The NIS retains two outfall options
Proposed options; selection not established · Proposed drainage for the259-dwelling Countess Road scheme
What the evidence says
Both options use the on-site SuDS treatment train and restrict runoff to28.5L/s. Preferred Option1 uses the Countess Road public network via Countess Grove; Option2 uses an existing600mm public pipe toward the River Flesk. The report explicitly leaves Option1’s downstream treatment pathway uncertain.
Proposed drainage for the259-dwelling Countess Road scheme Downstream route uncertainty expressly retained by the NIS
Why it may matter — interpretation
Interpretation for drainage engineers: the unresolved outfall pathway is a concrete approval/design question affecting connection works.
What is not established
No final outfall selection, accepted connection, installed system or available contract is proven. Obtain the final drainage agreement; do not present the preferred option as selected.
Inspect the evidence
Countess Road LRD Natura Impact Statement · p.32
Inspected PDF page 32 · Issued 2026-06-02 · WS0950_CountessRoad_NIS_FINAL_02; replaces revisions00/01; received11June2026 · Checked 2026-09-05
28.5 l/s