HomeMy WebLinkAboutDrainage Reports - 07/15/1983James H. S1;ewax t and Associates, Inc. )
Consulting Engineers and Surveyors
214 Nodh Howes Street
P.O. Box 429
Fort Collins, Colorado 80522
(3031 482-9331
July 11, 1983
Mr. Robert Smith
Storm Drainage Engineer
City of Fort Collins
P. 0. Box 580
Fort Collins, Colorado 80522
Dear Bob:
Laboratory:
301 Lincoln Court
P.O. Box 429
Fort Col lins, Colorado 80522
(303) 484.8309
Please find enclosed calculations and the mass diagram for Baystone
Village. It is a proposed planned unit development in the Penthouse
Subdivision located on Baystone Drive between City Park Avenue and
Bluebell Street. Baystone Village is zoned R-H and has an area of
2.3133 acres. It is proposed to detain, on site, the difference be-
tween the two-year historic runoff and the 100-year developed runoff.
The required detention volume is 18,090 cubic feet and is being pro-
posed in five ponds in the parking area with an underground storm sewer
system. The storm sewer will have restriction plates in each area inlet
that will detain the runoff on the surface of the parking areas. The
allowable outlet rate for the oroject is 0.49 cubic feet per second.
The storm water will discharge through a slot in the curb and walk on
the west side of Bluebell Street, The runoff will then flow south along
the west side of Bluebell Street several hundred feet and then cross
Bluebell Street in an existing concrete pan and then enter the existing
catch basin at the northeast corner of Bluebell Street and West Plum Street.
There is no offsite runoff onto the proposed Baystone Village, and there
will not be any storm drainage from the proposed project allowed to dis-
charge onto other private land.
If you have any questions regarding this drainage plan, please call.
Very truly yours,
JAMES H. STEWART AND ASSOCIATES, INC.
Richard A. Rutherford, P.E. & L.S.
Secretary/Treasurer
kah
Enclosure
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