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Raise your hand or type into the comment box at any time. 1 LOWER MANHATTAN COASTAL RESILIENCY PROJECT – BATTERY Introductory Community Presentation March 24, 2021 Stantec team Greg Sprich April Schneider Amy Seek PE, ENV SP PE, LEED®AP ND, ECODISTRICTS AP, ENV SP RLA, WEDG PROJECT MANAGER / CIVIL ENGINEER CIVIL ENGINEERING LEAD LANDSCAPE ARCHITECTURE LEAD 3 Lower Manhattan Coastal Resiliency projects N 4 Project location PROJ ECT BOUNDARY N 5 Wharf History Timeline 1855-1890 Castle Clinton used as the 1811 federal immigration center; 1940-1952 The earliest known Southwest Battery Fort (now processed approximately Battery Park closed to build 2019 inhabitants in the area known as Castle Clinton) eight million immigrants Brooklyn-Battery Tunnel and LMCR Study were the Lenape erected 200ft offshore during this time Battery Park Underpass 1600 2000 1900 2100 1700 1800 1626 1853-1872 1890-1941 1974 2012 Fort Amsterdam Period of waterfront filling to create developable Castle Clinton acquired 1.2 million cubic yards Hurricane Sandy constructed by land. Roughly 20% of the larger metropolitan by New York City of earth from the World the Dutch for the region is built on landfill and much of that fill is Department of Public Trade Center foundation purposes of trade varied forms of waste from city development Parks and operated as excavation was used to and defense projects and garbage the New York Aquarium create Battery Park City 7 A legacy of change 1767 1827 1821 1886 1848 1930 1946 CURRENT WHARF EXTENTS N 0' 50' 100' 200' 8 WHARF HISTORY CIRCA 1890 CIRCA 1920 1946 PLATFORM 9 Wharf Activity Direct waterfront access WHARF ACTIVITY FERRY GARDENS OF REMEMBRANCE PROMENADE VARIED SEATING 11 Frequented by passenger vessels WHARF ACTIVITY Ferry service out of the Battery has been operating since 1953, when the Circle Line started taking visitors to the Statue of Liberty. 12 WHARF ACTIVITY Around 2004, New York Water Taxi also began running operations out of the Battery and berths at slip 6. 13 A range of park activities WHARF ACTIVITY INCIDENTAL VIEWS OF THE WATER 14 Wharf Condition The wharf is in poor condition WHARF CONDITIONCONDITION 1 SECTIONS OF TIMBER PILES MISSING DUE TO ROT 5 MARINE DEGRADATION AND TIMBER ROT 2 STRUCTURAL CRACK IN CONCRETE CAP 6 DAMAGED SEA RAIL EXPOSED CONCRETE GRAVITY WALL FACE DUE TO 7 DAMAGED DECK 3 COLLAPSING GRANITE BLOCK FASCIA 8 SINKHOLES 4 DAMAGE TO TIMBER LINE CAP 6 8 EXISTING WHARF EL. +6.00 3 7 2 5 1 1 4 1 All elevations in NAVD88 16 PAGE 8/13 WHARF CONDITION SINKHOLE 2018 17 Photo 9: Picture taken in February 2018, looking west Photo 10: Picture taken in February 2018 – concrete foundation TABLE 3.1-6 SUMMARY GANGWAY CONDITIONS Gangway No. Condition Primary Defect(s) Light mechanical damage, corrosion Gangway 1 Moderate cracking on returns Gangway 2 Moderate Corrosion cracking Gangway 3 Moderate Moderate mechanical damage Heavy mechanical damage, open Gangway 4 Advanced spall, exposed reinforcing Heavy mechanical damage, exposed Gangway 5 Advanced reinforcing Gangway 6 Minor Light mechanical damage WHARF CONDITION HEAVED CONCRETE CAP 18 Photograph 3.1-12 Heaved concrete apron adjacent to Merchant Mariner Memorial. 