CIVIL ENGINEERING AND DESIGN FOR MUNICIPAL AND PUBLIC PROJECTS
LEARN MORE ABOUT TROTTER
Full service civil engineering firm
Trotter and Associates, Inc. Consulting Engineers is a full service civil engineering firm structured to meet the growing needs of our municipal clients. TAI’s staff has the experience to resolve the complex issues brought on by increased development, a changing regulatory environment and aging infrastructure.
JOIN OUR TEAM
OUR REPUTATION IS BUILT ON PRACTICAL EXPERIENCE. EVERY ENGINEER ON OUR TEAM STARTED IN THE FIELD, AND TO ENSURE THAT OUR DESIGNS WORK IN THE REAL WORLD, OUR TEAM ALWAYS HAS PLENTY OF
BOOTS ON THE GROUND
OUR SERVICES
CURRENT PROJECTS
Construction of the City of Woodstock's 2025 Enhanced Street Program, which improves 8.4 miles of roadway, began last month. These improvements include both resurfacing and reconstruction of local residential/commercial streets, as well as higher traffic volume collector and arterial streets. During the design phase, TAI engineers performed a comprehensive evaluation using pavement cores, PCI ratings, and in-person field assessments to determine the most cost-effective and appropriate improvement for each roadway segment. To maximize value and minimize disruption, cement-stabilized full-depth reclamation (FDR) was selected as the reconstruction method for qualifying streets. FDR recycles the existing aggregate and subgrade materials by blending them with Portland cement and water, creating a strong, stable base ready for paving, without the need to haul in new aggregate. This sustainable approach not only reduces cost and environmental impact but also significantly minimizes disruption to residents. We’re proud to partner with the City of Woodstock in delivering efficient solutions for our municipal clients and their residents.
Trotter and Associates, Inc., along with Manusos General Contracting, Inc., recently completed the Well 7 Radium Improvements Project for the City of Sycamore. This project was guided by the City’s 2019 Water Master Plan, also developed by Trotter, and focused on upgrading radium removal from the municipal water supply. Upgrades included the construction of a new treatment facility equipped with a hydrous manganese oxide (HMO) filtration system. The facility features dedicated rooms for HMO chemical mixing and feed systems, chlorine dosing, and electrical controls. The system was brought online earlier this spring and is now fully operational, significantly improving the City’s water treatment capabilities to continue to provide safe, high-quality drinking water.
Phase I Improvements at the City of Woodstock’s South Wastewater Treatment Plant are progressing on schedule, with the chemical phosphorus removal system expected to come online this fall, marking the first significant milestone of the project. The strong performance of Manusos General Contracting and their team of subcontractors has been key to staying on track. Manusos has led structural concrete work and continues to manage overall construction efforts. RV Builders completed the construction of the ground face masonry block building shell, while Dahme Mechanical Industries installed under-slab plumbing and process piping. Associated Electrical Contractors has completed under-slab electrical work, and Jim Burke Excavating handled earthwork and installation of underground site utilities, including preparation for the new ring road. Upcoming work will focus on the chemical building systems, rehabilitation of the aerobic digesters, and improvements to the oxidation ditch. The project remains on track for final completion in summer 2026. Trotter and Associates, Inc. is proud to support the City of Woodstock with engineering solutions that advance water quality and infrastructure reliability for the community.
The City of Crystal Lake has engaged Trotter and Associates, Inc. (TAI) to undertake a significant rehabilitation project at Wastewater Treatment Plants (WWTP) Nos. 2 and 3. This project aims to enhance the efficiency and effectiveness of the wastewater treatment processes in alignment with the City’s Wastewater Master Plan and recent Phosphorus Removal Studies. The project scope for WWTP2 will involve replacing four raw sewage pumps and the primary clarifier cross collectors, rehabilitating the secondary clarifier, and converting the tertiary filtration process from sand filters to cloth media disc filters. Similarly, the work on WWTP 3 will include rehabilitating both secondary clarifiers and converting the tertiary filtration process. These upgrades are crucial for improving the overall performance of the wastewater treatment facilities and ensuring compliance with environmental regulations. Trotter and Associates, Inc. is currently in the early stages of design, with construction expected to begin in early 2027.
The second phase of improvements to Batavia’s Wastewater Treatment Facility was broken into two sub-phases: Phase 2A Rehabilitation and Phase 2B Expansion. IHC began construction for Phase 2A on September 18 th , 2023, and will continue through 2026. This project includes intensive offsite utility replacement and realignment, bike path realignment, demolition of several large structures within the Facility, replacement of the excess flow facilities, construction of new Headworks including screening, grit removal, and odor control, construction of a new primary clarifier diversion structure, four 68’-diameter primary clarifiers, and a Primary Clarifier Control Building, construction of three new duplex raw sewage pump stations, rehabilitation of the three final clarifiers, construction of a new UV disinfection building, and replacement of the WAS thickening systems.
