Public Works Documents and Agreements
Documents and Agreements
In accordance with chapter 39.34.040 of the Revised Code of Washington, all inter-governmental agreements between Thurston County Public Works and local jurisdictions are available for public inspection.
For your convenience, many Public Works documents are provided below in a .pdf format. All documents can be downloaded. If you would like more information or would like to submit a request for public information, refer to the county's Public Records Disclosure webpage. or you may call us at 360-867-2300.
The agreements are listed by the area of coverage (purchasing, services, etc) or municipality. Any amendments to, or projects covered by or falling under an ILA or MOU will be linked to or listed under the parent document.
Questions regarding these documents should be directed to Public Works Comments or call 360-867-2300.
Documents by Division
Thurston County Waste Characterization Study (2023)
Solid Waste Management Plan 2021-2026
Administrative Rules & Procedures (2024)
Solid Waste Facility Condition Assessment and Infrastructure Management Plan
Solid Waste Continuity of Operations Plan
Thurston County Flow Control FAQ
2024-2029 Transportation Improvement Program
Thurston County Road Standards
Thurston County Road Standards - Manhole Collar Detail
Grand Mound Standards Revision
Road Improvement District Information
Development Standards for Water and Sewer Systems
Thurston County Drainage, Design and Erosion Control Manual
Thurston County CADD and Civil 3D User Guidelines
Development Standards for Water and Sewer System
Water Satellite Management Plan - 1998
Satellite Management Agency / Part A Water System Plan - Draft Please forward any questions or comments to tcutilities@co.thurston.wa.us
Cross Connections Hazard Handout
Boston Harbor Water and Sewer System History and Challenges
Interlocal Agreements
Amtrak Depot Maintenance Agreement Exp.2029
Hub Maintenance Agreement with Olympia and Lacey (034-2021-035) Exp. N/A
Intercity Transit Signal Priority Agreement (034-2021-048) Exp. 2026
Department of Agriculture Interagency Agreement (034-2021-037) Exp. 2023
Department of Corrections Interagency Agreement (034-2021-020) Exp. 2025
Washington Department of Fish and Wildlife Interagency Agreement (034-2022-0069) Exp. 2024
Department of Corrections Grand Mound Wastewater Utility
Thurston County & PUD Country Club Road Agreement
Thurston County & APHIS Wildlife Services
Grays Harbor County Anti-Icing
Olympia School District Anti-Icing
Tumwater School District Anti-Icing
WA Department of Fish and Wildlife - Boston Harbor Stormwater Construction
Confederated Tribes of the Chehalis Roads Transfer Interlocal Agreement
Confederated Tribes of the Chehalis Utility Services Agreement - 02/01/2016
Confederated Tribes of the Chehalis Utility Services Supplemental Agreement - 12/11/2018
Nisqually Master Agreement for Administration of RCSP Funds (034-2021-022)
Confederated Tribes of the Chehalis Reservation Sewer, Water, Street Agreement