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SuDS in London - a guide

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Contents<br />

3 Introduction<br />

I. Background<br />

II. Who is the guidance for?<br />

III. Surface water and <strong>SuDS</strong><br />

IV. A <strong>SuDS</strong> approach<br />

V. How should I use the guidance?<br />

VI. Structure of the guidance<br />

7 Pr<strong>in</strong>ciples of <strong>SuDS</strong><br />

1.1 Plann<strong>in</strong>g for <strong>SuDS</strong><br />

1.2 Wider benefits<br />

1.3 The four pillars of <strong>SuDS</strong><br />

1.3.1 Water quantity<br />

1.3.2 Water quality<br />

1.3.3 Amenity<br />

1.3.4 Biodiversity<br />

16 The <strong>London</strong> context<br />

2.1 What is unique about <strong>London</strong>?<br />

2.2 The Thames River Bas<strong>in</strong><br />

2.3 <strong>London</strong>’s geological conditions<br />

2.4 <strong>London</strong>’s chalk aquifer<br />

2.5 <strong>London</strong>’s soils<br />

2.6 Streetscapes of <strong>London</strong><br />

2.7 Townscape<br />

2.8 Retrofitt<strong>in</strong>g<br />

2.9 <strong>London</strong>’s green <strong>in</strong>frastructure<br />

2.10 Trees<br />

2.11 Work<strong>in</strong>g with <strong>London</strong>’s utilities<br />

2.12 Contam<strong>in</strong>ation<br />

2.13 Archaeology<br />

2.14 Crime and disorder<br />

2.15 Highways and plann<strong>in</strong>g<br />

2.16 Inclusive design<br />

29 <strong>SuDS</strong> components<br />

3.1 Which <strong>SuDS</strong> components are<br />

suitable for <strong>London</strong>?<br />

3.2 Structures<br />

3.3 Infiltration systems<br />

3.4 Filter strips<br />

3.5 Filter dra<strong>in</strong>s<br />

3.6 Wet swales and dry swales<br />

3.7 Rills, runnels and<br />

channel systems<br />

3.8 Bioretention systems<br />

3.9 Trees<br />

3.10 Permeable pav<strong>in</strong>g<br />

3.11 Detention bas<strong>in</strong>s<br />

3.12 Attenuation and storage<br />

3.13 Ponds and wetlands<br />

3.14 Management and ma<strong>in</strong>tenance<br />

65 <strong>SuDS</strong> on <strong>London</strong>’s streets<br />

4.1 <strong>SuDS</strong> and the urban realm<br />

4.2 Street scenarios<br />

75 Case studies<br />

Case study <strong>in</strong>dex<br />

125 Implementation<br />

6.1 Implementation<br />

6.2 <strong>SuDS</strong> design team<br />

6.3 Dra<strong>in</strong>age hierarchy<br />

131 Cost benefit<br />

7.1 Cost benefit<br />

7.2 Methodology<br />

7.3 Design life<br />

7.4 Cost comparison<br />

7.5 Best value<br />

137 Appendices<br />

Further <strong>in</strong>formation<br />

Glossary

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