FS9905-CS 990615Morrison Hydrology Engineering, Inc.
210 Arnold Ave. Arlington, Texas 76010
Metro (817) 461-0321 Fax (817) 274-1338
E-Mail: tonmot 7777(~aotcom
June 15, 1999
Mr. Kenneth M.
Griffin, P.E.
Assistant City Manage=
City Enginoer
City of Coppell
255 Parkway BIrd.
P.O. Box 478
Coppell, Texas 75019
Otf972-304-3679
Metto 972-471-2251
Fax 972-304 3673
Re: Review of CLOMR for River Chase Elementary School (Elm Fork of the Trinity River)
We reozived a faxed copy of the review letter from the City of Copp~ll fer tl~ first time un June 14.
Three oopies ofthe re~/ised repert are l~ing seat toyou at the City of Coppell today, June 15. We are
Comment 1
Include the correct table summarizing the storage analysis
Reaponse l
A new Table 2 has been added to the report
Comment 2
Provide crt~s-section printouts from the HEC-2 storage raodels for existing and proposed conditions.
Response 2
Cross sectioo plots have been provided for the existing and proposed condition storage models and are
included in appendix g.
Comment 3
.4dd a paragrapA explaining why tAt~ ts a CLOM~ request and not a CLOMR-F.
Response3
A paragraph has been ~__ad~d~ to page 5 of the report under FEMA tnformatioo.
Morrison Hydrology Engineering, Inc.
Page
Comment 4
Add a statement explaining that this study lies outside of the CDC regulatory zone.
Response 4
A statement has been added to page 4 of the report under CDC Requirements
Comment
Clari.~v within the report that the effective HEC-2 models were not revised as part of this project
Response
There is a statement on Page 5 of the report trader Hydraulic l~Hnatio~t
Comment 6
Specify within the report text the proposed finished fioor elevation and the water sw'face elevation it
is based on
Response 6
There is a paraaraph m page 4 of the repor~ under Results that specifies the finished floor alev~on
and the water surface elevati~m
Commen~ 7
Add the site location to the existin~
Sixe locations have been added to the maps
Comment 8
Add a note explaining the hatched area sl~B~n on the proposed stora~ computation d~awing in
Apgendtx 8.
P,~'Vonse S
A note has been sdded to the map.
Ifyo~ have any fu~her questions or c~mmants, as always do not hesitate to ~ive us a call,
Sincerely,
Ronald W. Morrisre, P.E., C.F~M.
P.O. Box 478
255PadosayBIvd
Coppell, TX 75019
Phone: (972)304-3679
Fax: (972)304-3570
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