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New Project Update
Mohawk Tannery Remediation Update – Q4 2025 & Q1 2026
Work has accelerated at the Mohawk Tannery site from December 2025 through April 2026, with major site preparation, sludge excavation, and early containment system construction now underway.
May 12, 2026
Blaylock Holdings, LLC — a Thorndike Development and Wincrest Properties partnership — is leading a comprehensive environmental cleanup of the 40-acre Mohawk Tannery site in Nashua, NH. Working under an EPA and NH DES–approved Removal Action, the team will excavate, consolidate, and encapsulate more than 90,000 cubic yards of sludge and contaminated soils, restoring a long-polluted industrial property and advancing one of the most significant remediation efforts in the city’s history.
Located just minutes from downtown Nashua off Exit 6 on Route 3, the site occupies a prominent stretch of the scenic Nashua River, underscoring the importance of this work. The remediation will lay the foundation for transforming the property into a renewed riverfront neighborhood, opening long-closed waterfront to the public and setting the stage for future homes, amenities, and community connection.
Update – Q4 2025 & Q1 2026
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Aerial view of active excavation showing the development of access roads and the necessary work areas
Project Site Manager Michael Paonessa inspects Air Monitoring Station near the Fairmount St Gate (which is no longer used by Construction as all vehicles enter via the Parkway)
Concrete being pumped into the guide wall for the eventual containment system to be built above the 500-year flood zone
Excavation and movement of soils will progress into spring 2026 reshaping the land for eventual development
Groundbreaking
NH Governor Kelly Ayotte, born and raised in Nashua, gives remarks commemorating the results of many years of effort of the public and private teams formed to finance, clean up and create much needed housing at the former Mohawk site.
A full house of federal, state, local, and private leaders listened to remarks of the Groundbreaking. Included in this photo are James Key Wallace of the NH Business Finance Authority, Jay Minkarah of the Nashua Regional Planning Council, Bob Delhome and Rob Callahan leaders of Charter Contracting Company, Dan Hudson City Engineer, and various consultants of the remediation design team.
Key leaders of the public and private partnership commemorate the beginning of the cleanup. From left to right are Blaylock Managers Bernie Plante and Lloyd Geisinger, NH Governor Kelly Ayotte, EPA Region 1 Administrator Mark Sanborn, and Nashua Mayor Jim Donchess.
Members of the joint Blaylock and City of Nashua team. The City of Nashua dedicated a core group of city staff leaders to work with the Blaylock team in creating the necessary legislation and agreements for the Redevelopment of the former Mohawk site into 546 homes including multiple public amenities.
The future community will include For-Sale Condominiums and Rental Apartments designed with a pedestrian friendly streetscape, direct entry flats, and a landscape which connects the homes into a vibrant neighborhood.
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The pedestrian friendly neighborhood will have buildings with terraces and multiple walking paths building the homes into an interconnected neighborhood featuring multiple public amenities.
The pedestrian friendly neighborhood will have buildings with terraces and multiple walking paths building the homes into an interconnected neighborhood featuring multiple public amenities
The remediation design will place a permanent impermeable cap on the containment cell allowing for passive recreation on an open meadow with walking paths, benches featuring views across the river, a dog park, and a pedestrian bridge to the 325-acre Mine Falls Park.
The community will include a new riverwalk which will be bookended by the canoe/kayak launch and a pedestrian bridge over the river to Mine Falls Park (a vision of the City’s dating back to the 1970s).
The new housing and public amenities will turn a long-blighted site into a vibrant neighborhood connected to the greater Nashua community in a landmark transformation securing much needed housing and generating significant tax revenues.
Issues, concerns, or curiosities should be directed to:
Agency Oversight Contacts (for the Removal Action only):
In case of emergency always dial 911
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