Summary

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

In-situ remediation technique:

Case detailed information

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:
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