Riverchase(5)-CS 880720 FILE COPY
.
': NATHAN D. MAIER .
__ ~ CONSULTING ENGINEERS, INC.
1- /
- July 20, 1988
· - '.
, Ii,:
Technical Operations Division " .,
500 C St., S.W. .. ~
Washington, D.C. 20472 .. .
Re: Riverchase Reclamation Project
NDM No.: 87-12-150. C
Dear Mr. Miller:
On May ~6, 1985, the Federal Emergency Management Agency (FEMA) issued a conditional Letter of Map
Revision (LOMR) for the subject proposed project. At that time, the.tract was known as the "Lesley Tract,".
and the technical data to support the reclamation was contained in a report entitled Engineering Report to-
the Dallas County Commissioners Court for the Creation of Dallas County Levee Improvement District No.
18, and dated October, 1984.
In October, 1985, the Texas Water Commission approved the Plan or Reclamation and subsequently the
Northwest Dallas County Flood Control District was created. Construction (filling of the site and overflow
swale construction) was to commence by October 2, ~986, and be completed by October 2, 1988. Thc project
was now known as the "Riverchase Project."
In 1987, when the Fort Worth District Corps o[ Engineers revised thc Flood Insurance Studies (FIS) for the
Elm Fork of the Trinity River, construction of the proposed project was well under way, and the proposed
' project was !ncorporated into the HEC-2 model for the Elm Fork. Therefore, thc revised FIS for the City of
Coppell' reflects the'"Riverchase Project." Enclosed is a copy of thc Work Map used by thc Corps in this
restudy. The filled area for the Riverchase Project and the overflow swale are shown on the west overbank of
the Elm Fork upstream o[ Belt Line Road and the Southwestern Railroad.
The reclamation phase of this project, flu and overflow swale, is now complete. Enclosed is a copy of the "as-
built" drawing with certification that the fill has been placed to the elevations indicated. I have marked in red.
the 100-year wa~er surface elevations (with floodway) fi'om the leis study.
It is our understanding that a revised Flood Boundary and Floodway Map (FBFM) will be issued for Coppell
which will show the project as removed from the floodplain and floodway. We would appreciate a copy o~ the
revised FBFM when it is issued ....... ' · .-
. ~-.¥!:. ...
Sincerely,
NATHAN D. MAIER
CONSULTING ENGINEERS, INC. ": :."
Ervin A. Meyer, P.E. ."'" ' '
EAM/rdp
Enclosures (2)
~ City of Coppell
Three NorthPark/8800 N. Central £xpwy./$uite 300/Dallas. Texan 7~,2311{~14)' 739-4741