PROFESSIONAL_SERVICESAMENDED

Auburn Expands Trihydro MS4 Compliance Contract

The City of Auburn approved Amendment No. 8 with Trihydro Corporation for MS4 compliance services. The amendment adds $110,000 and raises the not-to-exceed amount to $456,397 for stormwater mapping, monitoring, and compliance work through September 2027.

Document date · August 24, 2026

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Scope & details

The full contract record, as filed.

Contract amount
Additional $110,000; new not to exceed $456,397.00
Contract type
PROFESSIONAL_SERVICES
Contract term
August 2026 through September 2027; approximately 13 months
Renewal date
2027-09-30
Renewal
Amendment No. 8 updates the existing Professional Services Agreement dated May 11, 2021 (Contract 2021-14). The amendment raises the maximum amount to $456,397.00 and extends work through September 2027.
Document type
StaffReport
Source document
City of Auburn StaffReport Amendment No. 8 to Professional Services Agreement with Trihydro Corporation for MS4 Compliance Services 2026-08-24

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Frequently asked questions

Common questions about this contract, answered from the record.

Who was awarded the professional services contract by City of Auburn?

Trihydro Corporation was awarded this professional services contract by City of Auburn, as recorded on August 24, 2026. The contract value is Additional $110,000; new not to exceed $456,397.00.

How much is the Trihydro Corporation contract with City of Auburn worth?

The Trihydro Corporation contract with City of Auburn is valued at Additional $110,000; new not to exceed $456,397.00, covering professional services work.

What type of contract is this?

This is a Professional Services contract, documented as a staffreport record, structured as a not-to-exceed (ceiling) agreement.

Where was this contract approved?

This contract appears in City of Auburn StaffReport Amendment No. 8 to Professional Services Agreement with Trihydro Corporation for MS4 Compliance Services 2026-08-24 (StaffReport), dated August 24, 2026 from City of Auburn. Civic IQ extracts contract records directly from agency meeting documents and solicitations.

What other contracts does Trihydro Corporation hold?

Trihydro Corporation may hold additional government contracts. View their full contract history, the agencies they serve, and total tracked spend on their Civic IQ vendor profile.

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