HomeMy WebLinkAboutPermit Correspondence 2001-1-31
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Branch Engineering I Inc.
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Project No. 01-026
31 0 5th Streee
Springfield, Oregon 97477
(541) 746-0637
Fax (541]746.0389
=#: ~-Olez.f>-Ol
January 31, 2001
Patrick Sice .
4077 Southway Loop
Springfield, OR 97478
Re: Floodway Evaluation for Proposed House & Garage
at= farbor Drive, Springfield, OR
Dear Mr. Sica,
I have completed a f100dway evaluation for your proposed house and garage at the subject site.
According to FEMAmapping (Firm Panel 41039C1144F), the f100dway boundary for the
Willamette River runs through the middle of the project site with the north half of the site being
located in Zone X (outside the f1oodway), and the south half of the site being located within the
identified f1oodway. The proposed house location as provided on the attached site plan is
located within the identified f1oodway. The base flood elevation for the site is 450.2 feet.
To determine the potential impacts the proposed house would have on the f1oodway, a site
topographic survey was performed. The results ofthe topographic survey indicated the
buildable portion of the site (which includes the proposed house pad and garage pad) ranges in
elevation from 450.7' - 453.2'. These existing ground elevations are higher than the base flood
elevation for the site. Due to the existing ground elevation being higher than the base flood
elevation, it can be said the proposed construction will not adversely affect conveyance of the
Willamette River during a base flood discharge.
Respectfully submitted,
Lane Branch, P.E.
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