DR9502-CN 960109(~The City With A Beauliful Fulure
CTT¥
COUNCIL MEETING: January 9, 1996
ITEM CAPTION:
ITEM
SUBMITTED BY:
TITLE:
Approval of a contract with Halff and Associates Inc. for FEMA map revisions for Andrew Brown
Park West, the DeForest Service Center and the existing Fire Station #1 (future Senior Citizens
Center) and authorizing the Mayor to sign.
.qPPROVED
BY
CiTY CO~N/iIL
DATE __ ,/~/~ .
Kenneth M. Griffin P.E.
Assistant City Manager/City Engineer
STAFF COMMENTS:
INITIALS
See attached memo.
STAFF RECOMMENDATION Approval
EXPLANATION:
Denial
Staff recommends approval of the three projects and will be available to answer any questions
at the Council meeting.
BUDGET AMT.$ AMT. EST.$ +/- BUD:$
FINANCIAL COMMENTS:
Funds for this project will need to come from GeneralFund OndesignatedFund
Balance.
FINANCIAL REVIEW~
CITY MANAGER REVIEW:
Agenda Request Form - Revised 1/94 Document Name eng.01
To:
From:
RE:
D ate:
Mayor and City Council
Kenneth M. Griffin, P.E., ACM / City Engineer~
Approval of a contract with Halff and Associates Inc. for FEMA map revisions
for Andrew Brown Park West, the DeForest Service Center and the existing Fire
Station #1 (future Senior Citizens Center) and authorizing the Mayor to sign.
December 29, 1995
This agenda item is brought forth to request Council approval of the referenced FEMA map
revision projects. The three projects are discussed in detail below.
The first project is a map revision required for Andrew Brown Park West because the future
development includes fill dirt, sidewalk improvements, parking lot improvements, etc. that
involve placement of fill into the existing floodplain. Council may recall that several years ago,
as we began the development of Andrew Brown Park East, a similar flood study was performed.
That study was also performed by Halff and Associates, as a subcontractor to Mesa Design
Group. Because they performed the previous study, I have requested that they submit a proposal
on this study also. Halff and Associates is one of the leading hydrology firms in this area.
They are currently working with Dallas County on several FEMA submittals for the construction
of Sandy Lake Road and the bridge over the Elm Fork of the Trinity River. To stay within the
guidelines of our Floodplain Ordinance, this study needs to be performed and submitted to
FEMA for approval prior to the actual work being performed in Andrew Brown Park West.
The second project is the DeForest Road Service Center. While the Service Center might be
elevated above the floodplain, it is still shown to be in the floodplain on the official FEMA map
because there was not a study submitted to FEMA to remove it from the floodplain when it was
constructed.
The third project is the current Fire Station #1 which will be converted to the Senior Citizens
Center. It is located in a designated floodplain area on the official FEMA map. It is my
opinion that this should be evaluated and removed from the floodplain when it is converted to
the Senior Citizens Center. I am unsure of the elevation of the existing structure in regards to
the elevation of the floodplain, but according to our existing FEMA and topographic maps it
should be elevated sufficiently to be out of the floodplain and this should be more of a exercise
in correcting the official maps as opposed to doing a full blown reclamation.
Staff recommends approval of these three projects and will be available to answer any questions
at the Council meeting.
HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS * SURVEYORS
DALLAS · FORT WORTH · HOUSTON · ARLINGTON · Mc. ALLEN ,, CHICAGO
8616 NORTHWEST PLAZA DRIVE · DALLAS, TEXAS 75225
214/739-0094 · FAX 214/739-0095
December 21, 1995
AVO 1008.95.8015
Mr. Kenneth M. ~ P.E.
Assistant City Manager/Director of Public Works
City of Coppell
255 Parkway Blvd.
Coppell, Texas 75019
Re: FEMA Map Revisions
Dear Mr. Griffin:
HalffAssoeiates is pleased to present this fee proposal for FEMA map revisions at Andrew Brown Park
(West), Deforest Service Center, and the proposed Coppell Senior Citizens Center on Coppell Road.
