CIVIL ENGINEERING DESIGN
The TAI staff has completed numerous water distribution and sanitary collection systems ranging from transmission mains to small distribution systems and force mains to gravity sewers. Replacement or adding new water mains and sanitary systems requires careful planning in maintaining required separation from other utilities and careful consideration of the condition of other utilities and the roadways above them for replacement.
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RELATED PROJECTS
The Glenbard Wastewater Authority has hired Trotter and Associates, Inc. to move forward from the design phase to resident engineering services for the primary clarifier rehabilitation project. As part of these upgrades, the primary clarifiers, gravity thickeners, solids pumping system, and electrical and control systems will be replaced and upgraded due to aging infrastructure. The Authority has completed a 47 MGD bypass with six suction lift pumps and three overland force mains. This bypass allowed the primary clarifiers to be taken offline, enabling the installation of diversion structure gates that includes three new downward-opening weir gates and two new sluice gates. Over the following months, each clarifier will be taken out of service independently for complete removal and replacement with new stainless-steel mechanisms. The project team included Vissering Construction, Connelly Electric Co., Dahme Mechanical Industries, and Tri-R Systems, Inc. To learn more, follow TAI’s Current Projects at trotter-inc.com , or contact one of our team members.
The Village of Fox Lake and Trotter and Associates, Inc. have recently completed infrastructure improvements along Hillside Court, creating a safer and more dependable corridor for the community. The project involved building a soldier pile wall to replace a failing wall supporting the existing roadway, improving stormwater flow with rip-rap channels and drainage structures, and reconstructing the roadway using full-depth reclamation with concrete. This approach combined technical excellence with cost savings to provide long-term benefits for the community.
The Janak and Weck subdivisions, located in the Village of Algonquin, are older subdivisions within the municipality. The Village is looking to provide residents with long-term sustainable solutions to update its existing aging water and sewer infrastructure. To achieve this goal, the Trotter team is preparing a feasibility study that outlines the best options for improving the infrastructure in these subdivisions. One of the main components will be assessing whether to rehabilitate the existing rear-yard sanitary sewers or to replace the sewers within the right-of-way in front of the properties. Once the study is completed, the Village will have the data needed to make an informed decision that results in the most cost-effective, sustainable infrastructure plan for this area.
Trotter and Associates, Inc. (TAI) continues its partnership with the DuPage County Department of Stormwater Management on the rehabilitation of the West Lobe Pump Station at the Elmhurst Quarry Flood Control Facility. This critical infrastructure serves as a flood control system by storing excess flow during major rain events and later pumping stormwater back to Salt Creek once conditions recede. Independent Mechanical Industries, Inc., and their subcontractors are on schedule for the West Lobe Pump Station to be returned to service this fall. Over the last several months, the team completed installation of four 500-hp pumps and rehabilitation of the discharge piping supports along the 100-foot quarry highwall. Additionally, the pump station’s electrical system was upgraded with a 2,500-amp switchboard and VFDs to provide a long-term reliable electrical system for the facility.