Site planning risk brief

A single storey dwelling, effluent treatment system and associated site works. Significant further information/revised plans submitted on this application

Construction of a single storey dwelling, effluent treatment system and associated site works

The construction of a new detached residential dwelling with domestic garage, roof mounted solar heating panels, proprietary wastewater treatment system and percolation area, new site entrance from road to enter the site including any necessary pruning of existing hedgerows, landscaping and all ancillary site works

The development will consist of the construction of a ‘sensory room’, and a one and a half-storey extension that will be used as a ‘granny flat’, to the rear of the existing dwelling; the retention of a domestic shed, and the installation of a proprietary wastewater treatment system in lieu of the existing septic tank, including all site works associated with the proposed development

The development will consist of (1) the extension and renovation of existing single storey dwelling to become a dormer dwelling, incl. dormer windows to front and rear elevations and new living areas to the East of the dwelling, (2) the construction of a new single storey detached garage to the rear to replace the existing poorly constructed shed, new Garage to be ancillary to the use of the dwelling, (3) replacement of the existing poor performing septic tank with a new foul waste water treatment plant and percolation area, (4) reconfiguration of the front boundary to improve the safety sightline upon entry and exit to the dwelling incl. the construction of a new entrance and boundary wall, together with all associated landscaping, site works and services. Significant Further information/Revised plans submitted on this application

The development will consist of construction of 11 No. Reed Beds measuring 20m (long) by 15m (wide) by 2.0m (high), 2 No. 18.3m (approximate)diameter reinforced concrete Final Settlement Tanks (1,300 m3) with associated access/viewing platform, 1 No. WAS Holding Tank (90m3), 2 No. 60m long Transfer pipelines beneath the bed of the River Blackwater between the new and existing treatment infrastructure, 1 No. Sludge Import facilities, construction of various pump sumps and the installation of duty/standby pumps, 1 No. 2m by 1.5m Box Culvert, new site surface water drainage pipework, sustainable drainage attenuation and manholes, new internal roads, installation of a new 2.4 m high wire mesh boundary fence with lockable access gates, new outfall to the River Blackwater for treated effluent and attenuated surface water runoff, landscaping and reinstatement including tree and hedge planting, localised scour protection and bank repair works to a part of the riverbank, new kerbs and flood defence measures on the existing WwTP site, decommissioning of existing clarifiers and belt press and removal of the Picket Fence Thickener and all ancillary works. Access is via an existing access off the R402. The development is an extension to Enfield WwTP to increase the treatment capacity and has an overall site area of 2.7ha. A Natura Impact Statement accompanies this planning application