FLOOD04440

• County: Statewide
• Community: All
• Stream Name: All
• Basin: Statewide
• Title: Colorado Flood Map Modernization Business Case Plan - March 2004
• Date: 3/1/2004
• Prepared For: FEMA
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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SECTION THREE

Program Plan

3.2.2 Study Contractors

As the CWCB does not have an in-house engineering staff solely devoted to floodplain mapping
efforts in Colorado, the use of engineering consultants is essential to make the Floodplain
Mapping Program a success. To support the Floodplain Mapping Program, the CWCB has
secured two engineering consultants to perform flood study updates in Colorado during the first
two federal fiscal years of the Map Modernization Program. Both of the selected engineering
consultants have substantial flood mapping experience on a national level as well as a local
Colorado presence. The consulting contracts will be reviewed and evaluated every two years,
and the DNR Purchasing Division may require re-advertisement and selection of consultants on
that basis. As previously stated, the CWCB intends to assume responsibility for long-term,
periodic maintenance of Colorado DFIRMs. To support this goal the CWCB has selected
engineering consultants that are familiar with all phases of flood map production, including
scoping, preliminary map production, and post-preliminary processing. The tasks for which the
engineering consultants may be responsible on any given project are:

. Project Scoping

. DFIRM database creation

. Base map upgrade for DFIRM that no longer meets FEMA specifications

. DFIRM conversion of manual FIRM

. Redelineation of detailed flood hazards based on new topography and/or new engineering
data

. Topographic data collection (LIDAR or Photograrnmetry)

. Topographic and hydraulic structure data collection (Survey)

. New approximate analysis (Limited Method) and redelineation

. Riverine Study (Hydrology)

. Riverine Study (Hydraulics - Detailed Method)

. Riverine Study (Floodplain delineation)

. Detailed Study (Unique flood hazards)

. Independent QC of topography

. Independent QC of hydrology and hydraulics

. Independent QC of mapping

. Assist with the resolution of appeals, protests, and comments

At present, CWCB believes that contracting with these engineering consultants represents the
most effective means for conducting Map Modernization activities in Colorado. CWCB does not
wish to have any Map Modernization activities in Colorado conducted through IAA or IDIQ
contracting procedures. CWCB strongly urges FEMA to support the utilization of the CTP
mechanism as the only mechanism for contracting of FEMA-funded floodplain studies in
Colorado.

Colorado Business Case Plan - March 2004

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