MEPA Review


Smart Growth & Regional Collaboration

What is MEPA?

Established as state law in the late 1970s, the Massachusetts Environmental Policy Act (MEPA) is a uniform system of environmental impact review with the intent to reduce the potential for harm to the environment from certain development and transportation projects.

The intent of MEPA review is to inform project applicants and state agencies of potential adverse environmental impacts while a proposal is still in the planning stages. The developer and all relevant state agencies are required to identify any aspects of a proposed project that may necessitate additional description or analysis prior to the issuance of a Certificate and Section 61 Findings by the Executive Office of Energy and Environmental Affairs.

MEPA also requires developing enforceable mitigation commitments, which will become permit conditions for the project. As part of the public review process, MAPC submits comment letters for projects considered to be of significant regional impact.


Suffolk Downs Redevelopment

Construct a mixed-use development of 16.5 million square feet at the former Suffolk Downs horse racing facility. Of the 161 acres that make up the project, approximately 109 are in Boston and approximately 52 are in Revere.

Draft Environmental Impact Report


New Patriots Stadium and Related Infrastructure Project

The Notice of Project Change outlines an MBTA Commuter Rail Pilot Program which will establish regular public transportation to the site, new land acquisitions, game day parking modifications, and dedicated soccer training facilities at Gillette Stadium in Foxborough.

Notice of Project Change


NEXUS at the Allston Innovation Corridor

Construct approximately 539,400 square feet of research and development/office space, 21,100 square feet of ground floor retail space, 40 residential units, and 1,900 square feet of civic space on two parcels with a combined site area of approximately 4.29 acres. The project proposes a total of 884 parking spaces.

Environmental Notification Form

Hood Park Master Plan

Construct a mixed-use development of 1.7 million square feet. Located on a 19.92-acre site on the west side of Rutherford Avenue between D Street and Bunker Hill Industrial Park in Charlestown, the Project is located within walking distance from the MBTA Orange Line Sullivan Square and Community College Stations and multiple MBTA bus routes. The Project proposes a total of 1,765 parking spaces.

Draft Environmental Impact Report

Environmental Notification Form

I-90 Allston Interchange Project

Replace the existing I-90 Allston Interchange, reconstruct the roads connecting to the interchange, move I-90 closer to the existing Worcester-Framingham Commuter Rail Line, add rail layover storage, build a West Station on the Worcester-Framingham Line, and address the deteriorated I-90 viaduct (the Project). The location of the Project is the area of the former Beacon Park Yard (BPY), historically a rail yard, a portion of which was partially utilized to construct the Massachusetts Turnpike, the original Allston interchange, and toll plazas.

Draft Environmental Impact Report


Suffolk Downs Redevelopment

Construct a mixed-use development of 16.5 million square feet at the former Suffolk Downs horse racing facility. Of the 161 acres that make up the project, approximately 109 are in Boston and approximately 52 are in Revere. Full-build out of the site is anticipated to occur over a period of 15-20 years. A Phase 1 Waiver has been requested which will allow the developer to proceed with the construction of two office buildings (520,000 square feet) and 520 structured parking spaces prior to completing the MEPA process for the entire project.

Expanded Environmental Notification Form



Construct a mixed-use development of 1.5 million square feet comprised of five buildings surrounding 48,000 square feet of central open space. Located on a 9.38-acre lot on the outer edge of Assembly Row, the Project is located within a 5-minute walking distance from the MBTA Assembly Square Orange Line Station and multiple MBTA bus routes. The Project proposes a total of 1,670 parking spaces.

Final Environmental Impact Report

Draft Environment Impact Report

Union Square Redevelopment

Construct a mixed-use transit-oriented development of 2.4 million square feet (sf) in Somerville’s Union Square neighborhood. The development program includes 1.15 million sf of office/lab space, 140,000 sf of retail space, a 93,000-sf hotel, 74,000 sf of arts/creative space, and up to 998 residential units. When complete, the project will include a maximum of 1,500 parking spaces and is forecast to generate 9,770 average daily trips. A Phase 1 Waiver has been requested which will allow the developer to proceed with the construction of 607,000 sf of development. Specifically the Phase 1 Waiver would comprise 166,000 sf of office/lab space, 29,000 sf of retail space, and 450 residential units. The Phase 1 Project will include 290 parking spaces and is forecast to generate 2,100 average daily trips. The Project will be adjacent to the Green Line Extension.

