When a structural failure at the Demopolis Lock and Dam in Alabama brought barge traffic to a halt on the Tennessee-Tombigbee Waterway, the US Army Corps of Engineers (USACE), R&D Maintenance, and J.F. Brennan Company (Brennan) joined forces to deliver a fast, high-stakes solution. The breach—described by Colonel Jeremy Chapman of USACE as “a hole the size of a school bus”—stopped commercial navigation across two major waterways and threatened economic losses in the millions each month.

Refinery Wastewater Pond Cleanup with Remote Dredging

We recently completed the cleanup of two wastewater ponds for a large producer of transportation fuels. Using a remotely controlled dredge, Brennan removed wastewater sludge from impoundments on the refinery site and dewatered the material with six 2-meter belt filter presses. The remotely controlled dredge added a layer of safety to the project, preventing any health risks that a Leverman might face if exposed to hydrogen sulfide gas released during the dredging process.

Milestone Achievement in Quality, Environmental, and Safety Standards

We are proud to announce that our corporate offices in North Kingstown, RI, and Ottawa, IL, have been officially certified under ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health and Safety Management) Systems standards. This certification extension ensures that our customers nationwide will continue to experience the same exceptional service, quality, and craftsmanship synonymous with Brennan. It also marks a significant step forward in our growth into submarine cable, offshore wind, and renewable energy projects along the coast.

The Third Ward Milwaukee River remediation project is a pivotal step in cleaning up the Milwaukee River. It targets the site of a decommissioned manufactured gas plant that once operated in the area. 

A Collaborative Effort to Clean Milwaukee's River

Brennan was selected as the prime contractor for this ambitious project, tasked with dredging contaminated sediments and treating water to restore the river's health. Working closely with GEI Consultants, Inc. (GEI), the project’s design engineers, Brennan is delivering comprehensive solutions that combine environmental restoration, water treatment, and marine construction expertise.

J.F. Brennan Company (Brennan) is proud to announce that it has been recertified as a Certified™ by Great Place To Work® for the eighth consecutive year. 89% of employees affirm the company as a great workplace, a 2% increase from last year’s 87%, underscoring Brennan's commitment to fostering a positive workplace culture.

Over 80% of Brennan employees participated in the Great Place to Work third-party survey, providing valuable feedback highlighting the company’s ongoing dedication to its team. The survey revealed strong results across several key areas, including justice, corporate image, and camaraderie, which have been central to Brennan’s success.

TAMPA, FL (June 26, 2024) — The Western Dredging Association (WEDA) has honored J.F. Brennan Company (Brennan) and GEI Consultants with a 2024 Safety Excellence Award for their work on the Third Ward Milwaukee River remediation project. GEI and Brennan accepted the award at WEDA’s Annual Dredging Summit and Expo in Tampa, Florida.

WEDA’s Safety Excellence Award recognizes individual organizations or project teams for exceptional safety performance and for exhibiting a proactive approach to raising safety awareness in the dredging workplace.

Nuclear diving demands unwavering safety measures. Every action, from meticulous planning to employing advanced technology, prioritizes the divers' well-being. While water offers a natural shield against radiation, divers operate in a realm where the invisible poses the greatest threat. Dive deeper with us as we answer questions about the intricacies of nuclear diving, where safety protocols are paramount both in and outside the water.

We were contracted to replace flashboards and perform apron scour repairs at a hydroelectric dam along the Rock River in the Upper Midwest. Our client is a privately owned entity that owns and operates 80+ hydroelectric facilities throughout the United States.

The project’s significant goals involved increasing the dam’s retainage capacity, protecting the existing spillway structure, and providing an aesthetically pleasing spillway for the community's residents. This project was scheduled for the summer months when flow rates are at their lowest, mainly due to the volatility of the Rock River and the need for a slow-moving current to keep our divers safe. 

We're at Minnesota Power's hydroelectric dam in Scanlon, Minnesota, to replace 7 of the structure's Tainter gates. Extending the life of this renewable energy source by 50 to 100 years, the Scanlon Dam Gate Replacement Project enables the further creation of clean, renewable power provided to local communities. 

We were pulled into the project very early on during the design phase of the project. Both Brennan and Minnesota Power attribute the project's success to early contractor involvement.

We are at the Lock and Dam 19 facility in Keokuk, Iowa, operated by the U.S. Army Corps of Engineers (USACE). Our team replaced an 18,000-LB, 105-FT underwater soundbar with wet-mateable connections (cables and speakers that can be connected and disconnected underwater). This underwater acoustic deterrent system (UADS) upgrade allows divers to replace individual speakers if underperforming rather than continuing to remove the entire system.

Why? The U.S. Geological Survey (USGS) is spearheading a 3-year study to reduce the number of invasive carp moving toward the Great Lakes. It is the only study on the Mississippi River evaluating a deterrent for invasive carp.