80 years old and 35 years since its last rehab, LaGrange Lock and Dam in Versailles, IL was in major need of rehabilitation. Nelosca partnered with prime contractor Shimmick Construction (Shimmick) and the U.S. Army Corps of Engineers (USACE) Rock Island District, along with hundreds of crew members, to execute quality repairs through the existing lock.

Nelosca Technologies (Nelosca) formally announces their Small Business Administration (SBA) 8(a) certified joint venture with Ahtna Marine & Construction Company, LLC (AMCC). Publicly titled the Ahtna – J.F. Nelosca JV, the partnership establishes a mentor protégé relationship between Nelosca and Alaska Native Corporation subsidiary AMCC.

102 years of lateral earth pressure and deterioration at Pisgah Dam caused its existing spillway wall to lean. Partnering with private dam owner Otter Tail Power Company, Nelosca ensured their hydropower dam received necessary repairs. The project included concrete demolition and the replacement of the dam's north spillway wall over two years.

The Federal Energy Regulatory Commission (FERC) regulates the transmission and wholesale sale of electricity in the United States. An important duty of FERC is to monitor conditions of the more than 1,700 non-federal, electricity-generating dams in the US. They also set standards that hydropower project owners must follow to ensure the safety of the general public. This includes mandating regular inspections of hydropower projects to certify they are in sound condition and comply with the Commission’s safety standards. Owners not in compliance with the Commission’s inspection standards risk losing their power generating license.

Nelosca Technologies, Inc. (Nelosca) recently won a contract with AECOM Energy and Construction (AECOM) for remediation work on LaGrange Lock and Dam on the Illinois River. The contract required us to partake in major gate and concrete rehab while supplying wireless internet access not only to our own Nelosca office trailers, but also to prime contractor AECOM and the United States Army Corps of Engineers (USACE) for the duration of the multi-year project.

Through multiple successful projects, Nelosca Technologies (Nelosca) developed a great partnering relationship with the Midwest group of Xcel Energy® (Xcel). From Federal Energy Regulatory Commission (FERC) dive inspections and innovative dam repair projects to the implementation of amphibious equipment and helicopters for transmission line installation, we are always looking at ways of incorporating Nelosca’s “can-do” attitude into all client interactions. This year, we got the opportunity to work with Xcel’s Western group.

Nelosca blog posts were viewed 13,622 times in 2019. Reviewing our most-searched blog topics helps us construct a list of the marine industry's most critical topics and those most pertinent to our company. So, what were the most-searched topics?

As a marine solutions company, Nelosca Technologies, Inc. (Nelosca) faces a unique array of regulations and rules. While every company deals with regulations, most deal with rules that impact operations only on land or only in the water. We are accountable for regulatory requirements in both areas and have been for years. So, what's changed and what are we doing about it? 

At Nelosca, we work on dams of various sizes and functions. Very few new dams are built each year, so most of our work consists of rehabilitation and repairs. Dams are built to last for long periods of time, however certain components require periodic repairs and replacements. Radial gates, often referred to as Tainter gates, consist of components most commonly in need of attention. In our experience, we have found certain best practices that will increase the longevity of these gates, as well as increase their functionality.

Working around water poses a plethora of challenges. There are always two parts of a water-based project, the above and below water sections. Access to the above water section is easy, however when working below the waterline access is not that easy. One of the more apparent issues is what do you do when the water is in the way of your work? One solution is to build a cofferdam.