HomeMy WebLinkAboutAT HOME PROFESSIONS IP SITE PLAN REVIEW - 10 93 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTSTEWART&&SSOCIATES 103 S. MEL9 3DRFAXr-ORT gOLLINS, CO80521
Consulting Engineers and Surveyors II
By: P'f S — Date: Z 5''f 3 Client: Fa r-I L-ICSTG h Sheet No. —of
Project: GL �i Caf��^�1 c' a�e ) US ( it1 C.f.Iy f�C
Subject: EFQ S a h O n4ro / COS�I
I
I I
i
CONSTRUCTION SEQUENCE
PROJECT:.
Lo-r
`E- C011indsle Business r�r
STANDARD FORM C
SEQUENCE.
FOR 19
c13 ONLY COMPLETED BY: FIR
DATE:
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.
YEAR
MONTH .4 .I M �' J I -
OVERLOT GRADING------------- ----------- T-------------------------- ----------
WIND EROSION CONTROL
Soil Roughing
Perimeter Barrier
Additional Barriers
Vegetative Methods
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
'40I/SF-C:1989
--------------------------I
MAINTAINED BY
APPROVED BY CITY OF FORT COLLINS ON
EFFECTIVENESS CALCULATIONS
--------- ------- - ' ---------- ----------------
---------------------------
PROJECT: LOT 4- 60llir,dc54c? GUsiness wrk STANDARD. FORM B
COMPLETED BY: pig DATE: 2 3
Erosion Control
C-Factor
P-Factor
Method
Value
Value Comment
- - - - - - - - - - - --- -- - --T- ------------ ----- -- --- - ----- - - - -- - - - -
6are soil I.UU I.0a
51)� Fencc
1.0�/
0150
4oncr-4e
0.01
r,00
pa✓cn,eft� ,
p•ol
0
, radci �asc
0,10
1.00
-------------
HAJOR PS.
BASIN (ro)
crr 4 •77.0
SUB
BASIN
AREA
(Ac)
r.04-
--------------------------------------------I
CALCULATIONS
-----=----------------------=-----------=--
�3ot soil 0,Z0 Ac
cof�co-/s Ac.
W+j G=.(O.ZujC�•v�t&a;s�(a.a��+�0.G9�(o.io�
v.27
,LF'F C) X100
-----------------------------------------------------------------------
�ni /CC_R • 1 ORO '
RAINFALL PERFORMANCE STANDARD EVALUATION
PROJECT:
LOT ¢ [ollindole
5usioeSf
Pork
STANDARD FORM A
COMPLETED
---------------
BY:/jz
DATE: r q7
DEVELOPED
---------
ERODIBILITY
-----------
Asb
-----------------
I Lsb
Ssb
-------- --------
Lb Sb PS
SUBBASIN
ZONE
I (ac)
(ft)
(%)
(feet)
()
---------
I-OT 4-
-----------
Modera-i c
-------
1, o4-
I-
i .300 '
�.0
300
--(%)
1.0
1 -7
I
i---------------------------------------------------------------------�
HDI/SF-A:1939
Baldwin Construction, Ina.
Weston "At Home" Building
Protect Schedule
Bul
00
N
N
C
.-i
week
M.
