Case submitted by: NTP Milieu
Country: The Netherlands
Built-up site?: Yes
Soil type: Mainly sand
Follow-up required?: No
Treated contamination: Mineral oil
Volatile aromants, including benzene (BTEX)
Naphthalene
Medium contamination: Soil/pure soil product and groundwater
Dimension contamination: 60.000 m3
Remediation goal:
Final concentration < semi value
Concentration benzene: Soil 0,05 mg/kg; Groundwater 7,6 µg/l
Concentration toluene: Soil 6,5 mg/kg; Groundwater 251,8 µg/l
Concentration ethylbenzenes: Soil 2,5 mg/kg; Groundwater 17,6 µg/l
Concentration xylenes: Soil 1,25 mg/kg; Groundwater 17,5 µg/l Concentration naphthaleen: Soil 252,5 mg/kg; Groundwater 162,5 µg/l
Concentration Mineral oil: Soil 2,5 mg/kg; Groundwater 38,5 µg/l Removal load percentage: 99 %
Remediation goal achieved?: Yes
Initial and final concentration or load removal:
Benzene initial concentration: 5.000 µg/l; final concentration: < 7,6 µg/l
Toluene initial concentration: 33.000 µg/l; final concentration: < 252 µg/l
Ethylbenzene initial concentration: 5.000 g/l; final concentration: < 38,5 µg/l
Xylenes initial concentration: 20.000 µg/l; final concentration: < 17,6 µg/l
Mineral oil initial concentration: 1.000 mg/kg; final concentration: 57 mg/kg
Active remediation phase: 15/08/2003 until 16/11/2006
Passive remediation phase:
Added reports:
referentieproject putten.pdf
Putten (Garage Koster): Mineral oil, BTEX, Naphthalene***
Summary
In-situ remediation technique: (Enhanced) natural attenuation, aerobic, Air stripping, Pump & treat, Soil vapor extraction
General information
Project name: Putten (Garage Koster): Mineral oil, BTEX, Naphthalene***
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: Industrieweg, Putten, Gelderland
(future) use of location: Industrial, Residence
Built-up location during the active remediation phase?: Yes
Technique
In situ saneringstechniek: (Enhanced) natural attenuation, aerobic, Air stripping, Pump & treat, Soil vapor extraction
Explanation technique:
Also other remediation techniques applied?: No
After care needed?: No
Rationale for the chosen technique: Enhanced biological degradation of soil contaminated with oil components is the most logical option an intensive built envrionment.
Contamination
Treated contaminant(s): Mineral oil
Volatile aromants, including benzene (BTEX)
Naphthalene
Contaminant phase: Soil/pure soil product and groundwater
Size contamination: 60.000 m3
Depth contamination: 12 m below surface
Soil
Soil type: Mainly sand
Saturated/unsaturated zone?: Saturated zone and unsaturated zone
Permeability: > 0,1 m/day, based on field data
Flow velocity or gradient groundwater: 1,4 m/km
17,5 m/day
Result, duration, expense
Remediation goal:
Final concentration < semi value
Concentration benzene: Soil 0,05 mg/kg; Groundwater 7,6 µg/l
Concentration toluene: Soil 6,5 mg/kg; Groundwater 251,8 µg/l
Concentration ethylbenzenes: Soil 2,5 mg/kg; Groundwater 17,6 µg/l
Concentration xylenes: Soil 1,25 mg/kg; Groundwater 17,5 µg/l Concentration naphthaleen: Soil 252,5 mg/kg; Groundwater 162,5 µg/l
Concentration Mineral oil: Soil 2,5 mg/kg; Groundwater 38,5 µg/l Removal load percentage: 99 %
Remediation goal achieved?: Yes
Initial and final concentration and load removal:
Benzene initial concentration: 5.000 µg/l; final concentration: < 7,6 µg/l
Toluene initial concentration: 33.000 µg/l; final concentration: < 252 µg/l
Ethylbenzene initial concentration: 5.000 g/l; final concentration: < 38,5 µg/l
Xylenes initial concentration: 20.000 µg/l; final concentration: < 17,6 µg/l
Mineral oil initial concentration: 1.000 mg/kg; final concentration: 57 mg/kg
Active remediation phase: 15/08/2003 until 16/11/2006
Passive remediation phase:
Total costs passive/after care phase:
Total costs active phase: € 280.000,-
Stakeholders
Problem owner: Garage Koster Nijkerk
Contractor: NTP Milieu Enschede
Remediation plan: NTP Milieu Enschede
Remediation research: n/a
Competent authority: Provincie Gelderland
Contact information stake holders: De heer W. Havermans (NTP)
Additional information
Lessons learned:
Remarks:
Related techniques and HIP-pilots
Related techniques: (Enhanced) natural attenuation, aerobic, Air stripping, Pump & treat, Soil vapor extraction
Related HIP-pilots: