Remediation at ETA site in progress
EuroTank Amsterdam (ETA) ordered BioSoil B.V. to implement the remediation of their tankstoragefacility at the Jan van Riebeeckhavenweg.

Originally ten small storage tanks were located at the remediation location. These have all ready been demolished by a third party and the associated (subsurface) piping was removed. When the remediation is finished, two large storage tanks with a capacity of 15,300 m³ and a diameter of 31 meter will be reconstructed at the site.

BioSoil B.V. acquired the contract at the end of 2009, based on a fixed contract sum. The innovative, and thus highly cost effective nature, has played a major role in obtaining the contract. The excavated contaminated soil will be decontaminated biologically at a location adjacent to the site. This way of implementation saved the client a few hundred thousand Euros.

The surface of the remediation site covers approximately 6400 m² and the ground is excavated to a depth of approximately 2 meter. At the site a soil- and groundwater remediation is being performed. The soil is remediated by a combination of excavation and on-site treatment. The groundwater is cleaned with the ‘pump & treat’ method. The contamination consists of mineral oils and BTEXN. The maximum concentration of mineral oil in the ground is 10,000 mg / kg ds. For BTEXN this level is 350 mg / kg ds.

The excavation of the contaminated soil will be completed in several stages, because various activities are still to be carried out at the site. These include the diversion of pipes and the demolition and reconstruction of a pump house. The first stages are being delivered within the schedule (before March 1), despite frosts and preparation works that took more time than expected.

The excavated soil is biologically cleaned on a nearby location. With this form of ‘landfarming’ the biological activity is being stimulated by adding the necessary nutrients and oxygen. In this way, the contamination is degraded into harmless components, such as water and carbon dioxide. The expectation is that the total amount of soil (15,000 m³) will be decontaminated within one year.


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