"Drwy gyflwyno'r Bil hwn, ein huchelgais yw gwella ansawdd aer a seinweddau ymhellach drwy gyflwyno mesurau newydd i leihau effeithiau llygredd aer a sŵn ar iechyd pobl, bioamrywiaeth a'r amgylchedd naturiol."
“By introducing this Bill, our ambition is to further improve air quality and soundscapes by bringing forward new measures to reduce the impacts of air and noise pollution on human health, biodiversity and the natural environment.”