Can you run the stormwater numbers for Kestrel Flats Phase 2? I need the detention pond sized for flow control per the Eastern Washington manual (SBUH, Type IA, existing conditions) using the preliminary plat and the 30% storm drainage sheets, and a check of whether the pond on the plat is big enough. Also look at how much the wet pool will drop over a dry summer from evaporation and seepage, and whether the culvert under SR 291 works against the WSDOT comment letter.
Thinking…
The 2-year release limit, not the 25-year storm, sizes the pond. Evaporation alone dries the shallow bench by day 48, even with a liner.
Stormwater Detention, Kestrel Flats Phase 2