R17CN07 CMAR Arborway Bus Maintenance Facility Project Description The objective of the project is to construct a new, modern bus maintenance and storage facility for up to 200 buses at 500 Arborway. The new facility will support a mixed fleet of battery electric buses and hybrid electric buses. The proposed project includes a new two-story indoor maintenance facility (46,000 SF), a new two-story operations facility (17,000 SF), charging infrastructure facility (16,000 SF), and a new one-story servicing and wash building (14,000 SF), as well as a parking canopy covering the up to 200 bus storage area. The parking canopy will be, at minimum, solar-ready. The project must accommodate approximately 200 parking spaces for employee vehicles (MBTA and employee owned) preferably on site. The scope of work also includes the demolition and abatement of the existing buildings on the 500 Arborway and 327 Forest Hills Street property. [MA

The Massachusetts Bay Transportation Authority is soliciting Engineering services for Systemwide DC Load Flow and Protection Study. The Scope of Service(s) may include but are not limited to: developing, validating, and running a systemwide model using commercially available, non-proprietary software; defining necessary protective relay upgrades to the MBTA’s DC power infrastructure; and supporting implementation of the required system upgrades.

Reinvite - CMAR Ashmont and Mattapan Infrastructure Upgrades, Boston, MA Ashmont Infrastructure Upgrades Trade Package Miscellaneous and Ornamental Irons ONLY The Purpose of the Project is to replace the Traction Power Equipment and Building Systems in order to return the facility back to a state of good repair. The capacity of the Ashmont TPSS will be expanded to meet the additional power requirements of the expanded Codman Yard and the upgrade Mattapan High Speed Line. The project scope of the Ashmont TPSS Replacement Project will include a phased full replacement of the traction power electrical equipment as well selected replacement and upgrades of the building structure (roof, masonry) and internal building systems including heating, ventilation, low voltage electrical, plumbing and safety systems. This substation will remain in service during the phased replacement. It is imperative that the service of the substation not be interrupted as it is the power source for the Mattapan Trolleys and Codman Yard.

The purpose of this project is to provide a new access point to the Red Line northwest of the Charles River that will accommodate equipment, labor, and material delivery into the tunnel more efficiently. The MBTA Red Line subway northwest of the Charles River consists of a below grade tunnel with access for equipment, such as Hi-Rail vehicles, and maintenance only available just east of the Kendall/MIT station, some four miles from Alewife Station at the First Street gate. With the existing tunnel being over 25-ft below ground surface near Alewife, a tunnel is the most practical means of providing access from grade to the tunnel below for access.

CMAR Downtown Crossing Phase 2 and Central Square Station Accessibility Improvements, The purpose of this proposed work is to provide three new accessible transfer elevators at Downtown Crossing and Park Street Stations, and at Central Square Station, replace the existing outbound platform elevator and install 2 new elevators, while providing a more accessible, code compliant station. Request for Qualifications for the following Trades: Masonry Work Miscellaneous and Ornamental Irons Waterproofing, Damp-proofing and Caulking Roofing and Flashing Painting Terrazo Tile Elevators Plumbing Heating, Ventilating & Air-Conditioning Fire Protection Sprinkler Systems Electrical Work