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City of Port St. Lucie header
File #: 2025-1117    Version: 1 Name:
Type: Consent Status: Consent
File created: 11/7/2025 In control: City Council
On agenda: 11/24/2025 Final action:
Title: Approve Amendment #11 to Contract #20170132 for Design Services for the Westport Wastewater Treatment Plant Expansion.
Attachments: 1. Amendment_#11 - signed., 2. Amendment #10., 3. Amendment #9., 4. Amendment #8., 5. Amendment #7., 6. Amendment #6., 7. Amendment #5., 8. Amendment #4., 9. Amendment #3., 10. Amendment #2., 11. Amendment #1., 12. Original Contract.
Date Ver.Action ByActionResultAction DetailsMeeting DetailsVideo
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Placement: Consent Agenda
Action Requested: Motion / Vote
title
Approve Amendment #11 to Contract #20170132 for Design Services for the Westport Wastewater Treatment Plant Expansion.
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Submitted By: Robyn Holder, CPPB, Procurement Management Division (PMD).

Strategic Plan Link: The City's Goal of high-quality infrastructure and facilities.

Summary Brief (Agreements/Contracts only)
1. Prepared by: Robyn Holder, CPPB (PMD).
2. Parties: City of Port St. Lucie and CHA Consulting, Inc. fka Reiss Engineering, Inc.
3. Purpose: To assist the City in meeting wastewater treatment standards mandated by the Florida Department of Environmental Protection (FDEP).
4. New/Renewal/Modified: Modified.
5. Duration: Contract Expiration remains on October 11, 2026.
6. Benefits to Port St. Lucie: Reducing nitrogen and phosphorus from effluent water, through high quality treatment, will result in a reduced growth of algae, improved water quality in general, and will reduce any negative effects on the St. Lucie River.
7. Cost to Port St. Lucie (Annual and Potential): An additional $279,903.75 for a new Contract amount of $7,127,342.60.

Presentation Information: N/A.

Staff Recommendation: Move that the Council approve Amendment #11 to Contract #20170132 for Design Services for the Westport Wastewater Treatment Plant Expansion with CHA Consulting, Inc. fka Reiss Engineering, Inc.

Alternate Recommendations:
1. Move that the Council amend the recommendation and approve Amendment #11 to Contract #20170132.
2. Move that the Council not approve Amendment #11 to Contract #20170132 and provide staff with direction.

Background: The Westport Wastewater Treatment Facility is permitted to treat up to 6.0 million gallons per day (MGD) of wastewater using biological processes that meet secondary treatment standards of 20 mg/L for both Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS), with no current limits for Total Nitrogen (TN) or Phosphorus (P).

However, new nut...

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