Government · Washington

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

King CountyIssuing agency·Washington·via a public procurement portal

18days left

Due Oct 27, 2026·Posted Oct 9, 2026

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AI takeaways

King County is procuring a pilot-scale micro-electrolysis treatment system to pretreat arsenic in industrial wastewater from the methane processing plant at Cedar Hills Regional Landfill in Washington.
Bids are due October 27, 2026 for the solicitation posted October 9, 2026, and suppliers must acknowledge Addendum 1 before submitting a response.
The pilot system is part of the overall leachate and lagoon improvements project and will pretreat the wastewater stream before it enters the leachate lagoon pretreatment system.
The experimental micro-electrolysis technology was developed by the University of Washington and designed at current scale by WSP USA.
The work includes furnishing and installing the ME reactor on a platform foundation slab and stairway foundation slab with all required anchoring, plus treatment equipment, interconnecting piping and valves, and instrumentation.
The work also includes furnishing initial bulk chemicals and media and installing site utility hookups to existing onsite power with underground and above-grade connection points.
The contractor will perform hydrostatic and leak testing as well as pre-commissioning, commissioning, inspections and final system testing after obtaining all permits necessary to perform the work.
Responses are submitted through the E-Procurement Supplier Portal, where a supplier that already submitted must acknowledge the addendum and resubmit, for this competitive sealed bid construction solicitation from King County buyer Annette Hansford.

Method: Competitive Sealed Bid
Documents: 2 files

These takeaways are AI-generated and may be incomplete or wrong. Always verify every detail against the official documents before you bid.

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Contact the buyer

Annette Hansford

ahansford@kingcounty.govEmail

Location:

Seattle, WA

Open in Maps ↗

Solicitation

300000053530060

KC001738,1

Method

Competitive Sealed Bid

Documents

Download zip

KC001738-addendum-1.pdfPDF

Preview Download

KC001738-itb-documents.zipZIP

Download

What this bid is asking for

AI-generated

Furnish and install the pilot-scale micro-electrolysis reactor, foundation slabs, treatment equipment, piping, valves and instrumentation
Provide initial bulk chemicals and media and connect the system to existing onsite power
Obtain required permits and complete hydrostatic, leak, commissioning and final system testing

Posted Scope of Work

CHRLF discharges industrial wastewater collected at the landfill to the King County publicly owned treatment works (POTW) in Renton, Washington, under Waste Discharge Permit No. 7842-04 (discharge permit), issued to the County by the King County Industrial Waste (KCIW) program. The Work includes but is not limited to the following features: 1. Obtain all permits necessary to perform the Work.

Furnish and installation of ME reactor and platform foundation slab and stairway foundation slab, including all required anchoring. 3.

Furnish and installation of pilot-scale ME treatment system equipment, interconnecting piping and valves, and instrumentation. 4. Furnish initial bulk chemicals and media.

Installation of site utility hookups to existing onsite power, including underground and above-grade connection points for the pilot system and associated installations. 6.

Hydrostatic and leak testing. 7. Pre-commissioning, commissioning, inspections, and final system testing.

Amendment: Addendum 1 has been issued. Suppliers must acknowledge all addenda before submitting a response. If a supplier has already submitted a response, they MUST log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit.

Scope, read from the documentsAI-generated

The Work includes obtaining all permits, furnishing and installing the ME reactor and platform foundation slab and stairway foundation slab with anchoring, furnishing and installing pilot-scale ME treatment equipment with interconnecting piping and valves and instrumentation, furnishing initial bulk chemicals and media, installing site utility hookups to existing onsite power including underground and above-grade connections, and performing hydrostatic and leak testing plus pre-commissioning, commissioning, inspections and final system testing for pretreatment of the methane plant wastewater stream before it enters the leachate lagoon pretreatment system.

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Questions & answers

AI-generated

What is the purpose of the pilot-scale micro-electrolysis system?

To pretreat the industrial wastewater stream from the methane processing plant prior to the stream entering the leachate lagoon pretreatment system, targeting arsenic.

What work is included in the contract?

Obtain all permits, furnish and install the ME reactor and foundation slabs with anchoring, install treatment equipment with piping, valves and instrumentation, furnish initial chemicals and media, install utility hookups to existing onsite power, and perform hydrostatic, leak, commissioning and final testing.

