Case submitted by: BioSoil
Country: The Netherlands
Built-up site?: No
Soil type: Mainly sand
Follow-up required?: Yes
Treated contamination: Mineral oil
Volatile aromats, including benzene (BTEX)
Medium contamination: Soil/pure product and groundwater
Dimension contamination: 4300 m3(soil); 3600 m3 (groundwater)
Remediation goal: Stable end situation
Remediation goal achieved?: Yes
Initial and final concentration or load removal:
Mineral oil initial concentration: 2100 µg/l; final concentration: < 325 µg/l(almost all monitoring wells < 50µg/l)
BTEX initial concentration: 2320 µg/l; final concentration: Below T-value for all components
Active remediation phase: May 2002 until July 2006
Passive remediation phase: The passive phase is completed. Realization period July 2006 until May 2007
Added reports:
Eindhoven (Marconiplein): Mineral oil and BTEX***
Summary
In-situ remediation technique: (Enhanced) natural attenuation, aerobic
General information
Project name: Eindhoven (Marconiplein): Mineral oil and BTEX***
Case submitted by: BioSoil
Contact: Mw. C. v.d. Steenhoven
Address: Nijverheidsweg 27
3341 LJ Hendrik Ido Ambacht
Telephone number: +31 (0)78-682 01 40
Email-address: c.vandesteen@biosoil.com
Location
Country: The Netherlands
City/region/county: Eindhoven, Noord-Brabant
(future) use of location: Roundabout
Built-up location during the active remediation phase?: No
Technique
In situ saneringstechniek: (Enhanced) natural attenuation, aerobic
Explanation technique:
Also other remediation techniques applied?: Yes, subsurface purification system for groundwater and excavation
After care needed?: Yes
Rationale for the chosen technique: The location (busy roundabout) needed to remain usable. Aerobic biological degradation was applied since the contamination was present up to -24 m.
Contamination
Treated contaminant(s): Mineral oil
Volatile aromats, including benzene (BTEX)
Contaminant phase: Soil/pure product and groundwater
Size contamination: 4300 m3(soil); 3600 m3 (groundwater)
Depth contamination: 24 m below surface
Soil
Soil type: Mainly sand
Saturated/unsaturated zone?: Saturated zone and unsaturated zone
Permeability: > 0,1 m/day, based on field data
Flow velocity or gradient groundwater:
Result, duration, expense
Remediation goal: Stable end situation
Remediation goal achieved?: Yes
Initial and final concentration and load removal:
Mineral oil initial concentration: 2100 µg/l; final concentration: < 325 µg/l(almost all monitoring wells < 50µg/l)
BTEX initial concentration: 2320 µg/l; final concentration: Below T-value for all components
Active remediation phase: May 2002 until July 2006
Passive remediation phase: The passive phase is completed. Realization period July 2006 until May 2007
Total costs passive/after care phase: € 320.000,-
Total costs active phase:
Stakeholders
Problem owner:
Contractor: BioSoil
Remediation plan: BioSoil
Remediation research: Grontmij
Competent authority: SRE Milieudienst Eindhoven
Contact information stake holders:
Additional information
Lessons learned: Since the concentrations of groundwater contamination declined less than expected, the system was expanded in 2005 by one filter. In 2006 hydrogen peroxide was dosed to optimize the oxygen supply.
Remarks
Related techniques and HIP-pilots
Related techniques: (Enhanced) natural attenuation, aerobic
Related HIP-pilots: