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Massachusetts Water Resources Authority
PROJECT UPDATE

Date:

Updated June 1, 2018

Contact:

Jeffrey McLaughlin
(617) 305-5762, Jeffrey.McLaughlin@mwra.com


Update for MWRA Alewife Brook Pump Station
Rehabilitation Project
(MWRA Contract 6797)

MWRA's Alewife Brook Pump Station in Somerville was constructed in 1951
and serves portions of Arlington, Belmont, Cambridge, Medford and Somerville.

MWRA CCR Cover

About this Project:

The Alewife Brook Pump Station Rehabilitation Project (MWRA Contract 6797) will improve the operating capacity and reliability of a sewer station that pumps wastewater flows from Arlington, Belmont, Cambridge, Medford and Somerville through the North Metropolitan and North Metropolitan Relief Sewers toward the Deer Island Treatment Plant.

A First in Climate Change Resilience:

The rehabilitation of the Alewife Brook Pump Station is the first MWRA project to incorporate new measures to protect equipment and facilities from the affects of potential climate change. This project is important step in MWRA's long-term efforts to protect the sewer system's overall ability to operate during wet weather events and to recover from them.

The Alewife Brook Sewer Rehabilitation Project will provide flood
protection for a potential 2.5-foot surge above the 100-year flood elevation.

Work in Somerville:

Under MWRA Contract 6797, MWRA's contractor, Barletta Engineering Corporation, will make major operational and structural improvements to the Alewife Brook Pump Station.

Existing sewer pumps, original to the 1951 station, no longer operate with as-designed efficiency. They will be replaced by two, higher-capacity wet-weather pumps and a dry-weather pump, with a third wet-weather pump available for standby use.

Other operational improvements include the replacement of motors, gear drives, controls, screens, sluice gates and generators.

The Alewife Brook Pump station's HVAC systems, paint, roofing and insulation will also be updated and new flow meter will be installed on the Alewife Brook Conduit.

MWRA Contact:

If you have any questions please email Jeff McLaughlin or call (617) 305-5762.

To receive electronic project updates, please register your email address with the MWRA Alerts Service, provided through Everbridge.

Updates

June 1, 2018

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Work update:

  • Began Installation of Supports for Grating
  • Installed Switch Gear/VFDs on Grating Supports
  • Installed Air Handling Unit
  • Cut Opening in Wall Between Screen Room and Operating Room
  • Installed Structural Supports for Opening
structural support

Installation of structural support for grating and equipment

switchgear

Installation of switchgear for new pumps

ceiling tiles

Installation of ceiling tiles in screen room

hand operated gates

Installation of hand operated gates in the screen channels

hvac duct work

Insulated HVAC duct work

electrical raceways

Electrical raceways in operating room

MWRA asbestos removal

Start of asbestos removal

MWRA asbestos removal

Asbestos removal

MWRA asbestos removal

Asbestos removal

May 3, 2018

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Work update:

  • Completed installation of fire rated plywood base for ceiling tiles in operating room and screen room
  • Installed ceiling tiles in operating room
  • Began installation of duct bank behind the pump station
  • Began installation of ductwork and electrical raceways in the operating room
  • Began installation of heating return and supply lines
  • Painted beams in screen room and operating room
  • Painted crane in screen room.

Upcoming work:

  • Finish installation of ceiling in screen room
  • Continue rough piping for electrical work
  • Continue installation of HVAC equipment
  • Complete installation of hand operated sluice gates
  • Installation of interior water and gas piping
  • Asbestos abatement at roof
  • Begin installation of new roof and wastewater pumps
progress image

Operating room before ceiling tile installation

progress image

Operating room with cling tiles installed

progress image

Electrical conduits

progress image

Pouring concrete slabs for equipment

April 20, 2018

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Work update:

  • Continued to operate bypass system
  • Primed ceilings, beams and walls
  • Installed framing for ceiling tiles
  • Applied spray foam insulation to the ceiling
  • Began installation of plywood base for ceiling tiles
  • Placed grout in stop log grooves for sluice gate installation
  • Removed generator from generator room.

Upcoming work:

  • Finish Installation of ceiling on operating level and in screen room
  • Apply first coat of finish paint to beams on operating level and in screen room
  • Begin installation of sluice gates
  • Take delivery of new generator
  • Miscellaneous electrical work
  • Placed grout in stop log grooves for sluice gate installation
  • Miscellaneous HVAC work.
Project image workers
project image ceiling
project image ceiling

Ceiling Installation

March 6, 2018

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Completed work to date:

  • Continued to operate bypass system
  • Completed PCB abatement of Screen Room
  • Completed PCB Abatement of Upper Pump Room
  • Modified concrete floor to allow for installation of new screens
  • Began installation of the new screens.
  • Completed transfer of power to temporary power source.

Upcoming work:

  • Finish installing screens
  • Prime ceiling in screen room
  • Prime Beams in screen room
  • Begin installation of ceiling framing
  • Begin installation of sluice gates
  • Miscellaneous electrical work

Construction Photos:

MWRA PCB abatement

PCB abatement

MWRA Screen installation
MWRA Screen installation

Screen installation

For more information, please contact Jeff McLaughlin at (617) 305-5762.

02/14/18

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Completed work to date:

  • Completed Installation of Bypass System
  • Tested Bypass System
  • Bypass Pump System placed in service January 2, 2018
  • 2 storms since bypass went into service (January 12/13 and January 23)
  • Completed PCB Abatement of Lower Level
  • Completed PCB abatement of Generator Room
  • Began PCB abatement of Screen Ro
  • Performed routine maintenance on bypass pump system
  • Completed demolition of screens
  • Began demolition of pumps and piping
  • Began demolition of electrical and scada equipment
  • Completed gas service installation to building

Upcoming work:

  • Complete PCB removal
  • Continue demolition of mechanical and electrical equipment
  • Transfer necessary lighting and heating to temporary power source
  • Continue operation and maintenance of bypass pumping system

Construction Photos:

progress photo
progress photo
progress photo
progress photo
progress photo

For more information, please contact Jeff McLaughlin at (617) 305-5762.

10/13/17

Construction Photos

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abatement

New haybales at Alewife

electrical

Re-assembly of piping

For more information, please contact Jeff McLaughlin at (617) 305-5762.

July, 2017

Construction Photos

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abatement

PCB abatement

electrical

Delivery of electrical components to site

demolition

Demolition of the boiler room

For more information, please contact Jeff McLaughlin at (617) 305-5762.

June 12, 2017

Construction Update

 Work accomplished: June 2017

  • Installed temporary sewerage bypass pumps and piping around perimeter of facility

  • Working on removal of PCB paint inside facility

Future Work:

  • Continue PCB Abatement inside facility

  • Installation of new gas line across Alewife Brook Parkway

Aerial shot of sewerage bypass system

Aerial shot of sewerage bypass system

Sign up for electronic project notifications and updates through our Everbridge service.

If you have any questions please email Jeff McLaughlin or call (617) 305-5762.

March 10, 2017

In order to complete new exterior and interior renovations to the Alewife Brook Pumping Station, it is necessary to ‘by-pass’ the pump station for a period of a year. This is accomplished with pumps and piping outside the building to reroute flows while maintaining normal pumping and flow capacity for the residents of Somerville, Cambridge and Arlington.

Design, preparation and contingency planning for this process are complete and mobilization of the pumps and installation of the ‘by-pass’ has begun. It is currently anticipated that the bypass system will be operation by the end of March 2017.

August 16, 2017

Work began in August, 2016.

If you have any questions please email Jeff McLaughlin or call (617) 305-5762.


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