- Y Diweddaraf sydd Ar Gael (Diwygiedig)
- Gwreiddiol (a wnaed Fel)
Dyma’r fersiwn wreiddiol (fel y’i gwnaed yn wreiddiol). This item of legislation is currently only available in its original format.
5. In the Schedule (Groundwater Threshold Values) for Table 1 substitute—
Parameter | Unit | To examine if groundwater abstraction is causing saline or other intrusions | >To examine if groundwater is providing a significant contribution to the failure of the environmental objectives of associated surface water bodies | To examine if the quality of groundwater that is abstracted for potable use is deteriorating, possibly resulting in a need for increased purification | To examine the spatial extent of a groundwater body or group of bodies that are exceeding an EU Standard or threshold value |
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(1) The surface water environmental standards are set out in Schedule 1 to The Water Framework Directive (Classification, Priority Substances and Shellfish Waters) Regulations (Northern Ireland) 2015(S.R. 2015 No. 351). | |||||
(2) The “dilution factor” is taken to be the fraction of the average annual river flow derived from groundwater inflows. It can be estimated from established hydrological indices such as the baseflow index, or from the ratio of catchment groundwater recharge to effective precipitation.” | |||||
Ammonium | mg/l | 0.29 | |||
Arsenic | μg/l | 7.5 | |||
Atrazine | μg/l | 0.075 | |||
Cadmium | μg/l | 3.75 | |||
Chloride | mg/l | 25 | |||
Electrical Conductivity | μS/cm | 800 | 1875 | ||
Lead | μg/l | 7.5 | |||
MCPA | μg/l | 0.075 | |||
Mecoprop | μg/l | 0.075 | |||
Mercury | μg/l | 0.75 | |||
Nitrate (as NO3) | mg/l | 37.5 | 37.5 | ||
Nitrite | μg/l | 375 | 375 | ||
Simazine | μg/l | 0.075 | |||
Sulphate | mg/l | 187.5 | |||
Tetrachloroethylene | μg/l | 7.5 | 7.5 | ||
Trichloroethylene | μg/l | 7.5 | 7.5 | ||
Any pollutant in relation to which a surface water environmental standard has been set(1) | 0.5 x (surface water standard divided by dilution factor)(2) |
Y Diweddaraf sydd Ar Gael (diwygiedig):Y fersiwn ddiweddaraf sydd ar gael o’r ddeddfwriaeth yn cynnwys newidiadau a wnaed gan ddeddfwriaeth ddilynol ac wedi eu gweithredu gan ein tîm golygyddol. Gellir gweld y newidiadau nad ydym wedi eu gweithredu i’r testun eto yn yr ardal ‘Newidiadau i Ddeddfwriaeth’.
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Explanatory Memorandum sets out a brief statement of the purpose of a Statutory Rule and provides information about its policy objective and policy implications. They aim to make the Statutory Rule accessible to readers who are not legally qualified and accompany any Northern Ireland Statutory Rule or Draft Northern Ireland Statutory Rule laid before the UK Parliament during the suspension of the Northern Ireland Assembly.
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