Summary

Case submitted by: NTP Milieu
Country: The Netherlands
Built-up site?: Yes
Soil type: Layered soil; clay/peat/sand
Follow-up required?: Yes, monitoring
Treated contamination: Chlorinated Volatile Organic Compounds (CVOC), Zinc
Medium contamination: Groundwater
Dimension contamination: 75.000 m3
Remediation goal:
Final concentration
Zn concentration: 412 µg/l
PCE concentration: 20 µg/l
TCE concentration: 262 µg/l
Cis-DCE concentration: 10 µg/l
VC concentration: 2,5 µg/l
Remediation goal achieved?: Yes
Initial and final concentration or load removal:

Active remediation phase: 17/04/2007 until 22/06/2007
Passive remediation phase: The passive phase is not yet completed.
Added reports:
referentieproject venlo 2010.pdf

Case detailed information

General information
Project name: Venlo: CVOC and zinc*** Case submitted by: NTP Milieu Contact: De heer W.J.M. Havermans Address: Postbus 6280 7503 GG Enschede Telephone number: +31 (0)53 - 461 49 05 Email-address: info@ntp-enschede.nl
Location
Country: The Netherlands City/region/county: Edisonstraat, Venlo, Limburg (future) use of location: Industrial Built-up location during the active remediation phase?: Yes
Technique
Explanation technique: Also other remediation techniques applied?: No After care needed?: Yes, monitoring Rationale for the chosen technique: Metal precipitation in combination with enhanced anaerobe degradation is most cost effective.
Contamination
Treated contaminant(s): Chlorinated Volatile Organic Compounds (CVOC), Zinc Contaminant phase: Groundwater Size contamination: 75.000 m3 Depth contamination: 12 m below surface
Soil
Soil type: Layered soil; clay/peat/sand Saturated/unsaturated zone?: Saturated zone Permeability: > 0,1 m/dag, based on field data Flow velocity or gradient groundwater: 3,4 m/km 25 m/dag
Result, duration, expense
Remediation goal: Final concentration Zn concentration: 412 µg/l PCE concentration: 20 µg/l TCE concentration: 262 µg/l Cis-DCE concentration: 10 µg/l VC concentration: 2,5 µg/l Remediation goal achieved?: Yes Initial and final concentration and load removal: Active remediation phase: 17/04/2007 until 22/06/2007 Passive remediation phase: The passive phase is not yet completed. Total costs passive/after care phase: Total costs active phase: € 292.500,-
Stakeholders
Problem owner: Contractor: NTP Milieu Enschede Remediation plan: ERM Remediation research: ERM Competent authority: Gemeente Venlo Contact information stake holders: De heer W. Havermans NTP Milieu
Additional information
Lessons learned: Due to the heterogeneity of the soil the distribution of the substrate was different than expected. Remarks:
Related techniques and HIP-pilots