1. Storm Surge & Critical Infrastructure on Nantucket Brian Bach  Cece Cotter  Matt Lepine  Sean Regan Sponsor: Dave Fronzuto, Nantucket Emergency Management Agency Project Liaison: Peter Morrison

2.  Nature of the Problem  Our Mission  Study Area  Our Approach  Risk Assessment  Mitigation Tactics  Priorities  Deliverables  Takeaways Overview

3. https://twitter.com/cjmcmahon_NH/status/262994275829174273/photo/1?ref_src=twsrc%5Etfw

4. Nature of the Problem http://www.nhc.noaa.gov/surge/

5. http://phys.org/news/2014-03-anthropocene.html

6. Nantucket Lower Broad Street to Steamboat Wharf Lower Broad Street / Easy Street

7. Evaluate & Identify the best approaches the Town of Nantucket can take to protect its critical infrastructure from damage due to storm surge. Our Mission

8. Built Infrastructure: Easy Street Bulkhead Finance Department Harbormaster’s Office / Marine Department Natural Resources Department NRTA / Health Department Post Office Sheriff’s Office Stop & Shop Town Administrative Building U.S. Coast Guard Station Transportation: Children’s Beach Boat Ramp Easy Street Francis Street Harbor View Way Lower Broad Street Steamboat Wharf Straight Wharf Tanker Dock Town Parking Lot Washington Street Utilities: Candle Street Substation Children’s Beach Stormwater Pump Station Goose Pond Sewer Main Sea Street Pump Station Union Street Telephone Building

9. Our Approach

10. Risk Assessment

11. Finance Department

12.  Elevation  Floodproofing  Dry & Wet Methods  Relocation of Function Mitigation Tactics

13. Recommendations Non-Relocatable Infrastructure: Elevate  Candle Street Substation  Easy Street Bulkhead  Sea Street Pump Station  Steamboat Wharf  Stormwater Pump Station  Straight Wharf  Tanker Dock Non-Relocatable Infrastructure: Floodproof  Post Office  Stop & Shop

14. Recommendations Relocatable Infrastructure: Elevate  Harbormaster’s Office / Marine Department  Natural Resources Department  Sheriff’s Office  U.S. Coast Guard Station Relocation of Function:  Finance Department  Town Administrative Building

15. Recommendations Roads:  Easton Street  Easy Street  Francis Street  Harbor View Way  Lower Broad Street  Washington Street No Further Action:  Children’s Beach Boat Ramp  Goose Pond Sewer Main  NRTA / Health Department  Telephone Building  Town Parking Lot

16. Priorities #1 - Sea Street Pump Station #2 - Candle Street Substation

17. Summary Database

18. GIS Database

19.  Be proactive, especially near the coast  Check FEMA Flood Maps  Get surveyed  Begin planning immediately  Expand to the rest of the island Takeaways

20.  Emphasized the issue of storm surge  Highlighted critical infrastructure  Recommended mitigation tactics  Identified future steps Summary

21.  Frank Holdgate  Peter Morrison  Dominic Golding  Reinhold Ludwig  Dave Fronzuto Acknowledgements