HomeMy WebLinkAboutDrainage Reports - 07/22/1987RWINC
Engineering Consultants
2900 South College Avenue
Fort Collins, Colorado 80525
303/226-4955
July 1, 1987
Ms. Susan Hayes
City of Fort Collins
P.O. Box 570
Fort Collins, Colorado 80522
RE: AMENDED FINAL DRAINAGE REPORT FOR THE CENTRE FOR ADVANCED
TECHNOLOGY, THIRD FILING
Dear Susan:
This third filing of the Centre for Advanced Technology is lo-
cated in the Southwest corner of the future intersection of Cen-
ter Avenue and Meadowlark Avenue. The west boundary of this site
is the New Mercer Ditch. The property is located in the South-
west Quarter of Section 23, Township 7 North, Range 69 West of
the 6th Principal Meridian.
The site currently is covered with natural Colorado field grasses
and slopes to the southeast at less than 2%. A field road
meanders along the New Mercer Ditch that runs along the West side
of the site. When fully developed this property will consist of
business/office buildings, parking areas and landscaped areas
(see plan).
Using the most current City of Fort Collins criteria, and the ra-
tional formula a 2 year historic release rate was calculated to
be 0.51 cfs. With this release rate, a required pond volume of
0.34 acre-feet was determined (see Supplementary Calculation
sheet). The pond and site grading are shown on the attached
drainage plan. The pond will temporarily discharge into an over-
land swale which will direct flows into the Meadowlark Avenue
storm drain some + 410 feet South of proposed in the Centre for -
Advanced Technology Special Improvement District.
Other Offices: Vail, Colorado 303/476-6340 • Colorado Springs, Colorado 3031574-3504
When this site drainage and grading plan and design is
implemented, drainage flows will pass through the streets and
parking areas to the pond in a safe and controlled manner.
Sincerely,
RBD, Inc.
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Stan A. Myers, P.E. p p
Project Manager � 18060
cc: 035-028A
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