Consent 1.J.
Regular City Council Meeting
- Meeting Date:
- 08/11/2014
- TITLE
- WO 14-01, Schedule 1, Water Main Replacement and Storm Drain Projects, Amendment #3
- PRESENTED BY:
- David Mumford
- Department:
- Public Works
Presentation:
PROBLEM/ISSUE STATEMENT
City Council will consider Amendment No. 3 to Sanderson Stewart's Professional Engineering Services (PES) contract with the City for Schedule 1 of the 2014 Water Main Replacement and Storm Drain Projects. The net result of Amendment No. 3 is an estimated $21,796.18 increase to the contract price to a total of $758,802.18. Since the original contract price is $672,740.00, Amendment No. 3 results in an overall contract price increase of 12.8%.
An investigation into the condition of the existing 18-inch storm drain in Grand Avenue between 17th and 24th Street West led staff to conclude that improvements to that storm drain system are needed. The existing clay tile storm drain has severe infiltration and lost capacity that contributes to flooding in Grand Avenue during storm events. Improving the storm drain between 19th and 21st Street West along with the water main replacement project is the most cost effective approach and ensures that both utility projects are complete before this section of Grand Avenue is overlaid within the next couple of years.
Previous contract amendments of $50,000.00 for the design and engineering portion of this work were approved based on an initial scoping effort; however, design and engineering beyond the initial scope of extra work is required to complete the storm drain design.
An investigation into the condition of the existing 18-inch storm drain in Grand Avenue between 17th and 24th Street West led staff to conclude that improvements to that storm drain system are needed. The existing clay tile storm drain has severe infiltration and lost capacity that contributes to flooding in Grand Avenue during storm events. Improving the storm drain between 19th and 21st Street West along with the water main replacement project is the most cost effective approach and ensures that both utility projects are complete before this section of Grand Avenue is overlaid within the next couple of years.
Previous contract amendments of $50,000.00 for the design and engineering portion of this work were approved based on an initial scoping effort; however, design and engineering beyond the initial scope of extra work is required to complete the storm drain design.
ALTERNATIVES ANALYZED
The Council may:
- Approve Amendment No. 3 to the PES contract for W.O. 14-01, Schedule 1, Water Main Replacement and Storm Drain Projects in the amount of $21,796.18; or
- Do not approve Amendment No. 3. If the amendment is not approved, the City's storm drain system in this area will continue to perform inadequately, and the City's planned overlay of this section of Grand Avenue will need to be delayed or completed without important infrastructure improvements.
FINANCIAL IMPACT
The net result of Amendment No. 3 is an estimated $21,796.18 increase to the contract price to a total of $758,802.18. Since the original contract price is $672,740.00, Amendment No. 3 results in an overall contract price increase of 12.8%.
Funding for the project was budgeted in FY2015 and the source is storm water funds.
Funding for the project was budgeted in FY2015 and the source is storm water funds.
RECOMMENDATION
Staff recommends that Council approve Amendment No. 3 to Sanderson Stewart's PES contract with the City for Schedule 1 of the 2014 Water Main Replacement and Storm Drain Projects in the amount of $21,796.18.