​​​​​​​​​As part of Cardiff’s Clean Air Project a proposed package of mitigation measures has been designated to address air quality concerns highlighted for Castle Street, Cardiff.
​​​​​​​Fel rhan o Brosiect Aer Glân Caerdydd rydym wedi cyflwyno rhai mesurau lliniaru i fynd i'r afael â phryderon ansawdd aer a amlygwyd ar gyfer Stryd y Castell, Caerdydd.