Floodplain Mapping for Dbq Ind. Ctr West Consultant
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MEMORANDUM
October 27, 2005
TO:
The Honorable Mayor and City Council Members
FROM:
Michael C. Van Milligen, City Manager
SUBJECT: IIW Proposal for Professional Services
Floodplain Mapping for Dubuque Industrial Center West
Sections of the Middle Fork of Catfish Creek running through the Dubuque Industrial
Center West were altered during the grading of the industrial park. All of the work was
approved by the Corps of Engineers and the Iowa Department of Natural Resources at
the time. The project changed the floodplain boundaries for this section of the creek,
creating development sites that were graded above, or outside, of the floodplain.
Economic Development Director David Heiar recommends City Council approval to hire
IIW Engineers & Surveyors to provide floodplain mapping services for property in the
Dubuque Industrial Center West for a fee of $15,600, which would also include $2,500
in optional services to size the replacement culvert under Seippel Road.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
/J11j G[v,jf{JL
Mic'hael C. Van Milligen
MCVM/jh
Attachment
cc: Barry Lindahl, Corporation Counsel
Cindy Steinhauser, Assistant City Manager
David Heiar, Economic Development Director
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CITY OF DUBUQUE, IOWA
MEMORANDUM
October 27,2005
FROM:
Michael Van Milligen, City Manager
David Heiar, Economic Development Director'!J Ml.
IIW Proposal for Professional Services ([ I
Floodplain Mapping for Dubuque Industrial Center West
TO:
SUBJECT:
Introduction
The purpose of this memorandum is to request City Council approval to hire IIW
Engineers & Surveyors to perform floodplain mapping services for property in the
Dubuque Industrial Center West (DICW). The proposal for professional services is
attached to this memo.
Background
Sections of the Middle Fork of Catfish Creek running through the DICW were altered
during the grading of the industrial park. All of the work was approved by the Corps of
Engineers and the Iowa Department of Natural Resources at the time. The project
changed the floodplain boundaries for this section of the creek, creating development
sites that were graded above, or outside, of the floodplain.
The official Flood Insurance Study (FIS) map, last updated in 1983, still identifies
portions of the newly developed DICW lots as being located in the floodplain. For
mortgage and property insurance purposes, it is important that 'for sale' land in the
DICW be identified on the FIS map as being outside of the floodplain boundaries. This
issue came to the City's attention in the sale of land for the Tri-State Industries'
relocation.
Discussion
Buesing and Associates, the City's engineer for the public improvements associated
with the Tri-States project, consulted with IIW on the floodplain issue. As a result, IIW
has presented a proposal to the City to revise the floodplain map to reflect current
conditions in the DICW through a Letter of Map Revision process submitted to the
Federal Emergency Management Agency (FEMA).
The proposal involves hydraulically analyzing the as-constructed location of the
floodplain and floodway north of the Bergfeld Pond to Seippel Road. IIW would prepare
all permit submissions and map revision requests for Iowa DNR and FEMA review and
approval.
The fee for the above described work is $13,100. For an additional lump sum fee of
$2,500, the proposed analysis could use the hydrologic and hydraulic modeling to size
a replacement culvert under Seippel Road that will need to be replaced in the future.
Performing the analysis at this time would be cost effective and also establish a
construction budget for the project.
There are sufficient funds in the DICW's construction CIP to cover these engineering
fees.
Recommendation
I recommend that the City Council hire IIW Engineers & Surveyors to provide the
floodplain mapping services. I would also suggest, based on the City Engineering
Department's recommendation, that IIW provide the optional services to size the
replacement culvert under Seippel Road (Optional Services - Item C1) for a total of
$15,600.
Action Step
The action step is for the City Council to adopt the attached resolution authorizing the
City Manager to execute the proposal for professional services.
attachments
Prepared by: Pamela Myhre, Economic Development Planner
F:IUSERSIPmyhreIWPDOCSIIIWCONTRACTfortloodplain.doc
RESOLUTION NO. 497-05
RESOLUTION APPROVING PROPOSAL FOR PROFESSIONAL SERVICES WITH
IIW ENGINEERS & SURVEYORS FOR FLOODPLAIN MAPPING IN THE DUBUQUE
INDUSTRIAL CENTER WEST.
Whereas, the City of Dubuque, Iowa has identified the need to revise the official
Flood Insurance Study map for portions of the Dubuque Industrial Center West; and
Whereas, IIW Engineers & Surveyors has provided a proposal to complete the
necessary analysis and mapping work.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY
OF DUBUQUE, IOWA:
Section 1. That a proposal from IIW Engineers & Surveyors for professional
services is hereby approved.
