Arlington Wastewater Treatment Plant Expansion

The project provided extensive improvements and upgrades to Arlington’s existing treatment facility. Work included relocation of utilities, new electrical, natural gas, and water services, demolition of existing buildings and structures, the placement of 5,000 cubic yards of structural concrete, and an overhaul of the plant’s treatment equipment. The existing plant had to maintain operation throughout construction. IMCO Construction maintained a great working relationship with engineer and the City. The project team was able to critically review the existing construction schedule and make modifications to provide temporary facilities. These changes allowed IMCO to begin construction on portions of the project a year early, saving time and money. IMCO proposed alternate plant process equipment, which maintained the performance requirements of the contract while saving the owner over $500,000. After deducting the cost of wetland enhancements added to the project by the City the final contract price came in below the original contract value through value engineering efforts.

The owner communicated its top priority for the project to keep its plant operational at all times and to minimize the project duration and impact on the plant. IMCO’s preconstruction assessment identified creative ways to keep the plant operational, reschedule the project, and save four months on completions of the project. Meeting the strict milestone completion dates for the MBR completion, the aeration basin, and the substantial completion were critical to success. The construction team coordinated extensive modification, construction, and installation of a $6 million treatment equipment package.

“The work was completed at an operating plant without any system upsets or violations. IMCO’s expertise spanned from system controls, to pumps and motors, to site safety and environmental protection expertise. Most important to our project was the proactive communication IMCO generated with proper document handling and our weekly construction meetings. I am very pleased with IMCO’s performance,” said James Kelly, City of Arlington public works director.