San Antonio Low Impact. Development

Transcription

1 San Antonio Low Impact Our objective is to provide a redevelopment catalyst for the Kelly Center Property, the heart of Port San Antonio. The Billy Mitchell Village redevelopment is to drive inspirational and sustainable approaches and solutions for future redevelopment of the Port. Development

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3 DEVELOPMENT CONCEPT

4 DEVELOPMENT CONCEPT

5 OPEN SPACE Sustainable Benefit Parks develop a sense of community Reduces pollutants Recreational facilities = increased property value. Residents feel safer. open spaces = more infiltration and filtration of runoff No urban heat effect

6 Description Addition of over 125,000 square feet of Retail/Office 82,900 sf Retail 44,800 sf Retail/Service Office Increased number of residential units by 164 (538 Total) 458 Flats 16 Live over Work Units 64 Townhomes LID and Billy Mitchell Village Hydrological Impacts/Benefits Existing (undeveloped) Developed Team Total Site Area (ac) Sustainable Benefit Additional residential units increases demand for retail and services Retail and Office users also bring outside revenue into the community Added users adds more vitality to the area Impervious Cover Total Site 0% 59% Composite Curve Number (CN) 74 Without LID control 88.5 With LID controls 73 Storage available onsite (inches) 3.51 Without LID control 1.18 With LID controls 3.75 Rainfall yr (in) Runoff Volume Runoff Volume increase (-reduction) Volume (ac-ft) 1.1 Percent Capture of 85% Storm 100% Water Quality No Structures - Just Vegetation LID "treatment train" - Superior TSS (% Removal Range) Dissolved (N and P) (% Removal Range) Oil and Grease (% Removal Range) 5 90

7 LOW IMPACT DEVELOPMENT LID remediates polluted runoff through a network of treatment landscapes, with distributed redundant, and resilient properties. Our solution is to develop a stormwater infrastructure that is planned to deliver valuable ecological benefits to botanize the Billy Mitchell Village. Rainwater collection Bioswales and rain gardens offer a natural process of water filtration. These techniques allow water to flow through vegetation and meander down the treatment train allowing pollutants to be extracted from the water and caught by the various obstacles before it seeps back into the ground. In lieu of traditional end of pipe techniques, a kit of parts that includes but not limited to: Rain-gardens/Bio-filtration Wet Vaults Permeable Friction Course Pavement Vegetative Swales Rainwater Harvesting

8 LOW IMPACT DEVELOPMENT In lieu of traditional end of pipe techniques, a kit of parts.

9 LOW IMPACT DEVELOPMENT Description LID is an ecologicallybased stormwater management approach favoring soft engineering to manage rainfall on site with integrated landscaping. LID maintains predevelopment hydrology by using techniques that infiltrate, filter, store and evaporate stormwater runoff close to its source. Sustainable Benefit increased pollutant removal enhanced recharge enhanced aesthetics safety from hydroplaning flood attenuation improved water quality habitat re-establishment reduced long-term maintenance extended base flow reduced potable water requirements for irrigation reuse existing road materials Cost/Benefit Cost Conventional development and LID are comparable in overall costs. Benefit Total benefit LID features are smaller footprint features that are more flexible in position with treatment resulting in water quality improvements greater than single purpose treatment pond. Environmental address water quality at source decrease velocity reduce upland habitat impacts reduce downstream erosion improve groundwater recharge improve aquatic habitat reduced runoff volumes less pollutant loadings downstream extended base flow Social improve site aesthetics enhance public awareness expanded recreational opportunities Economic reuse existing road materials reduced long-term maintenance increased property values reduce potable water requirements for irrigation

10 CONSTRUCTION METHODS AND MATERIALS Description We propose the project utilize the following methods and materials to reach sustainable goals: Recycle Existing Materials on the Project Salvage Existing Materials for Reuse Minimize Construction Debris Zero Waste to the Landfill LID Stormwater Infiltration Precast Concrete Incorporate roundabouts LED Signals and Streetlights Renewable Energy Low Maintenance Landscaping Sustainable Benefit Reduced consumption of natural resources, energy consumption, emissions and water use Less erosion Recycles waste and construction demolition Promotes on-site renewable energy Cost/Benefit Cost Lower shipping cost. Less landfill costs. Reuse of material reduces costs for new materials. Benefit LEED certification Improves productivity and health Less energy consumption therefore less energy production costs

11 UTILIZING EXISTING URBAN FRAMEWORK Saves Money and Time Flexible Phasing options

12 RE-DEFINED RIGHT OF WAY ELEMENTS Green Streets help decentralize storm water collection. Permeable pavement allows for capture of water at the source.

13 RETAIL DEVELOPMENT

14 MULTI-MODAL SYSTEMS Sustainable Benefit Economic Development Decreases Traffic Congestion Reduces Sprawl Sustainable Benefit Households that use public transportation save more than $10k / year. Households near public transit drive an average of 4,400 fewer miles, thus saving 223 gal/year per household.

15 NEW TRANSIT AND PARK & RIDE Description The Transit and Park & Ride facility provides for reuse of existing tracks located within Billy Mitchell Blvd. allowing for trolley car to connect the entire Port along with possible future connection to the Lone Star Rail station. Billy Mitchell Village Sustainable Benefit Reduced air pollution Less vehicles = less congestion Reduced parking needs Walkable communities Increases densities Adds economic vitality Benefit Increased Safety Improved mobility for economically disadvantaged Improved access to education and jobs Promotes cluster development Enhances community cohesion Reduces costs of public services Increased commerce and property values

16 PHASE ABILITY

17 COST ANALYSIS Conventional L.I.D. Storm Drainage 25% Architecture 15% Landscape 15% Hardscape 30% Storm Drainage 10% Architecture 15% Site Elements 15% Landscape 40% Site Elements 15% Hardscape 20%

18 A new... Billy Mitchell Village Why We propose that the Billy Mitchell Village project utilize the following methods and materials to reach sustainable goals: Environmentally and Ecologically Sound Sustainable Meets mobility requirements Embraces the community Mobility + Access = Land Use Efficiency Enhances property values Improves community image Encourages new and future LID Improved access Improvements Context sensitive solutions Low impact development improvements Decrease in impervious cover Improved water quality and environment Community open space and connectivity Multi-modal transportation opportunities Improved traffic movement Increase of 164 residential units Addition of over 125,000 sf of retail space Enhanced Value Adds economic vitality Protects and adds trees Improves water and air quality Reduces impervious footprint Improved storm water management and treatment Improved mobility and property access Connects the community Socially Culturally Economically Contextually

19 Thank You! Images contained within this presentation were derived from personal photography and drawing from team members, company stock photography and the following websites: ; l_images/ jpg; ; ; ; ; ; ; ; ; ; ; ; ; ; der_lg%2b%2528crown%2bstreet%252c%2bvancouver%2529.jpg ; ; ; ; ; ; ; ; ;