COLLP1,)r7 ALl_ C-CLi- C-VVR6E
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== 2.4 Ate—
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1PA3 a// \ dis+vrb 6hields'd'C
/ N / E
E \ ram`
i ��//D TENno :99CB DETEJJTIO . RE UIRED = '}8660 c• F. I —
1 1-ILLOw cs
% 3LE OUTALOW = J.Z5 a <; ✓ \�' I
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/ / //� / ✓ ��^^� LOP 7 I�
/ -- - muSCALl "= 14o s -
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FUTUicE STR E I A,OTOMAT1014/ DRIv� tea`; ,; I
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%HIS 15 A COPY OF THC- MAP FRO/-4 i}JE� I'
Ci II Fj J ' COLLINPALE BUSINESS PARS 1989 DR/aINAGE RERJRT A
42 o LOT 4- R(;NOFr- 1-:)PPE(P Z
V V J
STEWART&kSSUCIATES 103 S. 93DRFAX 4ORT COLLINS, CO 80521
82
Consulting Engineers and Surveyors
By: Pl]Z Date: z 3 93 Client: Far-1 \;✓eA0h Sheet No. of
Project: Lai- ¢ 6oArndadP QvsrnPss 'horrs k SecoAJ
Subject: 510 r r-t ff U" 0 q rG � C C,- 1 I G h s
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COLLINDALE
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VICINITY MAP
SCALE: 1' - 1000'
NORTH
Lot 4 of Collindale Business Park Second
Page 2
EROSION CONTROL
The entire Lot 4 site will be stripped and graded during the first days
of construction, and immediately following that construction of the concrete
foundations and pad will begin. The small size of the site and the construction
activity do not allow revegetation during the construction period. The
contractors' project schedule indicates construction will begin April 1, and
paving will be completed June 11. During the construction phase, we plan to
install a silt fence along the east and north sides of the site to prevent
sediment from leaving the site.
The site is in a moderate wind erodibility zone, and the construction
of the building pad and curbs will provide the 200—foot barrier spacing required
to prevent wind erosion.
All storm drainage and erosion control procedures shall comply with the
City of Fort Collins criteria.
Phillip I. Robinson, P. E. & L.S.
*' 4502 a*
8.
i .� q pj• e �
STORM DRAINAGE AND EROSION CONTROL REPORT
LOT 4, COLLINDALE BUSINESS PARK, SECOND FILING
SITE LOCATION AND DESCRIPTION
Lot 4 of Collindale Business Park Second Filing is a 1.04 acre net area
and 1.37 acre gross area site located at the southeast corner of Automation
Way and Lowe Street. It is part of the area included in the Drainage Report
for the Collindale Business Park prepared in March 1989, and is within the
Fox Meadows Basin.
Detention is provided for this site in the Collindale Business Park
existing pond located at the northeast corner of the Collindale Business Park
development. The total pond volume for 34.4 acres was 7.19 acre feet, which
is 0.209 acre feet per acre. Therefore, the detention provided for Lot 4 is
(0.209) (1.37) = 0.286 acre feet.
Runoff from this site is easterly along Lowe Street to an existing
drainageway running north along the west side of Timberline Road. This
drainageway is comprised of inlets, pipes and a drainage channel, and it empties
into the existing detention pond.
The existing Lot 4 is undeveloped and is covered with vegetation, but
the steets surrounding the site are constructed with curb and pavement.
DEVELOPED SITE
The site will be developed with a building, paved parking, and landscaped
areas. Of the 1.04 acre net site, 0.19 acres w.il be landscaped, and 0.85 acres
will be hard surface.
The attached calculation shows the site runoff for 2—year, 10—year and
100—year storms. These runoff quantities are a part of the quantities shown
on the attached site plan which was prepared for the Collindale Business Park
report in March 1989.
The developed site will drain from southwest to northeast, and the runoff
will exit the site via surface drainage at the northeast driveway into the
south gutter of Lowe Street. The Lowe Street gutter flows east to an existing
4—foot inlet into the pipe/swale drainageway which runs north along the west
side of Timberline Road.
The developed C value used in the 1989 Collindale Business Park drainage
report was 0.85, and the composite C for Lot 4 calculates to be 0.82, so the
runoff quantities from Lot 4 are slightly less than the quantities provided
for by the original design.
There will be no offsite flow onto Lot 4.
STORM DRAINAGE
AND
EROSION CONTROL REPORT
FOR
LOT 4 OF COLLINDALE BUSINESS PARK
SECOND FILING
PREPARED
FOR
EARL WESTON
c/o ALLEN D. CURTIS AND BALDWIN CONSTRUCTION
PREPARED
BY
STEWART & ASSOCIATES, INC.
103 SOUTH MELDRUM STREET
FORT COLLINS, COLORADO 80521
303/482-9331
FEBRUARY 15, 1993