Thompson, Johnny-CS 910801 Federal Emergency 1VIanagement Agency
Nathan D. ~i~r ConsulCin~ Dallas Co~y ....... "
Et~lnee'rs, ]:ne. Texas ~" '-
Three ~orth Park Co.unity No.: ~80170
8800 North Central ~xpressvay,
Suite 300
Dat].as, Texas
ThJ. e l~ccer ~.~ a8 ~ ~ollo~-up ~o your ~uly 3, 1991 t~l~phon~
~uly 3, 1990 r~vt~ton r~qu~sc ~oz ~ho Flood Insuranc~ ~udy (FIS) ~nd ~lood
Insurance ~Ce Map (FI~) for the City og Coppoll, ~iis request, with data
prepared by Nathan D. Haie~ Consulting ~ngineers, Inc. (~H), involved
revis~nS the Federal ~r~ency Nanagemeuc Agency (F~)-desi~ted floodway
~or the Elm Fork o~ the Trinity Ri~er notch og ~he Sc. ~uis and ~bu~hvostern
Railroad and Belttine Road In an area kno~ as ~he ~S Trac~. Alon~ wi~h the
~ubm[tkal, an untitled floodplain ~or~ap ~as submitted depiccin
fflood~ay con~isurakion.
~e basis of this requested floodway revtslon ~as co modify CR points at cross
section 890~0 of the Elm Fork o~ cbc Trinity Rlvo~ H~C-2 models to more
accurately re~tect the upscre~ ine~fecc~ve ~1o~ area, duo co the embankment
o~ the St. ~uis and SouchvesCorn RaiLroad. As sca~od in our November 30,
1990 letter co the City of Copp~ll, our revio~ o~ the revised floodway
revised floozy c~l~ration [nCo a revised FIS and FI~
CoppetL,
'Ic is mos~ efficient and cost-ei~ect[ve ~or F~ to inco~orate the maximum
n~ber o~ revision requests when preparin~ and publishing a revised FIS and
FI~ [o~ a given co--unity. Sinc~ January 1989, ye have been processing a
separate r~vision co tho City off copp~]l. FIS and FI~ Co reilecC
all screams prepared by K[mley-Horn and Associahes, Inc. (~);
has boon necessary ~or us ~o Coordinate tho HRUS Tract floodway ~ovision
requos~ ~ich the ~-~ restudy. Ho~ever, due co n~orou~ delays in re~oivin~
all ~he necessary data to support the ~IA r~study, ~e have not yet been able
to issue a prnll.mLnary r.vls.d FIS and FIRM for t.he ClOy of Copl, el, l.
issuin~ che preliminary rmvinod PIS and FI~ for the City of CoppeLl, to
reflec~ ~he ~ restudy and HR~S Tract: fl. oodway revision by che e~td of
September 1991.
Should you have any questions
Hiller of our Headquarters
Since~ely,
~illia~. Locks
cc: ~e llonor~ble Hark ~olffe, Hayer of ~e C~cy of Coppell
Hs. H.'Shohre Dan~s~and, P.K., Accin~ Coppetl City Engineer
Hr. Ro~ld ~. Norrison, P.~., Senior Hyd~olo~isc. Horri~on
Hydrolo~/En~lne~ln~, Inc.