Atkins Lectures Rehabilitating the London 2012 Olympic Park site Chinese media delegation briefing
James Apted, Ian Morrissey, Ian Mead 11 October 2013
The challenges Minimising Contamination Occupation Scale disruption to communities Delivered on time, on budget and to the standard required by follow on contractors.
Soil washing Over 2.2M m 3 of soil was excavated to create the site platform. In total over 900,000 m 3 was treated of which 700,000 m 3 was soil washed, which produces sand and gravel fractions for re-use.
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. 30,000m 3 of soil was treated by this process.
Groundwater treatment Overview CZ6a/d Pump & Treat CZ5a Perched water cut-off wall & GWTP CZ6d Perched CZ3a Hydraulic CZ3 ISCO water cut-off wall Containment Round 1 CZ1a DPVE ORS injection NAPL recovery CZ3a ISCO Round 2 Free product removal: 2,500 litres CZ3a Thanet Pump and treat schemes: 235,000 cubic metres Sands DNAPL removal Diluted chemical reagents injected: 1,260 tonnes EVO Injection CZ8a EHCM injection
Cleaning the Olympic Park
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.
Ecological heritage Creating opportunities for wildlife through integrated habitat design within hard and soft landscaping elements.
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.
Transformation Protection of remediation Atkins is currently on site on the Queen Elizabeth Olympic Park ensuring that the existing remediation works are appropriately protected.
North Park in legacy
For more information contact James Apted james.apted@atkinsglobal.com
Celebrating 75 years of design, engineering and project management excellence. www.atkinsglobal.com
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