It would typically cover such issues as flora, fauna, noise levels, traffic, land use, archaeology, recreation, landscape, and air and water quality.
Fel rheol bydd y ddogfen yn ymdrin â materion megis blodau, anifeiliaid, lefelau sŵn, traffig, defnydd tir, archaeoleg, hamdden, tirwedd, ac ansawdd yr aer a’r dŵr.