The Role Of Green And Grey Infrastructure In - PowerPoint PPT Presentation

The ¡Role ¡Of ¡ “ Green ” ¡And ¡ “ Grey ” ¡ Infrastructure ¡In ¡Crea7ng ¡Resilient ¡ Communi7es ¡ ¡-­‑ ¡ New ¡Planning ¡Paradigms ¡-­‑ Bill Cesanek, AICP CDM Smith, Inc. PlanSmart 2013 NJ Regional Planning Summit Investing in the New Normal April 30, 2013

Coastal Resiliency Issues • Hazard mitigation strategies or actions are typically focused on a disconnected series of emergency services, structure or infrastructure protection projects, and public outreach and reconstruction initiatives • More emphasis needs to be placed on non-structural measures available through local land use planning or policy alternatives • Hazard mitigation plans are typically stand-alone documents that cover multiple jurisdictions • Directly link / integrate hazard reduction with other community-specific planning tools such as comprehensive land use plans and development regulations. http://www.ie.unc.edu/cscd/projects/pdf/Berke.Lyles.Smith_CRSDMA_ResearchSummary.pdf

Intersections between coastal smart growth & hazard mitigation strategies http://coastalsmartgrowth.noaa.gov/pdf/hazard_resilience.pdf

Photo courtesy of Leah Bray CONSERVATION STRATEGY FOR THE MISSISSIPPI GULF COAST Technical Advisory Committee

Identifying Critical Natural Resources in Coastal Mississippi 25% Wetlands 35% NWI 45% CCAP Wetlands 20% Hydric Soils 10% Hydrologic Soil Groups 20% Flood Zones 25% Elevation/Slope 55% Elevation (DEM) 45% Slope 20% Evergreen Forest 100% Total of Categories

Conservation Lands Mapping Lowlands – Gulfport Area

• Philadelphia created the first Combined Sewer Overflow Long- Term Control Plan in the country to focus on green stormwater infrastructure • Creates long-term strategic investments in community and economic development

NATURAL ¡vs. ¡URBAN ¡STORMWATER ¡DRAINAGE ¡ 40% evaporation 30% evaporation 55% runoff 10% runoff 25% shallow 10% shallow 25% deep 5% deep infiltration infiltration infiltration infiltration Natural ¡Ground ¡Cover ¡ City ¡SeIng ¡70-­‑100% ¡impervious ¡surface ¡area ¡ Water ¡hits ¡impervious ¡surface ¡and ¡ Stormwater ¡infiltrates ¡into ¡the ¡ runs ¡off ¡roofs, ¡streets, ¡parking ¡lots ¡etc. ¡ ¡ ground ¡ Runoff ¡goes ¡into ¡the ¡sewers ¡ Plants ¡and ¡trees ¡work ¡to ¡absorb ¡ stormwater ¡ ¡ http://www.nrcs.usda.gov/technical/stream_restoration/Images/scrhimage/chap3/fig3-21.jpg

9,500 ¡Impervious ¡Acres ¡Become ¡ “ Greened ¡Acres ” ¡ • Public: invests in creating green stormwater infrastructure • Private: apply strong stormwater regulations for development • Standardize green infrastructure for all city projects

EIGHT ¡GREEN ¡PROGRAMS ¡ ¡ ¡ ¡ ¡ Public Lands Saylor ¡Grove ¡Stormwater ¡Wetland ¡ • Streets • Schools • Public Facilities • Open Spaces Springside ¡School ¡ “ Water ¡Wall ” ¡and ¡Rain ¡Garden ¡ Private Lands Friends ¡Center ¡Green ¡Roof ¡ • Industrial/Commercial/Institutional • Homes • Parking • Alleys, Driveways and Walkways

7 th ¡and ¡Washington ¡

GreenPlan ¡Philadelphia ¡

Some Resiliency Strategies • Prioritize funding for hazard mitigation strategies that emphasize smart growth benefits while simultaneously protecting against future hazards. • Provide credits for smart growth strategies implemented outside of flood zones that reduce impacts on the floodplain through FEMA ’ s Community Rating System. • In local and county plans, address infrastructure investments that reduce risk and are aligned with other local hazard mitigation plans. • Include information about projected future risks, such as floods and storm frequency, when developing future land use plans. http://coastalsmartgrowth.noaa.gov/pdf/hazard_resilience.pdf

More Resiliency Strategies • Consider long-term climate change impacts in planning, design, and cost determination for infrastructure, such as roads, water and wastewater systems, and electric utilities. • Consider the connections between ecosystem buffers and restoration, and hurricane protection • Shift to more integrative planning – including natural resource buffer protection, infrastructure resiliency, and future risk/uncertainty. http://coastalsmartgrowth.noaa.gov/pdf/hazard_resilience.pdf