When are bids due?

October 27, 2026, with the solicitation posted October 9, 2026.

How must suppliers handle Addendum 1?

Suppliers must acknowledge all addenda before submitting a response, and a supplier that already submitted must log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit.

Full source recordEvery field King County published, untouched

Detail

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Open Date

Oct 9, 2026

Person Id

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Synopsis

The pilot-scale ME project, which targets arsenic in industrial wastewater from the methane processing plant located at CHRLF, is part of the overall leachate and lagoon improvements project at CHRLF. The pilot-scale ME technology and treatment system has been selected to pretreat the industrial wastewater stream from the methane processing plant prior to the stream entering the leachate lagoon pretreatment system. The experimental ME technology was developed by the University of Washington (UW) and designed at current scale by WSP USA (WSP). CHRLF discharges industrial wastewater collected at the landfill to the King County publicly owned treatment works (POTW) in Renton, Washington, under Waste Discharge Permit No. 7842-04 (discharge permit), issued to the County by the King County Industrial Waste (KCIW) program. The Work includes but is not limited to the following features: 1. Obtain all permits necessary to perform the Work. 2. Furnish and installation of ME reactor and platform foundation slab and stairway foundation slab, including all required anchoring. 3. Furnish and installation of pilot-scale ME treatment system equipment, interconnecting piping and valves, and instrumentation. 4. Furnish initial bulk chemicals and media. 5. Installation of site utility hookups to existing onsite power, including underground and above-grade connection points for the pilot system and associated installations. 6. Hydrostatic and leak testing. 7. Pre-commissioning, commissioning, inspections, and final system testing.

Buyer Name

Annette Hansford

Close Date

Oct 27, 2026

Negotiation

KC001738,1

Posting Date

Oct 9, 2026

Publish Date

Oct 9, 2026

Attachments

Count

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Offset

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Time Remaining

18 Days 4 Hours

Filter Prc BUId

300000001727151

Auction Header Id

300000053530060

Negotiation Type

Construction Solicitation

Procurement BUId

300000001727151

Attachment Count

Attachments Count

Negotiation Title

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Buyer Email Address

ahansford@kingcounty.gov

Negotiation Status

Active

Negotiation Type Id

Procurement BUName

King County

Time Remaining Order

18.18334490740740740740740740740740740741

Amendment Description

Addendum 1 has been issued. Suppliers must acknowledge all addenda before submitting a response. If a supplier has already submitted a response, they MUST log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit.

Negotiation Status Code

ACTIVE

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Open Date

Oct 9, 2026

Synopsis

Buyer Name

Annette Hansford

Close Date

Oct 27, 2026

Negotiation

KC001738,1

Posting Date

Oct 9, 2026

Publish Date

Oct 9, 2026

Time Remaining

17 Days 19 Hours

Categorized By

llm

Detail Fetched

Yes

Auction Header Id

300000053530060

Negotiation Type

Construction Solicitation

Procurement BUId

300000001727151

Attachments Count

Negotiation Title

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Negotiation Status

Active

Procurement BUName

King County

Time Remaining Order

17.82104166666666666666666666666666666667

Negotiation Status Code

ACTIVE

View official postingOpens the original King County listing in a new tab

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Government · Washington

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

King CountyIssuing agency·Washington·via a public procurement portal

18days left

Due Oct 27, 2026·Posted Oct 9, 2026

Prequalify For BondingBonding Prequal

AI takeaways

King County is procuring a pilot-scale micro-electrolysis treatment system to pretreat arsenic in industrial wastewater from the methane processing plant at Cedar Hills Regional Landfill in Washington.
Bids are due October 27, 2026 for the solicitation posted October 9, 2026, and suppliers must acknowledge Addendum 1 before submitting a response.
The pilot system is part of the overall leachate and lagoon improvements project and will pretreat the wastewater stream before it enters the leachate lagoon pretreatment system.
The experimental micro-electrolysis technology was developed by the University of Washington and designed at current scale by WSP USA.
The work includes furnishing and installing the ME reactor on a platform foundation slab and stairway foundation slab with all required anchoring, plus treatment equipment, interconnecting piping and valves, and instrumentation.
The work also includes furnishing initial bulk chemicals and media and installing site utility hookups to existing onsite power with underground and above-grade connection points.
The contractor will perform hydrostatic and leak testing as well as pre-commissioning, commissioning, inspections and final system testing after obtaining all permits necessary to perform the work.
Responses are submitted through the E-Procurement Supplier Portal, where a supplier that already submitted must acknowledge the addendum and resubmit, for this competitive sealed bid construction solicitation from King County buyer Annette Hansford.

