1. PROJECT OVERVIEW

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3. Green Line Extension Project 3 College Ave Ball Sq Lowell St Gilman Sq Lechmere Union Sq Washington St

4. PROJECT OVERVIEW GREEN LINE EXTENSION PROJECT 4 Relocation of 4 Miles of Double Track Commuter Rail Drainage & Utilities in Corridor and on Bridges Approximately 26,000LF of Retaining Walls & Noise Walls Widen or lengthen 8 Bridges 7 Stations 4.5 Miles of Green Line Double Track Over 1 mile of Viaducts Maintenance Facility Catenary, Signals, Communication and Power Roadway and Traffic Improvements

5. PROJECT OVERVIEW Existing/Future Condition Existing Condition Property Line Future Condition Property Line

6. PROJECT OVERVIEW Abutting Residential Properties (200+ Along ROW) Residential Properties w/ Noise Barriers and/or Retaining Wall (130+ Along ROW) Active Businesses Abutting ROW Removal of Green Buffer Areas Between Track & Private Properties Encroachments into R-O-W Limited Construction Zones Outside the R-O-W Need to Maintain Rail Service Desire to Minimize Real Estate Utility Relocations: 40 Different Utility Companies in GLX Corridor GLX Corridor Design & Challenges

7. PROJECT OVERVIEW Project Phasing Phase 2A Phase 2 Phase 4 Phase 3 - VMF Phase 1 – Medford St Bridge Phase 1 – Harvard St RR Bridge Phase 1 – 21 Water Lechmere Union Sq Washington St College Ave Ball Sq Lowell St Gilman Phase 1 – Harvard Street Rail Bridge; Medford Street Rail Bridge; & 21 Water Street Demolition Phase 2 – Lechmere to Washington Street Phase 2A – Union Square Branch Phase 3 – Vehicle Maintenance Facility Phase 4 – Washington Street to College Avenue

8. PROJECT OVERVIEW Phase 1: Early Bridge & Demolition Package Medford Street Rail Bridge Harvard Street Rail Bridge 21 Water Street Demolition 8 Medford RR Harvard RR 21 Water St

9. PROJECT OVERVIEW Phase 2 & 2A Service from New Lechmere Station to Washington Street Station Service from New Lechmere Station to Union Square Station 9 Washington St Rail Bridge & Station Lechmere Station Union Sq Station

10. PROJECT OVERVIEW Lechmere, Washington Street & Union Square Stations 10

11. PROJECT OVERVIEW Phase 3: Vehicle Maintenance Facility & Storage Yard 11 VMF Site Needed for Phase 4 Start-Up

12. PROJECT OVERVIEW Maintenance Facility & Storage Yard Scope of Work 12 Demolition & Site Clean-Up of Existing Properties Construction of New Maintenance Facility Yard & Systems Storage for 76 Vehicles Transportation Building Maintenance of Way Building Employee Parking & Deck MassDOT Board Approved 2 Land Takings in March 2014

13. PROJECT OVERVIEW Phase 4: Service to College Ave Station 13 School St Bridge College Ave Station Ball Sq Station Lowell St Station Gilman Sq Station Broadway College Ave Bridge

14. PROJECT OVERVIEW Gilman Sq., Lowell St., Ball Sq. & College Ave. Stations 14

15. PROJECT OVERVIEW GLX Recent Milestones 15 Notice to Proceed on Early Work Construction received October/November 2014: o Contract#1-Procurement of Long Lead Items o Contract#2-Early Utilities Phases 2/2A & 4 o Contract#3-Miller’s River & Fitchburg Line o Contract#4A-Procurement of Viaduct Steel FTA Full Funding Grant Agreement signed January 2015

16. PROJECT OVERVIEW