• Have adequate codes, contracts, interlocal agreements, or similar means to control discharges to and from the county’s storm drainage system;

• Map the storm drainage system;

• Coordinate permit actions, both within Thurston County government and with other cities and counties;

• Provide opportunities for public involvement;

• Control runoff from new development;

• Construct stormwater treatment facilities to clean up pollution from existing development;

• Require pollution prevention measures through county code and have a business inspection program to enforce the code;

• Inspect the county’s storm drainage system to find pollution, locate the source, and take measures to stop the pollution;

• Inspect and maintain the county’s storm drainage system according to established standards, and ensure inspection and maintenance of private systems; and

• Educate county staff and the public about stormwater pollution and how to prevent it.
    

NPDES Maps and Documents

Thurston County is also required to post several documents on the web, as shown below.