To ask Her Majesty's Government further to the Written Answer by Lord Adonis on 24 November (WA 255-56), how much contaminated and non-contaminated soil and waste material has been removed from the Stratford Olympic Park site (a) by rail, (b) by road and (c) by water.[HL79]

Of a total 2.3 million cubic metres (m³) of material which will be excavated on the Olympic Park, it is anticipated that 920,000 m³ of this will be contaminated material in need of remediation. Based on current trends, it is anticipated that no more than 15 per cent (about 330,000 m³) of the total 2.3 million m³ of excavated material will go off-site as waste to landfills because it is contaminated material or non-treatable/geotechnically unsuitable material.

To date, no contaminated or non-contaminated soil and waste material has been removed by rail or water. The ODA has removed 80,000 m³ of hazardous, untreatable, and geotechnically unsuitable—but waste acceptance criteria (WAC) compliant—material by road, and 190,000 m³ of filter cake, including entrained water, by road.

Off-site disposal of some material is necessary because either it is not practical to reuse the material—non-treatable or geotechnically unsuitable for reuse—or because it is hazardous material which cannot remain on-site.