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
In-situ remediation technique: (Enhanced) natural attenuation, anaerobic, In situ Metal Precipitation (ISMP)
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
In situ saneringstechniek: (Enhanced) natural attenuation, anaerobic, In situ Metal Precipitation (ISMP)
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
Related techniques: (Enhanced) natural attenuation, anaerobic, In situ Metal Precipitation (ISMP)
Related HIP-pilots: HIP-pilot Assessing stable end situation CVOC 1, HIP-pilot Assessing stable end situation CVOC 2, HIP-pilot Direct push shock load protamylasse – radius of influence and effect substrate, HIP-pilot Field comparison 2 substrates for anaerobic degradation CVOC, HIP-pilot Specific monitoring biological degradation