Case submitted by: Verhoeve Milieu & Water
Country: the Netherlands
Built-up site?: Yes
Soil type: Layered soil: clay/peat/sand
Follow-up required?: Yes, namely monitoring.
Treated contamination: CVOC
Medium contamination: Soil/ pure product and groundwater
Dimension contamination: 100.000 m3
Remediation goal: Final concentration: contaminant PCE+TCE concentration: 100 µg/l
contaminant VC concentration: 5 µg/l
Load removal 94 %
Remediation goal achieved?: Yes, based on load removal
Initial and final concentration or load removal: Contaminant VOCL-total Initial concentration 12.000 µg/l, final concentration 1.000 µg/l
total amount initial 3.000 kg, total amount final 188 kg
Active remediation phase: 02/02/2005 till 01/05/2010
Passive remediation phase: 01/05/2010 till 31/12/2011
Added reports:
terneuzen eindrapportage isco_bijlagen.pdf
terneuzen eindrapportage isco_rapport.pdf
Terneuzen ‘De Zon’: CVOC; ISCO
Summary
In-situ remediation technique: In situ chemical Oxidation (ISCO)
General information
Project name: Terneuzen ‘De Zon’: CVOC; ISCO
Case submitted by: Verhoeve Milieu & Water
Contact: Art Lobs
Address: Aventurijn 600
Dordrecht Netherlands
Telephone number: + 31 78 6520070
Email-address: a.lobs@verhoevemilieu.com
Location
Country: the Netherlands
City/region/county: Terneuzen, Zeeland
(future) use of location: Urban area
Built-up location during the active remediation phase?: Yes
Technique
In situ saneringstechniek: In situ chemical Oxidation (ISCO)
Explanation technique: Injection through laminar spargepoints with perozone (ozone and peroxide (60 pc)), during 4 years to treat source and plume.
Also other remediation techniques applied?: Yes, biological degradation is applied in the source zone
After care needed?: Yes, namely monitoring.
Rationale for the chosen technique:
Contamination
Treated contaminant(s): CVOC
Contaminant phase: Soil/ pure product and groundwater
Size contamination: 100.000 m3
Depth contamination: 17 m-mv
Soil
Soil type: Layered soil: clay/peat/sand
Saturated/unsaturated zone?: Saturated zone
Permeability: > 0,1 m/day, determined by field data.
Flow velocity or gradient groundwater:
Result, duration, expense
Remediation goal: Final concentration: contaminant PCE+TCE concentration: 100 µg/l
contaminant VC concentration: 5 µg/l
Load removal 94 %
Remediation goal achieved?: Yes, based on load removal
Initial and final concentration and load removal: Contaminant VOCL-total Initial concentration 12.000 µg/l, final concentration 1.000 µg/l
total amount initial 3.000 kg, total amount final 188 kg
Active remediation phase: 02/02/2005 till 01/05/2010
Passive remediation phase: 01/05/2010 till 31/12/2011
Total costs passive/after care phase: €25.000 ,-
Total costs active phase: € 855.000 ,-
Stakeholders
Problem owner: Province Zeeland
Contractor: Verhoeve Milieu & Water
Remediation plan: ABO
Remediation research: ABO
Competent authority: Province Zeeland
Contact information stake holders: ABO – Province Zeeland
Additional information
Lessons learned: When a large volume of soil needs to be treated, a combination with multi-phase extraction is necessary
Remarks: It was a complex contamination in a complex soil. A large volume soil needed to be treated with ISCO.
Related techniques and HIP-pilots
Related techniques: In situ chemical Oxidation (ISCO)
Related HIP-pilots: HIP-pilot Optimizing ISCO for CVOC