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Low Impact Development and Sustainable Stormwater Management

  • ID: 2174688
  • Book
  • July 2012
  • 312 Pages
  • John Wiley and Sons Ltd
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The comprehensive guide to understanding and implementing sustai able stormwater solutions

A practical introductory look at the methods and materials used in twenty–first century site design, Low Impact Development and Sustainable Stormwater Management familiarizes readers with new and emerging ideas and techniques for using rainfall runoff in a more ecologically friendly fashion. Since rainfall is the ultimate source of our water supply, treating it as a finite resource is critical if we are to meet current and future human water needs, and this reference volume explains how.

Providing detailed coverage of the design process and construction concerns related to sustainable stormwater management, the book illustrates concepts through the extensive use of photographs, real–world examples of built projects, and engineering details and calculations, including worksheets and specifications. Proposing and presenting innovative engineering design ideas that differ from traditional approaches to stormwater management techniques, including maximizing vegetative cover and the use of infiltration systems, the book is a comprehensive reference on ecologically sustainable approaches to making the most of rainfall.

Multidisciplinary in its approach, Low Impact Development and Sustainable Stormwater Management presents insights from landscape architects, planners, and scientists, making it an indispensible resource for anyone interested in managing rainfall runoff, from engineers and designers to developers, regulators, and students.

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Prologue: Habitat, Sustainability, and Stormwater Management xi

Acknowledgments xiii

1 Rainwater as the Resource 1
1.1 The Water Balance as a Guide for Sustainable Design 1
1.2 The Water Balance by Region 7
1.3 Arid Environments: The Southern California Model 11
1.4 The Altered Water Balance and Hydrologic Impacts 16
1.5 The Impacts of Development on the Hydrologic Cycle 24
1.6 The Historic Approach: Detention System Design 27
1.7 Stormwater Volume Methodologies 30

2 Stormwater Hydrology and Quality 33
2.1 Overland Flow: The Beginning of Runoff 33
2.2 Regional Hydrology 35
2.3 Stormwater Volume 39
2.4 The Water Quality Impacts of Land Development 40
2.5 The Chemistry of Urban Runoff Pollution 44
2.6 Understanding Pollutant Transport in Stormwater 47

3 Land as the Resource 51
3.1 Historic Patterns of Land Development 51
3.2 Sustainable Site Design 58
3.3 Watershed Setting and Physical Context 58
3.4 Smart Growth Issues 59
3.5 Conflict Between Desired Land Use and Sustainability 61
3.6 Physical Determinants of Land Development 62
3.7 Urban Communities with Combined Sewer Overflows 68
3.8 The Living Building and Zero Net Water Use 74

4 The Planning Process for LID 79
4.1 Sustainable Site Planning Process with Stormwater Management 79
4.2 Overview of the Site Design Process for LID 86

5 The Legal Basis for LID: Regulatory Standards and LID Design Criteria 95
5.1 The Land Water Legal Process 95
5.2 The Evolution of Land Development Regulation 98
5.3 The Regulatory Framework 100
5.4 Stormwater Management Regulations 105

6 LID Design Calculations and Methodology 113
6.1 Introduction to Stormwater Methodologies 113
6.2 Existing Methodologies for Runoff Volume Calculations 114
6.3 Existing Methodologies for Peak–Rate/Hydrograph Estimates 120
6.4 Computer Models 121
6.5 Precipitation Data for Stormwater Calculations 123
6.6 Accounting for the Benefits of LID: Linking Volume and Peak Rate 124
6.7 Recommended LID Stormwater Calculation Methodology 124
6.8 Nonstructural BMP Credits 127

7 Design of LID Systems 131
7.1 Nonstructural Measures 131
7.2 Structural Measures 133
7.3 Pervious Pavement with an Infiltration or Storage Bed 134
7.4 Bioremediation 145
7.5 Vegetated Roof Systems 152
7.6 Capture Reuse 158

8 Structural Measures: Construction, Operation, and Maintenance 169
8.1 Porous Pavement Systems 169
8.2 Bioremediation Systems 179
8.3 Capture Reuse Systems 188

Appendix A: The Stormwater Calculation Process 193

Appendix B: Case Studies 213
B.1 The Transition from Research to Practice 213
B.2 Manuals 215
B.3 LID Manual for Michigan (2008) 219
B.4 Models and Watershed Studies 237
B.5 Design and Construction Projects 251

Index 283

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Thomas H. Cahill
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