# The Landfill Regulations (Northern Ireland) 2003, Paragraph 5

Extent: N.I.
Status: prospective

(1) Significant adverse environmental effects, as referred to in regulations 14(3) and 15(5)(b), should be considered to have occurred in the case of groundwater when an analysis of a groundwater sample shows a significant change in water quality.
(2) The level at which the effects referred to in sub-paragraph (1) are considered to have occurred (“the trigger level”) must be determined taking account of the specific hydrogeological formations in the location of the landfill and groundwater quality.
(3) The trigger level must be set out in the conditions of the landfill permit whenever possible.
(4) The observations must be evaluated by means of control charts with established control rules and levels for each downgradient well.
(5) The control levels must be determined from local variations in groundwater quality.
(6) The topography of the site and settling behaviour of the landfill body shall be monitored in accordance with Table 3.
Table 3
Operational phase
After-care phase
Note to Table 3
Data for the status plan of the relevant landfill: surface occupied by waste, volume and composition of waste, methods of depositing, time and duration of depositing, calculation of the remaining capacity still available at the landfill.
Structure and composition of landfill body
Yearly
Settling behaviour of the level of the landfill body
Yearly
Yearly reading

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Source: https://www.legislation.gov.uk/nisr/2003/496/schedule/3/paragraph/5 (the official version)
Page: https://openlegislation.uk/landfill-regulations-northern-ireland-2003/schedule-3/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.