Section 2. That the City Manager is hereby authorized to execute, on behalf of
the City Council of the City of Dubuque, Iowa, a contract with IIW Engineers &
Surveyors for consultant services not to exceed $15,600.
Passed, approved and adopted this 7th day of November 2005.
Terrance M. Duggan
Mayor
Attest:
Jeanne F. Schneider, City Clerk
Jeanne F. Schneider
City Clerk
F:IUSERSIPmyhreIWPDOCSUIWCONTRACTforfioodplainres.doc
I ...... n._
Pam Myhre
Economic Development
City Hall
Dubuque, Iowa 52001
Re: Proposal for Professional Services
Floodplain Mapping for Dubuque Industrial Center West
IIW Project No: 05006-02 (proposal)
Dear Ms. Myhre:
IIW Engineers & Surveyors, P .C. appreciates the opportunity to submit this Proposal for
professional services for the above referenced Project. The delay in our response is due to
availability of IIW personnel and especially DNR personnel. We have contacted the DNR
twice to obtain an opinion on various aspects of this analysis to determine the extent of
DNR review and concurrence, and we still have not received a good indication of what may
be involved with DNR approval. The following Scope of Services is based on our
experience in the past with the DNR and what we anticipate they will require. We have
divided this Proposal into the following sections to fully describe our Proposal relating to
this Project:
PROJRCT DRSCRIPTION
The Middle Fork of Catfish Creek runs through the 1st Addition of the Dubuque Industrial
Center West. The Industrial Park grading has changed the location of the floodplain as
mapped for the Dubuque County Flood Insurance Study (FIS) in 1983. The FlS lists the
floodplain in this area a Zone A, which is not a detailed study area. With the present
development of the industrial park, several properties could be identified as located in the
floodplain and may be required to have flood insurance purchased as a condition of
development funding.
This projcct would hydraulically analyze the as-constructed location of the floodplain and
floodway in order to identifY those sites that can be removed from the floodway by means
of a Letter of Map Revision elevated by Fill (LOMR-F) for individual sites or multiple sites,
depending on which is desired. At this time, an overall Map Revision is not anticipated
because this is a Zone A reach and a revised detailed study is not required. A Map Revision
also requires an extended review time and a $6000 review fee.
The FEMA request for a LOMR-F will be made on FEMA using MT-I, a series of forms
that contains the basic data for FEMA review, including the Property Information Form
(Form I), Elevation Form (Form 2), and Community Acknowledgement Form (Form 3).
Individual lots require a FEMA review fee of $425 and multiple lots a review fee of $800.
SCOPE OF SERVICES
The following list of services will be provided by or under the direct personal supervision of
a Professional Engineer licensed to practice in the State ofIowa.
A. Preliminary Study
1. Map the related drainage areas and stream reaches from information in our office
for the related contributing areas.
IIW Englnecrs
Dubuque. IA
& Surveyors, P.C.
Hazel Green. WI
.
INTEGRITY. EXPERTISE. SOLUTIONS.
II"
Dennis F. Waugh. PE/SE
Charles A. CalC, PE
Gary D. Sejkora, PE
Michael A. Jansen. PE/SE
Ronald A. Balmer, PElSP
John M. Tranmer, PLS
Timothy J. TmneI. PE
John F. Wand snider, PE
Julie P. Ncebel, PE
James P. Kaune. PE
Thomas J. Oster, PLS
Wray A. Childers, PI~,)
Gcoffry T. Rlandin, PE
Mark C. Jobgcn, PE
*l.icCl'l'\ed An:hifC(:llL. WI. MN. SD
Civil Engineering
Structural Engineering
Environmental Engineering
Municipal Engineering
Transponalion Engineering
Architectural Engineering
Land Surveying
Quality Control Testing
Geotechnical Engineering
4155 Pennsylvania Avenue
Dubuque. Iowa 52002-2628
-",,<_"<;:fi14f>4
56:1.556.7811 fax
www.iiwengr.com
mew Floodplain Mapping
August 22, 2005
Page 2 of5
2. Use detailed survey information available from previous projects and currcnt construction underway
designed by Buesing & Associates.
3. Perform hydrologic analysis to quantifY flow from the identified drainage areas. Obtain concurrence
from the Iowa DNR for the hydrologic analysis.
