ST9301-CS 921016The City With A Beautiful Future
P.O. Box 478
Coppell, Texas 75019
214-462-0022
October 16, 1992
Mr. Phillip Westin, P.E.
Svererup Corporation
4311 Oak Lawn, Suite 300
Dallas, TX 75219
RE: Elevation of Street in Relation to Floodplain
Dear Mr. Westin:
At the October 8, 1992 concrening this project, I recall a comment made by Bill Jessup, of Dallas
County, that the top of curb should be 1 foot above the floodplain elevation. Our Floodplain
Management Ordinance requires "A freeboard to the lowest top of curb of two feet in the
effective FIS base flood or one foot in the design base flood, whichever elevation is greater, for
Freeways and Major and Minor Arterials". This stretch of Sandy Lake Road is a major arterial
on our Thoroughfare Plan. Therefore, the elevation of the top of curb should be as directed in
our Floodplain l~[anagement Ordinance.
If you should have any questions, please feel free to contact me at your convenience.
Sincerely,
Kenneth M. Griffin, P.E.
City Engineer
KMG/bd
westinlt
' ' T
3. Utilities, Bridges, Roadways and other Public Use Facilities
a. All public utilities includi~ operational pumps, transformers,
switchin_~ equipment, and related mechanical and electrical
equipment and facilities for sewer, water, gas, electrical, and
comm~mication systems shall be located and constructed to minimize
or eliminate infiltration and damage during floodi~ conditions.
b. All public utility equipment a~d bridges shall be desil~ned to
remain operable and accessible with a minim,,m of 2 feet of
freeboard above adjacent base flood elevations or 1 foot above
design base flood elevations, whichever is higher.
c. 'Roadways and parki~ Io~s shall be designed to remain usable and
accessible with adequate elevation ~bove the base flood as follows:
(I) A 'fr~ m the lowest top of curb of tw~ feet in the
effective lrlS base flood or one foot in the design base flood,
whichever elevation is greater, for Freeways ami Major and
Minor Arterials.
(2) A freeboard to the lowest top of curb of one foot in the
effective FIS base flood or the desilu base flood, whichever
/ elevation is greater, for CoUecu~r Streets.
(3) A minimum pavement flow-linc~ elevation no lower than the
effective FIS base flood'or the design base flood, whichever
elevation is greater, for Residential Streets and for Parki,~_~
Lots.
d. Provisions for the contninment, treatment and/or removal and
disposal of possible spillage or discharge of fuels, hazardous
materials, or wastes related ~o the operation or maint,,,,,,nee of
public utilities shall be clearly identified i~ cons~
drawi~s and an emergency operations plan, or an assessme~ of
impacts of release of pollu~nts of any kind, shall be prepared and
approved by the Floodplain Administrator.