Get Full Government Meeting Transcripts, Videos, & Alerts Forever!
Get email alerts on the Stormwater topic
No spam. Unsubscribe anytime.
City engineer: updated memo shows detention pond can handle runoff for initial Panda Express build
Summary
An engineering memo provided the day of the meeting led staff to change recommendation from postponement to approval, with the city engineer saying the detention pond will not worsen existing drainage at nearby Highland/Neil; pond expansion plans are proposed for future build-out.
City engineering staff told the Planning Commission that an updated memo provided the day of the hearing resolves prior concerns that new impervious surfaces from SDP-26-002 would exceed the regional pond's capacity at full subdivision build-out.
Rex Ritter, deputy public works director and city engineer, said detention ponds in the 9 South addition are sized to hold a 24-hour, 25-year storm and release at a controlled rate. "So, no, it would not be worsened, than the existing drainage condition," Ritter said when asked whether the Panda Express site would increase ponding at the Highland and Neil intersection. He noted the drainage area feeding that location is roughly 22 acres and primarily street drainage.
Staff explained Kaw Valley Engineering submitted preliminary plans showing intent to expand the regional detention pond as more lots develop; the engineering division's same‑day memo concluded the existing pond is adequately sized to support runoff from this first lot but that future expansion plans would be needed if subsequent lots use higher runoff coefficients. The commission retained a condition requiring the city engineer to review runoff calculations prior to building permit issuance where necessary.
