Rossington Colliery Remediation

Part of the site was a former coal carbonisation plant and elevated concentrations of Napthalene, Benzene, Phenol and Ammonia were present. VHE successfully treated the contaminated materials by biophysical treatment to render the materials reusable on site, below the capping levels. In total 1600m3 was treated using biophysical remediation and reused on site.

The excavated material was then processed to form a new engineered platform using end product compaction. Validation testing including zone and settlement tests were also required for this project. Further works included a thrustbore under an existing railway line and the installation of associated drainage systems.

The site was capped utilizing the washed discard from the adjacent coal recovery site (54,000m3) which was engineered to reduce its OMC (option moisture content) to suitable levels.

Throughout the project VHE had to plan and deal with a number of ecological issues which included working adjacent to a river, nesting birds and the felling of 300no trees.

Further challenges were encountered and overcome during this project which included working adjacent to a live rail head liaising with both the adjacent coal recovery contractor and the main contractor constructing the FARRRS route. There was also a requirement for segregation of several streams of excavated materials which had the potential to cause logistical difficulties. Despite this the project was delivered on time and was deemed a huge success.