New In-River Dredged Material Disposal Site

The Bonny Channel Company (BCC) are responsible for undertaking maintenance and capital dredging in the Bonny River on behalf of Nigerian Ports Authority. With the navigational channel in excess of 100 kilometers, dredged material is primarily discharged offshore or in the existing in-river disposal site. Use of the in-river disposal site substantially reduces the overall […]

PROJECT SUMMARY
Project start: Jul 2019
Project completion: Jul 2021
Sectors: Maritime
Project location: Rivers State, Nigeria

The Bonny Channel Company (BCC) are responsible for undertaking maintenance and capital dredging in the Bonny River on behalf of Nigerian Ports Authority.
With the navigational channel in excess of 100 kilometers, dredged material is primarily discharged offshore or in the existing in-river disposal site. Use of the in-river disposal site substantially reduces the overall haul distance, sailing times, and associated cost of dredging. However, as periodic dredging of the in-river disposal site is required to provide space for dredged material disposal CARES have been tasked with identifying a new location for in-river disposal.
In order to identify possible areas suitable for in-river disposal CARES are reviewing existing and available data. Locations will be identified considering the physical restrictions of the local marine environment, where adequate depth is available, and where disposal would not affect the hydraulic constraints of the river and the safety of navigation. CARES will then undertake additional data gathering to identify suitable sites. CARES would then complete an assessment of the fate of dredged material using a Tracer Study. Fate of dredged material will then be used to investigate effect on dredging volumes. An Environmental and Social Impact Assessment (ESIA) will form part of CARES study.

SERVICES PROVIDED:
• Environmental and Social Impact Assessment (ESIA) • Dredged Material Disposal Sites Identification • Site Evaluation (including effect on sailing times / haul distance and associated cost of dredging) • Environmental Tracer Study to Assess the Fate of Dredged Material

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