Area incorporating sections of these roads Caerleon Rd, Chepstow Rd, Clarence Place,.

An area encompassing the New Road/Ffrwd Crescent gyratory, the bridge, and properties along Oxford Street between Pryce Street and Henry Street.

Elevated annual mean NO2 concentrations at residential properties alongside main arterial routes, which located within Hafod, Sketty and Fforestfach area.

An area encompassing properties along both sides of East Road, Tylorstown, between numbers 7 and 254 to the north and number 31 to the south.

All roadside properties along Gelliwastad Road and Morgan Street west to the junction of Gelliwastad Road and Gelliwastad Grove.

An area in Nantgarw encompassing the properties at Graig View along the western edge of the A468.

An area surrounding Lakeside Court, Penstowe.

An area encompassing all the properties on the west side of Partidge Road, Llwynypia from 103C to 128, including the Post Office.

An area encompassing properties along High Street and Duffryn Street to the junction with with Brook Street in Ferndale.

An area encompassing all roadside properties from 5 Nightingales Bush to 46 Pentrebach Road alongside the A470.