HomeMy WebLinkAboutWATERGLEN PUD - FINAL - 71 93B - CORRESPONDENCE - STORMWATER-RELATED DOCUMENTS (5)The developer's engineer has proposed improvements to the Boxelder
Creek and Cooper Slough floodplains. They do take into account the
potential for Boxelder Creek to spill onto this site and has been
designed to meet the 100 year storm event. Flood flows will enter
this area when they leave the creek to the north and east of the
site. These same flows will inundate the interchange area of East
Mulberry and I-25. The utility plans and supporting calculations
are currently being reviewed by the Stormwater Department. At this
time, these plans are considered to be substantially complete with
minor issues yet to be resolved. Final approval by Stormwater will
ensure compliance with all Federal, State, and City regulations.
The only remaining question is in regards to the proposed day care
center and office/clubhouse uses in existing buildings. The
concern is about high velocities in the channelized area that may
require armoring to protect the existing buildings. An option is
to relocate the buildings outside of the channel area. If these
buildings are relocated the integrity of the Planning Board
approval is not compromised.
The Boxelder Creek overflow is currently not addressed in an
adopted Drainage Basin Master Plan. However, whenever the Master
Plan is updated, improvements are anticipated to be recommended to
redirect flood flows back into Boxelder Creek east of I-25; thereby
eliminating the flows in this development and at the interchange of
East Mulberry and I-25. At the time of Final Planning and Zoning
Board approval, the drainage and floodplain proposal was acceptable
to the Stormwater Department, realizing that complying with
existing criteria was still necessary to receive final utility
plan approval.
DATE JI '
FRDM'
Return
F°rWard
Discard
00MMEA f 1-L
T �Obgnrith
sus
e^Hate de
'evinMce e nus
Mueker
1 inK $Chiueter
Glen gibers
ROdney
Mike Grim ch
=JSehan^0 �a11e9°s -