The Residences at Alewife Station 195 & 211 Concord Turnpike Community Meeting Peabody School November 10, 2016
Site Context Special District 4
Special District 4 Restored Planned Development
Special District 4 Restored
The Residences at Alewife Station Site Plan & Architecture
Site Context Plan
Site Context Plan Birdseye looking North Birdseye looking South
Existing Site Conditions
Site Constraints RT. 2 / Concord Turnpike VOX Garage Garage Existing Drive Pedestrian Access
Breaking Down the Street Wall
Breaking Down the Street Wall
Creating Open Space Raingarden Entry Court Drive Courtyard Courtyard Raingarden
Creating Open Space Raingarden Entry Court Drive Courtyard Courtyard Courtyard Courtyard Courtyard Raingarden
TWO WAY TWO WAY Site Access Plan ONE WAY ONE WAY TWO WAY TWO WAY SERVICE
Major Pedestrian Routes BIKE BIKE BIKE BIKE
Site Plan 320 rental units 200-space garage 42 surface parking spaces
Building 1 Looking East
Building 1Bridge & Site Access
Building 1Bridge & Site Access
Building 2 Looking East
View Looking West
Building 2 Entry & Site Egress
Access Drive Looking West
Access Drive Looking North to RT.2
Building 2 Courtyard
Access Drive Looking East
Project Summary 320 rental units (studio, 1, 2 & 3 bedroom) 242 parking spaces (200 in garage, 42 other) 5 stories over parking (68 feet) 324,612 GSF building 1.95 FAR
The Residences at Alewife Station Site Improvements
Site Improvements In accordance with the Massachusetts Wetlands Protection Act (WPA) 310 CMR 10.00 and the Stormwater Management Handbook guidelines for Redevelopment Projects, the project analyzed the following existing and proposed conditions: Impervious & Pervious Groundcover Areas Stormwater Management & Water Quality Treatment 100 Buffer to Bordering Vegetated Wetlands Land Subject to Flooding (Resource Area)
Existing Site Conditions Lot Area = 3.8 acres Impervious Area = 92.9% Minimal Stormwater Treatment Small Portion of lot located within 100-foot wetland buffer Located within FEMA 100-year Floodplain
Impervious & Pervious Groundcover Areas Existing Site = 3.8 acres Impervious Area = 3.6 acres (93%) Proposed Impervious Area = 2.6 acres (70%) Project adds nearly one (1) acre of new pervious area
Stormwater Management & Water Quality Treatment The project will employ natural & structural Best Management Practices (BMPs) to manage & treat stormwater runoff: Wet Pond Rain Garden Catch Basins (Deep Sump w/ Hoods) Water Quality Treatment Units (i.e. Stormceptor or approved equal)
Bordering Vegetated Wetlands on Adjacent Site
100 Buffer to Bordering Vegetated Wetlands Existing Total Buffer Area = 13,248 sf Impervious Area = 9,630 sf (73%) M o t e l Proposed Impervious Area = 4,900 sf (37%) Proposed Building Parking Lot Wet Pond Project significantly reduces impervious surface in buffer area
Land Subject to Flooding Design based upon current FEMA floodplain mapping for 100-Year Storm Event AND the City of Cambridge Climate Change Vulnerability Assessment (CCVA) Projections for 2030 & 2070 100-year storms Recommendation to design to 2030 projection and show ability to recover from 2070 projection
Existing Conditions Existing 100-Year FEMA Floodplain Cambridge Gateway Inn Lanes and Games FEMA 100-year Flood Elevation = 6.8 3,748 CY of Existing Flood Storage
Existing Conditions Projected 2030 100-Year Floodplain CCVA s Estimated 2030 100-year Flood Elevation = 7.5 6,276 CY of Existing Available Flood Storage
100-Year FEMA and 2030 Floodplain Mitigation
Proposed Conditions 100-Year FEMA Floodplain FEMA 100-year Flood Elevation = 6.8 Underside/Bottom of Garage Slabs located at elevation 7.5 4,172 CY of Available Flood Storage Created Project provides an additional 424 CY of Available Flood Storage
Proposed Conditions Proposed 2030 100-Year Floodplain Estimated 100- year Flood Elevation = 7.46 Parking garage slabs set at 7.5 ; building lobbies set at elevation 8.5 7,174 CY of Available Flood Storage Created Project provides an additional 898 CY of Available Flood Storage
Proposed Conditions Proposed 2070 100-Year Floodplain Estimated 100-year Flood Elevation (Based upon Estimated Sea Level Rise AND Storm Surge = 11.16 NAVD Key Building Elevations: Underside/Bottom of Parking garage slabs - Elevation 7.5 NAVD Building lobbies & first floor amenity space - Elevation 8.5 NAVD Residential Units Approximate Elevation 21.0 NAVD Building Ground floor space (lobby & amenities area) and Parking Garage Entries will utilize flood gates at openings during forecasted 100- Year Storm Events and other major storm events.
Site Improvements Summary Impervious & Pervious Groundcover Areas Replaces almost an acre of impervious area with pervious area Stormwater Management & Water Quality Treatment - Significant improvements over existing conditions; including reduction in peak flows & water quality treatment 100 Buffer to Bordering Vegetated Wetlands Impervious area in the buffer zone will be reduced by almost 50% Stormwater runoff captured and treated prior to discharge to adjacent wetlands Land Subject to Flooding Increases onsite flood storage capacity Meets the recommendations of the City s Climate Change Vulnerability Assessment Accommodates the 2030 100-yr flood projection and able to recover from 2070 projection
The Residences at Alewife Station Traffic Assessment
Traffic Study Elements Study Area approved by Traffic Department Existing Conditions Vehicles Pedestrians Bicycles Vox on Two Background Traffic Growth Project Traffic Project Impacts Proposed Mitigation
Study Area
Existing Peak Hour Site Trip Generation Weekday Morning Entering Exiting Total 31 6 37 Weekday Evening Entering Exiting Total 36 25 61
Vox on Two Monitoring Survey 222 of 227 units are leased The mode type of all weekly trips made by current tenants included: 35% single occupancy vehicle 4% rideshare 45% public & private transit 8% walk 4% bike 4% other (includes work from home) 44 to 62% fewer peak hour vehicle trips than originally estimated
Public Transit
Private Transit
Pedestrian & Bike Paths
Weekday Peak Hour Project Trip Generation Total SOV Rideshare Transit Pedestrian Bicycle Other Morning 208 73 8 95 16 8 8 Evening 172 61 7 76 14 7 7
Net New Peak Hour Project Trips Weekday Morning Entering Exiting Total Proposed Existing Net New Trips 21 57 78 31 6 37 (10) 51 41 Weekday Evening Entering Exiting Total 35 30 65 36 25 61 (1) 5 4
Project Mitigation Focus is to reduce single occupancy vehicle use: Provide ample bicycle storage & maintenance areas Provide 20 bicycles for tenant s use at no charge Provide each tenant with a complimentary Charlie Card for one month upon leasing Appoint a Transportation Demand Manager Submit annual monitoring reports
The Residences at Alewife Station Community Engagement
courbanize Visit the project page using the web address courb.co/ras Learn about new project information, see the timeline and stay in the loop We ll post information about meetings and milestone events
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Discussion