1. Planning and Sustainability Seminar A Systematic and Integrated Drainage Approach Jessica Johns Micro Drainage Limited

2. Minor 1D Below Ground Urban Engineered SFA6/Building Regs Major 2D Above Ground Rural Environmental Impacts PPS25/TAN15

3. Integrated Approach Minor 1D Below Ground Urban Engineered SFA6/Building Regs Major 2D Above Ground Rural Environmental Impacts PPS25/TAN15 ////////////

4. The Pitt Review - Thatcham July 2007 – 1,107 homes flooded 200(+) year return period rainfall Traditional drainage Model matched event

5. Thatcham

6. IUD - Upton Integrated Urban Drainage Approach Sustainable Drainage Systems in place Tested with extreme flood event Flooding much less severe - follows the swales Case Study in CIRIA C635

7. Upton

9. Planning Think about drainage early Load Digital Terrain Model Deluge site with extreme rainfall Identify ‘Blue Corridors’ / Flow Routes

10. Holistic & Integrated Approach Assess pre-development runoff rates/volumes Design flow conveyance system Limit post-development runoff Incorporate SUDS for attenuation & infiltration

11. Testing for Exceedance Model overland flow paths for exceedance return period with Climate Change

12. Conclusion Planning Guidance is key Technology is available Systematic and Integrated approach with early planning