Drainage Asset Mapping

A Drainage Asset Survey is required to improve knowledge of the location and condition of highway drainage in Wigan Borough. This will specifically require locating and mapping gully connections and any other pipes in order to show how the gullies in the survey area connect to known drainage infrastructure; the provision of CCTV survey reports and footage of these gully connection pipes according to the WRc Manual of Sewer Classification; hydraulically cleaning all pipework and gullies prior to the survey; and unde...