1. Genzyme Center: Brownfield Development and Green Building Construction
Rick Mattila – Genzyme Corporation
Stuart Dash – Genzyme Corporation
Ed Walsh – Mira Development
Tom Clark – The RETEC Group, Inc.
Chuck Wilk – Portland Cement Association

2. Presentation Overview
Rick Mattila
Welcome and Overview of Project and Building
Stuart Dash
Land Use Plans
Ed Walsh
Redevelopment
Tom Clark and Chuck Wilk
Remediation
Genzyme Center
Wrap Up and Thank You

3. Land Use Plans Stuart Dash Director of Community Planning
City of Cambridge
Community Development

4. Historical Land Use
Tidal Marsh
Charles River Basin
Industrial Era

5. NASA
CRA/Kennedy
DOT/Kendall Square

6. East Cambridge Riverfront
Establish PUD Process
Design Guidelines

7. The ‘80s
Office Park Proposal
Zoning Committee

8. Proposal by Lyme & the East Cambridge Response
Open Space
Rezoning

9. The Project at the Planning Board
The PUD Process
Traffic
Decision

10. The Project Underway
The Buildings
The Open Space
The Impact

11. Ed Walsh President Mira Development (Formerly of Lyme Properties)
Redevelopment
Ed Walsh
President
Mira Development
(Formerly of Lyme Properties)

12. Kendall Square Introduction
Former Use: Manufactured Gas Plant (MGP)
Primary Contamination: DNAPL
Environmental Remediation: March October 2001
New Use: Life Science/Office, Residential, Performing Arts, Retail, Restaurant, and Public Open Space
Development Schedule:

13. Kendall Square Site Size: 10 Acres Location: Cambridge, Massachusetts
Bounded by Linskey Way, Third Street and Broad Canal Topography: Flat
Surrounding Community: Densely Populated with Commercial, Residential and R&D Users

14. Kendall Square Historic Use (1870-1998)
Prior to 1870: Open Space & Marsh Land
: Cambridge Gas Light Company (Manufactured Gas Plant)
: Old Colony Tar Company (tar rendering operation)
: COM Electric & Gas (Surface Parking Lots – Temporary Remedial Solution as Interim Cap) K

15. Kendall Square Contamination from Historic Activities
Coal Tar Residuals: Polycyclic Aromatic Hydrocarbons in soils (0-20 feet below grade) and as Dense Non-Aqueous Phase Liquid > 0.5” in depth at groundwater/clay interface (approximately 20 feet below grade)
Petroleum Residuals: Volatile Organic Compounds in soils (0-20 feet below grade) and as Light Non-Aqueous Phase Liquid (LNAPL) >0.5” in depth on surface of groundwater (approximately 10 feet below grade)
Groundwater Quality: Generally meets GW-2 Standards (non-potable but typical of urban setting)

16. Kendall Square Master Plan
Building A: 247,000 SF lab (Vertex)
Building B: 223,000 SF lab (TBD)
Building C: 85,000 SF Performing Arts (Constellation)
Building D: 273,000 SF Office (Genzyme)
Building E1: 150,000 SF Residential (TBD)
Building E2: 330,000 SF Residential (Twining)
Building G: 50,000 SF Mixed Use (res./retail/office)
Parking: Two Below Grade Facilities for 2,000 Vehicles (beneath Building B and Buildings E1/E2/G)

17. Kendall Square Master Plan Drivers
Maximize Density: FAR of Bonus Housing for total of 1,376,000 SF of Mixed Use Development
Optimize Return on Investment
Below Grade Parking: 2,000 Vehicles
Aesthetics & Integrated Design:
Contemporary, Class “A” Architecture
Complementary Open Space with Public Amenities

18. Kendall Square Summary of Remedial Program
Remedial Drivers
Permanent Solution
Neighborhood Impacts
Cost & Schedule
Compatibility
Ability to Obtain Financing
Environmental Liability Insurance
Kemper & Zurich (1st & 3rd Party Coverage w/ Re-opener)
$20 MM/10 Year Term
Phase I Remediation
$11 MM Soil Premium
RAO Filed 2002
No AUL
Phase II Remediation
$8 Million for In Situ Stabilization
Three pRAOs filed in 2002
Three AULs filed in 2002
Two pRAOs filed in 2004
One AUL filed in 2004
$6.5 Million Premium for Soil Disposal on Building B Garage

