All roadside properties along Cardiff Street, and any associated roads, from the junction of Cardiff Street with Vitoria Square to the junction of Cardiff Street with Cross Street and Station Street.

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

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

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

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

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.

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

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

An area surrounding Lakeside Court, Penstowe.

All roadside properties along Pontshonnorton Road from ‘Norton Bridge Methodist Church’ to No. 51 Pontshonnorton Road