Title
Force Main Crossing at NW 34th Street by Horizontal Directional Drilling (B)
Explanation
An existing 18-inch iron pipe force main that crosses under NW 16th Avenue developed a leak which W/WW Engineering determined to be caused by corrosion of the pipeline crown by sewer gases. GRU WW Collection Crews effected temporary repairs to the pipeline, but it was also determined that approximately 300 additional feet of the existing 18-inch iron pipe requires replacement due to the corrosive action of sewer gases. This project provides for constructing approximately 300 feet of new 18-inch diameter high density polyethylene (HDPE) pipe to replace the corroded section of iron pipe. In order to minimize disruption of traffic flow at the project site, the new force main segment will be installed under NW 16th Avenue using horizontal directional drilling methods. GRU has applied for the required Florida Department of Transportation and Florida Department of Environmental Protection construction permits.
Written price quotations were obtained from the two known horizontal directional bore contractors that have successfully performed work for GRU. The lowest quotation was submitted by Peters Utilities, LLC. The recommended approval amount includes contingency funds in the amount of $11,000 for the possibility of unknown underground conditions that may adversely impact construction progress and impact other aspects of the project cost. A tabulation of the quotations is attached for your reference.
Recommendations
The City Commission approve the issuance of a purchase order to Peters Utilities, LLC. for construction of an 18-inch force main crossing under NW 16th Avenue along NW 34th Street in an amount not to exceed $45,000.
Fiscal Note
Funding for this work is in the FY 2004 - 2005 Water/Wastewater Systems budget.
Drafter
Prepared by: David M. Richardson, AGM Water/Wastewater Systems
Submitted by: Michael L. Kurtz, General Manager