Villages C P3&4-AG 920428AGENDA REQUEST FORM
CITY COUNCIL MEETING April 28, 1992 ITEM NUMBER 14
ITEM CAPTION:
Consideration of approving a variance to the Floodplain Management Ordinance
#87930, Article 4, Section B, Item ~11 (A), which states that the Floodplain
Administrative must "assure that conditional approvals are received from FEMA
before a Floodplain ~Development Permit is issued "for the proposed
C~.~pel~ Ph&~e III~:~long the Elm Fork Trinity River and Denton creek.
cto x-.....Cit y Engineer
SUBMITTED BY: (/'CD[re f~gnatufe) OTHERSTAFF REP.:REP.: ~ Kenneth M. Griffin, P.I~.
EVALUATION OF ITEM; DATE: 4/z0/gz
SEE NEXT PAGE ( FLOODPLAIN MANAGEMENT ORDINACE 487930)
BY
CITY COUNGIL ~
DATE_ ~1~/~,~,,, , \
BUDGET AMT. /v/~ AMT. EST~IATRD
AMT +/- BUDGET FINANCIAL REVIEW BY
COMMENTS:
LEGAL REVIEW BY: REVIEWED BY CM: ~ ,~
AGENDA REQUEST FORM REkqSED L/gl
AGENDA ITEM CO'~"~NUED
Page Z
(FLOODPLAIN MANAGEMENT ORDINANCE)
This proposed variance to the Floodplain Management Ordinance is being requested
by Mr. Steven Brooks of the Grand Lakes of Coppell Partnership. Mr. Brooks is
requesting this variance so that a Floodplain Development Permit can be issued
in order that the final plat for Villages of Coppell Phase III-B can be filed and
the development can commence.
The City's consultant, Mr. Ron Morrison, P.E., has reviewed the Flood Study and
has found it to be in compliance with the City of Coppell Floodplain Ordinance.
Item #8 of Mr. Morrison's approval letter indicates that an additional flood
study run that would contain the ultimate discharge values is still required.
That additional run was submitted to Mr. Morrison and the City of Coppell on
April 16, 1992. It is currently under review by Mr. Morrison. However, that
additional run is not required by FEMA.
The approved study submitted to FEMA has been received and the acknowledgment
letter was written on April 15, 1992 stating that the report is being forwarded
to the technical consultants for review. The letter from Mr. Brooks indicates
that if FEMA requires any minor modifications to the State prior to approval,
those changes will be made.
Previously, in August of 1991, a similar request was granted for the Big Cedar
addition (University Park Project). Staff has no objection to this request
provided the following items are complied with:
1) Any changes requested by FEMA be complied with prior to acceptance
of the project by the City.
2) That the ultimate Flood Study, as required by Item #8 of Mr.
Morrison's letter, be reviewed and accepted by the City prior to
final acceptance of this subdivision.
3) No building permits be issued on lots in the floodplain (Lots 16
through 41, Blk A) until FEMA has approved the Flood Study.
Staff will be available to answer any questions concerning this issue.
10. CoordLnate City floodplain management programs with State, regional and
neighboring community floodplain management progTams.
11. Require Floodplain. Development Permits for all new construction or
development in all floodplain management areas of the City.
~ a. Assure that conditional approvals are received from F£MA before a
Floodplain Development Permit is issued. Upon written
acknowledgment of receipt by FEMA of the required technical data,
construction may commence within a floodplain area provided the
person performing such development furnishes a written agreement to
assume the cost of any modifications noted by FEMA, as a result of
their technical reviews, to be required for proger completion.
b. Require the developer to submit an as-built technical report of
floodplain development conditions as soon as work affecting the
floodplain is completed. Encourage the expeditious submittal of
the as-built conditions in order to obtain the fixlal letters of map
revision from the FEMA.
12. Make submittals to the FEMA in compliance with the provisions of this
ordinance and the provisions of 44 CFR.
13. M~tain and hold open for public inspectim~ all records ~cludiag
maps, elevation certificates of eligibility, elevations and
floodproof~ng, permits issued, variances, appeals, and so on, as
required by or generally pertainizg to the provisions of this
o~ce.
14. Review, approve or deny all applications for development permits
required by adoption of th~s ordinance.
15. Make interpretations as needed to determine the exact location of the
boundaries of floodplain management areas or special flood hazard
&teas.
16. Notify the affected comm,,nities ami the Texas Water Commission prior to
any alteration or relocation of a watercourse, and submit evidence of
such notification to the Federal Emergency Management Agency.