Generally, the services will consist of a Conditional and final Letter of Map Revision application for
Andrew Brown Park, a Letter of Map Amendment for the Coppell Senior Citizens Center, and a Letter
of Map Amendment for the Deforest Road Service Center.
The entire hydraulic engineering, permitting, and surveying effort can be completed for a lump sum fee
of $28,700. A summary of the work plan and fee breakdown is shown on Exhibit A. A suggested
schedule is shown on Exhibit B. Detailed Scopes of Work for the individual map amendment/revision
applications are shown on Exhibits C, D, and E.
Please call if I can answer any questions concerning this proposal or the map revision process. We look
forward to assisting you with this important permitting effort.
Sincerely,
HALFF ASSOCIATES, INC.
/
Walter E. Skipw(th, P.E.
Vice President
TRANSPORTATION · WATER RESOURCES · LAND DEVELOPMENT ** MUNICIPAL · ENVIRONMENTAL · STRUCTURAL
SURVEYING · GLOBAL POSITIONING SYSTEM (G.P.S.) · REMOTE SENSING AND MAPPING
LANDSCAPE ARCHITECTURE ,, PLANNING
Exhibit A
Work Plan and Fee Summary
Andrew Brown Park, Deforest Road Service Center,
and Coppell Senior Citizens Center Map Revisions
Task
Andrew Brown Park
I. Base map Preparations
II. Field Surveys
III. Stream Hydraulics and CLOMR Application
IV. As-Built survey and Final LOMR Application
Subtotal
Fee
$1,070
$1,000
$ 8,230
$ 4,600
$14,900
CoppeH Senior Citizens Center
I. Base Map Preparation.
II. As-built Surveys
III. Stream Hydrology, Hydraulics, and LOMA
Application
Subtotal
Deforest Road Service Center
I. Base Map Preparation.
II. As-built Surveys
III. LOMA Application
Subtotal
$1,200
$1,100
$ 8,500
$10,800
$1,080
$1,100
$ 4100
$1,920
Total
$ 29,800
' T
EXHIBIT B
Suggested Schedule
her January I I=ebruary March I Aprili/2 May I June I July
ID TaskName Duration 1712413~1 7 1~412~ 1281 4 I~ 1~8 251 3 1101~71241311 7 114121 81 5 1121~91261 21g 1161231301 7 114
I Start A Brown Park CLOMR Od "~' I/9 ~ i i i
:
4 Stream HydrsulicalCLOMR Application 15d ~ 1116 ~-. 2/5 :i ii i: i
5 CLOMR Review/Approval 90d i ~}61 .... ::
i : ' 6110
6 Park Construction 9Od iiii ~$i ..... ~ ~
? ,.~,-built Survey/LO~R .~pli~tion for A Brown Park 1~ i !i i i i ! ~/1¶ ?1t -
8 Start Coppell Service Center LOMA Od i i : : : !
""{ ,L
10 "-built Surveys 5d i i !2/12 / 2/16 ! i i i
11 Stream Hydmlogy,Hydraulics,LOMA Application 15d } 1/22'
12 ,O~.ov~./^p,~va~ ~ii; 12/12 ' ./1.
14 Base Map Preparations 5d i
~ t/22 I ~2
15 As-built Surveys 5d !
16 LOMA Application 1Od ' , ~ i
i : 1/29
17 LOMA RevlewApproval 90d ~:i i2/12 .... 6/14
Task ~ Summary ~ Rolled Up Progress
Project: Coppell Map Revisions
Data: 12/21/95 Progress Rolled Up Task
Milestone ~, Rolled Up Milestone ~
Page 1
Exhibit C
Scope of Work
City of Coppell
Andrew Brown Park - West
Letters of Map Revision
December 1995
I. Basemap Preparation
A. Obtain proposed park improvements site plan from Mesa Design Group.
B. Plot topography at A. Brown Park West.
C Transfer Architects site plan to base map, show benchmarks on plan, add legend, notes, north
arrow, sc.~le etc.
