Regulatory Method (WAT-RM-08)
...A Simple Index Approach (SIA) Tool is available to help determine whether the proposed SUDS are in line with the Simple Index Approach and acceptable. Appendix C of the SUDS Manual also includes worked examples of applying the Simple Index Approach....
https://www.sepa.org.uk/media/219048/wat-rm-08-regulation-of-sustainable-urban-drainage-systems-suds.pdf
Update of the CIRIA SuDS Manual - Susdrain
...A SIA has been developed on behalf of SEPA to support the implementation of the water quality management design methods set out in the SuDS Manual, with appropriate cross referencing to the relevent 'Design Conditions' in the tool it can be used for all the UK....
https://www.susdrain.org/resources/SuDS_Manual.html
Water quality assessment for SuDS developments (SuDS manual)
...As a part of the rewriting of the SuDS Manual (2015), a simple risk assessment method (the Simple Index Assessment method) was developed to address some of the deficiencies of the original ?levels of treatment? approach specified by the previous version of the Manual....
https://www.uksuds.com/tools/water-quality-assessment-suds-developments-suds-manual
SIMPLE INDEX APPROACH: AN INTRODUCTION
...When the combined mitigation index exceeds the land use pollution hazard index, then the proposed components are considered sufficient in providing pollution risk mitigation....
https://planning.walsall.gov.uk/swift/apas/MediaTemp/69671-240300.pdf
SuDS Tools - Argyll and Bute
...SEPA Tool to assess adequate SuDS measures for water quality Basic scoring approach for hazard Countered by SuDS provisions Can be downloaded at;...
https://www.argyll-bute.gov.uk/sites/default/files/planning-and-environment/9_-_suds_tools.pdf
Diffuse pollution in the urban environment (SUDS)
...A tool to assist the Simple Index Approach in determining acceptable SUDS is available. We have a new BETA website....
https://www.sepa.org.uk/regulations/water/diffuse-pollution/diffuse-pollution-in-the-urban-environment/
SIMPLE INDEX APPROACH: TOOL - docs.planning.org.uk
...The supporting 'Design Conditions' stated by the tool must be fully considered and implemented in all cases. Relevant design examples are included in the SuDS Manual Appendix C. Each of the steps below are part of the process set out in the flowchart on Sheet 3....
https://docs.planning.org.uk/20240814/90/SGB8H8EXGMW00/m2d0orni1nu69uq1.pdf
Simple Index Approach (SIA) - Civilistix
...The Simple Index Approach (SIA) is a simple risk-based method for selecting the appropriate type and combination of sustainable drainage systems (SuDS) for the treatment of surface water runoff based off a variety of land uses and pollution risk hazards....
https://www.civilistix.com/news/simple-index-approach-sia/
Water Quality | Essex Design Guide
...At the full application stage and at discharge of conditions it is expected that the simple index approach is used to ensure that there is sufficient treatment for the site. This should be shown by the hazard pollution level indices and the mitigation indices that the features used provide....
https://www.essexdesignguide.co.uk/suds/water-quality/
The Simple Index Approach: A Practical Guide to Water Quality Risk ...
...The CIRIA SuDS Manual provides a systematic methodology known as the Simple Index Approach, which offers drainage designers and developers a practical framework for assessing and managing water quality risks. Understanding this approach is essential for achieving compliance with planning conditions and protecting our water environment....
https://www.thedrainagedesigners.co.uk/post/the-simple-index-approach-a-practical-guide-to-water-quality-risk-management-in-suds