HomeMy WebLinkAboutGALLEGOS SUBDIVISION - 10-88 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTSTEWART&ASSOCIATES
Consulting Engineers and Surveyors
February 2, 1988
Mr. Robert Smith
Director of Storm Drainage Utility
City of Fort Collins
P 0 Box 580
Fort Collins, Co. 80522
Dear Bob:
The following is the storm drainage report for the Gallegos
Subdivision which is located Northwest of the intersection of Laporte
Avenue and North Taft Hill Road. It is located in the West Vine Drainage
Basin.
The proposed two lot subdivision lies between two existing residences
and contains a gross area of 0.31 acres more or less. The subdivision
is located in the 100 year existing and developed flood plain. The
flooding in the 100 year flood will be very shallow. The land slopes
from the Southwest corner with an elevation of 5054.9 to the Northeast
corner with an elevation of 5053.9. The expected water surface elevation
varies from 5054.0 at the East side of the subdivision to 5055.0 at the
West side of the subdivision. The proposed finish floor elevations are
shown on the grading plan and are greater than 1.50 feet above the 100
year flood elevation. The finish floor elevations were determined in
order to provide good drainage away from the proposed residences.
According to the West Vine Drainage Bason study, made by Engineering
Professionals, Inc., a basin wide detention pond is proposed in the area
East of Taft Hill Road and South of Vine Drive. It is proposed to not
provide on site detention on the proposed two single family lots. The
owner will pay a storm drainage fee for not providing on site detention.
He will also agree to be a voluntary member of a Special Improvement
District to build the basin wide pond.
The drainage calculations for the proposed subdivision are enclosed.
If you have questions regarding this minor subdivision, please call.
1km
enclosure
James H. Stewart
and Associates, Inc.
214 N. Howes Street
P.O. Box 429
Ft. Collins, CO 80522
303/482-9331
Sincerely,
CAL ' I r re, t V�
Richard A. Rutherford, P.E. &
President
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