Preserve the differences that can change an intervention
Operations and finance are readily available. Residents, emergency responders, maintenance contractors, downstream ecology staff and mobility-constrained people may experience different consequences. PSD.2 distinguishes supported consequence paths from possible ones and from unknowns. One residents’ association is not presumed to speak for every resident. An evening meeting that some people cannot attend is a participation limit, not evidence that they have no concern.
The resulting concerns support four different formulations through PSD.3:
| Formulation | What changes in the inquiry |
|---|---|
| Capacity shortage | Examine inflow, available pumping capacity and reliability; added capacity becomes a serious direction. |
| Unequal protection | Examine where exposure and access burdens fall, including reachable assistance; an aggregate hydraulic result is insufficient. |
| Maintenance fragility | Examine spares, staffing, contracting and coordination; a maintenance or staged direction may address a different cause from pump count. |
| Unsafe deployment | Examine placement, traffic, worker and downstream conditions; a restraint or differently bounded direction may be necessary. |
The team does not vote for the one “real problem.” PSD.4 keeps the next flood season, material downstream paths and deployment conditions inside the present inquiry. Long-term redesign and permanent relocation remain outside its present investment return, with their decision-bearing consequences visible. Evidence that no feasible pumping branch serves mobility-constrained residents, or that flood burden transfers beyond the assumed area, would reopen the boundary.