Introductory Briefing: Transport

Transcription

1 Sustainable drainage systems (SuDS) - Changes for highways managers 19 May 2011 Introductory Briefing: Transport Phil Chatfield - Welsh Assembly Government

2 SuDS a new role Presentation overview Background SuDS approving body SuDS Standards Resources and communications Granada, Spain

3 SuDS a new role Background SuDS approach well understood But uptake has been limited Issues with adoption & maintenance Flood & Water Management Act Elvetham Heath, Hampshire

4 SuDS a new role Background Schedule 3 provisions SuDS Approving Body (SAB) established Requirement for National Standards Links to planning process Amended right of connection Lamb Drove, Cambourne

5 SuDS a new role SuDS approving body (SAB) Responsibility of upper tier LA Lead local flood authority Approval of drainage schemes Adoption and maintenance of public SuDS SUDS at Midlands School

6 SuDS a new role SuDS approving body (SAB) May delegate roles Both approval & maintenance But will retain responsibility Collaborative working encouraged Wheatley services

7 SuDS a new role SuDS approving body - approvals No construction before approval Two applications routes With planning application Free standing Pre-application discussion encouraged Swale, Dundee

8 SuDS a new role SuDS approving body - approvals Application fees Timing linked to planning Statutory consultees Financial bond Conditional approval BedZed site, Croydon

9 SuDS a new role SuDS approving body - adoption Inspection during construction Adoption on completion for public SuDS Protection of SuDS Maintenance duty Bioretention,, Sydney

10 SuDS a new role SuDS approving body - roads Roads adopted by highways authority May require special engineering designation SuDS function must be maintained No amendment without approval Permeable paving, Banbury

11 SuDS a new role SuDS approving body - funding SAB can charge approval fees Inspection fees Cost recovery basis Maintenance funding from WAG initially Developing long term funding options A90, Dundee

12 SuDS standards & guidance Progress with National Standards For Welsh Ministers approval Draft under development with Defra Project Advisory Panel Formal consultation planned DEX site, Dunfirmline

13 SuDS standards & guidance Progress with National Standards Overarching principles 1 Reducing flood risk & improving water quality Environment Health & safety Consider drainage early in design Close to source On the surface

14 SuDS standards & guidance Progress with National Standards Overarching principles 2 Use of multi-functional spaces Stability & durability Local documents Not to foul sewer Lifetime design Climate change Future development Local park, Greenwich

15 SuDS standards & guidance Progress with National Standards Frameworks for: Runoff destination Peak flow rate & volume Water quality Layout & location Bioretention

16 SuDS standards & guidance Progress with National Standards Discretionary Biodiversity Amenity Material use Linked to local: Planning frameworks FRM strategy Biodiversity Action Plans Swale, Sheffield

17 SuDS standards & guidance Progress with National Standards Frameworks example runoff destination Level 1 Discharge into the ground Level 2 Discharge to a surface water body Level 3 Discharge to a surface water sewer Level 4 Discharge to a combined sewer Swale, Queensland

18 SuDS standards & guidance Resources and communications Wide range of technical guidance Design Manual for Roads & Bridges CIRIA SuDS Manual CIRIA web site Infiltration Basin Design, DMRB

19 SuDS standards & guidance Resources and communications National Standards Government guidance Links to further information Training materials Cambridge Design, Guide

20 SuDS standards & guidance Resources and communications SuDS Wales groups Web site Groundwater risk assessment EA on-line training Green roof, Cardiff Library

21 SuDS standards & guidance Resources and communications Flood & Water Management Act training Joint workshops SuDS in April SCOTS guide

22 SuDS standards & guidance Resources and communications Consultation is next step Seek views on standards Working with WLGA Articles and conferences Green Roof, Riverhead School, Kent

23 SuDS standards & guidance Presentation summary Background SuDS approving body SuDS standards Resources and communications Flooding, Shrewsbury

24 Sustainable drainage Systems (SuDS) - Changes for highways managers Introductory Briefing: Transport Thank you Phil Chatfield