4. Perform relevant hydraulic analysis of the Bergfeld Pond to identify existing retention capacity and
regulatory flood elevations for the pond control structures. Review of the previously provided design
information from KMA indicates this necessary data was not determined. Our analysis will also
provide the necessary beginning conditions for hydraulic analysis of the Chavenelle Drive culvert.
This analysis will likely use US Army Corps of Engineers software program HEC-HMS and will be
calibrated with Iowa USGS flood prediction methods.
5. Develop HEC-RAS computer model of the Middle Fork Catfish Creek between ChaveneIle Drive and
Sieppel Road. This analysis will determine the detailed water smface profile for 10-, 50-, 100- and
SOD-year flood events. Iowa DNR concurrence with the computer model will be made.
6. Meet with City Staff to present analysis and obtain approval for submission of permits.
B. Final Plan Development
1. Prepare plan and supplementary data for Iowa DNR review. The plan and data is intended to be
submitted to FEMA for site(s) as the need arises for this information. Alternatively, a LOMR-F could
be submitted for each individual site or multiple sites at this time to obtain a LOMR-F and officially set
the flood elevations for each site. Future construction would require all structures to be built above the
Base Flood Elevation (BFE) established elevation. This floodplain mapping and information would be
limited to DICW sites east ofSieppel Road and west of Bergfeld Pond.
2. Submit information and MT -I forms to FEMA with request for Letter of Map Revision.
C. Optional Analysis
I. Since the hydrologic and hydraulic modeling would be all set up, additional analysis to size the
replacement culvert under Seippel Road could easily be made. A preliminary plan to establish the
culvert length and orientation would be necessary to conform with the existing urban street cross-
section south of the culvert location. Replacement of this culvert will require a DNR permit which will
require submission of this analysis at the time the permit is requested. Performing the analysis at this
time will also establish a construction budgct for the culvert replacement project.
2. Floodplain mapping west of Seippel Road. This data would provide information for future
development and possible LOMA or LOMR data for individual sites along this reach of the Middle
Fork Catfish Creek. This analysis would require survey data and proposed plans from Buesing and
Associates.
EXCLUSIONS FROM PROFESSIONAL SERVICES
The following is a list of services we are capable of providing, but have not included in this Proposal. We would
be more than willing to perform any or all of the services under a separate Proposal.
1. Field survey. The necessary survey data appears to be available in the various projects that TIW and
Buesing and Associates have conducted in the area and the data available from the KMA construction
plans for the mcw 1st Addition.
2. Subsutface investigations.
3. Analysis of Seippel Road replacement culvert, floodplain west of Seippel Road or east of Bergfeld
Pond.
mcw Floodplain Mapping
August 22, 2005
Page 3 of5
COMPENSATION
Our fee for the above scope of services would be billed according to the following schedule (as referenced to the
above scope of services):
I. Preliminary Study - Items AI through A6, Hourly Rate, Estimated maximum fee of $4,950.00.
2. Final Plan Development - Item BI, Estimated maximum fcc of $6,350.00.
3. LOMR-F submittals - Item B2, Estimated fee of $600.00 to $1,000.00 for each initial LOMR-F
submittal depending on individual or multiple lot submittals. Responding to FEMA requests for
additional intormation will be in addition to the initial submittal fee. These fees do not include the
FEMA review fees.
Optional Services - Item C 1, Lump Sum fee of $2,500.00 including a project cost estimate.
Optional Services - Item C2, Hourly Rate depending of the level of detail desired. Estimated to range
$2,500 to $4,500 for basic mapping depending on extent of coverage.
4.
~.
DELlVERABLES
The following items will be delivered to the City as the result of this Project:
I. Hydrologic/hydraulic report of analysis
2. Overall map of floodplain with water surface elevations and floodway delineated.
3. htdividual Letters of Map Revision based on Fill (LOMR-F) as requested.
GENERAL TERMS AND CONDITIONS
General Terms and Conditions are a part of this Proposal. This Proposal is valid for 30 days from the date of this
letter. If the services and fees defined in this Proposal are acceptable, please return one signed copy to our office.
Thank you for allowing IIW Engineers & Surveyors, P.C. to submit this Proposal for engineering services.
Sincerely,
:e:~:rVEYO~PX.
Dennis F. Waugh, P.E.
Vice President
If the terms of this proposal are acceptable, please sign below and return one copy to our office. Thank you.
htitial_ for acceptance of Optional Item CI
lR-itial ref' Qra99ftaRsa sf 0pU9Ra1 It~ C2 .
Authorized Signature
Date