HomeMy WebLinkAbout1999-09-03 BRA Ltr to OPH SEP -03 -1999 16:05 CITY OF OPH P.03/03
S onestris Bonestr". Rosene. Anderilk i nd AssociarW an Aff/imarive AeriorVEq�al Opporruniry Employer
Princlppls;• Otto G. Sonestroo, RE, - Josep RE, - Marvin L. Sorvala, PE. Glenn R. Cook, R5, - Robert G. Scnunicnr, P.E.. Jerry A. B ourdon , P.E. Rosene .
Robert W. Rosene, RE.. MCnard E, Turner, P.E. and Susan M. Eberlin, CPA_ Senior Consultants
A nderlik & AMCIate Plintip Howard A. Sanford, P.E. - Keith A. Gordon, P.E. - Robert R. Pferrerie, P.E.
Richard W, Foster, P.E. - David O. Loskora. P.E.. Robert C. Russek, AIA, - Mark A. Hanson. PE. .
Micnael T. Rautmann, RE, . Ted K.Fleld. P.E. - Kennorn P. Anderson, PE. - Mark R. Ralfs, P.E.
Associ Sidney P. Will1ams0n, RE., L.S. - Robert F, Kotsmtrh . Agnes M. Ring - Allan Rick Schmidt, RE,
Offices.' St Paul, Rochester, Willmar and St. Cloud, MN • Mllw*ukee, Wi
Engineers be Architects W ebslre .'wWW0ones
September 3, 1999
Ms. Kris Danielson FILE C
City of Oak Park Heights
14168 - 57th Street N.
P.O. Box 2007
Oak Park Heights, MN 55082 -2007
Re: Ryder Bus Parking Facility
Our File No. 55 -99 -000
Dear Kris:
We have reviewed the grading, drainage and site plans for the Ryder Student Transportation
facility proposed to be located on Stage Coach Trail North. The plans are acceptable from an
engineering standpoint with the following two exceptions.
1 The plans show that they will provide 29,000 cubic feet or 0.67 acre -feet of water stored
below the normal water level in the pond to be constructed. The design criteria calls for a
pond wet volume equal to the volume of runoff from a 2.5 inch rainfall event plus 20%
additional volume for sediment storage. This would result in required storage of 0.76
acre -feet time 1,2 or a total of 0.91 acre -feet.
2• The submerged outlet proposed for the pond is 15 inches in diameter. Because
submerged outlets are prone to clogging, it is recommended that the submerged pipe be
' 21 inch or 24 inch in size. The pipe at the outlet or normal water elevation would remain
as a 15 inch diameter pipe.
If you have any questions on this matter, please do not hesitate to call me at 651 604 - 4833.
Very truly yours,
BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC.
C; '
Joseph C. Anderlik
JCA: dh
2335 West Highway 36 a St. Paul. MN SIMI
TOTAL P.03