D. Create a location map for the application.
H. Preconstruction Surveys.
A. Site Reconnassance.
B. Locate and use nearest FEMA Reference Mark.
C. Survey spot elevations in vicinity of proposed improvements at Park.
D. Process field data and check for accuracy and closure.
E. Plot survey information.
Conditional Letter of Map Revision (CLOMR) application, to the Federal Emergency
Management Agency_ .ITEMA).
A. Flood Insurance Study Hydraulics.
1. Contact FEMA Project Library to obtain current FIS effective models.
2. Locate, execute and debug, duplicate effective FIS model, plot cross-sections and profile.
3. Compare results to current FEMA FIS effective model, update as needed.
4. Build pre-project condition model to fit improvements and include recent LOMR'S
5. Execute and debug pre-project model, plot cross-sections and profile.
6. Compare to FEMA duplicate effective (base) model, constant summary tables.
7. Locate current effective FIS Floodway model.
8. Modify Floodway model consistent with pre-project conditions model.
9. Execute and debug Floodway model, comet summary table.
10. Build CLOMR hydraulic model based on proposed changes in Park.
11. Execute and debug model, plot proposed cross-sections and profile.
12. Compare to pre-project model, prepare summary tables.
13. Modify Floodway model to reflect proposed project..
Halff Associates, Inc. 1 1008.95.8015
Exhibit C
Scope of Work
14. Execute and debug model, prepare summary table.
15. Create hard copy and digital copy of effective, pre-project and proposed project hydraulic
models.
B. Complete FEMA CLOMR forms (MT-2) and attachments.
1. Form 1 - Revision Requester and Community Official Form.
2. Form 2 - Professional Engineer Certification Form.
3. Form 4 - Riverine Hydraulic Analysis Form.
4. Form 5 - RiverineJcoastal Mapping Form
Prepare Miscellaneous tables.
1. Water surface elevation check table for CLOMR.
2. Water survaee elevation and velocity comparison table for FIS discharges.
D. Project site plan.
1. Edit site plan exhibit to include proposed flood plain, floodway, benchmarks, etc.
2. Plot site plan exhibit for application.
E. Revise Flood Insurance Rate Man .(FIRM). Community-Panel No. 48017 0010 E
1. Locate panel.
2. Delineate and digitize FIS FIRM map centedine, flood plain, floodway.
3. Merge FIS information with site plan exhibit.
4. Overlay proposed project delineation at FIS FIRM map scale, for modified FIRM Exhibit.
F, Other exhibits.
1. Compare pre-project with proposed project FIS model cross sections
2. Geotechnical or soils report excerpts by others.
3. Profile plot comparing pre-project with proposed project conditions.
HalffAssociates, Inc. 2 1008.95.8015
Exhibit C
Scope of Work
G. Report Writing
1. Letter of transmittal.
2. Table of contents, figures, addenda, and list of tables.
3. Project description.
4. Compile photographs for report..
H. Assemble CLOMR annlication
1. Generate report,edit as needed.
2. Review, sign and seal report and plans.
3. Copy report and exhibits 5 times.
4. Assemble and bind 5 copies of report.
I. CLOMR Submittal
1. Meet with the City for review and signatures
2. Submit to FEMA Headquarters via overnight mail. The Initial Review Fee ($560) is not
included in the budget. Additional review and mapping fees will be required but mounts are
unknown at this time. These additional fees are not a part of this budget.
3. Mall copies to FEMA Region VI office.
J. CLOMR Review and Coordination
1. Publish public notice of flood plain change in the official local newspaper.
2. Coordination with FEMA during review stage.
IV. Final letter of Map Revision (LOMR) Application to FEMA. (Scope and Budge1~
assume Project is built as planned and revisions to CLOMR hydraulics are not needed.
