WINEP × DWMP × the risk surface.
Reconcile regulator-led plans, statutory drainage plans and bottom-up operations scope against the new-evidence risk surface. The gap between them is where the £2 bn sits.
PR24 commitment rollup
Each performance commitment, the plan lines that contribute to it, and the weighted confidence that the funded scope delivers.
| Commitment | Target | Funded CAPEX | Unfunded | Risk addressed | Confidence |
|---|---|---|---|---|---|
Storm overflow spill reduction WINEP-YW-204 | −32% vs baseline | £0.6 M | £17.3 M | £1.5 M | 60% |
River nutrient reduction (N & P) WINEP-YW-128 · DWMP-MON-07 | −75% harmful nutrients | £32.5 M | £0.0 M | £18.5 M | 78% |
River water-quality monitor install WINEP-YW-204 · DWMP-MON-07 | 100% install of CIM monitors | £1.1 M | £2.1 M | £2.0 M | 74% |
Internal sewer flooding (ISF) No funded plan lines | −24% (sector −27%) | £0.0 M | £0.0 M | £0.0 M | No funded scope |
Sewer collapses No funded plan lines | −43% collapses | £0.0 M | £9.4 M | £0.0 M | No funded scope |
Water network leakage No funded plan lines | −14% leakage | £0.0 M | £0.0 M | £0.0 M | No funded scope |
Mains bursts & repairs PROAM-OPS-512 | −13% bursts | £0.8 M | £0.0 M | £1.5 M | 88% |
Customer consumption No funded plan lines | −2% (household & business) | £0.0 M | £0.0 M | £0.0 M | No funded scope |
Water quality customer contacts No funded plan lines | −26% contacts | £0.0 M | £0.0 M | £0.0 M | No funded scope |
Where high-risk assets fall through the plans
Assets ranked by new-evidence £-at-risk where the plan stack does not provide funded construction scope.
Scarborough WwTW
Funded plans cover ~£18.0 M of £28.0 M at risk.
North Bay CSO
Funded scope is investigation-only (WINEP-YW-204); no construction line in AMP8.
North interceptor trunk
Only scoped-unfunded scope: DWMP-COA-12.
Marine Drive PS
Only scoped-unfunded scope: PROAM-OPS-441.
South Bay CSO
Only scoped-unfunded scope: DWMP-COA-19.
Plan inventory
The WINEP, DWMP and PROAM lines that touch the Scarborough catchment.
Scarborough WwTW — tertiary nutrient removal
Phosphorus and ammonia tertiary stage at the Scarborough works. EA-led WINEP commitment with fixed delivery date.
North Bay bathing-water uplift — investigation only
Investigation programme to characterise CSO spill pattern at North Bay. Does not commit construction scope.
North interceptor — structural relining
DWMP-identified Victorian trunk sewer with elevated collapse probability. Scope built bottom-up from CCTV.
South Bay catchment storage assessment
Hydraulic modelling for South Bay storage. Deferred to back half of AMP8 pending bathing-water signal.
Marine Drive PS — duty pump refit
Bottom-up operations log: repeat duty pump trips. Scoped by Ops, awaiting capital sign-off.
Falsgrave PS — telemetry refresh
Telemetry refresh to remove a known blind spot upstream of the works.
CIM network expansion — Cornelian & Cayton
Add continuous in-river monitors to currently uncovered bays. Required to evidence consent compliance.