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9. Mae Rheoliadau Diogelu'r Amgylchedd (Prosesau a Sylweddau Rhagnodedig) 1991(1) yn cael eu diwygio fel a ganlyn.LL+C
Gwybodaeth Cychwyn
I1Atod. 11 para. 9 mewn grym ar 16.7.2005, gweler rhl. 1(2)(b)