The Challenge:
Following damage to an oil-feed line, approximately 2000 litres of kerosene was lost to ground at the rear of a residential property. Oil hit the shallow groundwater and started to migrate in to the local watercourse. The challenge came firstly to restrict the spread of kerosene down stream to a fishery, then remediate the site.
The Solution:
Emergency mitigation measures were deployed to prevent migration of kerosene further off-site using absorbent booms deployed in strategic locations. A sandbag barrier wall was constructed along the banking to divert the water flow away from the impacted bank, absorbents were then placed behind the barrier to intercept kerosene before it reached the watercourse.
Emergency Works
Following an initial site assessment, a drilling rig was rapidly mobilised to site to facilitate assessment of the groundwater conditions. Groundwater extraction boreholes were installed at the same time as the assessment works; one borehole was positioned to extract kerosene from near the spill source, and 3 further boreholes positioned to intercept contamination before it reached the water course.
Due to restricted site access a bespoke water treatment system was designed and installed on site. Borehole pumps were installed to extract both free and dissolved phase kerosene from the ground water. The pumps were run on a programmed schedule to enable the system to run 24/7. A self-regulating treatment system was installed to reduce supervision requirements and therefore create cost savings. The system comprised an oil-water separator followed by a carbon filters, all installed within a garden shed with pipes and cables buried to enable full use of the garden by the homeowner.
Weekly monitoring of the system and watercourse were carried for the duration of the project. Upon completion of the project the water treatment equipment and buried pipe work was removed from the property and the resident’s garden re-instated to pre-spill conditions. Works were concluded with a scientifically robust verification report.
The Challenge
Iduna Ltd were called in to assess the extent of impact from an oil spill in the rear garden of a residential property. Approximately 500 litres of kerosene had been lost to ground from a crack in the heating oil tank, all 500 litres of kerosene was found to be contained in soils beneath and adjacent to the tank. The oil leak had not spread to neighbouring properties.
The Solution to clean up the Oil spill
Iduna Ltd provided 2 options for remedial works to the client. A dig & dispose option was chosen due to the requirement to return the amenity of the property as soon as possible.
The property was protected against damage from the works, using durable boards and herras fencing. Mini-plant was then mobilised to site to excavate and remove impacted soils. All impacted materials were disposed of at an appropriately licensed facility.
Re-instatement following remediation included backfilling the excavation, construction of a compliant tank plinth, and re-turfing of the area.
For further information on managing an oil spill at your property please contact Iduna Ltd on 05392 44965 or 087 7169535. We offer a 24 hour rapid response service.
Our rapid response team will assist you to prevent further health and environmental damage by:
- Assessing the extent of the spill.
- Reducing the flow from the source if possible.
- Providing containment solutions to prevent further damage.
- If containment is not possible, then remove the remaining oil safely from its source if possible.
- Consider the potential for extensive damage to the environment and inform the relevant authorities.
If you need further advice on dealing with an oil spill, please contact us on 087 7169535/ 053 92 44965 where our team of advisers will guide you protect the environment.
IDUNA LTD carried out some very detailed restoration work to my period home in Wexford, which was In a state of ruin. Their team of expert restoration workers lovingly restored our now magnificent home to its present glory. Their expertise is truly remarkable as you can see from the before and after pictures I enclose. Their team are very hard working, mannerly and respectful of our property and kept us totally informed at all stages of the project. I highly recommend Iduna Ltd for any construction or restoration project in the future.
Idunal Ltd were called in to renovate my home and garden. They provided an excellent service and I could not believe the end result. Their hard landscape and horticulture knowledge was far superior to my expectations and I am so pleased with the newly designed garden.