Summary

Case submitted by: Heijmans
Country: the Netherlands
Built-up site?: Yes
Soil type: Predominantly sand
Follow-up required?: No
Treated contamination: Mineral oil and BTEX
Medium contamination: Soil/ pure product and ground water
Dimension contamination: 10.000 m3
Remediation goal: Load removal 100%
Remediation goal achieved?: Not yet, the project is still going on. Remediation goal is nearly achieved (Feb 2013).
Initial and final concentration or load removal: Contaminant pentane
Initial concentration: >10.000 µg
Contaminant 2: benzene
Initial concentration: >1000 µg
Contaminant 3: mineral oil C6-C10. Initial concentration: >5000 total amount inital: 1.000.000 kg; total amount final: 1.000 kg minerale olie totale vracht start: 1.000.000 kg; vracht momenteel: ca. 1000 kg.
Active remediation phase: 01/09/2011 till 31/12/2013
Passive remediation phase: –

Case detailed information

General information
Project name: Rotterdam Europoort: mineral oil and BTEX Case submitted by: Heijmans Contact: A. Peene Address: Ertveldweg 31, ‘s-Hertogenbosch Telephone number: +31 (0)6203 92 493 Email-address: apeene@heijmans.nl
Location
Country: the Netherlands City/region/county: Rotterdam (future) use of location: Industry Built-up location during the active remediation phase?: Yes
Technique
Explanation technique: Air injection and natural attenuation is applied in the upper soil layer (plant litter layer), with pump & treat at ground level. Pure product is removed by skimming and drainage. The groundwater is aerated and further treatment is by natural attenuation in the upper soil layer. Also other remediation techniques applied?: No After care needed?: No Rationale for the chosen technique: The fraction of oil is light and therefore easily degradable. Pure product is removed and additional injection of oxygen and nutrients cause natural degradation in the soil. Soil vapor extraction is necessary and in view of the expected high levels in the air phase a thick biobed is needed at groundlevel.
Contamination
Treated contaminant(s): Mineral oil and BTEX Contaminant phase: Soil/ pure product and ground water Size contamination: 10.000 m3 Depth contamination: 4 m-mv
Soil
Soil type: Predominantly sand Saturated/unsaturated zone?: Both, saturated as unsaturated Permeability: > 0,1 m/day, determined by field data Flow velocity or gradient groundwater:
Result, duration, expense
Remediation goal: Load removal 100% Remediation goal achieved?: Not yet, the project is still going on. Remediation goal is nearly achieved (Feb 2013). Initial and final concentration and load removal: Contaminant pentane Initial concentration: >10.000 µg Contaminant 2: benzene Initial concentration: >1000 µg Contaminant 3: mineral oil C6-C10. Initial concentration: >5000 total amount inital: 1.000.000 kg; total amount final: 1.000 kg minerale olie totale vracht start: 1.000.000 kg; vracht momenteel: ca. 1000 kg. Active remediation phase: 01/09/2011 till 31/12/2013 Passive remediation phase: - Total costs passive/after care phase: - Total costs active phase: € 900.000,-
Stakeholders
Problem owner: Not te be revealed, a storager of fuel products. Contractor: Heijmans Remediation plan: Heijmans Remediation research: Heijmans Competent authority: DCMR Contact information stake holders: A. Peene
Additional information
Lessons learned: The removal of the contaminant proceeds fast. This is partly determined by increase of temperature, especially in the leaf litter layer (up to 35 C). This indicates a rapid degradation of a large volume. The original estimation for the remediation of four years is adjusted to two years. Remarks:
Related techniques and HIP-pilots
Related HIP-pilots: