Ac yntau’n rheoleiddiwr ym maes yr amgylchedd, mae gan Cyfoeth Naturiol Cymru (CNC) y pŵer i ymateb i droseddau amgylcheddol, ac mae’r pŵer hwnnw’n cynnwys defnyddio sancsiynau sifil. Er mwyn rhoi’r sicrwydd priodol i Weinidogion Cymru o ran caniatáu i CNC barhau i arfer sancsiynau o’r fath, gofynnodd Llywodraeth Cymru i’r Swyddfa Cyflawni Rheoleiddio Gwell (BRDO) gynnal adolygiad o CNC yn unol ag egwyddorion rheoleiddio da.
As an environmental regulator Natural Resources Wales (NRW) has the power to respond to environmental offences, including through use of civil sanctions.  To provide Welsh Ministers with the necessary assurance on NRW’s continued use of civil sanctions, the Better Regulation Delivery Office (BRDO) were asked by the  Welsh Government to undertake a review of NRW, against the principles of better regulation.