Title
An Ordinance awarding Bid No. 57831683-C, for the cathodic protection pilot program to Wiedenmann, Inc., in the amount of $203,997.00 and authorizing the City Manager to execute an agreement for the same. (PWC 11/27/18)
Body
Key Issues:
Approximately 16,000 feet of six and eight-inch ductile iron water mains were installed in the Princeton Heights area during the 1990’s.
Due to corrosion of iron pipe, over twenty water main breaks have occurred in the Princeton Heights area since 2009.
To reduce the corrosion of existing water mains and extend the service life of water mains in the Princeton Heights area, 280 high potential magnesium anodes will be installed with this project as part of a cathodic protection pilot program.
Proposed City Council Motion:
FIRST MOTION: I move for a second reading of an Ordinance awarding Bid No. 57831683-C, for the cathodic protection pilot program to Wiedenmann, Inc., in the amount of $203,997.00 and authorizing the City Manager to execute an agreement for the same.
SECOND MOTION: I move for adoption of an Ordinance awarding Bid No. 57831683-C, for the cathodic protection pilot program to Wiedenmann, Inc., in the amount of $203,997.00 and authorizing the City Manager to execute an agreement for the same.
Background:
A Water Research Foundation report published in 2018 “Retrofit and Management of Metallic Pipe with Cathodic Protection” provides information and case studies from water utilities beginning anode retrofit programs to extend the service life of existing water mains. An anode retrofit program is a type of cathodic protection that typically involves welding a wire from a magnesium anode to an existing water main then burying the anode near the water main. The Des Moines Water Works (DMWW) and Louisville Water Company (LWC) saw a reduction in water main breaks after beginning anode retrofit programs in 2004. From 2004 to 2014, DMWW installed anodes on 22 miles of water mains. From 2004 to 2013,...
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