HomeMy WebLinkAboutDrainage Reports - 07/07/1995STEWARr&ALSSOCIATES
June 30, 1995 Consulting Engineers and Surveyors
IN
;=ate
Mr. Basil Hamdan lai
Stormwater Utility
City of Fort Collins
P.O. Box 580
Fort Collins, CO 80522
Dear Basil:
This letter is regarding the storm drainage for the proposed Bmeggers Fresh Bagel
Bakery, which is situate on a part of Lot 2, Campus West Shopping Center. The site is at the
Northwest comer of West Elizabeth Street and South Shields Street intersection. The historic
site contained a convenience store and gasoline sales. The area of the site after right-of-way was
taken for the Shields Street widening is 0.1929 acres. The historic impervious area is 7259 square
feet, and the developed impervious area will be 7304 square feet. The 45 square feet increase of
hard surfacing is 0.5% of the total area and is well within the allowable increase that does not
cause the need of detention. There will be no onsite storm water detention on this site.
The drainage pattern for the site will not change. The adjacent property to the North of
the site partially historically sheet flows across the site. That pattern will not change. The
parking lot for Brueggers Bakery will sheet flow from North to South and will discharge through
the driveway to the Elizabeth Street North gutter and then East 48 feet to an existing curb inlet.
The East half of the building and the outdoor patio area will drain into fifteen 6-inch diameter area
inlets in the landscaping area and the storm water will be carried in a 4-inch diameter perforated
P.V.C. pipe to the existing curb inlet in Elizabeth Street.
The erosion control that will be provided is the foundation which will be constructed as
soon as the existing building and existing pavement are demolished. Base material will be left or
replaced in part of the parking area to preclude erosion. A silt fence will be constructed along the
East and part of the South property lines. The erosion control calculations are included with this
letter. Also, the cost of erosion control is enclosed.
If you have any questions regarding this site, please call.
Sincerely,
a a.
Richard A. Rutherford, P.E. M.S.
President
rsc
enclosures
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
STEWART&kSSOCIATES
Consulting Engineers and Surveyors
June 30, 1995
Mr. Basil Hamdan
Stormwater Utility
City of Fort Collins
P.O. Box 580
Fort Collins, CO 80522
Dear Basil:
The following is the cost estimate for erosion control facilities for Brueggers Fresh Bagel
Bakery at the Northwest comer of West Elizabeth Street and South Shields Street.
1. Silt Fence 140 L.F. @ $2.00 $280
2. Reseeding 8404 S.F. @ $.0298 $250
The collateral will be the $1000 minimum fee.
If you have any questions regarding this cost estimate, please call.
Sincerely,
G2Ac G-
Richard A Rutherford, P.E. & L. S.
President
rsc
James H. Stewart
and Associates, Inc.
103 S. Meldrum Street
P.O. Box 429
Ft. Collins, CO 80522
303/482-9331
Fax 303/482-9382
• M ,
- RAINFALL PERFORMANCE STANDARD EVALUATION'
--------------------- ---.---------------------------------------------
PROJECT: bRucacses.Pre ESH BAGec J341crey STANDARD FORM A
COMPLETED' BY: R A r, DATE: uE 191r
—9.��
------------- -- ---------------------
DEVELOPED ERODIBILITY Asb Lsb Ssb Lb Sb PS
SUBBASIN_ ___ZONE____ _(ac)(ft)__ ___ __(%)__ Meet)_ _.��)__`__(')__
TOTALSera .MooeRAre O.19Z9 e ' o
ld3 /•Z7/o /03
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EFFECTIVENESS CALCULATIONS
----------------------------------------------------------------------
PROJECT: ' 8R•ueGGees. FC6-14 LSAG64. 16.4KeAY STANDARD FORM B
COMPLETED BY: R 4e DATE: Jwee 2',it�r
Erosion Control
C-Factor
P-Factor.
Method
Value
Value Comment
----------------- -----------------------------------------
BA2.e S-0I L—
/.00
Fou.vDAr-/oPJ
0.01.
l 00- D.OS79At.
SILT Fr=vc-E
/-00
OSD
B:^SS MATEp—)A1.
Q.OS
/.00 0.04517Ac.
---------------------------------------------------------------------
MAJOR
PS SUB AREA
BASIN
(%)
BASIN
(Ac)
CALCULATIONS
-----
TOTA L
TeACT
- 75$-
-----
To —AL
Te4c-r
------
z
o.lgz'A�LI
---------------------------------------------
W T D C =
C' 0 S?/x /.00) + (6.0s-M k 0101) f (4s7v, 05'
W-To G
= 44$
WTrS P
= O-SO
� F F ' c
C�-- (0,98x-svj7 k /Oo = We O %o
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----------------------------------------------------------------------
DI/SF-B:19B9
CONSTRUCTION SEQUENCE \
PROJECT: B F rH 8a. _r ZAKERy STANDARD FORM C
sEQuE,NcE. FOR 19 9S ONLY COMPLETED BY: P—.'4 P- DATE: QUA/ ,Irr
Indicate by use of a bar line or symbols when erosion control measures will be installed.
Major modifications to an approved schedule may require submitting a new schedule for
approval by the.City Engineer.
1 99S YEAR I
MONTH j IFIM IAr I MIJ IJ IA IS ID IN p l
---------------------- ---- ------------------ ---------- ----- ---- ---- ---- ---- ----I
OVERLOT GRADING
I
WIND.EROSION CONTROL
Soil Roughing
Perimeter Barrier I
Additional Barriers I
Vegetative Methods I
Soil Sealant
Other
RAINFALL EROSION CONTROL
STRUCTURAL:
Sediment Trap/Basin
Inlet Filters
Straw Barriers
Silt Fence Barriers
Sand Bags
Bare Soil Preparation
Contour Furrows
Terracing
Asphalt/Concrete Paving
Other
VEGETATIVE:
Permanent Seed Planting
Mulching/Sealant
.Temporary Seed Planting
Sod Installation
Nettings/Mats/Blankets
Other
STRUCTURES: INSTALLED BY
VEGETATION/MULCHING CONTRACTOR
DATE SUBMITTED
HDI/SF-C:1989
JANU''A?Y 1991
MAINTAINED BY
APPROVED BY CITY OF FORT COLLINS ON
DESIGN CRITERIA
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