Nelosca embarked on a vital restoration project for the middle section of the Lake George Canal. The primary goal was to protect aquatic organisms by separating them from contaminated sediment through a multi-layer sediment cap.

Initial Site Challenges

Hydrographic surveys revealed areas of varying slope and stability as the first layer of cap material was placed over the canal bottom. These issues were attributed to soft underlying sediment within the canal footprint. The success of this project hinged on effective collaboration between Nelosca and the U.S. Army Corps of Engineers (USACE) to address these types of challenges.

TAMPA, FL (June 26, 2024) — The Western Dredging Association (WEDA) has honored Nelosca Technologies (Nelosca) and GEI Consultants with a 2024 Safety Excellence Award for their work on the Third Ward Milwaukee River remediation project. GEI and Nelosca 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.

Nelosca Technologies, Inc. (Nelosca) overcame significant design challenges to complete a dredging project that involved hydraulically pumping slurry over a long distance of 10.4 miles. Nelosca employees designed the dredging system and executed the entire project using Nelosca-owned pipeline and equipment. 

Treatability testing uses bench-scale demonstrations and analysis to determine if a material can be effectively treated with a specific chemical or process. At Nelosca, we use treatability testing to develop sound technical approaches for dredged material dewatering, in situ or dewatered dredged material stabilization, and water treatment. 

Treatability data can be used to price a job more accurately and find cost savings for our clients. Treatability testing allows us to select chemical and mechanical processes for treatment and evaluate less costly alternatives. Here's how we do it.

This year, Nelosca's blog posts garnered an impressive readership of over 27,000. An analysis of our most searched topics identified the most significant issues in the environmental and marine construction industries, including those most relevant to our company's operations. This leads us to the question: What were our industry's most frequently researched topics?

We've examined Nelosca's most popular articles of the year -- let's count them down!

Our equipment safely navigates where barges can’t float and where ground equipment can’t trek. Nelosca’s specialty amphibious trucks can float fully loaded with a 20-cubic yard payload or be configured to support geotechnical drilling equipment. See our equipment in action with this video! 

Island building and habitat restoration have significant environmental benefits, improving aquatic and land-based ecosystems. Working under LS Marine alongside Ramsey County, the U.S. Army Corps of Engineers, Saint Paul District, and the Minnesota Department of Natural Resources, Nelosca built up islands at Pigs Eye Lake in Saint Paul, Minnesota.

The project's master plan features seven islands, sand beaches, marsh habitat, and land plantings. We utilized dredged material from the Mississippi River in an environmentally beneficial way to build the islands. Here's how it happened and why it works!

The US Environmental Protection Agency (EPA) and Minnesota Pollution Control Agency (MPCA) signed a project agreement to remediate contaminated sediment in the “ponds behind Erie Pier,” two ponds surrounded by shallow marsh wetlands in the St. Louis River Area of Concern (AOC).

The sediment was primarily contaminated with PCBs, PAHs, mercury, and chromium. Here's how we worked with stakeholders to clean up the sediment and the resulting impact of our work.

The Cuyahoga Improvement Project in Kent, OH, aims to improve future recreation experiences while protecting existing natural resources. The purpose of our work is to remove areas of petroleum-impacted soft sediments that were deposited decades ago from discontinued industrial practices upstream. 

Background on a Burning River

The Cuyahoga River has quite a history: a transportation route; a boundary; an origin for oil, rubber, and steel industries; a power source; and a dumping ground. The river was once 1 of the most polluted in the country. The Cuyahoga has caught fire at least 13 times since the 1860s.

February 6, 2023 — Specialty marine contractor Nelosca Technologies, Inc. (Nelosca) recently finalized the asset acquisition of the dredging and dewatering division of Infrastructure Alternatives, Inc. (IAI). The purchase brings dewatering, water treatment, and treatability testing services into the organization for the first time.