A topographical survey of the site, including cross-sections of any adjacent water courses for appropriate distance upstream and downstream of discharge point if appropriate (as agreed with the SAB)
Arolwg topograffig o'r safle, gan gynnwys trawstoriadau o unrhyw gyrsiau dŵr am bellter priodol i fyny'r afon ac i lawr yr afon o’r pwynt rhyddhau os yw'n briodol (fel y cytunwyd gyda'r CCDC)