sewer system investment/planning€¦ · investment/planning. 2 presentation outline the benefits...
TRANSCRIPT
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SEWER SYSTEM INVESTMENT/PLANNING
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Presentation OutlineThe Benefits of Sewer System Planning Sewer System Planning BasicsA Case Study
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BenefitsPreservat ion of alignment routes Out fall and downline cost allocat ionGrowth/Landuse influence/controlEconomic development investment
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Sewer System Planning Basics
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Intersect GIS Layers to Create Development Constraints Wetlands Flood Plain Stream Buffers Occupied Property Low Structure Value Property Land Use / Zoning Designation /
Density
Results Developable Acres by Land Use 3,000 Monthly Demand per ERU Total Sewer Demand by Analysis
Zone
IDENTIFY POTENTIAL GROWTH AREAS
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Growth Area Indicators Red = High Density Rat io Orange = Med-High Density Rat io Yellow = Med-Low Density Rat io Green = Low Density Rat io
Flow Project ions ERU = 100gpd Apply Growth Project ions to Sewer
Demands
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Create Sewer Analysis Zones Using Elevation & Natural
Boundaries
Elevation (Color Mapped) Major Roadway Boundaries Sanford ETJ 2 Mile ETJ Buffer Project Area Traffic Analysis Zones Common Geographic Areas
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Case Study –Kernersville Sewer System Investment Plan (SSIP)
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The Basics
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Area 25
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Area 25
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Area 25
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Area 25
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Area 25
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Area 25
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$200/ft for Gravity Construct ion (based on 8-inch ductile iron)$2,500 per Manhole (spacing used was 300 ft )$300,000 for each Pump Stat ion (85 GPM size)$60/ft for Force Mains (based on 4-inch diameter)$600/ft for Bored Crossings$300/ft for Stream Crossings$3/ft for Permanent Easements$1.50/ft for Temporary Easements
Costs considerations
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Questions
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