Sustainable Drainage Systems are a primary design principle for all new developments to manage the drainage of surface water at a site.
As of 6 April 2015, SuDS are required for all new developments in England within areas affected by flood and for all major developments outside those areas.
SuDSmart Reports support lawyers, developers and regulators during the early stages of planning, in creating and evaluating appropriate drainage options for a Site.
GeoSmart’s SuDS Infiltration Map focuses on a site’s infiltration suitability (low, moderate, high) on a 50m resolution grid. This forms the basis of our SuDSmart Report range, providing total confidence from the early conceptual design stage through to initial master planning and design.
Each report includes the relevant guidance and best practice required for planning applications in the UK.
We’ve made choosing the right report for you as simple as possible by offering a tiered report range.
If your site doesn’t fit these assumptions or you require more detailed assessment, we can still assist but please do get in touch as one of our other packages may suit you better.
Guidance has been released for lawyers on drainage requirements for new build developments. Download it now.
For initial screening at the conceptual design stage a SuDSmart or SuDSmart Plus Reports typically support 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 drainage systems are introduced in our SuDSmart Pro Report (Note: infiltration drainage techniques are also considered when possible).
SuDSmart 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 are assessed including discharge to the ground, surface water courses or sewerage. The report provides sizes and flow rates for a range of sustainable drainage options that may be considered.
You should note that our most detailed report, SuDSmart Pro 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 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 and engineers through our sister company ESI Ltd., who can provide a more detailed review of your site specifics and planning requirements. ESI also provide soakaway/infiltration testing services and interpretive data review. Please contact a member of the GeoSmart team to put you in touch with ESI when further detailed assessment is required.
To discuss the SD50 SuDS screening map and how it can improve your planning submission for your client, contact us today.