HomeMy WebLinkAboutEDORA ACRES PUD - Filed GC-GENERAL CORRESPONDENCE - 2003-07-31TARANTO
STANTON
& TAGGE
CONSULTING ENGINEEIRS
City of Fort
P.O. Box 580
Fort Collins,
Collins
CO 80521
Attn: Ms. Bonnie Tripoli
Dear Bonnie:
November 10, 1983
Re: Edora Acres P.U.D.
Drainage
Job No. 83-332-000
Edora Acres P.U.D. is located in the Northwest
Quarter of Section 19, Township 7 North, Range 68
West of the Sixth Principal Meridian, City of Fort
Collins, Larimer County, Colorado. It is bounded
on the North by Prospect Road, on the South and
West by Edora Road, and on the East by Edora Acres
First Filing.
Edora Acres P.U.D. is part of an original plat-
ted area known as Edora Acres First Filing being
approximately 13 acres in size. All portions of this
area have been developed, primarily as Multi -Family
housing, except for this parcel. The current site
plan proposes that Edora Acres P.U.D. be developed
as Multi --Family units as well, but in a different
cinfiguration from the original plan.
The site lies adjacent to the North of a major
Fort Coll -ins drainageway known as Spring Creek. Minor
drainage from the site is carried through a 24-inch
storm drain which discharges directly into Spring
Creek. This line is capable of handling the estimated
2 year developed flow of 12.5 cfs. Major drainage flows
overland in an easement to Spring Creek when the water
surface elevation exceeds current ground topography
at the storm drain inlets. It is known that no detention
was originally designed for this site and it is assumed
the reasoning for allowing this to be done is because
due to the close proximity of Edora Acres First Filing
to Spring Creek, letting flows enter this floodway un-
detained theoretically reduces the overall peak flows
in the major drainageway.
Isr
112 W. 11 TH AVE. 6412 S. COLLEGE AVE.
HOLDREG E, N E 68949 FORT COLLINS, CO 80525
(308) 995-6677 (303) 226-0557
Page Two
Ms. Bonnie Tripoli
City of Fort Collins
November 9, 1983
The existing grades on our project fall north to
south onto Edora Road. No change in this natural pattern
will occur upon completion of development. The undeveloped
flows from this site have been calculated to be:
Q2 = 1.0 cfs
Q100 - 3.5 cfs
The developed site has been designed to release flows
undetained into Edora Road. This is in accordance with the
intent of the original site plan which did not call for
detention and allowed direct release into Edora Road at that
time as well. Developed flows for this site have been
calculated as:
Q2 = 3.6 cfs
Q100 = 13.8 cfs
The developed flow from our project is consistent with
the overall expected Q2 developed flow of Edora Acres First
Filing of 12.5 cfs in relation to their areas.
We request that the original status of providing no
on -site detention be detained for the development of this
project. If you have any questions, please contact our
office.
Respectf fly sub t e d j
Robert H.. Schemmerl' g;`P.E.
TARANTO, STANTON & 't'AGGE
CONSULTING ENGINEERS -
RHS:lgc