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  • Peirce Island Wastewater Facility Upgrade Project

Peirce Island Wastewater Facility Upgrade Project

This project is the largest that the City has undertaken. The Peirce Island Wastewater Treatment Facility (WWTF) upgrade expands treatment at the plant to an advanced secondary process which removes organics and nitrogen. Progress videos are available on our YouTube page, shown below.

Project Contact

Terry Desmarais
Terry Desmarais

Terry Desmarais

P.E, City Engineer
(603) 766-1421
tldesmarais@cityofportsmouth.com

Public Meetings

Content

Monthly public meetings with City staff, the Contractor and other officials involved in the project are typically held every third Wednesday each month at 11 a.m. in City Hall's Conference Room A or by Zoom Webinar to ensure that citizens are informed.  These meetings are available on the City’s YouTube channel, with presentations and meeting minutes available on the Wastewater Public Meetings page. 

Upcoming Meetings

Wed Mar 17

Peirce Island Wastewater Treatment Facility Public Meeting

11:00 AM
Zoom Meeting

ANTICIPATED WORK IN MARCH 2021:

Anticipated Construction Traffic Volume: Low

Work will include, but is not limited to:

  • Continue minor electrical, plumbing, and HVAC activities in the Solids Building, BAF Building, and Grit Building
  • Continue optimization of the BAF process
  • Continue architectural work for the new Operations / Lab Building
  • Continue plumbing, HVAC and electrical work for the new Operations / Lab Building

PROJECT FACTSHEET

  • Start Date: September 2016
  • BAF Substantial Completion: December 2019
  • Secondary Permit Compliance: April 2020
  • Project Substantial Completion:  Early 2021            (under review)
  • Final Completion:  Early 2021 (under review)
  • Project Construction Costs:
    • Base Contract:       $72,785,545.00
    • Change Order No. 1: $367,290.42
    • Change Order No. 2: $546,722.46
    • Change Order No. 3: $  93,838.31
    • Change Order No. 4: $162,869.20
    • Change Order No. 5: $249,828.16
    • Change Order No. 6: $292,031.11
    • Change Order No. 7: $169,138.30
    • Change Order No. 8: $112,659.75
    • Change Order No. 9: $242,419.68
    • Change Order No.10:$122,783.46
    • Change Order No.11:$138,938.61
    • Total Contract:      $75,284,064.46
  • Design Engineer: AECOM
  • General Contractor: Methuen Construction
  • Design Flow: 6.1 MGD average
  • New Treatment Processes:
    • New Headworks
    • Biologically aerated/anoxic filter (BAF) using the Kruger BioSTYR ™ technology for Secondary Treatment and Nitrogen Removal
    • Rotary screw presses for solids dewatering
    • Simplified Process Flow Schematic

NEWS & UPDATES

  • 01/03/20 - Methuen Construction Meets December 31 milestone for substantial complete of new treatment process for Peirce Island WWT Facility
  • 11/22/19 - City provides notification that Methuen Construction will not achieve December 1 milestone
  • 05/28/19 - Public tour of the Peirce Island Wastewater Treatment Facility on Thursday, June 13th
  • 07/25/18 - Public Tour of the Peirce Island Wastewater Treatment Facility on Tuesday, July 24th
  • 04/13/18 - Weekend work to continue periodically at Peirce Island Wastewater Treatment Facility
  • 02/2/18 - Weekend work to begin at Peirce Island Wastewater Treatment Facility
  • 06/28/17 - Overnight Work on Peirce Island Tonight, June 28th
  • 06/1/17 - Upcoming Night Work on Peirce Island
  • 05/4/17 - Sewer System Field Work Begins May 8, 2017
  • 05/4/17 - Construction of Four Tree Island Parking Occurring Before Pool Season
  • 04/28/17 - Revised Concrete Haul Route for Peirce Island Wastewater Treatment Facility Work
  • 04/17/17 - Peirce Island WWTF Upgrade Quarterly Update to City Council
  • Peirce Island Road Bridge Repairs Resumed 2/15/17
  • Notification of SSO due to sewer main break 2/3/17
  • 1/17/17 Aerial Video of Construction Site and Staging Areas

RECREATIONAL IMPACT ADVISORY

State Fish Pier: No restrictions – Open

Public Boat Launch: No restrictions. Open seasonally.

Four Tree Island Parking Lot: Open. 

Four Tree Island : No restrictions - Open.

Off-leash Dog Area: Closed. No dogs allowed on Peirce Island from the bridge. 

Peirce Island Outdoor Pool Access: Currently Unrestricted – Open seasonally. 

Progress Reports and Public Tour Handouts

Content
  • 2020 March: Progress Report
  • 2019 June 13:  Public Tour
  • 2018 November:  Progress Report
  • 2018 July 24:  Public Tour
  • 2018 January 26:  City Council Tour
  • 2017 October:  Progress Report
  • 2017 June:  Progress Report
  • 2017 April:  Progress Report
  • 2017 January 9:  Progress Report

Map of Project Area

Content

Map of Peirce Island Project Area

 

Designated Map of Construction Traffic Route

Content

Designated Map of Construction Traffic Route

Recorded Meetings

02.17.21 Peirce Island Wastewater Treatment Facility Public Meeting

02.17.21 Peirce Island Wastewater Treatment Facility Public Meeting

February 17, 2021

01.20.2021 Peirce Island WWTF Public Const Mtg

01.20.2021 Peirce Island WWTF Public Const Mtg

January 25, 2021

12.16.20 Peirce Island WWTF Construction Meeting

12.16.20 Peirce Island WWTF Construction Meeting

December 22, 2020

10.21.20 Peirce Island Wastewater Treatment Plant Construction Meeting

10.21.20 Peirce Island Wastewater Treatment Plant Construction Meeting

October 21, 2020

09.16.20 Peirce Island Public Meeting

09.16.20 Peirce Island Public Meeting

September 16, 2020

Go To YouTube Playlist

Aerial Videos

December 2020 - Peirce Island Aerial Video

December 2020 - Peirce Island Aerial Video

January 11, 2021

Peirce Island - November 2020 Aerial Video

Peirce Island - November 2020 Aerial Video

November 16, 2020

Peirce Island WWTF Public Construction September,  2020

Peirce Island WWTF Public Construction September, 2020

September 2, 2020

February 2020 Aerial Progress Video Peirce Island WWTF Project

February 2020 Aerial Progress Video Peirce Island WWTF Project

March 3, 2020

January 2020 Aerial Progress Video Peirce Island WWTF Project

January 2020 Aerial Progress Video Peirce Island WWTF Project

January 30, 2020

Go To YouTube Playlist
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Wastewater & Sewer

Facility
680 Peverly Hill Rd, Portsmouth, NH 03801
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(603) 427-1530

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