Ann Arbor logo
File #: 10-0103    Version: 2 Name: 3/15/10 - CDM Amendment No. 2 - Lime System Improvements
Type: Resolution Status: Passed
File created: 3/15/2010 In control: City Council
On agenda: 3/15/2010 Final action: 3/15/2010
Enactment date: 3/15/2010 Enactment #: R-10-060
Title: Resolution for Approval of Amendment No. 2 to the Professional Services Agreement with CDM Michigan Inc. for the Lime Feed System Improvements Project ($99,580.00)
Title
Resolution for Approval of Amendment No. 2 to the Professional Services Agreement with CDM Michigan Inc. for the Lime Feed System Improvements Project ($99,580.00)
Memorandum
This memorandum and resolution requests approval of Amendment No.2 to the professional services agreement with CDM Michigan Inc. for the Lime Feed Systems improvements Project.

The Lime Feed System Improvements Project is included as a high priority project for 2010 in the City’s approved Capital Budget. This project includes replacing three lime slakers and modifying the associated lime storage bins at the Water Treatment Plant (WTP). The existing lime slakers are in poor condition and were identified during the WTP Facilities Master Plan - 2006 as one of the highest priority capital improvements. The lime slakers are some of the most critical pieces of equipment at the WTP. Without operating slakers, the treatment process is ineffective and the WTP would not be able to meet state drinking water standards. A second critical component to this project is to address safety concerns associated with the existing lime bins. The WTP has experienced several lime slides of varying degrees over the past 5 years that have caused minor injury to staff and damaged lime slaking and other equipment in the vicinity. Modifications to the bins will eliminate the occurrence of these events.

Council approved a consulting services agreement for $523,163.00 and contingency in the amount of $50,000.00 in December 2007 as part of Resolution No. R-07-606 to complete this work. In February 2009, Amendment No. 1 for a value of $49,439.00 was approved by the City Administrator. Amendment No. 1 included scope for materials testing as well as design modifications. Amendment No. 1 exhausted the contingency approved by Council as part of Resolution No. R-07-606.

Amendment No. 2 to the professional services agreement with CDM Michigan Inc. for a total of $99,580.00 reflects the additional consulting ser...

Click here for full text