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Sandy Impacts Example: PATH
• Extensive flooding of PATH tunnels, stations and substations • Significant damage to traction power systems, signals, elevators, escalators, and other electrical devices
Designing for a Resilient Future PANYNJ Climate Resilience Guidelines •Considered for all PA capital projects •Addresses coastal inundation hazards •Step-wise process for integrating cost-effective resilience measures •Issued in 2015 •Supersedes 2009 Standard (BFE + 30”)
Designing for Flood Protection Standards/Codes Meet or exceed minimum applicable codes and standards, including: •ASCE 24 Standard – Flood Resistant Design and Construction •ASCE 7 Standard – Minimum Design Loads for Buildings and Other Structures •FEMA Technical Bulletin 3-93 – Non-Residential Floodproofing •FEMA-P-936—Floodproofing Non-Residential Buildings (2013)
Flood Protection Design Criteria Sea Level Rise and Severe Storms
Process to establish Design Flood Elevations: • Establish flood protection level above code based on: 1. FEMA BFE 2. Asset criticality (ASCE 24) 3. Sea Level Rise commensurate with asset life • Recognize system-wide flood protections already in place • Perform Benefit Cost Analysis for high value projects • Establish Basis of Design in coordination with agency stakeholders
FEMA Base Flood Elevation • Based on latest FEMA Region 2 PFIRMs (2013/2015)
Freeboard Asset Criticality • NYC/NJ flood hazard code defines critical/non-critical buildings • Code flood protection levels higher for buildings deemed “critical” • Infrastructure flood protection is not covered by the building code • PA critical Infrastructure categories: • Train Tunnels • Vehicular Tunnels • Electrical substations/switch houses and emergency generators • Fire Protection Systems • Aircraft Fueling Systems • Pumping Systems and Dikes
Regional Mean Sea Level Rise New York City Panel on Climate Change
80
75” High-Estimate
Sea Level Rise (inches)
70
60
50” Mid-Range (Upper)
50
40
36” Mid-Range
30
28” 20
22” Mid-Range (Lower)
16” 10” Low Estimate
10
0
2020s
2050s
2080s
Source: NASA Goddard Institute, Columbia University (2013) Applicable to Port District and Recommended for Port Authority adoption by Office of Environmental and Energy Programs
Sea Level Rise Vulnerability and Risk Assessment Port Newark South
SLR and Flood Risk Study evaluated 4 coastal flood return periods with these future conditions: • • • •
10-year: ~90% chance within a 20-year period 50-year: ~30% chance within a 20-year period 100-year: ~20% chance within a 20-year period 500-year: ~3% chance within a 20-year period
Projected sea level increases shift these frequencies
Inundation Modeling
Flood Depth (feet) 0-2.0 2.1-4.0
10-year (10% AEP) Event
SLR: 6”
SLR: 9”
SLR: 16”
4.1-6.0 6.1-8.0
8.1-10.0 10.1-12.0
SLR: 10”
SLR: 17”
SLR: 30”
Flood Loss Modeling
Scenario 0 (100 YR) – Building Loss
Regional Collaboration • Regional transportation collaboration – working with MTA, NJ Transit, Amtrak, etc.
•Regional collaboration and technical exchange with ORR, USACE, GOSR, NYCEDC, NYCOEM •NYC Climate Change Adaptation Task Force
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