Work No. 1 — Construction of new tracks and remodelling of existing tracks (2354 metres in length) to form part of the proposed track for the Barking Riverside Extension, located wholly at-grade within the existing railway corridor, commencing at a junction with Network Rail’s Essex Thameside (Tilbury Loop) Line 375 metres south-east of Barking Station Parade bridge, passing south-eastwards along the existing railway corridor below Ripple Road bridge, below the footbridge linking Harrow Road with Kennedy Road, over the Mayes Brook culvert, and below Alfred’s Way bridge, then turning east to pass along the north side of Network Rail’s Ripple Lane Marshalling Yard, and terminating at a point coinciding with the commencement of Work No. 2, 14 metres west of the bridge at Renwick Road.