HomeMy WebLinkAbout1999-06-21 BRAA Ltr to OPH Bonestroo, Rosene, Anderlik and Associates, Inc. I ffirmative Action / E q ual Opportunit Emplo
Bonestroo Principals: Otto G. Bonestroo, RE. ■ Joseph C. Andenik, RE. ■ Marvin L. Sorvala, RE. ■
Glenn R. Cook, RE. ■ Robert G. Schunicht, RE. ■ Jerr A. Bourdon, RE. ■
Robert W. Rosene, RE., Richard E. Turner, RE. and Susan M. Eberlin, C.P.A., Senior Consultants
Rosene
nderlik Associate Principals.- Howard A. Sanford, RE. - Keith A. Go Robert R. Pfefferle, PE. •
Richard W. Foster, P.E. ■ David 0. Loskota, RE. ■ Robert C. I A. Pt r,
A &
A Michael I Rautmann, RE, ■ Ted K.Field, RE. ■ Kenneth P And s
ssociates
Sidne P Williamson, RE., L.S. ■ Robert F. Kotsmith ■ A M. i
P.
Offices.- St. Paul, Rochester, Willmar and St. Cloud, MN ■ Mil a €' Wl
En & Architects Website: www.bonestroo.com � � � -� k -i
June 21, 1999
Mr. Thomas Melena.
Cit of0ak I-lark Hei ht- s
14168 - 57th Street N.
P.O. Box 2007
Oak Park Hei MN 55082-2007
Re: R Transportation Site
Our File No. 55-99-000
Dear Mr. Melena:
We have completed a ver brief anal of the storm water runoff and treatment for the R
Transportation site as well as the EDA Bell site. Topo information obtained in the field
shows the northerl two-thirds of the Bell site slopes severel to the northwest with slopes of 10
to 12 percent which would prevent construction of storm water pondin at that location. Onl
the south 0.5 acres of the Bell site would drain into a common pond and represents
approximatel 10 percent of the overall draina area. A common pond could be constructed in
the northerl relativel flat open area of the unimproved R site with a 10 percent pond
encroachment on the Bell site. This will re removal of a wooded area of approximatel
0. 12 acres which contains mostl cottonwood trees.
The storm water pond would be g raded to contain at least 0.95 acre feet of wet stora which is
re to meet the National Urban Runoff criteria. This pond would also allow for 1.22 acre
feet of stora so that the dischar rate could be reduced to less than 2 cubic feet per second.
Other pondin sites could be made available on the upland portions of the R site but the
owner has not shown an interest in this alternative. There is a flat, open area adjacent to the
wetland recentl created b Northern States Power Compan but the initial expenditure would
be g reater than the current j oint site bein considered.
In accordance with y our re we have also prepared some ver approximate cost estimates
for the construction of the pond, the possible storm sewer s re for the R site as
well as the cost for g radin g , g ravel base, bituminous surfacin and curb and g utter surroundin
the R parkin lot. A summar of these costs is shown in the followin tabulation.
2335 West Hi 36 v St. Foul, MN 55113 ■ 651-636-4600 ■ Fax: 651-636-1311
Mr. Thomas Melena
City of Oak Park Heights Page Z
Item Estimated Cost
Pond Construction $3600.00
Storm. Sewer System 8400.00
Parking Lot Construction 279,000.00
TOTAL $39900.00
The cost estimates shown above include a 30 percent allowance for contingincies, engineering
and administrative costs. with the joint use pond, it is anticipated that the cost to be borne by the
Bell site would be 10 percent of the pond construct cost plus a small portion of the outlet facility.
It is expected that the Bell site contribution would be about $5,000.00.
We are enclosing a copy of the topography for the Bell property which is of value in the sale of
this property for development purposes.
If you have any questions on the information contained herein, please do not hesitate to call me
at 651 - 604 -4833.
Very truly yours,
BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC.
m
Joseph C. Anderlik
Enclosure
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