Daeth sylwadau i law am amrywiaeth eang o bynciau gan gynnwys coedwigaeth, llygredd dŵr, gwrychoedd, gwarchod bywyd gwyllt, safleoedd gwarchodedig, y rhyngweithio rhwng cynllunio a chyfraith amgylcheddol a halogiad biffenyl polyclorinedig (PCB). Gall Asesydd Interim Diogelu'r Amgylchedd Cymru wedyn wneud argymhellion ar gyfer unrhyw gamau y mae’n ystyried y gallai fod angen eu cymryd gan Weinidogion Cymru.
Submissions have been received about a wide variety of topics including forestry, water pollution, hedgerows, wildlife protection, protected sites, the interaction between planning and environmental law and polychlorinated biphenyl (PCB) contamination. The IEPAW can then make recommendations for any action they consider may need to be taken by Welsh Ministers.