24/01033/NONMATPlanning Application 24/01033/NONMAT

Non-Material Amendment to planning permission 23/02187/FULMAJ: The proposed scheme will have a capacity of 3200m3 and will comprise the construction of a detention basin with an area of 0.78 hectares in the western field. A 3m wide swale is proposed in the eastern field and will be 120m in length and c. 0.5m deep. A bund 280m in length will run along the southern perimeter of the basin and swale and will vary in height from a maximum of 0.3m high to an average of 0.2m high along its length. The crest of the bund will be set at 79.20m AOD and will accommodate a 15m wide spillway at a level of 79.05m AOD. The detention basin will comprise two areas, a higher level set at 78.50m AOD and a lower area set at 78.30m AOD. The basin will also comprise a stilling basin set at a level of 78.10m AOD. A 450mm diameter pipe will convey flows from the basin to the existing Thames Water 750mm surface water sewer via a control structure to the east of the basin. A 3.0m wide access track is proposed around the northern boundary of the basin to facilitate access for maintenance and a 2m track along the bund at the southern edge of the basin. The bund to the south of the swale will comprise a 1.0m wide crest which will facilitate maintenance. The provision of a 2m wide foot bridge is also proposed over the swale to ensure access is maintained from the north to the south of the fields. To mitigate the loss of cricket facilities a new three lane non turf cricket practice net and new non turf pitch are to be installed within Brown's Sports Field. Amendment: Increase in excavations so as to install the impermeable liner at a depth that will prevent flotation of the liner. Reduction in amount of material to be transported. Final levels will remain unchanged.

24/01033/NONMAT