# The Landfill (England and Wales) Regulations 2002, Paragraph 4: Notes to Table 1


(1) The monitoring of groundwater shall be carried out in accordance with Table 2.
(2) The parameters to be analysed in the samples taken must be derived from the expected composition of the leachate and the groundwater quality in the area.
(3) In selecting the parameters for analysis, the mobility in the groundwater zone must be taken into account.
(4) Parameters may include indicator parameters in order to ensure an early recognition of change in water quality (the recommended parameters are pH, TOC, phenols, heavy metals, fluoride, As, oil/hydrocarbons).
TABLE 2
Operational phase
After-care phase
Level of groundwater
Every six months1
Every six months1
Groundwater composition
Site-specific frequency2, 3
Site-specific frequency2, 3

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Source: https://www.legislation.gov.uk/ukdsi/2002/0110395905/schedule/3/paragraph/4 (the official version)
Page: https://openlegislation.uk/draft-landfill-england-and-wales-regulations-2002/schedule-3/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.