The Village of Barrington Hills has kicked off its 2025 Road Program, which includes HMA resurfacing along three miles of roadway and patching and striping on five miles of various roadways within the Village. With the initial removal completed, crews have begun placing reflective crack control fabric along the milled roadway. Utilization of this fabric on resurfacing projects reduces reflective cracking from the underlying pavement. It acts as a moisture barrier, all of which assist in extending the service life of the roadway. The final HMA surface placement along Spring Creek Road and Buckley Road, patching of various streets, and striping are expected to be completed in the coming months.
The Village of Algonquin, Trotter and Associates, Inc., and Manusos General Contracting are excited to be moving into the construction phase of the WWTF Biosolids Handling Improvements project. With anticipated long lead times for equipment, the project team is working diligently to process submittals to ensure installation of the two decanter centrifuges can begin in the Spring of 2026 as planned. Upon completion of the project, the Village will have met its goal of upgrading the sludge dewatering operation to maintain processing current demands and allow for future development.
Concrete repairs are vital for preserving the integrity of existing structures and enhancing their service life. This was the main objective for the Structural Repairs Project at Fox River Water Reclamation District’s North and West facilities. To meet this objective, the Trotter structural team evaluated numerous buildings, tanks, and components at both facilities to develop a comprehensive repair plan. Repairs ranged from minor crack injection to full-depth concrete repairs, masonry repairs, and improvements to aluminum stairs and guardrails. Dahme Mechanical Industries (DMI) and its team of subcontractors, Manusos General Contracting, Bulley & Andrews, Alliance Concrete Sawing and Drilling, and A. Horn Inc., are wrapping up the final stages of the project. The remaining scope of work includes regrouting a Final Clarifier and extensive rehabilitation of a concrete structure that dates to the early 1950s. In addition to the structural components of this project, existing stop plates at the West Facility’s Chlorine Contact Tank were replaced with slide gates, improving operational efficiencies for District Staff. The DMI team effectively and efficiently installed all fourteen gates within a week, allowing District Staff to resume maintenance on their facilities in preparation for the disinfection season.
COMPANY NEWS
Trotter and Associates, Inc. is pleased to welcome Jessy Stouffer as an Administrative Assistant, providing vital support to administrative functions and internal coordination across multiple office locations from the corporate office in St. Charles, IL. A graduate of Northern Illinois University, Jessy brings over seven years of experience providing high-level administrative support, coordinating internal and client-facing initiatives, and contributing to the success of executive teams. Already working closely with the TAI team, Jessy brings a professional, responsive approach that aligns with our commitment to excellence. Please join us in welcoming Jessy to the TAI team.
Trotter and Associates, Inc. is honored to support the City of Burlington with engineering solutions that deliver.
Trotter and Associates, Inc. (TAI) is excited to announce that Nicholas Beltran (Nico), a graduate from the University of Dayton with a B.S. in Civil Engineering, has joined the firm as a Staff Engineer. Nico is working out of the St. Charles office. As an undergrad, Nico explored a range of engineering disciplines and ultimately developed a strong passion for water and wastewater infrastructure—an area that aligns closely with TAI’s core expertise. He brings valuable experience from his internships, where he was involved in subcontractor coordination, supported the bidding process for multi-million-dollar projects, contributed to quality control audits, and performed safety audits. Nico approaches his work with enthusiasm, professionalism, and a commitment to learning. His background and motivation make him a great fit for our team and our mission to deliver high-quality engineering solutions for the communities we serve. Please join us in welcoming Nico to TAI!
Trotter and Associates, Inc. is pleased to welcome Tyler Lennon, E.I.T. , as a Staff Engineer in our St. Charles office. Tyler earned his B.S. in Civil Engineering from the University of Dayton and has successfully passed the Fundamentals of Engineering (FE) Exam—an important milestone on the path to becoming a licensed Professional Engineer. He brings two years of civil engineering experience from his work with MSA Professional Services in Rhinelander, WI. During his time there, Tyler conducted construction inspections, coordinated utility tracking for highway reconstruction projects, and supported field survey teams. Tyler’s hands-on field experience, analytical approach, and strong technical foundation are already a great asset to TAI’s growing team. We’re excited to have him on board and look forward to the impact he will have in our firm and our industry! Please join us in welcoming Tyler Lennon to TAI.