Environmental Notification Form


Medford & Somerville

MBTA Green Line Extension

Further extend the Green Line, which covers the one-mile extension of the Green Line along the MBTA Lowell Line commuter rail right-of-way from College Avenue in Medford to a new terminus of the extension at Route 16/Mystic Valley Parkway on the border of Medford and Somerville.

Notice of Project Change


Oak Grove Area Urban Renewal Plan

Designate an Oak Grove Urban Renewal Area which would comprise 82.2 acres and 11 lots for disposition. The lots are proposed to contain an anticipated 35 new buildings providing a mix of uses (office, hotel, retail, industrial, research & development, and restaurant). Approximately 110 new apartment or townhouse dwelling units are also proposed. Not including the apartment or townhouse dwelling units, the Urban Renewal Plan (URP) indicates a maximum build-out potential of 467,000 square feet. According to a preliminary build-out analysis, there would be 2,617 parking spaces and 13,990 new vehicle trips generated on an average weekday.

Environmental Notification Form


Needham Street Redevelopment

Redevelop a 28.7-acre site located along Needham Street in Newton. The Needham Street Redevelopment includes a mixed-use building program of approximately 1.4 million square feet of development, including the retention of an historic 172,000 sf mill building that was previously converted to office space. Approximately 372,000 sf of commercial space will be provided for restaurant, retail, and office uses. An estimated 865 housing units are proposed, 173 (20 percent) of which will be affordable. The project proposes 1,124 new parking spaces, resulting in a total parking supply of 2,250 parking spaces, which will be provided in a combination of on-street parking, surface lots, and structured parking. The new development is expected to add 4,521 daily vehicle trips to the site for a total of 12,548 daily vehicle trips.

Environmental Notification Form


North Quincy Station Redevelopment Project

Construct a mixed-use development consisting of approximately 610 residential units, a 45,000 square foot supermarket, 5,000 square feet of retail space, and 1,600 parking spaces adjacent to North Quincy Station.

Draft Environmental Impact Report

Environmental Notification Form - 2016


1265 Main Street

The second of a two phase development of the 94.4 acre former Polaroid Campus located on Main Street (Route 117), this mixed-use project (office, retail, restaurant, service, health/wellness uses, and an alternate residential component) will comprise a total of 1.83 million square feet.

Final Environmental Impact Report

Draft Environmental Impact Report - 2016

Weymouth, Rockland, Abington

Union Point

Mixed-use redevelopment project comprising 8 million square feet of commercial space, 3,855 housing units, and between 19,500 and 43,900 parking spaces. Primary land uses include office, life sciences, hi-tech manufacturing, manufacturing, retail, a conference center, and a 285-room hotel. A 15,000 seat space sports stadium is also considered as part of this project.

Notice of Project Change – November 2017

Environmental Notification Form – April 2017


Ashland Rail Transit Apartments

A 398 unit apartment project in 9 buildings (comprising a total of 408,500 square feet). The project is on an approximate 29 acre site about one-third of a mile from the Ashland MBTA commuter rail station.

Environmental Notification Form


South Station Air Rights

Develop an approximate 8.3 acre site bounded generally by Atlantic Avenue to the west and the United States Postal Service to the east. The mixed-use project (office, residential, and hotel) will comprise a total 2.52 million square feet proposed to be constructed in three phases.

Notice of Project Change

South Station Expansion

The purpose of the South Station Expansion project is to expand rail capacity and related layover capacity in order to meet current and future high-speed, intercity, and commuter rail service needs. This project will also reopen Dorchester Avenue and extend the Harborwalk.

Final Environmental Impact Report

115 Winthrop Square

Construct a mixed-use building that will include approximately 1.1 to 1.5 million square feet. The project is located on an approximate 47,962 square foot site bounded generally by Summer Street to the south, Federal Street to the east, and Devonshire Street to the west.