0~--'~1~' ~, 1987 - P~ 23
FLOODPLAIN FJ~0~C;E~2~' OP~tl(APC~
April 14, 1992
Mr. Ken Griffin
City Engineer
City of Coppell Engineering
255 Parkway Boulevard
Coppell, Texas 75019
Dear Mr. Griffin:
Pursuant to our meeting of last week, we understand that in consideration for the city allowing us
to proceed with the development at the Villages of Coppell, Phase 3B, we shall undertake to make
any modification to our plans as required by the review of flood studies by FEMA. We are
providing this letter of undertaking in compliance with the City of Coppell Flood Plain Ordinance.
We greatly appreciate your assistance in this matter and look forward to working with you on this
project.
" Stephen H. Brooks
Grand/Lakes of Coppell Partnership
SB:jeh
Ref.: 0004
8800 N. Central Expressway, Suite 330, Dallas, Texas 75231 (214) 750-6528 Fax (214) 750-6849
Federal Emergency Management Agency
Region VI
Federal Regional Center
800 North Loop 288
NHB Denton, TX 76201-3698
April 15, 1992
Mr. Kenneth Griffin, P.E.
City Engineer - City of Coppell
P. O. Box 478
Coppell, Texas 75019
Dear Mr. Griffin:
This will acknowledge receipt of your request dated April 10, 1~92
for a conditional letter of map revision for Elm Fork Trinity River
and Denton Creek, Villages of Coppell, Phases 3 and 4. We have
forwarded your request to our Technical Consultants for a detailed
review. Upon completion of that review, you will be notified by
them directly.
If you have questions, please call us at (817) 898-5333.
Sincerely,
Vicky A. Clater
Natural Hazards Program Specialist
April 10, 1992
Mr. Jack Quarles, P. E.
Federal Emergency Management Agency
Natural and Technological Hazards Division
Region Six Federal Center
800 N. Loop 288
Denton, Texas 76201
Re: Request for Condition Letter of Map Revision for Elm Fork
Trinity River and Denton Creek, City of Coppell, Villages of
Coppell Phases 3 & 4
Dear Mr. Quarles:
In accordance with the National Flood Insurance Program
Regulations we are submitting the subject report. Our consultant
Morrison Hydrology/Engineering, Inc. of Arlington, Texas has
reviewed this report and based on this review we recommend that
you approve the proposed revision.
Our ordinance requires additional information regarding the
ultimate or fully developed watershed that is not included in
this report. However, it is our understanding that your review
is based on existing conditions so this additional information
should not impact your review.
You may contact the engineer for this project at the address
shown on the report or our consultant Mr. Ron Morrison at
Morrison Hydrology/Engineering, Inc. 520 Avenue H East, Suite
102, Arlington, Texas 76011, telephone (817) 640-4554 for
additional technical information regarding the report. We
request that a copy of all correspondence regarding this project
be sent to the city, Tipton Engineers and Morrison Hydrology
Engineering, Inc.
We appreciate your attention to thi~ matter and look forward to
your reply.
Sincerely,
Kenneth Griffin. P. E.
City Engineer
KG
cc: Don Tipton, Don A. Tipton, Inc.
Morrison Hydrology/Engineering, Inc.
520 Avenue H East · Suite 102 · Arlington, Texas 76011 · Metro (817) 640-4554
March 20, 1992
Mr. Ken Griffin, P. E.
City Engineer
City of Coppell ~ T~ ~ ~ ~'~ ~ '~'
255 Parkway Blvd.
P. O. Box 478
Coppell, Texas 75019
Re: Second review of Elm Fork of Trinity River and Denton Creek,
City of ~Cpunty, Texas Floodplain Reclamation
Study, ~ ~' ~ y Don A. Tipton,
Inc. of'
Dear Mr. Griffin:
This is the second review of the subject study for compliance
with City of Coppell Ordinance 87390. The following Gomments from
our first review are addressed below:
1. There was an increase in the ultimate condition water
surface elevation in Denton Creek in the first report
which is not allowed according to the city ordinance. The
latest submittal addresses this problem by demonstrating no
increase in ultimate conditions.
/~We noted that the entries in the Denton Creek FIS "Q" -100
~ez'°'"'~ I ~Summary Table are not correct. This appears to be a
<misprint. The actual values meet ordinance requirements.
