Rehabilitating the London 2012 Olympic Park site

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Three key members of the Atkins London 2012 team - James Apted, Ian Morrissey and Ian Mead - give a brief overview of the challenges involved in remediating the London 2012 Olympic Park site ready for the Games. At 246 hectares, it was one of the largest land remediation projects undertaken in the UK to date.

Our work included soil washing, bioremediation, groundwater treatment, wetland planting, river edge engineering and ecology.

This presentation was first delivered in October 2013.

Published in: Engineering, Technology
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Rehabilitating the London 2012 Olympic Park site

  1. 1. Rehabilitating the London 2012 Olympic Park site Chinese media delegation briefing Atkins Lectures
  2. 2. James Apted, Ian Morrissey, Ian Mead 11 October 2013
  3. 3. The challenges Delivered on time, on budget and to the standard required by follow on contractors. Contamination Occupation Scale Minimising disruption to communities
  4. 4. Soil washing Over 2.2M m3 of soil was excavated to create the site platform. In total over 900,000 m3 was treated of which 700,000 m3 was soil washed, which produces sand and gravel fractions for re-use.
  5. 5. Bioremediation Alternative remediation techniques were also used such as bioremediation, which is good at treating organic contamination. However it takes 6-8 weeks per treatment batch. 30,000m3 of soil was treated by this process.
  6. 6. Groundwater treatment Overview Free product removal: 2,500 litres Pump and treat schemes: 235,000 cubic metres Diluted chemical reagents injected: 1,260 tonnes CZ3a Hydraulic Containment CZ3 ISCO Round 1 CZ5a Perched water cut-off wall & GWTP CZ6d Perched water cut-off wall CZ6a/d Pump & Treat CZ1a DPVE ORS injection NAPL recovery CZ3a ISCO Round 2 CZ3a Thanet Sands DNAPL removal EVO Injection CZ8a EHCM injection
  7. 7. Cleaning the Olympic Park
  8. 8. Wetlands and river edges Sustainable design Wetland planting trials where undertaken during the enabling works to inform habitat design and future management requirements. This led to the selection of species and installation methods which would ensure biodiversity objectives were met for the Games and as a legacy.
  9. 9. Ecological heritage Creating opportunities for wildlife through integrated habitat design within hard and soft landscaping elements.
  10. 10. Transformation Landscaping extension The landscaping has developed further in transformation via the removal of temporary venues and walkways. This has included the planting of 2,000 trees and the creation of 10 hectares of meadows and lawns.
  11. 11. Transformation Protection of remediation Atkins is currently on site on the Queen Elizabeth Olympic Park ensuring that the existing remediation works are appropriately protected.
  12. 12. North Park in legacy
  13. 13. For more information contact James Apted james.apted@atkinsglobal.com
  14. 14. Celebrating 75 years of design, engineering and project management excellence. www.atkinsglobal.com

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