J.F. Brennan can offer two solutions to transporting dredge spoils to the stockpile areas. These include hydraulic and barge transport, or even a combination of both.
Brennan uses HDPE pipeline to transport sediments because it is a safe and cost-effective method to ensure that materials remain within the sealed transport system. This method is most commonly used with hydraulic cutter head dredges, but can also be implemented on mechanical systems.
J.F. Brennan Company has experience in long-distance transport using HDPE pipeline. We have pumped sediment slurry up to 12 miles using sound attenuated boosters. This system is very effective in reducing project impact on local infrastructure, recreational boaters, and commercial traffic.
Brennan has utilized material barges for over a half a century to transport mechanical dredge spoils and other materials throughout the inland waterway system. Material barges are often used in shallow draft situations and are constructed in such a way that surface area is maximized. These material barges are very conducive to unloading by excavators and end loaders.
Mechanical Dredging with HDPE Pipeline Transport
Brennan has experienced projects where a combination of mechanical dredging and hydraulic transport yields the best results. The operation typically includes using mechanical methods to dredge the contaminated sediment and place it into a mixing system where it is turned into slurry. This includes a debris separation unit, followed by a custom-designed slurry tank where clean water is added and the material is liquefied. From here the material is pumped into an HDPE pipeline for final transport to the dewatering area or retaining pond.