Projects

CONSTRUCTION

Peirce Island Wastewater Treatment Facility Upgrade Project 

The City’s Peirce Island Wastewater Treatment Facility is undergoing an upgrade. This project will convert the existing primary treatment facility to a secondary treatment facility with the ability to remove nitrogen. The project began in September 2016 and will continue through 2020. Details on the construction schedule and aerial photographs and videos of the construction can be seen by Clicking Here

Pease Wastewater Treatment Facility Project (Headworks)

A new headworks facility is currently under construction at the Pease Wastewater Treatment Facility.  The function of this facility is to provide preliminary treatment designed to remove rags, debris, and grit from the wastewater before it enters subsequent phases of treatment.  The facility consists of automatic screening equipment, new electrical controls, and four new raw wastewater pumps.  Other facilities improvements part of this project include the addition of two new carbon odor control scrubbers that will treat foul air removed from the new headworks building, sludge processing areas, septage receiving system, and primary clarifiers. This work is nearing completion and is anticipated for startup in the spring of 2020.

 

Pease   

Project FactSheet
Project Status  Under Construction
Start Date   June 2018
Completion Date  Summer 2020
Contractor  Methuen Construction

 

UPCOMING PROJECTS

Fleet Street Reconstruction 

This project includes the reconstruction of Fleet Street from Hanover Street to Court Street. This work will include roadway reconstruction, replacement of sidewalks, utility work including new storm drains, sanitary sewers, and water mains. The planning for this work will include planning for utility corridors and sewer separation in the Fleet Street area extending to Market Square and to Maplewood Avenue. 

Project FactSheet
Project Status  Preliminary Design
Designer  Underwood Engineers, Inc.
City Staff Contact  Ryan Flynn, Construction Project Coordinator
 (603) 766-1413
 raflynn@cityofportsmouth.com

 

Union Street Reconstruction

This project includes the reconstruction of Union Street from State Street to Middle Street. This project is part of the City’s continued sewer separation to reduce combined sewer overflows. The work will include roadway reconstruction, replacement of sidewalks, utility work including new storm drains, separate sanitary sewers, and water mains. The planning for this work will include an evaluation of the alignment for new drainage down Middle Street. This will provide an outlet for the stormwater discharge.

Project FactSheet
Project Status  Preliminary Design Phase Engineering Services RFP
Designer  TBD
City Staff Contact  Zachary Cronin, Assistant City Engineer
 (603) 610-7304
 zmcronin@cityofportsmouth.com

 

Sagamore Avenue Sewer Extension Project

In accordance with a September 2016 Peirce Island WWTF Consent Decree the City has begun planning a "2.5 million sewer extension project to provide public sewer service to approximately 83 existing parcels adjacent to our near Sagamore avenue, as depicted in the February 2011 Wright Pierce figure titled "Town of Portsmouth, New Hampshire Sagamore Ave South Sewer Extension Study, Low Pressure Sewer," with the intent to improve water quality at Sagamore Creek."  The Consent Decree signed in September 2016 states that "Planning, design and other pre-construction activities for the project shall be completed prior to substantial completion of the Peirce Island WWTF upgrade project.  For the Sagamore Avenue Sewer Extension Project webpage, click here.

Project FactSheet
Project Status  Final Design
Designer  Wright Pierce Engineering
City Staff Contact  Zachary Cronin, Assistant City Engineer
 (603) 610-7304    zmcronin@cityofportsmouth.com

 

Heritage Avenue Pumping Station

The City's Heritage Avenue Pumping Station is a small wastewater pumping station that is in need of an upgrade. The upgrade will replace equipment that has outlived its service life and address safety issues with the pumping station.

Project FactSheet
Project Status  Design
Designer  Wright Pierce Engineering
City Staff Contact  Zachary Cronin, Assistant City Engineer
 (603) 610-7304
 zmcronin@cityofportsmouth.com

 

Contract 1 Sewer Rehabilitation

The City is utilizing data collected from the sewer system infiltration/inflow study to rehabilitate sections of the sewer infrastructure. This work will focus on areas the study found to have excessive infiltration to lessen the amount of groundwater entering the sewer collection system. Infiltration is groundwater that enters the sewer system through leaking manholes and cracked or damaged pipe and inflow is both stormwater and groundwater that enters the sewer system through direct connections such as sump pumps, basement drains, yard drains, catch basins, and rooftop drains. The majority of construction will take place from inside the pipes and manholes (considered “trenchless construction”).

Project FactSheet
Project Status  Preliminary Design Phase
Designer  Woodard & Curran
City Staff Contact  Zachary Cronin, Assistant City Engineer
 (603) 610-7304
 zmcronin@cityofportsmouth.com