A. As built surveys.
B. Update Site Map with As-built survey information.
C. Complete LOMR Forms (MT-2) and attachments.
1. Form 1 - Revision Requester and Community Official Form.
2. Form 2 - Professional Engineer Certification Form.
3. Form 4 - Rivefine Hydraulic Analysis Form.
4. Form 5 - Riverine/coastal Mapping Form.
D. Assemble LOMR ~pplicatio~a.
HalffAssoeiatcs, Inc. 3 1008.95.8015
Exhibit C
Scope of Work
E. LOMR Submittal to FEMA Headouarters.
F. LOMR review and coordination.
V. Items to be Provided by City_. as Necessary_ and When Available.
· City topographic mapping electronic files.
· Review and Application fees, if any.
· Plats
· Site plans
· Deeds
· Compaction test results.
· Geotechnieal studies.
VI. Tasks Not Included in Scope.
404 (Wetlands) permit applications.
Other special enviromental studies.
Drainage or flood control design services.
Preparation of Construction Documents.
Boundary surveys.
HalffAssociates, Inc.
1008.95.8015
Exhibit D
Scope of Work
City of Coppell
Coppell Senior Citizens Center
Letter of Map Amendment Application
December 1995
I. Bnsemnp Preparation
A. Obtain proposed site plan.
B. Plot topo at proposed Coppell Senior Citizens Center.
C. Transfer site plan to base map, show benchmarks on plan, add legend, notes, north arrow, scale
etc.
D. Create a location map for the application.
H. As-Butt Surveys.
A. Site Reconnassance.
B. Locate and use nearest FEMA Reference Mark.
C. Survey first floor elevations and spot elevations in vicinity of Center.
D. Process field data and check for accuracy and closure.
E. Plot survey information.
Lc_ti_er of Map Amendment LOMA application, to the Federal Emergency Management
,Agency (FEMA).
A. Flood Insurance Study Hydraulics and Hydrology.
1. Contact FEMA Project Library to obtain currem FIS effective models.
2. Obtain LOMR information for recent nearby nearby projects from consultants.
3. Locate, execute and debug, Stream G-1 hydraulics model, plot cross-sections and profile.
4. Compare results to current FEMA FIS effective model, update as needed.
5. Determine FIS discharges at Coppell Road using Coppell Storm Water Mgmt. Study HEC-1
Model.
6. Extend FIS hydraulic model to Coppell Road for revised existing conditions.
7. Execute and debug revised FIS model, plot cross-sections and profile.
8. Locate current effective FIS Floodway model.
9. Modify Floodway model consistent with revised FIS model.
10. Execute and debug Floodway model, consmmt summary table.
HalffAssociates, Inc. 1 1008.95.8015
Exhibit D
Scope of Work
ll.
1.
2.
3.
4.
C.
1.
2.
D.
1.
2.
E.
1.
2.
3.
4.
Create hard copy and digital copy of effective, pre-project and proposed project hydraulic
models.
Comulete FEMA LOMA forms (MT-l) and attachments.
Form 1 - Property information.
Form 2 - Elevation information.
Form 3 - Hydrologic Analysis (MT-2)
Form 4 - Riverine Hydraulic Analysis Form (MT-2).
Pre~are Miscellaneous tables.
Water surface elevation check table for LOMA.
Water survaee elevation and velocity comparison table for FIS discharges.
Project site plan.
Edit site plan exhibit to include corrected flood plain and floodway, benchmarks, etc.
Plot site plan exhibit for application.
Revise Flood Insurance Rate Map .(FIRM). Community-Panel No. 48017 0010 E
Locate panel.
Delineate and digitize HS FIRM map centerline, flood plain, floodway.
Merge FIS information with site plan exhibit.
Overlay delineation's at FIS FIRM map scale, for modified FIRM Exhibit.