3-38 WHARF CONDITION EXPOSED CONCRETE GRAVITY WALL FACE COLLAPSING GRANITE BLOCK FACADE DAMAGED CONCRETE FOUNDATION TIMBER PLATFORM EXHIBITING ROT 19 WHARF CONDITION EXPOSED AND CORRODED WIRE REINFORCEMENT MARINE DEGRADATION AND TIMBER ROT 20 Photograph 3.1-13 Full height loss of granite block fascia along concrete gravity wall. Photograph 3.1-14 Prior spall repair developing corrosion cracking and additional spalls. 3-39 Photograph 3.1-10 Deflected pile cap. Note separation from concrete deck above. WHARF CONDITION STRUCTURAL CRACK IN CONCRETE CAP 21 Photograph 3.1-11 Large structural crack in concrete deck perpendicular to pile caps. 3-29 Photograph 3.1-5 Typical heavy corrosion of batter pile steel connection hardware. WHARF CONDITION SECTIONS OF TIMBER PILES MISSING DUE TO ROT 22 Photograph 3.1-6 Heavy section loss of timber pile due to top rot. 3-25 Timeline elevate it to address sea level riseforthenext80years. sealevel address itto elevate The wharf ofadaptation aswe willcontinue itshistory 1600 1700 1800 2000 1900 2020 2100 23 Climate Context 2021 daily water levels CLIMATE CONTEXT 25 Relative sea level rise at the Battery CLIMATE CONTEXT SINCE 1900, MEAN SEA LEVEL SINCE 1950, MEAN SEA LEVEL HAS RISEN BY ABOUT 2' HAS RISEN BY ABOUT 1' Adapted from New York City Panel on Climate Change 2019 Report Chapter 3: Sea Level Rise We are seeing a new, more extreme, trendline starting in the 1990s. 26 Designing with uncertainty CLIMATE CONTEXT WHARF DESIGN WILL CONSIDER THE 90TH PERCENTILE SCENARIO Adapted from New York City Panel on Climate Change 2019 Report Chapter 3: Sea Level Rise 27 2021 MHHW CLIMATE CONTEXT PRESENT DAY MHHW IS 3.5' BELOW THE WHARF 28 2050 MHHW if wharf remains at current elevation CLIMATE CONTEXT MHHW IS 1’ BELOW THE WHARF DAILY INUNDATION OF BOAT SLIPS 29 2080 MHHW if wharf remains at current elevation CLIMATE CONTEXT MHHW INUNDATION REACHES 1' ABOVE THE WHARF 30 2100 MHHW if wharf remains at current elevation CLIMATE CONTEXT MHHW INUNDATION REACHES 2.5' ABOVE THE WHARF 31 2100 daily water levels CLIMATE CONTEXT HIGHER HIGH WATER WOULD OVERTOP WHARF FOR ~4.5 HOURS 32 CLIMATE CONTEXT HURRICANE SANDY OCTOBER 29, 2012 33 CLIMATE CONTEXT DAILY TIDAL FLOODING 34 Design Criteria Wharf elevation DESIGN CRITERIA EXISTING WHARF EL. +6.0 MHHW EL. +2.28 MSL EL. 0.00 MLLW EL. -2.77 All elevations in NAVD88 36 Wharf elevation DESIGN CRITERIA MHHW + SLR EL. +8.58 EXISTING WHARF EL. +6.0 6.3 FT (2100 90TH PERCENTILE SLR) MHHW EL. +2.28 MSL EL. 0.00 MLLW EL. -2.77 All elevations in NAVD88 37 Wharf elevation DESIGN CRITERIA MHHW + SLR EL. +8.58 1.32 FT (WAVE HEIGHT) EXISTING WHARF EL. +6.0 6.3 FT (2100 90TH PERCENTILE SLR) MHHW EL. +2.28 MSL EL. 0.00 MLLW EL. -2.77 All elevations in NAVD88 38 Wharf elevation DESIGN CRITERIA PROPOSED WHARF EL. +11.0 EL. +11.0 1.1 FT (FREEBOARD) MHHW + SLR EL. +8.58 1.32 FT (WAVE HEIGHT) EXISTING WHARF EL. +6.0 6.3 FT (2100 90TH PERCENTILE SLR) MHHW EL. +2.28 MSL EL. 0.00 MLLW EL. -2.77 All elevations in NAVD88 39 LMCR project coordination EL. +18.5 SOUTH BATTERY PARK CITY RESILIENCY PROJECT FINANCIAL DISTRICT AND SEAPORT 100-YEAR STORM SURGE + CLIMATE RESILIENCE MASTER PLAN 2050 SEA LEVEL RISE (30") CRITERIA AND DESIGN TBD COORDINATION POINT LOWER MANHATTAN COASTAL RESILIENCY PROJECT – BATTERY 2100 SEA LEVEL RISE (75") EL.