CURRENT METER DEPLOYMENT/HYDROGRAPHIC SURVEY

TransTech can deploy current meters, carry out dye release programmes and undertake drogue deployments for any size of project.

 

Our hydrographic surveys can be carried out for a wide variety of applications requiring current speed and direction data for a specific site.

 

These include but are not limited to:

DISTILLERIES

For distillery discharges SEPA sometimes requires a hydrographic survey.  When a hydrographic survey is required it should include data from a current meter deployed at or near the point of the proposed discharge.  The deployment should be for a minimum of 15 days over a spring/neap tidal or neap/spring tidal cycle to allow assessment of current speed and direction. 

 

This information, together with the outfall location, dimensions, effluent flows, effluent density, relevant concentrations of important substances, depth and potential for overlying stratified water column will allow an estimate to be made of initial dilution through the use of dilution modelling software or numeric calculations.

 

A dye release programme from the same site may also be required. This should be sufficient but in areas where bottom or shore topography is irregular a drogue release may aid the understanding of where the effluent might travel to immediately after release. Background levels of many contaminants are rarely zero and in calculating the potential to meet the Environmental Quality Standards, background levels should be measured and allowed for.

FISH FARMS

We regularly carry out hydrographic work for fish farming companies.  The data is used for AutoDEPOMOD and BathAuto modelling purposes.  This enables the modelling process to become more efficient as all work is undertaken in-house and is particularly pertinent to ADCP current meter deployments where the most appropriate bins, which meet SEPA criteria, can be selected for modelling.

 

For a fish farm site, wind speed and direction can be measured during the period of deployment in order to comply with Attachment VIII of the Fish Farm Manual.

WAVE POWER, TIDAL POWER AND OFFSHORE WIND TURBINES

Current meters can be deployed at sites for proposed marine renewable energy schemes and we can undertake bathymetric surveying and EIA work.  The data can is used for secure siting of structures on the seabed and optimisation of tidal power recovery.

SUBSEA PIPELINES & CABLES

TransTech can deploy current meters at sites to ensure that pipelines meet materials specifications and that pipeline and cables are appropriately secured.  If required we can also take grab samples for benthic biology assessment.

POWER STATIONS

Hydrographic work can be undertaken for thermal discharges (cooling water) from electricity generation plants for dilution modelling purposes.

 

For more information on our hydrographic services please call the office on 01631 720699, or if you would like to request a fee quote for your project contact us by email at info@transtechlimited.com with the details of the project.

TransTech Limited   Marine Resource Centre   Barcaldine   Oban   Argyll   PA37 1SE   Scotland   United Kingdom