On 18th July 2021
In General, Research and Development, Sediment Management, Surveying
By David

In June this year Exo Environmental carried out sediment sampling along the river Trent at Flixborough, North Lincolnshire. Using our Exo surveyor, we launched from RMS Trent Ports and carried out benthic riverine sediment sampling using our Van Veen sampling grab. In what was most likely the hottest day of the year, we donned our drysuits […]

May

20

Multi-Beam Bathymetry Survey

On 20th May 2021
In General, Sediment Management, Surveying
By Izaak

Exciting news! Last month we carried out our first multi-beam bathymetry survey of 2021! This took place along the River Colne, covering approximately 28km over two days from Brightlingsea Marina to Colchester and back. This work formed part of a trial of the equipment and processing tools, brought to us by Norbit systems. The multi-beam […]

Oct

13

Using Sediment As a Resource

On 13th October 2020
In Dredging, Ecology, Sediment Management
By David

Last week we had an exciting opportunity to present at a virtual event organised by Platform Baggernet. The International webinar ‘Dredging As a Resource’ was organised in combination with the final symposium of the Interreg2seas project ‘Using Sediment As a Resource’ USAR, on the 8th October 2020. The team at Exo has been involved with […]

Aug

13

What is Sediment Sampling?

On 13th August 2020
In Sediment Management
By Luke

Sediment sampling involves taking representative samples from the bed (benthic) or sub-surface of a tidal or non tidal water body. Sediment samples are commonly taken to assess the physical and chemical characteristics. It can also help to understand the natural and anthropogenic influences on the water quality and sediment lifecycles. The samples are processed, determining any number […]

Jan

22

What is PFAS and how does it affect waterbodies?

On 22nd January 2020
In Dredging, General, Sediment Management, Water Management
By Izaak

In July 2018 the Dutch government followed the example of some US states in implementing action levels concerning PFAS substances, stating an upper limit of 0.1 μg / kg. This means that only sediment/silt/soil with PFAS concentrations below this limit can be re-used or disposed at sea. However, because of the widespread disruption this has […]

Sep

26

How to sample sediment for a Marine License

On 26th September 2019
In General, Sediment Management, Water Management
By William

If your project in ‘tidal’ water is managed by the Marine Management Organisation (MMO) and involves the movement or dredging of sediment, a sediment survey is often required to determine the quality of the sediment. To do this, samples are required for chemical and physical analysis. We’ve listed the steps below to help you in […]

Sep

16

What are Nature Based Solutions?

On 16th September 2019
In Ecology, General, Research and Development, Sediment Management, Water Management
By David

Nature based solutions is a concept you might have come across, but in many cases, other than knowing they have something to do with nature, it can be difficult to imagine what they actually are. Nature based solutions or NBS, can be implemented in almost any infrastructure project to make use of the various ecosystem […]

Sep

05

Sustainable and Resilient Coastal Cities (SARCC)

On 5th September 2019
In General, Project Management, Research and Development, Sediment Management, Water Management
By William

Exo Environmental and partners have been working together on this Interreg 2seas programme since November 2017, where a culmination of ideas and thinking distilled into the SARCC project. The project developed another year until it was submitted to the Joint Secretariat of Interreg 2seas in November 2018. By early 2019 we received the approval for […]

Jul

25

What is a Bathymetric Survey?

On 25th July 2019
In General, Sediment Management, Water Management
By William

Bathymetry Bathymetry is the study of the bed (floor) of a waterbody, involving mapping of features on charts to provide information on water depth. Bathymetric charts are typically produced to aid navigation and inform dredging activities, for example during maintenance of navigational channels. Bathymetry traditionally uses an echosounder attached to a survey boat. As the […]

Jul

11

OSMS – Operational Sediment Management System Meeting

On 11th July 2019
In Engineering, General, Project Management, Sediment Management
By David

Last week, we travelled to London to meet all the partners of the Interreg 2seas USAR project. We have been managing the activities under this project for one of the Partners, Brightlingsea Harbour Commissioners. One of the main aims of the meeting was discussing one of the main outputs of USAR, the “Operational Sediment Management […]

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