+11 N 0' 50' 100' 200' All elevations in NAVD88 40 Coordinated adaptation projects DESIGN CRITERIA SOUTH BATTERY PARK CITY RESILIENCY PROJECT LOWER MANHATTAN COASTAL RESILIENCY PROJECT – BATTERY EL +18.5 EL +13 EL +10 EL +10 EL +9 EL +11 EX. WHARF EL. +6.0 All elevations in NAVD88 41 2020 vessel elevations DESIGN CRITERIA +11.0 EXISTING WHARF EL. +6.0 2020 MLLW All elevations in NAVD88 42 Two-slip fixed platform DESIGN CRITERIA +11 +6 +8.5 +11 BOTTOM SLIP AT EL. +6 TOP SLIP AT EL. +8.5 All elevations in NAVD88 43 Understanding the Site Existing access to wharf UNDERSTANDING THE SITE RESTAURANT LEGEND PARK ENTRANCE STAIRS MOVABLE SECURITY FENCING N 0' 50' 100' 200' PRIMARY PATH TO WHARF RAMPS / SLOPED PATHWAYS INACCESSIBLE FOR REPAIRS SECONDARY PATH TO WHARF 45 Current typical wharf segment UNDERSTANDING ELEVATED GARDENS OF REMEMBRANCE DIRECT CIRCULATION FROM THE SITE PARK TO WHARF, USES STAIRS IN MANY CASES QUEUING AND SLIP AREA ROW OF EXISTING MATURE TREES FOR VESSEL OPERATIONS +8.5 +6 BOSQUE PATHWAY GARDENS OF REMEMBRANCE WHARF CIRCULATION SLIP & VESSEL OPERATIONS AREA VARIES 22.5' 32.5' MHHW 2.28 (El.) 6' MLLW -2.77 (El.) 46 Seating UNDERSTANDING THE SITE LINEAR BENCH - 840LF BACKED BENCH - 224LF (28) BACKLESS BENCH - 264LF (44) 47 Significant views UNDERSTANDING THE SITE TO WTC PIER A (LANDMARKED) RESTAURANT TO STATUE OF LIBERTY LEGEND TO STATUE PANORAMIC VIEW OF LIBERTY WATER VISIBILITY LINE (WINTER) N 0' 50' 100' 200' INCIDENTAL VIEWS FRAMED VIEWS 48 Incidental views UNDERSTANDING THE SITE 49 Framed views UNDERSTANDING THE SITE 50 View of the water horizon UNDERSTANDING THE SITE Current water view from bosque HORIZON +9' +6' Current water view from bosque MHHW EL. +2.28 MLLW EL. -2.77 51 View of the water horizon UNDERSTANDING THE SITE Current water view from bosque Proposed reduced view of water, with preserved water horizon HORIZON +9' + 11 ' Proposed water view from bosque +6' Current water view from bosque MHHW EL. +2.28 MLLW EL. -2.77 52 Artworks and memorials HISTORIC SHORELINE MARKERS BREAKWATER FLAGSTAFFS KOREAN WAR VETERANS MEMORIAL NORWEGIAN VETERANS MONUMENT EMMA LAZARUS MEMORIAL PLAQUE G A R THE IMMIGRANTS D MARINE FLAGSTAFF E N S O F R E M E M B R AN CE AMERICAN EAST COAST MERCHANT ADMIRAL GEORGE DEWEY MEMORIAL MEMORIAL MARINERS' MEMORIAL GARDENS OF REMEMBRANCE RIVER THAT FLOWS TWO WAYS ADMIRAL DEWEY PROJECT MARKERS N 0' 50' 100' 200' 53 Artworks and memorials AMERICAN EAST COAST MERCHANT MEMORIAL MARINERS’ GARDENS OF REMEMBRANCE MEMORIAL RIVER THAT FLOWS TWO WAYS N 0' 50' 100' 200' 54 UNDERSTANDING THE SITE Gardens of Remembrance DESIGNER: PIET OUDOLF DATE: 2003 55 UNDERSTANDING THE SITE East Coast Memorial ARTIST: ALBINO MANCA DATE: 1963 56 American Merchant Mariners' Memorial ARTIST: MARISOL ESCOBAR DATE: 1988 The River That Flows Two Ways ARTIST: WOPO HOLUP DATE: 2000 Historic structures CASTLE CLINTON (LANDMARKED) RESTAURANT PIER A (LANDMARKED) N 0' 50' 100' 200' 59 UNDERSTANDING THE SITE Castle Clinton National Monument ARCHITECT: JOHN MCCOMB JR.