
Driving directions to South Treatment Plant
Directions from I-5
- Take Exit 154 to I-405 North.
- Take Exit 1 (Tukwila/West Valley).
- At light, turn left onto Interurban Avenue S.
- Turn right onto S.W. Grady Way.
- Continue on S.W. Grady Way and turn onto Longacres Drive S.W.
- Turn right onto Jackson Place S.W./Monster Road S.W.
- See map for septage disposal directions
Directions from southbound I-405
- Take Exit 1 (Tukwila/West Valley).
- At light, turn right onto Interurban Avenue S.
- Turn left onto S.W. Grady Way.
- Continue on S.W. Grady Way and turn onto Longacres Drive S.W.
- Turn right onto Jackson Place S.W./Monster Road S.W.
- See map for septage disposal directions
For more information about the DNRP Septage Disposal Program, please contact:
Chris Tinnin,
Building and Grounds Supervisor & Septage Coordinator
(206) 263-1821
chris.tinnin@kingcounty.gov