Page 43 - Oxfordshire SuDS DESIGN & EVALUATION
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Additional considerations for infiltrating soils
■ Discharge to protected waters or protected groundwater (e.g. SSSI or SPZ’s) may require
additional treatment stages and liaison with the environmental regulator.
■ More general discharge to groundwater (usually infiltrating soils) can be referenced in table
26.4 of the SuDS Manual. Concept Design
■ Medium pollution hazard level developments will require risk screening to determine
appropriate mitigation measures. Refer to table 26.5 and 26.6 of the SuDS Manual
■ For developments of a high pollution hazard level a detailed risk assessment will be required.
Typical diffuse urban pollution concentrated at
a conventional gully.
38
Linear swales alongside an entrance path at this
infiltration SuDS project,
Burlish Primary School.
Oxfordshire County Council SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates
