The Spinney, Kingston Bagpuize

Paul Basham Associates provided both Transport Planning and Civil Engineering works to support a residential development comprising 5 residential dwellings in Kingston Bagpuize, Oxfordshire.

The Brief

Having received pre-application advice that the highway authority considered the site to be in an unsustainable location, Paul Basham Associates were instructed by Kingerlee to provide the necessary highways and civil engineering input into the scheme before submitting a full planning application. 

At the time of the pre-application submission, construction was underway on a housing allocation comprising of circa. 280 dwellings on land to the immediate north of the site, the southern part of which would also be accessed via Oxford Road. Land to the east of the site had also been allocated for a large-scale residential development in Vale of White Horse Local Plan 2031 Part 2. 

Our Approach

Transport Planning

Confident that the issues raised during the pre-application could be overcome, we assessed the indicative proposal, providing early feedback on parking provision, the internal layout and geometries, and the proposed refuse and emergency access strategy for the site. We reviewed several layout options providing vital input into the overall design of the scheme and liaised with Oxfordshire County Council during the design process to bottom out any potential issues and gauge the extent of any offsite highway improvements that may be required as part of the proposed development. We subsequently prepared an indicative footway design along the Oxford Road and prepared a Transport Statement in support of the scheme. Following comments from the Parish Council during the application stage, we prepared a rebuttal regarding concerns about the impact of the site on the operation of the local road network and successfully demonstrated that the impact of the proposed scheme would be negligible. 

Civil Engineering

Initially we commissioned soakage tests for the site to determine the permeability of the underlying chalk. As expected, good soakage rates were found, and we therefore determined that SuDS infiltration components were suitable for the site. Our final developed strategy involved using permeable paving across the site and individual plot soakaways allowing the surface water runoff to attenuate for the appropriate storm event and infiltrate into the ground.

The foul drainage strategy was a little trickier to determine. The nearest available potential foul sewer connection point was some 350m to the west and uphill which would have required an adoptable rising main with a telemetric link to the opposite development’s rising main (implemented to serve their 280-unit site): this made the option economically unviable. We therefore closely communicated with the client and after in-depth discussions, we agreed on a suitable solution to treat the foul sewerage on-site and discharge into the ground (as no live watercourse was available). Our developed strategy involved individual waste-water treatment plants for each plot, with the treated effluent discharging into small drainage fields in back gardens to infiltrate into the ground; the design was undertaken fully in accordance with BS6297 and Approved Doc H. 

The Result

Despite concerns raised by the local authorities at both the pre-application stage and during the application process, Paul Basham Associates are delighted to see that the scheme received planning permission in January 2020. We look forward to popping by and seeing these impressive family homes upon their completion in the near future.