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Please note that the date you requested in the address for this web page is not an actual date upon which a change occurred to this item of legislation. You are being shown the legislation from , which is the first date before then upon which a change was made.
5. Rhaid i bob awdurdod bwyd fonitro ar gyfer tritiwm os oes ffynhonnell anthropogenig o dritiwm neu radioniwclid artiffisial arall yn bresennol o fewn y dalgylch ac ni ellir ei ddangos ar sail rhaglenni gwyliadwriaeth nac ymchwiliadau eraill bod lefel y tritiwm yn is na’r gwerth paramedrig a bennir yn Rhan 4 o Atodlen 7.
Gwybodaeth Cychwyn
I1Atod. 9 para. 5 mewn grym ar 28.11.2015, gweler rhl. 1(2)