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Jan
18

MWPAAC engineering and planning

The Engineering and Planning subcommittee meets the first Thursday of each month.

The Engineering & Planning Subcommittee makes recommendations to WTD on scope of comprehensive system planning efforts such as the Regional Wastewater Services Plan, WTD policies, and future amendments thereto. The subcommittee also reviews implementation plans such as operational master plan updates, asset management plans and conveyance system improvement updates.

Select year below to view meeting materials.

Subcommittee meetings:

First Thursdays
8:30 a.m. – 10:00 a.m.

See 2025 Meeting Calendar for dates. Meetings held online (see meeting agendas for link).

Meeting materials

Below is a listing of meeting agendas, presentations, meeting summaries, and speakers' information from the MWPAAC meetings. 

List of commonly used acronyms in the King County Wastewater Treatment Division

2025 meetings

Meeting Documents
January 16, 2025 Visit Virtual WTD University for presentations.
February 6, 2025 Agenda, Summary
March 6, 2025 Agenda, Summary
April 3, 2025 Agenda, Summary
May 1, 2025 Agenda, Summary
June 5, 2025 Agenda, Summary
July 2025 No meeting (field trip)
August 7, 2025 Agenda, Summary
September 4, 2025 Agenda, Summary
October 2, 2025 Agenda, Summary
November 6, 2025 Agenda, Summary
December 4, 2025 Agenda, Summary

2024 meetings

Meeting Documents
January 2024 No meeting
February 1, 2024 Agenda, Summary, Long-term Capital Needs Methodology Recommendation, Preliminary 2025 Rate-setting Policy Direction and Operational and Capital Investments
March 7, 2024 Agenda, Summary, Nutrients update, Biosolids update
April 4, 2024 Agenda, Summary, IW 101 presentation for MWPAAC
May 2, 2024 Agenda, Summary, Infiltration & Inflow (I/I) Program Update
June 6, 2024 Agenda, Summary, PFAS and Contaminants of Emerging Concern
July 2024 No meeting
August 1, 2024 Agenda, Summary, City of Renton/King County Wastewater Treatment Division (WTD) Reclaimed Water Feasibility Study, Combined Sewer Overflow Consent Decree Modification
September 5, 2024 Agenda, Summary
October 3, 2024 Agenda, Summary, Conveyance System Improvement Planning Assumption Updates
November 7, 2024 Agenda, Summary, Regional Wastewater Services Plan (RWSP) – Scoping and Comment Matrix, DRAFT Scoping Document for Updating the RWSP, RWSP Update Scoping Document Comments, RWSP – Discussion of Draft Early Code Updates, Working Draft Early Code Updates
December 5, 2024 Agenda, Summary, 2020 Decennial Flow Monitoring Update and Next Steps, Puget Sound Nutrients Briefing

2023 meetings

Meeting Documents
January 5, 2023 Agenda, Summary, Asset Management Update – The Life of an Asset
February 2, 2023 Agenda, Summary, Forecasting the Wastewater Treatment Division
(WTD) Capital Improvement Program (CIP)
March 7, 2023 Agenda, Summary, Asset Management Tier 1 Projects
April 6, 2023 Agenda, Summary, 2024 Sewer Rate Capital Projection, Conveyance System Improvement (CSI) Program Update Status
May 4, 2023 Agenda, Summary, Seattle Public Utilities (SPU) Inflow and Influent (I/I) Program, Part 2
June 1, 2023 Agenda, Summary, Class A Biosolids Ordinance, NPDES West Point Permit Discussion
July 2023 No meeting
August 3, 2023 Agenda, Summary, SPU’s Wastewater Source Control Programs
September 7, 2023 Agenda, Summary, Long-term Capital Needs Forecast
October 5, 2023 Meeting canceled
November 2, 2023 Agenda, Summary, Rate-Setting 101
December 7, 2023 Agenda, Summary, Long-term Rate and Capital Planning Study

