But it only relates to routine works and not to, for example, the removal of trees to enable major new works (although they may be subject to the exception under Class E, below).
Ond dim ond gwaith arferol y mae'n ymwneud ag ef, ac nid, er enghraifft, symud coed ymaith i alluogi gwaith mawr newydd (er y gallent fod yn ddarostyngedig i'r eithriad o dan Ddosbarth E, isod).