Preliminary Recommendation

The staff and design team are preliminarily recommending creating infrastructure consistent with the “Bigger” option, with the following features to include in design (see Table 1 and Figure 2 of the Tech Memo);

1. An expanded and lowered Weber Pond, (Tech Memo Feature 1) including:

• Expansion into Weber Woods and the removal of approximately 6 acres of trees
• Natural resource restoration and improvement of the entire Weber Woods land area
• Creation of nature trails and a bridge or floating boardwalk connecting east to west across the pond

2. An expanded and lower Lynn/Kipling inundation area (Tech Memo Feature 4) including:

• Tree removal along most of the basin, with several tree stands saved
• A mixed wetland and pond, with aquatic and upland natural resource restoration

3. An expanded pipe and swale to provide overflow from the Lynn/Kipling inundation area (Tech Memo Features 2 and 3) including:

• A box culvert along the 41st right-of-way and easement corridor between homes
• A landscaped swale along the north side of the active play spaces in Weber Park to provide high flow and clean water benefits, including an east to west park trail

4. An expanded and reconfigured pipe network extending west on 42nd, south on Crocker, east on Morningside Road, south on Grimes, and west on Branson (Technical Memo Features 9, 9a, and 10) including:

• Expanded surface inlets to fully utilize pipe capacity in extreme events
• Minor changes to grades in streets and curb lines to reduce potential surface flows or flood backflow into low or landlocked areas