Surface Water Drainage Reports (SuDS) for planning applications and property transactions
*1 Pricing based on site size & complexity.
|Features||EnviroSmart||EnviroSmart Plus||EnviroSmart Pro|
|Drainage Consultants’ professional opinion|
|£5 million PI|
|Fast delivery time (working days)**||10||15||20|
|Data pack, including: infiltration potential, flood risks, topography, surface water features and sewers|
|SuDS suitability evaluation|
|Supports Architects, Developers, Planning Consultant and the Legal Market|
|Expert drainage consultant support|
|Run off volumes and storage requirements|
|Expert help to discharge planning conditions|
|Professional opinion backed by £5 million PI|
|Review of planning conditions|
|SuDS strategy and schematic drainage layout|
|Management and maintenance recommendations|
**2 Expedited turnarounds are available on request
Features of our surface water drainage reports are as follows:
Why you should choose our reports
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GeoSmart was asked to produce a SuDSmart Plus Report to assess how the development of greenfield land into residential properties may impact the flood risk to off-site receptors as a result of the increase in surface water runoff generated. The planned area of impermeable ground cover was also used to estimate runoff volume and calculate the required volume of water to be discharged on-site. Since the site was underlain by permeable limestone, a soakaway was proposed as a feasible option for the attenuation and discharge of the excess runoff directly into the ground. We were instructed by a commercial home-builder to produce a SuDS Assessment Report to calculate an estimate of the increase…
Save when purchasing two or more reports at the same time with our report bundles!
For the initial screening at the conceptual surface water drainage design stage, a SuDSmart Report typically supports developers and regulators with infiltration drainage advice. This is the preferred method for managing surface water without increasing flood risk downstream.
When infiltration drainage cannot be undertaken at a site due to the underlying ground conditions, other more conventional surface water drainage systems are introduced in our SuDSmart Plus and Pro Reports (Note: infiltration drainage techniques are also considered when possible).
SuDSmart Plus/Pro Reports analyse the potential run-off from a site so that it can be managed effectively to ensure there is no increase in flood risk on or off the site. Post-development run-off rates are assessed for a range of storm events including an allowance for future climate change.
A drainage strategy is developed to offset the increase in surface water run-off from the new development using the principles of SuDS and the code for sustainable homes. The hydrological context of the site is assessed, along with any potential issues that may affect the SuDS system.
A range of potential options is assessed including discharge to the ground, surface water courses or sewerage. The report provides sizes and flow rates for a range of sustainable surface water drainage options that may be considered.
SuDSmart Reports can be used to support a planning application at Pre-Planning Stage, or alternatively address a Planning Condition prior to planning being granted.
SuDSmart Reports provide a cursory look at infiltration SuDS which is the preferred method for managing surface water flooding. Whether infiltration techniques are feasible or not will determine the suitability of other SuDS schemes going forward. The level of detail required depends on the specific requirements of your local authority.
You should note that our more detailed report, SuDSmart Plus, provides alternative options and preliminary scheme layouts that should be subject to more detailed review at the master planning stage.
In our experience, this level of detail is required for more stringent planning authorities or for more complex sites that warrant a more detailed assessment.
All SuDSmart reports include recommendations for next steps. We will always advise on the most cost effective way to move forward and provide details of how to do this whilst meeting in the needs of the planning department.
GeoSmart are able to provide access to a range of highly experienced senior consultants, suppliers and engineers, who can provide a more detailed review of your site specifics and planning requirements.
Please contact a member of the GeoSmart team to put you in touch when further detailed assessment is required.
The GeoSmart SD50 map provides an assessment of the capacity of the ground to receive infiltration depending on the nature, thickness and permeability of the underlying material and the depth to the high groundwater table.
To discuss the SD50 SuDS screening map and how it can improve your planning submission for your client, contact us today.