Agenda item

The Committee considered the report of the Business Manager – Planning Development, which sought planning permission for the residential development of 10 dwellings, following removal of Grove Bungalow and existing outbuildings.

The application was considered by the 2 March 2021 Planning Committee where it was resolved to approve the scheme in line with the officer recommendation. This resolution was subject to the completion of a section 106 legal agreement within 4 months of the date of the Planning Committee (by 2^nd July) and that failure to do so would result in a refusal on the grounds that the scheme failed to secure an appropriate drainage scheme and developer contributions.

Since the committee, the applicant’s agent had approached officers to advise that it had now become apparent that the proposed means of site drainage was not feasible. A revised drainage strategy had been put forward as detailed on drawing no. 100334_01_0500_01 (Proposed Drainage Strategy Sheet 1 of 1) and the indicative layout plan amended to reflect this strategy as shown on drawing no. 1506G/001 (Site Block Plan) contained within the report.  This showed that surface water would now also need to be pumped off site in addition to foul sewage. An indicative area for the proposed pumping stations had been identified to the south-western corner of the site resulting in plot 5 indicatively moved east towards plot 6, bearing in mind that layout was not being fully considered at this stage.

Members considered the presentation from the Business Manager - Planning Development, which included photographs and plans of the proposed development.

Members considered the application acceptable.

AGREED      (unanimously) that planning permission is approved subject to:

a)    the conditions shown on the original report (with plan references              updated where appropriate, condition 8 to have the words ‘Unless    the bungalow is demolished before 18 May 2021’ removed and          condition 16 amended to:

Revised Condition 16:

No part of the development hereby approved shall commence until a detailed surface water drainage scheme based on the principles put forward by the approved Dice Flood Risk Assessment (FRA) dated July 2021 ref 100334/LD/November-19/01 Rev B has been submitted to and approved in writing by the Local Planning Authority.  The scheme shall be implemented and retained in accordance with the approved details prior to first occupation of the development.

Due to the inherent complexities of the surface water proposals it is crucial that all elements of any surface water condition are discharged prior to commencement on site. The final surface water scheme to be submitted shall:

?      Demonstrate that the development will use SuDS throughout the site           as a primary means of surface water management and that design is in            accordance with CIRIA C753.

?      Limit the discharge rate generated by all rainfall events up to the 100               year plus 40% (for climate change) critical rain storm 5 l/s rates for the         developable area.

?      Provide detailed design (plans, network details and calculations) in      support of any surface water drainage scheme, including details on any               attenuation system, and the outfall arrangements. Calculations should       demonstrate the performance of the designed system for a range of               return periods and storm durations inclusive of the 1 in 1 year, 1 in 2              year, 1 in 30 year, 1 in 100 year and 1 in 100 year plus climate change       return periods.

?      For all exceedance to be contained within the site boundary without              flooding new properties in a 100year+40% storm.

?      Evidence STW approval for connections to existing network and          adoption agreement of site drainage infrastructure including pumping              stations and associated rising mains.

?      Evidence of how the on-site surface water drainage systems shall be   maintained and managed after completion and for the lifetime of the             development to ensure long term

Reason: A detailed surface water management plan is required to ensure that the development is in accordance with NPPF and local planning policies. It should be ensured that all major developments have sufficient surface water management, are not at increased risk of flooding and do not increase flood risk off-site.

and

b)    the completion of the section 106 agreement to secure the developer               contributions set out in the original report (except the community    facility contribution which is no longer sought) and the maintenance of the on-site pumping stations/drainage infrastructure where necessary       within 3 months of the date of Planning Committee; and

c)     failure to do so would result in a refusal on the grounds that the scheme   fails to secure sustainable development by failing to provide for the necessary infrastructure by way of developer contributions.