Method: Competitive Sealed Bid
Documents: 2 files

These takeaways are AI-generated and may be incomplete or wrong. Always verify every detail against the official documents before you bid.

Want to know if you can be bonded for this project? Get prequalified.One free application, soft pull — sized to your work.

Know you can be bonded before you spend a week on the bid
No scramble for a bond at the deadline — it becomes a request form
A good guy letter to show a GC or agency

Prequalify For Bonding →

Contact the buyer

Annette Hansford

ahansford@kingcounty.govEmail

Location:

Seattle, WA

Open in Maps ↗

Solicitation

300000053530060

KC001738,1

Method

Competitive Sealed Bid

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KC001738-addendum-1.pdfPDF

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What this bid is asking for

AI-generated

Furnish and install the pilot-scale micro-electrolysis reactor, foundation slabs, treatment equipment, piping, valves and instrumentation
Provide initial bulk chemicals and media and connect the system to existing onsite power
Obtain required permits and complete hydrostatic, leak, commissioning and final system testing

Posted Scope of Work

Furnish and installation of ME reactor and platform foundation slab and stairway foundation slab, including all required anchoring. 3.

Furnish and installation of pilot-scale ME treatment system equipment, interconnecting piping and valves, and instrumentation. 4. Furnish initial bulk chemicals and media.

Installation of site utility hookups to existing onsite power, including underground and above-grade connection points for the pilot system and associated installations. 6.

Hydrostatic and leak testing. 7. Pre-commissioning, commissioning, inspections, and final system testing.

Scope, read from the documentsAI-generated

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Questions & answers

AI-generated

What is the purpose of the pilot-scale micro-electrolysis system?

To pretreat the industrial wastewater stream from the methane processing plant prior to the stream entering the leachate lagoon pretreatment system, targeting arsenic.

What work is included in the contract?

When are bids due?

October 27, 2026, with the solicitation posted October 9, 2026.

How must suppliers handle Addendum 1?

Suppliers must acknowledge all addenda before submitting a response, and a supplier that already submitted must log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit.

Full source recordEvery field King County published, untouched

Detail

@Context

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Open Date

Oct 9, 2026

Person Id

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Synopsis

Buyer Name

Annette Hansford

Close Date

Oct 27, 2026

Negotiation

KC001738,1

Posting Date

Oct 9, 2026

Publish Date

Oct 9, 2026

Attachments

Count

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Offset

Has More

Time Remaining

18 Days 4 Hours

Filter Prc BUId

300000001727151

Auction Header Id

300000053530060

Negotiation Type

Construction Solicitation

Procurement BUId

300000001727151

Attachment Count

Attachments Count

Negotiation Title

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Buyer Email Address

ahansford@kingcounty.gov

Negotiation Status

Active

Negotiation Type Id

Procurement BUName

King County

Time Remaining Order

18.18334490740740740740740740740740740741

Amendment Description

Negotiation Status Code

ACTIVE

@Context

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300000053530060,300000001727151

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Name: supplierNegotiationAmendments

Open Date

Oct 9, 2026

Synopsis

Buyer Name

Annette Hansford

Close Date

Oct 27, 2026

Negotiation

KC001738,1

Posting Date

Oct 9, 2026

Publish Date

Oct 9, 2026

Time Remaining

17 Days 19 Hours

Categorized By

llm

Detail Fetched

Yes

Auction Header Id

300000053530060

Negotiation Type

Construction Solicitation

Procurement BUId

300000001727151

Attachments Count

Negotiation Title

Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Negotiation Status

Active

Procurement BUName

King County

Time Remaining Order

17.82104166666666666666666666666666666667

Negotiation Status Code

ACTIVE

View official postingOpens the original King County listing in a new tab

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Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Documents

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What this bid is asking for

Posted Scope of Work

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Cedar Hills Regional Landfill Pilot-Scale Micro-Electrolysis

Documents

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What this bid is asking for

Posted Scope of Work

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Questions & answers

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