HomeMy WebLinkAbout429 S. WHITCOMB STREET CARRIAGE HOUSE - PDP - PDP130006 - REPORTS - DRAINAGE RELATED DOCUMENT` I Sheldon House B&B
616 W Mulberry St
XS#4715 ��9' L-----------� ---
5004.5 FT ss
NCVD 29 _- 20' ALLEY
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I I 100 YEAR 34�
HIGH RISK o € 100 YEAR
I o° a I FLOOD FRINGE MODERATE RISK f iS FLOOD FRINGE
I I BOUNDARY I 1AGE BOUNDARY
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BENCH MARK
cp CITY OF FORT COLLINS
BENCH MARK #1-11
'r ELEVATION = 5005.44
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\ I I LOCATED AT THE
I N GVD 29 ?�' o SOUTHEAST CORNER OF
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� LOOMIS AVENUE. AT THE
NORTHEAST CORNER OF A
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PROPOSED CONCRETE TRAFFIC SIGNAL
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I THIS PROPERTY IS LOCATED
% WITHIN THE CITY OLD TOWN
FLOOD PLAIN
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Whitcomb
100 'rEAR
MODERATE RISK
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PROPOSED - - - - - --
GRADING - xs 435s -----
SCALE 16 = 30' 5002.8 FT S. WHI TCOMB A VENUE
NGVD 29
B E S ENGINEERING
offFOR
C" CONOR FLANAGAN
PREPARED BY
KEV/N FORBES
2908 CHERLY STREET,
PROJECT.• 429 S WHITCOMB ST
DRAWN.
DATE
Ft. Collins, Colorado 80524
FT COLLINS, CO
KEF
2-25-13
Tele. (970) 295-4874
R L SERWX OMAMN4 DR4n c AND DESM
SHEET TITLE. PROPOSED GRADING
PROJECT
DWG
01MIS7RUMIMLn LN"71O M LAW s 19MCB a PL4MWW
& DRAINAGE PLAN
13-1720
1720—PR
338 ` I Sheldon House B&B
616 W Mulberry St
5004 29 T �9
NGVDQ j ti 20' ALLEY
100 YEAR 34� ohi g 100 YEAR
I; I HIGH RISK Q �o MODERATE RISK
FLOOD FRINGE % I / s I FLOOD FRINGE
BOUNDARY 1 g 1 BOUNDARY
l I �
to
I
I i 150, �� 1
BENCH MARK
I CITY OF FORT GOWNS
BENCH MARK #1-11
I ELEVATION = 5005.44
N G VD 29 ��' 1' LOCATED AT THE
1 Ig 1 SOUTHEAST CORNER OF
5004 BFE / MULBERRY STREET AND
LOOMIS AVENUE. AT THE
NORTHEAST CORNER OF A
BASE CONCRETE TRAFFIC SIGNAL
THIS PROPERTY IS LOCATED
VATHIN THE
to I� , , I FLOOD PLAIN CITY OLD TOWN
whir omb
1 21S \ I 100 YEAR
MODERATE RISK
I I I v l OOD FRIN
BOUNDARY GE
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NGVD 29 T 100 YEAR
HIGH RISK
~FLOOD FRINGE
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1
EXISTING GRADING XS 4358
SCALE 1' = 30' 5002.8 FT S. WHI TCOMB AVENUE
NGV/D 29
FO R B E S ENGINEERING cuEM CONOR FLANAGAN PREPARED BY
KEVIN FORBES
2908 CHERLY STREET, PROJECT- 429 S WHITCOMB ST DRAWN. DATE
Ft. Collins, Colorado 80524 FT COLLINS, CO KEF 2-25-13
Tele. (970) 295-4874
FULL sOMM MORAOM DR4FM40 AhV nESM SHEET THEE.• EXISTING GRADING PROJECT DWG
awvS7Rucn0V, FWNMna.% LAW & MUMOW PLMMW & DRAINAGE PLAN 13-1720 1720—EX
provided at the time of construction including, but not limited to, the provision of
perimeter silt fencing and a vehicle tracking control mat if necessary.
Both the garage addition and carriage house will be located fully within the
moderate risk flood fringe. The carriage house will be within approximately 2.7'
of the boundary between the high risk and moderate risk flood fringe. Both the
garage addition and the carriage house will be constructed with a finished floor
elevation 18 inches above the corresponding base flood elevation (BFE) as
defined by the City of Fort Collins Flood Plain maps.
It is my conclusion that with proper construction practice and observance to the set
finish floor elevation, no adverse affects to the site or to the surrounding
properties are anticipated from the proposed improvement of this site.
Sincerely,
Kevin Forbes, I
2
JARBES ENGINEERITt
Full Service Civil & Structural Engineering
February 25, 2013
Revised April 9, 2013
Glen Schlueter
City of Fort Collins
Stormwater Engineering
700 Wood. Street
Fort Collins, CO 80521
RE: Grading & Drainage Certification Letter for site improvements at
429 So Whitcomb St.
Fort Collins, CO 80521
Mr. Schlueter,
This letter and attached exhibits are to serve as a drainage certification for the
above referenced single family residential property. The property is located at the
Southeast corner of South Whitcomb and West Mulberry. The home was
originally built in approximately 1910 and presently has one single family
residence and a detached garage/outbuilding on the property (see attached existing
grading plan). The surrounding neighborhood is a mix of small business and
single family residential lots.
Proposed site improvements include an 828 square foot garage addition to the
existing home along with a 572 square foot carriage house. Site improvements
will also include 1143 square feet of concrete to be used for drives and walks.
The spot elevations and contours for both the existing and proposed grading &
drainage plans are based on survey data provided by Edmonds Land Surveying,
Inc. dated May 18, 2012.
The property lies within the Old Town 100-year City Floodplain and the historic
storm water runoff presently is directed towards the street gutter systems of both
Whitcomb (front yard) and Mulberry (south side yard). This will be maintained
with the proposed improvements using roof gutters and downspouts to direct the
storm water runoff towards the south and east and into the street gutter system (see
attached proposed grading plan). Any necessary erosion control measures will be