a description of any likely significant effects, to the extent of the information available on those effects, of the proposed development on the environment resulting from—
disgrifiad o unrhyw effeithiau arwyddocaol tebygol, i raddau’r wybodaeth sydd ar gael am yr effeithiau hynny, y datblygiad arfaethedig ar yr amgylchedd sy’n deillio o—