A LOW IMPACT DEVELOPMENT MANUAL FOR COASTAL SOUTH CAROLINA TABLE OF CONTENTS

Transcription

1 A LOW IMPACT DEVELOPMENT MANUAL FOR COASTAL SOUTH CAROLINA TABLE OF CONTENTS Chapter 1: 1.1 to LID 1.2 Manual Purpose and Application 1.3 Environmental Benefits of LID 1.4 Economic Benefits of LID Case Study: Rivertowne Harris Teeter 1.5 Coastal Features and LID Flat Terrain High Water Table Altered Drainage Poorly Drained Soils Very Well-Drained Soils Drinking Water Wells and Septic Systems Conversion of Croplands with Land Application Pollutants of Concern Unique Development Patterns Shoreline Buffers and Critical Areas The Highway as a Receiving System Hurricanes and Flooding 1.6 Planning for Future Conditions Sea Level Rise Drought and Wetter Conditions Stormwater Management 1.7 References Chapter 2: Strategies for Local Governments 2.1 Getting Ready for Low Impact Development 2.2 Applicable Regulations and Requirements for Stormwater and LID Federal and State Regulations Local Regulations and Ordinances 2.3 Planning Strategies Code and Ordinance Checklist Coastal Community Watershed Management Checklist Benefits and Practical Applications for the Coastal Community Watershed Management Checklist Planned Unit Development 2.4 Regulatory Strategies Site Plan Review Process Tracking, Inspection and Verification Enforcement 2.5 References

2 Chapter 3: Site Assessment and Design for Low Impact Development 3.1 to Site Assessment and Design 3.2 Conservation Principles for Coastal SC Land Conservation Preserve and Maintain Open Space Case Study: Spring Island Protect Critical Resources Case Study: Northern Beaufort County Regional Plan Preserve Native Vegetation and Soils Case Study: Coastal Wetlands and Climate Change Promote Buffers Protect Tree Canopy Case Study: Oak Terrace Preserve Reduce Impervious Cover Case Study: Coastal Waccamaw Council of Governments Planning for Future Growth Conditions and Patterns Conservation, Land Use, and Stormwater Incentives Case Study: Laurel Oak Grove 3.3 Neighborhood Site Design considerations for Coastal SC LID and Compact Development Planned Development District (PUD) 3.4 LID Roadway Design Street Widths Right-of-Way Width Cul-De-Sacs and Alternate Turnarounds Intersection Geometry Curb Requirements Sidewalks Driveway Design Summary 3.5 LID Parking Guidance Alternative Parking Surfaces Parking Ratios Case Study: Greenville, SC Parking Study Shared and Off-site Parking Stall and Aisle Geometry Parking Lot Landscaping Case Study: 15 George Street Parking Lot 3.6 Incorporating LID into Existing Development Retrofitting Infill Development Case Study: Bojangles Restaurant 3.7 LID Landscaping Benefits General Standards Soil Preparation Mulching Vegetation Installation Recommendations Maintenance

3 3.8 References Chapter 4: Guide to Stormwater Best Management Practices 4.1 LID Design Considerations for Coastal Conditions Site Conditions Treatment Capability Physical Feasibility Site Applicability 4.2 Bioretention Bioretention Feasibility Criteria Bioretention Conveyance Criteria Bioretention Pre-treatment Criteria Bioretention Design Criteria Bioretention Landscaping Criteria Bioretention Construction Sequence Bioretention Maintenance Criteria Bioretention References 4.3 Permeable Pavement Permeable Pavement Feasibility Criteria Permeable Pavement Conveyance Criteria Permeable Pavement Pretreatment Criteria Permeable Pavement Design Criteria Permeable Pavement Landscaping Criteria Permeable Pavement Construction Sequence Permeable Pavement Maintenance Criteria Permeable Pavement References 4.4 Infiltration Infiltration Feasibility Criteria Infiltration Conveyance Criteria Infiltration Pretreatment Criteria Infiltration Design Criteria Infiltration Landscaping Criteria Infiltration Construction Sequence Infiltration Maintenance Criteria Infiltration References 4.5 Green Roofs Green Roof Feasibility Criteria Green Roof Conveyance Criteria Green Roof Pretreatment Criteria Green Roof Design Criteria Green Roof Landscaping Criteria Green Roof Construction Sequence Green Roof Maintenance Criteria Green Roof References 4.6 Rainwater Harvesting

4 Rainwater Harvesting Feasibility Criteria Rainwater Harvesting Conveyance Criteria Rainwater Harvesting Pretreatment Criteria Rainwater Harvesting Design Criteria Rainwater Harvesting Spreadsheet Rainwater Harvesting Landscaping Criteria Rainwater Harvesting Construction Sequence Rainwater Harvesting Maintenance Criteria Rainwater Harvesting References 4.7 Impervious Surface Disconnection Impervious Surface Disconnection Feasibility Criteria Impervious Surface Disconnection Conveyance Criteria Impervious Surface Disconnection Pretreatment Criteria Impervious Surface Disconnection Design Criteria Impervious Surface Disconnection Landscaping Criteria Impervious Surface Disconnection Construction Sequence Impervious Surface Disconnection Maintenance Criteria Impervious Surface Disconnection References 4.8 Open Channel Systems Open Channel Feasibility Criteria Open Channel Conveyance Criteria Open Channel Pretreatment Criteria Open Channel Design Criteria Open Channel Landscaping Criteria Open Channel Construction Sequence Open Channel Maintenance Criteria Open Channel References 4.9 Stormwater Filtering Systems Filtering Feasibility Criteria Filtering Conveyance Criteria Filtering Pretreatment Criteria Filtering Design Criteria Filtering Landscaping Criteria Filtering Construction Sequence Filtering Maintenance Criteria Stormwater Filtering Systems References 4.10 Dry Detention Practices Dry Detention Practice Feasibility Criteria Dry Detention Practice Conveyance Criteria Storage Pretreatment Criteria Storage Design Criteria Dry Detention Practice Landscaping Criteria Dry Detention Practice Construction Sequence Dry Detention Practice Maintenance Criteria Dry Detention Practice References 4.11 Wet Detention Ponds

5 Wet Detention Pond Feasibility Criteria Wet Detention Pond Conveyance Criteria Wet Detention Pond Pretreatment Criteria Wet Detention Pond Design Criteria Wet Detention Pond Landscaping Criteria Wet Detention Pond Construction Sequence Wet Detention Pond Maintenance Criteria Wet Detention Pond References 4.12 Stormwater Wetlands Wetland Feasibility Criteria Wetland Conveyance Criteria Wetland Pretreatment Criteria Wetland Design Criteria Wetland Construction Sequence Wetland Landscaping Criteria Wetland Maintenance Criteria Chapter 5: Case Studies 5.1 Charleston National Pond Floating Wetlands and Pond Buffers 5.2 Horry County Recycling Center Bioretention 5.3 Fox Hollow Low Impact Development 5.4 Moore Farms Botanical Garden Green Roof and Rainwater Harvesting 5.5 Trident Technical College Campus LID Initiatives 5.6 Goodwill Store Bioretention and Pervious Paving 5.7 Jarvis Creek Park Stormwater Pond & Wetland Project Appendices Appendix A: Compliance Calculator Overview Appendix B: Infiltration Testing Appendix C: Soil Ammendments Appendix D: Peak Flow Calculations Spreadsheets LID Compliance Calculator SC Rainwater Harvesting