"(2) 'Contaminated land' is any land which appears to the local authority in whose area it is situated to be in such a condition, by reason of substances in, on or under the land, that — (a) significant harm is being caused or there is a significant possibility of such harm being caused; or (b) pollution of controlled waters is being, or is likely to be, caused; ... "
"(7) 'Remediation' means — (a) the doing of anything for the purpose of assessing the condition of — (i) the contaminated land in question; (ii) any controlled waters affected by that land; or (iii) any land adjoining or adjacent to that land; (b) the doing of any works, the carrying out of any operations or the taking of any steps in relation to any such land or waters for the purpose — (i) of preventing or minimising, or remedying or mitigating the effects of, any significant harm, or any pollution of controlled waters, by reason of which the contaminated land is such land; or (ii) of restoring the land or waters to their former state; or (c) the making of subsequent inspections from time to time for the purpose of keeping under review the condition of the land or waters; and cognate expressions shall be construed accordingly."
"(1) This section has effect for the purpose of determining who is the appropriate person to bear responsibility for any particular thing which the enforcing authority determines is to be done by way of remediation in any particular case. (2) Subject to the following provisions of this section, any person, or any of the persons, who caused or knowingly permitted the substances, or any of the substances, by reason of which the contaminated land in question is such land to be in, on or under that land is an appropriate person. (3) A person shall only be an appropriate person by virtue of sub-section (2) above in relation to things which are to be done by way of remediation which are to any extent referable to substances which he caused or knowingly permitted to be present in, on or under the contaminated land in question. ..... (10) A thing which is to be done by way of remediation may be regarded for the purposes of this Part as referable to the presence of any substance notwithstanding that the thing in question would not have to be done — (a) in consequence only of the presence of that substance in any quantity; or (b) in consequence only of the quantity of that substance which any particular person caused or knowingly permitted to be present."
"706. Crest's witness accepted that the removal of the hardstanding and buildings has meant that greater infiltration occurred than otherwise would have done. Whilst he maintained that there were insufficient data to quantify the movement of contaminants, he agreed that Crest's actions meant that contamination would be washed further into the soil below the land than would otherwise have been the case. Although he contended that the degree of movement, in the pore spaces, would be slow, he acknowledged that this was not the case in the fissure system (except in the case of small fissures, the number of which he was unaware) or in the gravels. 707. Given that this contamination is washed downwards, it would constitute the uppermost layer, wherever it is washed down to. Consequently, to the extent that the land is now contaminated, it must derive in part from this washed-down contamination which is the last to leave the site. 708. Had the buildings and hardstanding not been removed then, when it came to removal of the soil, this upper level of contamination would have been in greater concentrations and removed by the excavation. This was agreed by Crest's witness under cross-examination. Looked at in this way, as the witness acknowledged, it would be right to say that Crest's actions had caused contamination to be in the land that would not otherwise have been there. The [Environment Agency] also saw the 'logic' of this analysis. 709. This is, of course, the analysis also undertaken by Redland's witness and expanded upon in her evidence in chief. As a result, it is quite clear that Crest caused the land to be contaminated land. 710. It may be said, by Crest, that the extent of the contamination which they caused was only small. Even if right, the point is irrelevant. It is the substances that lead to the ascription of the land as contaminated land which are important, not the amount. So long as it is not de minimis, which Crest do not assert, the contamination caused by Crest must be taken into account. The issue of the amount of the contamination is only relevant if Crest are in the same … group as another Class A person. 711. Consequently, as a result of either knowingly permitting the bromide contamination or causing a part of it, Crest are part of the Class A group [i.e. as an appropriate person for the purposes of liability under the remedial regime in the 1990 Act] for the bromide significant pollutant linkage."
"28. The Secretary of State agrees with the Inspector's conclusions and finds that both Redland and Crest have been correctly identified as the members of the Class A liability group: IR [Inspector’s Report]/891 - 895 and 937 - 938. 29. The Secretary of State has not formally considered the question of whether either party knowingly permitted either contaminant to be in, on or under St Leonard's Court. Having found that both parties caused both contaminants, the test of 'knowingly permit' is superfluous when considering membership of the liability group in this case. However, the Secretary of State would have been minded to agree with the conclusions of the Inspector at IR904-936 as to why the test of 'knowingly permit' could also be considered to apply. 30. In its representations Crest suggests that it cannot be considered to have 'caused' bromate or bromide because it did not cause either contaminant to enter the site. The Secretary of State considers this argument to be based upon a misunderstanding of the test of 'caused or knowingly permitted'. A party does not need to have introduced a contaminant to a site to have caused it to be in, on or under the land. Furthermore, paragraph 9.9 of Annex 2 of Circular 02/2000 clarifies that a party can be found to have caused contamination through both action and inaction. Crest as a result of action and inaction in the way it dealt with the site caused contaminants that would otherwise have been removed to remain and also caused contaminants to be flushed deeper and faster into the ground. 31. Crest's representations also argue that it cannot be considered to have 'caused' either contaminant as it has not been demonstrated that any of the additional contamination resulting from Crest's actions was still present when St Leonard's Court was identified as being contaminated land. The Secretary of State does not accept this line of reasoning. Crest's actions affected the general body of contamination at the site (causing the contaminants to penetrate deeper and faster into the soil and underlying geology across the site). Moreover, there is no evidence that at the time of identification that entry of contamination into the aquifer had ceased and, as referred to in paragraph 19, the latest water monitoring data suggests that it is still ongoing to date. 32. It is noted that the Environment Agency in serving the remediation notice did not consider that Crest caused bromate to be in, on or under St Leonard's Court (IR190). The Secretary of State, like the Inspector, having considered all the evidence takes a different view. Moreover, in response to the IR the Environment Agency asked the Secretary of State to proceed to determine the appeals 'in line with the conclusions and recommendations of the Inspector'."