F. Other exhibits.
1. Plot cross sections for revised FIS model cross sections.
2. Soils information.
3. Profile plot.
G. Report Writing
1. Letter of transmittal.
2. Table of contents, figures, addenda, and list of tables.
3. Project description.
4. Compile photographs for report.
HalffAssociates, Inc. 2 1008.95.8015
Exhibit D
Scope of Work
H. Assemble LOMA application
1. Generate report,edit as needed.
2. Review, sign and seal report and plans.
3. Copy report and exhibits 5 times.
4. Assemble and bind 5 copies of report.
I. LOMA Submittal
Meet with the City for review and signatures
Submit to FEMA Headquarters via overnight mail. An Initial Review Fee is not included in
the budget and should not be required as long as submittal is for map correction.
Mail copies to FEMA Region VI office.
J. LOMA Review and Coordination
IV. Items to be Provided by Ci _ty. as Necessary_ and When Available.
·
·
·
·
·
·
City Topographic Mapping Electronic Files.
Review and Application fees, if any.
Plats
Site Plans
Deeds
Geotechnical Studies.
V. Tasks Not Included in Scope.
404 (Wetlands) permit applications.
Other special environmental studies.
Preparation of Construction Documents.
Boundary Surveys.
Halff Associates, Inc. 3 1008.95.8015
Exhibit E
Scope of Work
City of CoppeH
Deforest Road Service Center
Letter of Map Amendment Application
December 1995
I. Basema_n Pre_naration
A. Obtain site plan.
B. Obtain electronic files for city topographic maps.
C. Plot topo at Deforest Road Service Center.
D. Transfer site plan to base map, show benchmarks on plan, add legend, notes, north arrow, scale
etc.
H. As-Built Surve_vs.
A. Site Reconnassance.
B. Locate and use nearest FEMA Reference Mark.
C. Survey first floor elevations and spot elevations in vicinity of Center.
D. Process field data and check for accuracy and closure.
E. Plot survey information.
me
HalffAssociates, Inc.
Letter of Map Amendment LOMA applieafion~ to the Federal Emergency_ Management
,agency_ (FEMA).
Obtain LOMR information for recent omiects from consultants.
Complete FEMA LOMA forms fl~4T-1) and atta___chrnents.
Form 1 - Property information.
Form 2 - Elevation information.
Pr~_ are elevation tables.
Project site plan.
Edit site plan exhibit to include corrected flood plain and floodway, benchmarks, etc.
Plot site plan exhibit for application.
I 1008.95.8015
Exhibit E
Scope of Work
1.
2.
3.
F.
1.
2.
3.
4.
G.
1.
2.
3.
4.
H.
Revise Flood Insurance Rate Man ~IRM) Communi _ty-Panel No. 48017 0010 E
Delineate and digitize FIS FIRM map centerline, flood plain, floodway.
Merge FIS information with site plan exhibit.
Overlay delineation's at FIS FIRM map scale, for modified FIRM Exhibit.
Report Writing
Letter of transmit.
Table of contents, figures, addenda, and list of tables.
Project description.
Compile photographs for report.
Assemble LOMA application
Generate report, edit as needed.
Review, sign and seal report and plans.
Copy report and exhibits 5 times.
Assemble and bind 5 copies of report.
LOMA Submittal
2.
3.
I.
Meet with the City for review and signatures
Submit to FEMA Headquarters via overnight mail. An Initial Review Fee is not included in
the budget and should not be required as long as submittal is for map correction.
Mail copies to FEMA Region VI office.
LOMA Review and Coordination
IV. Items to be Provided by City_, as Necessary and When Available,
·
·
·
·
·
City Topographic Mapping Electronic Files.
Review and Application fees, if any.
Plats
Site Plans
Deeds
Geotechnical Studies.
Halff Associates, Inc. 2 1008.95.8015
Exhibit E
Scope of Work
V. Tasks Not Included in Scope.
404 (Wetlands) permit applications.
Other special environmental studies.
Preparation of Construction Documents.
Boundary Surveys.
Haiti'Associates, Inc.
1008.95.8015