Title
Resolution to Approve Amendment No. 3 to the Professional Services Agreement with CDM Michigan (CDM) ($16,337.00) for Ann Arbor Stormwater Geographic Information System (GIS)Data Collection and Hydraulic Model Development
Memorandum
Your approval is requested to authorize the attached resolution to amend the Professional Services Agreement (PSA) with CDM for additional work needed to complete the georeferencing of the asbuilt drawings and database update and to upgrade the Allen Creek flow meter.
The primary goals of this project are to construct an accurate and complete inventory of the stormwater system for improved efficiency for operations and maintenance and to create the data structure for integrating a stormwater model with GIS and an infrastructure maintenance management system. When complete, the stormwater model will be used to identify storm system quantity and quality issues. Specific tasks include evaluating effects of proposed development, public improvement projects, and potential storm system improvements (i.e. BMPs, new detention facilities).
The Systems Planning Services Unit issued a Request for Proposal (RFP-624) in February 2006 for a consultant to create a spatial inventory of the stormwater system, create a city-wide stormwater model, and generate necessary tools for use of existing storm information. CDM was selected from a pool of eight prospective consultant teams that responded to RFP-624. A selection committee comprised of members of City staff with experience in stormwater issues, engineering, and GIS reviewed all proposals. Following an initial review, three consultant teams were interviewed with regards to their proposals. CDM’s proposal provided the best option for meeting the goals of this project. The selection committee concurred with the proposal for the completeness of scope, the level of effort required accomplishing the specified tasks, and the costs to complete the project.
In early 2007 a project budget of...
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