place. City of SeaTac personnel will visit your business and make recommendations on how you can prevent stormwater pollution on your site. You will be required to implement the Best Management Practices as recommended by City staff.

Best Management Practices

The City of SeaTac has adopted the Best Management Practices (BMPs) found in the 2021 King County Stormwater Pollution Prevention Manual. BMPs are measures that will help prevent pollutants from being washed into stormwater and entering lakes, rivers, and the Puget Sound. You can learn about the specific BMPs that apply to your business here.

Get a free spill kit for your business: 

Spill Kits are an important Best Management Practice (BMP) to clean up spills and prevent stormwater pollution. Businesses in the City of SeaTac may be eligible to receive a free spill kit from the City of SeaTac. To be eligible, you must have a SeaTac business license (or endorsement), your business must be connected to the City's municipal stormwater system, and your business must fall under one of the NAICS Major Group numbers listed in Appendix 8 of the Western Washington Phase II NPDES Permit.

Please send your request to Jonica Strongman at jstrongman@seatacwa.gov with the subject line: "Spill Kit Request" and include the following:

• Business license number
• Business address
• Business name

Once your request is approved, a 5 gallon spill kit will be available to pick up from SeaTac City Hall (4800 S 188^th St, SeaTac, WA 98188).