“4. Many landfills have been operating for a substantial period of time and it was in the past considered appropriate to allow leachate to be diluted and dispersed through underlying ground and sometimes thereafter through groundwater. That is not now permitted and should not have been allowed since 1980 when the Groundwater Directive came into force. Landfills are now constructed in cells which have a liner and a mechanism for collecting and removing leachate and gases. In some landfills, there are cells which do not have any liner or mechanism for collecting and removing leachate since they relied on the dilute and disperse method. Equally, there are in some landfills cells which are properly constructed. In either case, cells have been closed and no further use of them is planned. What the claimant seeks to do in the two sites with which this claim is concerned is to landfill so that the waste they deposit will overlap that in the existing closed cell, being above part of it. An angled liner which is strong enough and impervious so as to prevent leaching from the new waste through the old and compression of the old causing additional leaching from it is intended so that the new cell is independent of the old closed cell. This is known as piggybacking. It is the defendant's contention that piggybacking is not permitted by the applicable Directives and Regulations. The claimant, while recognising that there may be technical difficulties which make it impossible in some cases to avoid the risk of leaching, contends that piggybacking is lawful and that a permit can be granted if the technical problems can be overcome. I should note that the defendant says that it has dealt with a number of piggybacking applications and has refused each one because, independently of the legal objection, none has succeeded in overcoming all technical objections. Most or even, hitherto, all piggybacking applications may have been refused because of the factual circumstances applying to the landfill sites in respect of which they were made but that cannot assist in establishing whether on their true construction the relevant provisions of the Directives and Regulations prevent permits being granted even where the technical difficulties are overcome.” 5. Specific legislative control of landfilling arose under theControl of Pollution Act 1974 . Waste Disposal Licences needed to be obtained but, once the filling permitted by the licence was completed, the operator could relinquish the licence and would have no continuing obligation to manage the landfill.The Environmental Protection Act 1990 amended the regime by, among other matters, preventing the relinquishing of what were called Waste Management Licences (WML) without the regulator's permission. In 1990 the regulator was the Waste Regulation Authority but in 1996 it became and has since remained the [Agency]. WMLs could not be relinquished until the operator demonstrated that the landfill no longer posed any unacceptable threat to the environment or to human health. Thus there was a continuing obligation to manage a landfill even though waste was no longer being deposited in it.The Landfill (England and Wales) Regulations 2002 (“The Landfill Regulations”), made under thePollution Prevention and Control Act 1999 , which came into force on15 June 2002 , now require an operator to obtain a landfill permit. Regulation 15 provides that a permit must require the defendant to approve any closure and obliges the operator to remain responsible for the maintenance, monitoring and control of the landfill for as long as the defendant reasonably determines that the landfill is likely to cause a hazard to the environment. In particular, the operator must monitor and control any leachate so as to stop it harming the environment or humans”
“Landfills receiving more than ten tonnes per day or with a total capacity exceeding 25,000 tonnes, excluding landfills of inert waste". Article 4 requires Member States to take the necessary measures "to ensure that no new installation is operated without a permit issued in accordance with this Directive." Installation is defined in Article 2(3): “‘Installation' shall mean a stationary technical unit where one or more activities listed in Annex 1 are carried out, and any other directly associated activities which have a technical connection with the activities carried out on that site which could have an effect on emissions and pollution.”
“1. Can a landfill permit lawfully be granted for the separate operation of a landfill which partially overlies a closed cell containing previously deposited waste? 2. If a permit must relate to the whole site, namely the proposed landfill together with the closed cell, is the defendant required to refuse to grant a permit where the existing deposits (i.e. those in the closed cell) are responsible for harmful discharges to groundwater and where the landfills as a whole cannot be made to comply with the technical requirements of the Landfill Directives? These two issues have been called the installation issue and the groundwater issue respectively.”
“20. There is no definition of 'stationary technical unit' in the Directive or the Regulations. The meaning suggested in the Government Guidance seems to me to be appropriate. When applied to landfill, I see no reason why in principle a new deposit in a defined area which excludes an old cell should not qualify. I am not persuaded that it is necessary to apply a test of independence. If the unit risks serious pollution from the existing old cell, for example because it causes it by compression or because it prevents measures which would prevent such pollution occurring being applied, it may not receive a permit. This will not be because it does not qualify as a technical unit in its own right but because it cannot meet the requirements necessary to avoid any serious risk of pollution. It is the inability to meet the necessary requirements that has, according to the [Agency], led to refusals in these and in all other piggybacking applications that have been made. The Agency says it has been its practice to consider all such applications on their merits independently of the view that they cannot legally be granted. However, the claimant has complained that it has not been able because it has not been asked to deal with all technical matters which have raised concerns and may have resulted in bars to the grant of a permit.”
“If, but only if, it can demonstrate that there is no serious risk of pollution either currently or in the future for a period covered by any after care requirements, whether that pollution may arise directly from its activities or because those activities hinder or prevent proper measures to deal with the after care of the existing cell, may any permit be granted. Further, it is in my view legitimate for the [Agency] to take due account of potential difficulties in any given case of identifying who is to blame since those difficulties may mean that pollution cannot properly be controlled.”
“Whereas to ensure the effective protection of groundwater in the Community it is necessary to prevent the discharge of substances in List I and limit the discharge of substances in List II”
“The purpose of this Directive is to prevent the pollution of groundwater by substances belonging to the families and groups of substances in Lists I or II in the Annex, hereinafter referred to as ‘substances in lists I or II’, and as far as possible to check or eliminate the consequences of pollution which has already occurred”
“Member States shall take the necessary steps to: (a) Prevent the introduction into groundwater of substances in List I; and (b) Limit the introduction into groundwater of substances in List II so as to avoid pollution of this water by these substances”
“If the person requesting an authorisation as referred to in Articles 4 or 5 states that he is unable to comply with the conditions laid down, or if this situation is evident to the competent authority and the Member State concerned, authorisation shall be refused”
“As regards discharges of the substances in Lists I or II already occurring at the time of notification of this Directive, the Member States may stipulate a period not exceeding 4 years after entry into force of the provisions referred to in Article 21(1), on expiry of which the discharges in question must comply with this Directive”
“The application of the measures taken pursuant to these Regulations may on no account lead, either directly or indirectly, to pollution of groundwater”