The New Brighton City Council on May 9 unanimously awarded two contracts for improvements to the city’s water treatment plant.
The project consists of a building addition at Water Treatment Plant 1, which will include the installation of AOP equipment (UV reactors, peroxide vessels, piping, and controls), piping and valve improvements in the existing plant, HVAC and lighting improvements, painting and special coatings repair, external building finishes, landscaping, and fencing modifications.
“This is a milestone in our plan to make adjustments that are necessary to water treatment plant number one,” said New Brighton City Manager Dean Lotter. “Most notably an expansion to the actual main plant itself but the procurement of the technology that will be housed inside of that expansion and be utilized to provide safe water to the public for years to come.”
Trojan Engineering was identified and the best value supplier and awarded a contract in the amount of $2,678,125 as the general contractor. Trojan will oversee the AOP expansion and will install the equipment supplied under this contract.
Because of the complexity of the equipment procured under this contract, the bidding process utilized a best value procurement approach rather than the standard competitive low-bid method. Under best value contracting, factors other than price can be considered for awarding a contract. The city evaluated Trojan’s bid by focusing on the level of expertise, risk assessment, value added and an interview.
Magney Construction, Inc. was identified as the lowest bidder for the building expansion and was awarded a contract in the amount of $10,973,125. Magney Construction has previously done work for the City at Water Treatment Plant One.
These improvements will facilitate long-term solutions for the removal of 1,4-dioxane from New Brighton’s drinking water.
Back in February 2015, the Minnesota Department of Health met with city staff and reveled that the City’s water supply was contaminated with low levels of 1,4-dioxane. Because of the city’s rapid reaction and implementation of an interim response the water supply has been free of 1,4-Dioxane since April 15, 2015 but the upcoming project will provide long-term relief.
For 25 years prior to April 15, 2015 the city’s water supply was provided by six NBCGRS wells and the water from those wells was treated at treatment plant one. Previously, the water has been treated using green sand filters to remove naturally occurring Iron and Manganese and then treated using GAC to remove the known TCAAP contaminates.
“For those 25 years the system effectively removed all of the known TCAAP contaminates to non-detectable concentrations,” said Barr Engineering Vice President Greg Keil.
The long-term solution involves adding an additional treatment process to water treatment plant one. The additional treatment will be an advanced oxidation process that will remove the 1,4-Dioxane. Once complete, the city will be able to restart the NBCGRS well, which was shut down after the 1,4-Dioxane discovery.
The project will be funded through money received as a result of New Brighton’s litigation settlement agreement with the federal government.
The project is expected to complete by November 2018.
Contact Sam Lenhart at [email protected]