HomeMy WebLinkAboutDrainage Reports - 06/06/1988EDEIVE
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JUN 61988 (/
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DRAINAGE REPORT
OF
PART OF BLOCK 6
FORT COLLINS, COLORADO
PREPARED FOR
SCHRADER OIL COMPANY
BY
STEWART & ASSOCIATES, INC.
214 N. HOWES
FORT COLLINS, COLORADO 80521
STEWARr&kSSOCATES
Consulting Engineers and Surveyors
June 3, 1988
Mr. Glen Schlueter
Strom Drainage Department
P 0 Box 580
FortCollins CO 80522
Dear Glen:
I have prepared a drainage report for Schrader Oil Company for their
proposed warehouse on parts of Lots 1, 3, 5, 7, and 9, Block 6, Fort
Collins, Colorado, for your review.
I am requesting a variance on behalf of the owner -for no onsite deten—
tion due to the closeness to Poudre River.
If you have any questions or need more information regarding this
project, please let me know.
lkm
James H. Stewart
and Associates, Inc.
214 N. Howes Street
P.O. Box 429
R. Collins, CO 80522
3031482-9331
Sincerely,
Franklin D. Blake, P.E. & L.S.
Secretary/Treasurer
DRAINAGE REPORT
PART OF BLOCK 6
FORT COLLINS, COLORADO
LOCATION:
The property is part of Lots 1,3,5,7, and 9. Block 6, City of Fort
Collins, Colorado. The area is 0.267 acres. It is bounded on the North
by Willow Street; the East by Pine Street which is not constructed; the
South by the Colorado and Southern Railroad and on the West by a brick
building.
EXISTING CONDITION:
The site is hard pan dirt with a sparce gravel covering. The ground
slopes to the Northeast toward Willow Street. The existing slope is
about 37. on the West side and 2 % on the East side. All the run-off
from the property sheet flows across Willow Street to a dirt Swale, then
along Willow Street in the dirt swale to Pine Street then Northeast along
Pine Street to the Poudre River. The.site is about 1200 feet from the
Poudre River. The Existing Flows from the property are: Q-2 year =0.32
cfs; Q-10 year = 0.58 cfs; Q-100 year = 1.25 cfs.
DEVELOPED CONDITION:
The owner proposes to build a 5100 square foot warehouse on the property.
The remaining portion of the lot will be either gravel or asphalt. For
drainage calculations we have considered the site for asphalt. The site
will not be designed for detention because of its close distance to
the Poudre River. The developed flows from the site are:. Q-2 year =
0.86 cfs; Q-10 = 1.52 cfs; Q-100 year = 2.67 cfs. The site will run-
off to the river the same way as the existing condition.
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Franklin D. Blake, P.E. & L.S. Z
7
839
OF
COMPUTATIONS
James H. Stewart & Associates, Inc." 2144 N. Howes St. Ft. Collins, CO 80521 (303) 482-9331
By: Date Client: Sheet No._Zof Z
Chkd By: Date - Project: F/ 5-a/ Job No.
Subject
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COMPUTATIONS
James H. Stewart & Associates, Inc. 214 N. Howes St. Ft. Collins, CO 80521 '(303) 482-9331
By: Date Client: �X1270�rr 4121 C Sheet No. 2 of
- 7,-
Chkd By: Date- Project: Job No.
Subject
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