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STEWART&ASSOCIATES 103 S- MEL933DR1FAX UM, FORT COLLINS, CO 80521
PH. 482-482-9382
Consulting Engineers and Surveyors
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Consulting Engineers and Surveyors
103 S. MELDRUM, FORT COLLINS, CO 80521
PH. 482-9331 FAX 482-9382
BY: PAZ Date: 4-1r I q -i Client: Ju A) r) A A) r tz; 41,-t-r Fc- LTn. Sheet No. 4- of
Project: G e.F- a.0 R P-1 A C VILL q a 0 R U, b
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STEWART&SSOCIATES .103 -9- 482-933MELDRUM1, FORT COLLINS, CO 80521
PH. FAX 482-9382
Consulting En3ineers and Surveyors
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Project: F_,� A-) Et, P, / A P IJ L C_ q G p
Subject: IF -7 - o 'I'l
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Green bri ar Village P.M.
Page 2
The runoff calculations, the grading and drainage plan and the erosion
control report are enclosed as a part of this report. If you have any
questions concerning this P.U.D., please call.
Sincerely,
Richard A. Rutherford, P.E. & L.S.
President
jrr
enclosures
STEWART$,ASSOCIATES
Consulting Engineers and Surveyors
April 5, 1993
Mr. Glen Schlueter
Stormwater Utility
City of Fort Collins
P.O. Box 580
Fort Collins, Colorado 80522
Dear Glen:
The following is the storm drainage report for Greenbriar Village P.U.D.
which is a replat of a part of Sundance Hills, Filing Two, P.U.D. and is located
on Butch Cassidy Drive which will become a cul—de—sac. It is located in the
Northwest a of Section 1, Township 7 North, Range 69 West of the 6th P.M.
The total area of -the site is 3.1844 acres. It is a multi —family planned
unit development that has ten four—plexes and a day care center. The P.U.D.
is a part of Areas "B", "C", and "D" as shown on Sheet 7 of 11 of the Sundance
Hills, Filing Two, P.U.D. prepared by Engineering Professionals Inc. and dated
November 30, 1979. The property slopes gently from northwest to southeast
and will continue to drain to the existing neighborhood detention pond that
is southeast of the existing Coachlight Plaza Filing One. Since Butch Cassidy
Drive is being changed to end in a cul—de—sac, the drainage will be diverted
southerly along the easterly property line and then easterly along the southerly
property line in a concrete pan to the existing 20—foot wide drainage easement
along Coachlight Plaza to the neighborhood detention pond.
The existing two Sundance Hills condominium buildings that are adjacent
on the west to this P.U.D. are offsite flows that will pass through this P.U.D.
The rear of the existing Coachlight apartments also drains northerly to the
existing swale along the common property line with Greenbriar Village P.U.D.
The site was divided into two sub —basins, and the two—year runoff and
the 100—year runoff were calculated using the Rational 'Method for two offsite
basins and for Sub —Basins "A" and "B".
It is assumed that the remainder of Sundance Hills, Filing Two, P.U.D.
will be replatted into a single—family residential use; and, therefore, the
revised route of the runoff to the detention pond was necessary.
James H. Stewart
and Associates, Inc.
103 S. Meldrum Street
P.O. Box 429
Ft. Collins, CO 80522
303/482-9331
Fax 303/482-9382
STORM DRAINAGE REPORT
FOR
GREENBRIAR VILLAGE P.U.D.
APRIL 5, 1993
STEWART & ASSOCIATES, INC.
103 SOUTH MELDRUM STREET
FORT COLLINS, COLORADO 80521
303/482-9331