HomeMy WebLinkAbout2001-10-17 BRAA Email to OPHKris Danielson
From;
Postler, Dennis M [dpostler a@bonestroo.com
Sent:
Wednesday, October 17, 2001 2:03 PM
To:
Kris Danielson (E- mail); Scott Richards (E -mail)
Cc:
Jay Johnson (E-mail); Mark vierling (E- mail); Kimberly Kamper (E -mail)
Subject:
Oak Park Station
Kris:
I had a chance to review the Kern Center Pond storage and proposed expansion
with our drainage engineers, and have come to the conclusion that what METRO
Land Surveying and Engineering is proposing is acceptable for oak Park
Station. Their proposed pond expansion(s) to accommodate development within
Oak Park Station keep the existing 100 -year High Water Level_ at or below its
current levels (I left you a long - winded voice mail on this, but wanted to
e -mail you also to cc: others).
However, the existing HWL in the Kern center Pond is higher than desirable
due to allowing development to continue and decrease the freeboard (distance
between the HWL and building finished floor elevations). The existing
1 00 -year HWL is 935.9, the desirable HWL is 934.0. After oak Park Station
enlarges the pond and fully develops, the HWL will be 935.5 (slightly lower
than the existing HWL). As such, the City should take steps to bring this
HWL back as close to 934.0 as possible. Two factors need to be considered
with this recommendation, namely 1) the pond should be enlarged even without
additional development in the Kern Center and 2} the pond should probably be
enlarged enough to account for ultimate development in the Kern Center (to
avoid individual lots needing on -site ponding).
The pond can either be enlarged to the south (MnDOT property?) or farther to
the north into oak Park Station, with compensation to them, I would assume,
for utilizing more of their developable acreage. Additionally, the water
shed district(s) are requiring /requesting we deepen the existing pond for
water quality purposes.
Since oak Park Station's latest grading plan (proposed pond enlarging) does
accommodate their proposed development, we contacted METRO to inform them a
meeting is not necessary.
Dennis M. Postler
Bonestroo, Rosene, Anderlik &Associates
2335 West Highway 36, St. Paul, MN 55113
Direct: (651) 604 -4815
Office: (651) 636 -4600, x4815
Fax: (651) 636 -1311
Cellular: (612) 865 -9187
E -mail: dpostler @bonestroo.com