Work No. 23D—U.K.A cut, forming a diversion of the Aveley Sewer, commencing in that watercourse at a point 25 metres south-west of the southern end of its existing culvert under the Tilbury Loop Railway, passing in a north-easterly direction under the railways (Works Nos. 23 and 23A) and the new road (Work No. 23B(1)), then passing northwards and terminating at a point in a new balancing pond 95 metres north-west of the junction of Tank Hill Road with Arterial Road, Purfleet;