Summary

Case submitted by: BAM Milieu
Country: The Netherlands
Built-up site?: Yes
Soil type: Layered soil; clay/peat/sand
Follow-up required?: No
Treated contamination: Chlorinated Volatile Organic Compounds (CVOC)
Medium contamination: Soil/pure product and groundwater
Dimension contamination: 50.000 [m3]
Remediation goal:
final concentration
PCE concentration: 40 μg/l
TCE concentration: 500 μg/l
cis-DCE concentration: 20 μg/l
vc concentration: 5 μg/l
Remediation goal achieved?: No, but based on the monitoring results, it is expected that the goal can be achieved in the future. The monitoring will continue.
Initial and final concentration or load removal:
PCE intial concentration: >100.000 μg/l ; final concentration: 1.060 μg/l
TCE intial concentration: >50.000 μg/l; final concentration: 7.038μg/l
cis-DCE inital concentration: >70.000 μg/l; final concentration: 15.381 μg/l
vc initial concentration: >5000 μg/l; final concentration 11,12 μg/l
Active remediation phase: 19/7/2004 until 18/10/2006
Passive remediation phase: The passive phase is not yet completed. Expected realization periode: 19/10/2006 until ?
Added reports:

In-situ remediation technique:

Case detailed information

General information
Project name: IJlst: CVOC ** Case submitted by: BAM Milieu Contact: dhr. ing. I.R. Cornelissen Address: Postbus 85, 3370 AB Telephone number: +31 (0)184 - 676 847 Email-address: info@bammilieu.nl
Location
Country: The Netherlands City/region/county: Friesland (future) use of location: Residence Built-up location during the active remediation phase?: Yes
Technique
Explanation technique: Injection of a shockload protamylasse by means of direct push Also other remediation techniques applied?: Yes, excavation of the top soil and construction of protection layer ('leeflaag') After care needed?: No Rationale for the chosen technique: Heterogenous soil profile with clay, sand and peat, potential for biological degradation of CVOC and the wish to use a technique that causes low site disturbance.
Contamination
Treated contaminant(s): Chlorinated Volatile Organic Compounds (CVOC) Contaminant phase: Soil/pure product and groundwater Size contamination: 50.000 [m3] Depth contamination: >40 m below surface
Soil
Soil type: Layered soil; clay/peat/sand Saturated/unsaturated zone?: Saturated zone Permeability: 0,01-0,1 m/day Flow velocity or gradient groundwater: 0,05 m/km
Result, duration, expense
Remediation goal: final concentration PCE concentration: 40 μg/l TCE concentration: 500 μg/l cis-DCE concentration: 20 μg/l vc concentration: 5 μg/l Remediation goal achieved?: No, but based on the monitoring results, it is expected that the goal can be achieved in the future. The monitoring will continue. Initial and final concentration and load removal: PCE intial concentration: >100.000 μg/l ; final concentration: 1.060 μg/l TCE intial concentration: >50.000 μg/l; final concentration: 7.038μg/l cis-DCE inital concentration: >70.000 μg/l; final concentration: 15.381 μg/l vc initial concentration: >5000 μg/l; final concentration 11,12 μg/l Active remediation phase: 19/7/2004 until 18/10/2006 Passive remediation phase: The passive phase is not yet completed. Expected realization periode: 19/10/2006 until ? Total costs passive/after care phase: Total costs active phase:
Stakeholders
Problem owner: Gemeente Wymbritseradiel Contractor: BAM Milieu Remediation plan: Grontmij Remediation research: Grontmij Competent authority: Provincie Fryslân Contact information stake holders:
Additional information
Lessons learned: Remarks: More info: Shock-load behandeling chloorkoolwaterstoffen-kern Nooitgedagt IJlst; Eindrapport SKB-project PT5400, Grontmij, TNO, BAM Milieu, Gemeente Wymbritseradiel, Provincie Fryslân en SKB, 22 november 2007
Related techniques and HIP-pilots