HomeMy WebLinkAboutGrading Plans - 03/01/2019�
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February 27, 2019
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Dan Mogen, EI, CFM
Development Review Engineer
Stormwater Engineering & Development Review Division
City of Fort Collins Utilities
700 Wood Street
Fort Collins, Colorado 80522
Keefe Civil Project Number: 2019-004
RE: 316 Wood Street Drainage Memo for Residential Permit Application
Dear Dan:
The purpose of this letter is to describe the proposed site improvements and potential drainage
impacts to the existing 0.393-acre residential lot at 316 Wood Street. The site is located on the
west side of Wood Street in Fort Collins, Colorado between Cherry Street and Maple Street. The
lot is bound by an existing residence to the north, public right-of-way to the west, and gravel
alleyways to the south and east.
The project site is a developed residential lot with one home, a wooden she-shed, mature
landscaping, one garage and a concrete driveway with access off of the eastern alleyway. The
front yard topography slopes to the northwest, towards Wood Street, while the backyard generally
slopes from the southwest to the northeast towards the existing property fence line and eastern
alleyway. Based on a site visit performed on February 27, 2019, the eastern alleyway currently
appears to drain northward towards Cherry Street.
The proposed site improvements include a garage addition, relocating the gravel parking in the
eastern alley, landscaping updates, and increasing the outdoor living space (see enclosed
Grading and Drainage Plan). Replacing the existing backyard concrete patio, removing a section
of concrete edging, and relocating a section of fence in the northeast corner of the lot are the only
demolition plans for these site improvements.
KEEFE CIVIL, LLC
825 Union Street
Golden, Colorado 80401
(9701215-6808
LOTS 20, 21 AND 22, BLOCK 293, WEST SIDE ADDITION,
FTC (20090031743) (COMBINED 9711227020 PER
20180019429)
B1900114
Grading plan and drainage memo accepted and permit
released 3/1/2019. DJM
The proposed grading and drainage design for the site follows the existing drainage patterns. Per
the table below, the impervious area will increase 1,813 square feet (sf) to a total of 7,912 sf, or
46% of the total lot area.
316 Woad Street Drainage Memo Keefe Civil Project No.: 20'! 9-�04
Page 2 of Z February 27, 2a19
Historic Area Developed Area Change ln Impervious
Hardsca or Hard Surface s s Area s
,4sphalt, Cancrete 1 �275 2,250
Roaftop 3,114 4,4Q4
Pavers Pla house) 320 320
Gravel 1,390 938
Total Impervioas Area 6,099 7,912 1,815
Based on the aforemer�tioned site visit and the enclosed design, it is my professional opi�ion the
propas�d site impravements will not negatively impact the stom�water drainage to existing
downstream property awners.
Thank you for ihe opportunity to submit this dra�nage memo. Plsase do not hesitate to reach
out to me if you have any questions ar comments regardin� the above items. {970) 215-6808
Megan I.. Keefe, PE / Manager
Keefe Civil, LLC
Enclosure
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Cc� Steve Joseph, Craftsmen Builder� Ina.
Best regards,
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Pavers(Playhouse) 320 320
Gravel 1,390 938
TotallmperviousArea 6,099 7,912 1,813
1 OF 1