19. Kendall Square Development Summary
Land Acquisition: $21,000,000 or ~ $15/FAR SF
Remediation Costs (hard & soft cost): $25,000,000 or ~$18/FAR SF
Site Development/Infrastructure/Open Space Areas (soft & hard costs): $20,000,000 or ~$15/FAR SF
Total Pre-Construction (garage & infrastructure) Costs: $70,000,000 or ~$50/FAR SF
Comparable Value – Clean Site w/ Permits & Infrastructure: ~$65/FAR SF
Permitting and Environmental Risk: $15/FAR SF

20. 500 Kendall Street, Cambridge, Massachusetts

21. 675 West Kendall Street, Cambridge, Massachusetts

22. 350 Third Street, Cambridge, Massachusetts

23. Remediation Tom Clark and Chuck Wilk Title ??? The RETEC Group, Inc.
Portland Cement Association

24. Kendall Square Remediation

25. Kendall Square Presentation Outline
History
Environmental Conditions
Remediation Strategy
Remediation Details

26. Kendall Square Historic Use (1870-1960)
Prior to Open Space & Marsh Land K

27. Manufactured Gas Plant
Kendall Square Historic Use ( )
Manufactured Gas Plant K

28. Kendall Square Historic Use (1870-1960)
Historic MGP Structures K

29. Kendall Square Contamination from Historic Activities
1,000 tons of Coal yields 10,000 MCF Gas and 12,500 Gallons of Tar

30. Kendall Square Contamination from Historic Activities
Bell
Ground
Surface
Below Grade
Masonry Water
Tank
Diagrammatic Section of Multiple Lift Gas Holder

31. Kendall Square Contamination from Historic Activities

32. Kendall Square Remediation Strategy in Support of Redevelopment

33. Kendall Square Remediation Strategy in Support of Redevelopment
Management of Uncertainty
Extensive investigation and precharacterization
Environmental Insurance - $10 MM, 10 year-term
Selection of Remedial Technologies
Extensive cost/benefit evaluation
Locate garage excavations in areas with the cleanest soils to reduce the cost of soil disposal
Remediate the most contaminated areas using ISS to allow soils to stay on site
Engineering and Institutional Controls to Manage Risks Associated with Contamination Remaining On Site
Engineering Controls - vapor barriers, venting systems, and dewatering and water treatment systems
Institutional Controls - Activity and Use Limitations (AULs)

34. Kendall Square Excavation Summary
Location of two 4-Level Garages with 2,000 car capacity
In Situ Sampling: >800 Samples
Clean Up Goal: Clean Closure
Mass Excavation with Off-Site Disposal & Recycling
Duration: March, October 2001

35. Kendall Square Excavation
Precharacterization Grid – 1 of 7

36. Kendall Square Remediation Excavation

37. Kendall Square Remediation Excavation

38. Kendall Square Remediation In Situ Solidification (ISS)
In Situ Solidification Area

39. Kendall Square Remediation In Situ Solidification (ISS) Summary
Clean Up Goals
Address NAPL
Risk Based Closure
Impact Area: 3.3 acres to 20 feet deep (~100,000 CY)
Removal of all Subsurface Obstructions to 15 feet bgs
In Situ Solidification with Cement Slurry
Duration: June April 2001

40. Kendall Square Remediation In Situ Solidification (ISS)
Conceptual In Situ
Solidification Operation

41. Kendall Square Remediation In Situ Solidification (ISS)

42. Kendall Square Remediation In Situ Solidification (ISS)

43. Kendall Square Remediation In Situ Solidification (ISS)
ISS Design Mixture
7% Cement by Weight
5% Water by Weight
<1% Bentonite by Weight
Performance verified in laboratory treatability study
Performance verified with quality assurance testing during construction

44. Kendall Square Remediation In Situ Solidification (ISS)

45. Kendall Square Remediation Odor and Vapor Management
Suppressant Foam
Weather Impacts
Wind Screens
Air Monitoring
Odor Monitoring
Reporting
Stockpile Management
Sequencing
Public Meetings

46. Kendall Square Activity & Use Limitations in ISS Area
Risk Based Approach
Recorded with Deed
Major Limitations
Engineering Controls
Vapor Barrier/
Sub-Slab Venting System with Vapor treatment
Soil Management Plan
Pavement or Clean Soil Cover in Open Space Areas

47. Kendall Square Engineering Controls