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.