Pecos Road Sulfide Station
Project Number 01-685-001
The City of Mesa has awarded this project to
Blucor Contracting Inc.
All contract work is complete.
Construction on this project began at the end of April 2012 and
is scheduled to be completed by the mid of December 2012.
The existing Pecos Road Sulfide
Control Station (SCS) was installed in 1991. This station was
designed to inject ferrous chloride into a wastewater lift
station located on the same site. In 2005, an 18” sewer was
installed in Ellsworth and Pecos Roads to convey the wastewater
flow previously pumped to a gravity sewer line located
approximately seven miles away. At that time, the SCS was
modified to discharge to the new Pecos Road sewer to help
control odors in that line. The SCS remained in service until
2009, when it reached the end of its service life. In 2009, an
Odor Control Master Plan prepared for the Utility Department
identified odor sources along this line to still be problematic
and required an upgrade of the system.
The existing SCS facility was
designed to control odors in the original lift station wet well
only and was not sized to provide additional odor control in the
Power Road and Germann Road sewers. In addition, the
existing equipment is 20 years old and requires complete
replacement. This project will demolish the original lift
station and sulfide control station and replace the SCS with an
upgraded facility that is specifically designed to meet the
needs of the existing wastewater flows in the downstream
collection system and that meets current City design standards.
The recommended total award amount
for this project is $1,018,083.00, based on the lowest bid of
$925,530.00 plus an additional $92,553.00 (10% allowance for
change orders). Funding is available in the FY 11/12 Wastewater
Capital Bond Program.