2022 meetings

Meeting Documents
January 6, 2022 Agenda, Summary, Capital Projects – Coal Creek, Nutrients Update
February 3, 2022 Agenda, Summary, Capital Projects Update
March 3, 2022 Agenda, Summary, Infiltration and Inflow (I/I) Reduction Discussion
April 7, 2022 Agenda, No Summary
May 5, 2022 Agenda, Summary, Co-Digestion Project Update
June 2, 2022 Agenda, Summary, Work Plan Discussion (June 2022 - May 2023) V2, Work Plan Poll Spring 2022, 2022 Work Plan, Resource Recovery Section Updates
July 2022 No meeting
August 4, 2022 No meeting
September 1, 2022 Agenda, Summary, Energy Efficiency
October 6, 2022 Agenda, Summary, 2020 Decennial Flow Monitoring (DFM) & Data Finalization, Sammamish Plateau WSD North Sewer Service Area I&I Investigation
November 3, 2022 Agenda, Summary
December 1, 2022 Agenda, Summary, Seattle Public Utilities (SPU) Inflow and Influent (I/I) Program

2021 meetings

 

Meeting Documents

January 7, 2021

Agenda, Summary, WTD Reports and Provisos 2021, Excerpt from King County Biennial Budget Ordinance 19210 – 2021/2022 Biennial Budget, Evaluation of Emerging Wastewater Treatment Technologies

February 4, 2021

Agenda, Summary, Asset Management – Conveyance, Legislation: WAWARN Agreement

March 4, 2021

Agenda, Summary, I/I Control Program – MWPAAC I/I Taskforce Recommendation on Regional Best Management Practices, Evaluation of I/I Reduction Concepts Phase 2, Nutrients Draft Permit Update and Public Outreach Handout

April 1, 2021

Agenda, Summary, Asset Management – Condition Monitoring Program, Inflow and Infiltration Control Program – E&P Subcommittee Recommendation on Regional Best Management Practices, Questions for Inflow/Infiltration Best Management Practices Presentation

May 6, 2021

No meeting

June 3, 2021

Agenda, Summary, 2020 Decennial Flow Monitoring Interim Update, Reclaimed Water Update

July 1, 2021

No meeting

August 5, 2021

Agenda, Summary, Wastewater Effluent Discharge Assessment - Impact to Marine Organisms, Regional Inspector Training and Certification Program Development - Infiltration and Inflow Control Program

September 2, 2021

Agenda, Summary, Regional Infiltration and Inflow (I/I) Program Inspector Training and Certification Program Concept Development Discussion

October 7, 2021

Agenda, Summary (no summary to post), Capital Projects – Georgetown Wet Weather Treatment Station, Regional Infiltration and Inflow (I/I) Program Inspector Training and Certification Program

November 4, 2021

Agenda, Summary, Regional Infiltration and Inflow (I/I) Program Inspector Training and Certification Program Presentation

December 2, 2021

Agenda, Summary, Clean Water Plan Updates, Capital Projects – North Mercer Island and Enatai Interceptors Upgrade Project, Regional Infiltration and Inflow (I/I) Program Inspector Training and Certification Program – Potential Recommendation Discussion

2020 meetings

 

Meeting Documents

February 6, 2020

Agenda, Summary

March 5, 2020

No meeting held

April 2, 2020

Agenda, Summary, WTD’s Priority Asset Management Needs, Effects of Toxics on the Sound: Sampling Proposal for Upcoming Proviso Report

May 7, 2020

Agenda, Summary, Kenmore Interceptor Proviso Response, Treatment Plant Flows and Loadings Study and Report

June 4, 2020

Agenda, Summary, Asset Management History, SEPA Scoping Comment, I/I Program Control Status Update

August 6, 2020

Agenda, Summary, Biosolids Proviso Response

September 3, 2020

Agenda, Summary, Sewer Heat Recovery, Brightwater Treatment Plant Asset Management

October 1, 2020

Agenda, Summary, Asset Management - South Plant, LPA Program Update

November 5, 2020

Agenda, Summary, I/I Control Program – Status of Regional BMPs

December 3, 2020

Agenda, Summary, Asset Management – West Point, I/I Control Program Review and Status Update, Nutrients Management Update
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