Environmental Notification Form


Kendall Square Urban Renewal Project Amendment No. 10

The Cambridge Redevelopment Authority and a developer propose an Amendment No. 10 to the Kendall Square Urban Renewal Plan, an area bounded by Main Street, the Grand Junction Railroad, Binney Street, and Third Street in Cambridge. The project will increase new development in this area by 1.13 million square feet for mixed-uses (office, retail, and residential).

Notice of Project Change

Supplemental Environmental Impact Report - 2015


Apex Center (formerly Beacon-North)

A mixed-use development (retail, restaurant, entertainment, office, and hotel space) consisting of 12 building complexes totaling 445,500 square feet. This project is located on a 43.6 acre site bounded by Route 20, Ames Street, and Glen Street.

Notice of Project Change 

Draft Environmental Impact Report – 2015


The Office and Research Center + The Residences at Assembly

This four-phase development is located on an approximately 9.4-acre lot within Somerville’s Assembly Square area. The developer proposes a mixed-use project (office, retail, restaurant, hotel, and residential). When completed, the entire project will comprise roughly 1.7 million square feet.

Expanded Environmental Notification Form


Park Central

This mixed-use project will contain 180 rental units and 140 single and duplex townhome condominium units. A future phase will include a 125 room hotel and a 150 unit assisted living facility. The total square footage of this site will comprise 806,800 square feet on an approximately 101 acre parcel northeast of the I-495/Route 9 Interchange.

Expanded Environmental Notification Form


526 & 528 Boston Post Road

Located on approximately 50 acres, this project is bordered by Boston Post Road (Route 20) to the south, to the east by commercial properties, to the west by agricultural use and open space, and to the north by a former railroad right-of-way. This mixed-use project comprises approximately 80,000 square feet of retail and a range of residential developments totaling 520,000 square feet (250 apartment units, 60 age-restricted condominium units, and a 54-bed assisted living/memory care facility).

Environmental Notification Form 


Arsenal on the Charles

Redevelop and revitalize the 29-acre Arsenal on the Charles campus on Arsenal Street in Watertown through the phased construction of six new buildings, which include mixed-use, civic, and office uses. These new buildings would total approximately 250,000 gross square feet and would be supported by 976 net new parking spaces, resulting in a total parking supply of 2,934 spaces.

Single Environmental Impact Report


Wynn Everett Resort and Casino

This project will construct a resort and casino on approximately 33.9 acres on Horizon Way off Lower Broadway. The project will contain gaming space, a 629 room hotel, retail, restaurant space in addition to convention and meeting space.

Draft Section 61 Findings 

Second Supplemental Final Environmental Impact Report - 2015

Supplemental Final Environmental Impact Report - 2015

Final Environmental Impact Report - 2014

Draft Environmental Impact Report - 2014



Center 128

The project includes approximately 40.93 acres within Needham Crossing, bounded by Highland Avenue to the north, Kendrick Street to the south, 2nd and 4th Avenues to the east, and I-95/Route 128 to the west. Four new office buildings and two renovated office buildings totaling approximately 1.16 million square feet, two 128-room hotels, 19,000 square feet of retail space, and 390 residential units are proposed.

Supplemental Draft Environmental Impact Report 


Station at Riverside

This mixed-use redevelopment is located in and around the current parking lot for the MBTA’s Riverside Station, the western terminus of the MBTA Green Line "D" Branch light rail line. Of the 22.4 acre site, 9.4 acres will be leased by the MBTA for a 580,200 square foot mixed-use development project (office, residential, and retail). The project will also have a 383,590 square foot parking facility for 2,014 parking spaces.

Final Environmental Impact Report


Woburn Landing

Develop an approximately 12 acre vacant parcel located at 369 Washington Street. The proposed mixed-use project will consist of a limited service/extended stay 250 room hotel and three restaurants. Of the three restaurants, two will be full service and the third restaurant will be a fast food facility. The project site will comprise a total of 176,772 square feet in four separate buildings.

Final Environmental Impact Report

Draft Environmental Impact Report