· /There were also some misprints in the ultimate "Q" -100
~ ,summary table but the model results meet ordinance
Vrequirements.
2. Our earlier review requested that the floodway be located on
the development map to verify that the project is outside of
the floodway. This has been accomplished.
3. Our first review requested that the correct floodplain
should be shown on the proposed condition maps. This has
been accomplished.
4. Our first review noted that a Corps 404 permit was not
Page -2-
Mr. Griffin
provided. This latest submittal has included a Corps 404
determination and sufficiently addressed our concerns.
5. Our initial review noted that not all of the FEMA
requirements had been addressed in the initial submittal.
This has been accomplished.
6. The toe of fill in the original submittal extended past the
property line. This has been corrected by adding a
retaining wall at the property line.
7. Our initial review noted that gabian erosion protection work
is being completed as part of the project but was not
included in the computer model. This has now been corrected.
8. The report provided Elm Fork Models with ultimate "Q".
These models showed no increase in flood levels which meets
ordinance requirements. ~mere~is & ~le~'Wi~h the~e~s
e~,m~m~¥~euAi&ti~/.G~i~iua~ Before recommending final
approval the report will require another model showing
ultimate discharge. This ultimate discharge model is not
required by FEMA. Therefore, we recommend submittal of the
information contained in this report to FEMA while the
additional information is being prepared.
We are available to discuss this second review if needed. Please
call us.
Sincerely,
~IORRISON HYDROLOgY/ENGINEERING, INC.
Rona!d W. Morrison, P. E.
Senior Hydrologist
B. Councilman Morton moved to approve Item 11B as submitted in
the amount of $151,056.75 to MDS Computers. Councilman Weaver
seconded the motion. The motion carried 7-0 with Mayor Pro
Tem Smothermon and Councilman Weaver, Thomas, Morton, Cowman,
Robertson and Nelson.
C. Consideration of approval of an award for RFP #54
for LAN Wiring to GTE in the amount of $88,692.00.
C. Councilman Robertson moved to approve Item llC as submitted in
the amount of $88,692.00 to GTE. Councilman Nelson seconded
the motion. Councilman Cowman excused himself from this item
due to conflict of interest. The motion carried 6-0 with
Mayor Pro Tem Smothermon and Councilmen Weaver, Thomas,
Morton, Robertson and Nelson voting in favor of the motion.
Councilman Cowman rejoined Council after this item was voted on.
Item 12: Consider approval of a Resolution to enter into an
Interlocal Agreement with the State of Texas for
participation in the State of Texas Purchasing Program
and authorizing the Mayor to sign.
Mayor Pro Tem Smothermon moved to approve Resolution 042892.1 to
enter into an Interlocal Agreement with the State of Texas for
participation in the State of Texas Purchasing Program and
authorizing the Mayor to sign. Councilman Robertson seconded the
motion; motion carried 7-0 with Mayor Pro Tem Smothermon and
Councilman Weaver, Thomas, Morton, Robertson and Nelson voting in
favor of the motion.
Item 13: Consideration of approving a resolution supporting the
creation of a regional trauma system and authorizing the
Mayor to sign.
Mayor Pro Tem Smothermon moved to approve Resolution 042892.2
creating a regional trauma system. Councilman Nelson seconded the
motion; motion carried 7-0 with Mayor Pro Tem Smothermon and
Councilman Weaver, Thomas, Morton, Cowman, Robertson and Nelson
voting in favor of the motion.
Item 14: Consideration of approving a variance to the Floodplain
Management Ordinance #87930, Article 4, Section B, Item
#11 (A), which states that the Floodplain Administration
must "assure that conditional approvals are received from
FEMA before a Floodplain Development Permit is issued
"for the proposed Villages of Coppell Phase III-B along
the Elm Fork Trinity River and Denton Creek.
City Engineer Ken Griffin made the presentation to the Council and
stated Staff has no objection to the request provided the following
three items are complied with:
1) Any changes requested by FEMA be complied with prior to
acceptance of the project by the City.
2) That the ultimate Flood Study, as required by Item #8 of
Mr. Morrison's letter, be reviewed and accepted by the
City prior to final acceptance of this subdivision.
3) No building permits be issued on lots in the floodplain
(Lots 16 through 41, Blk A) until FEMA has approved the
Flood Study.
Mayor Pro Tem Smothermonmoved to approve the variance as submitted
plus the three stipulations City Engineer Ken Grill
Councilman l~orton seconded the
Mayor Pro Te~ Smothermon~and