Summary

Case submitted by: Verhoeve Milieu & Water
Country: Netherlands
Built-up site?: Yes
Soil type: Predominantly sand
Follow-up required?: No
Treated contamination: Chlorinated volatile organic compounds (CVOC)
Mineral oil
Volatile hydrocarbons, including benzene (BTEX)
PAH’s, light (2 and 3-rings)
PAH’s, heavy (4, 5 and 6 rings)
Naphthalene
Creosote
Medium contamination: Soil/ pure product and groundwater
Dimension contamination: 5.000 m3 groundwater and 600 m3 soil
Remediation goal: Stable end situation; step 2
Remediation goal achieved?: Yes
Initial and final concentration or load removal: Contaminant PAK Initial concentration 20.000 µg/l, final concentration 4000 ug/l
total amount final 250 kg Contaminant 2: MO Initial concentration: 26.000 final concentration: 500unit:ug/l total amount inital: [kg] total amount final: 400 [kg] Contaminant 3: BTEX Initial concentration: 8.000 final concentration: 50unit:ug/l total amount inital: [kg] total amount final: 3 [kg]
Active remediation phase: 01/03/2009 till 16/12/2009
Passive remediation phase: till December 2009

In-situ remediation technique:

Case detailed information

General information
Project name: Bloemendaal; CVOC's, Mineral Oil, BTEX,PAH's, naphtalene: 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: Netherlands City/region/county: Bloemendaal, Noord-Holland (future) use of location: Urban area Built-up location during the active remediation phase?: Yes
Technique
In situ saneringstechniek:
Explanation technique: Injected with Perozone (ozone/peroxide) during 6 months for source treatment, to obtain a fast remediation of the soil enabling building activities. Injection executed with 21 laminar sparge points Also other remediation techniques applied?: No After care needed?: No Rationale for the chosen technique: Quick removal of contaminations was necessary for building activities.
Contamination
Treated contaminant(s): Chlorinated volatile organic compounds (CVOC) Mineral oil Volatile hydrocarbons, including benzene (BTEX) PAH’s, light (2 and 3-rings) PAH’s, heavy (4, 5 and 6 rings) Naphthalene Creosote Contaminant phase: Soil/ pure product and groundwater Size contamination: 5.000 m3 groundwater and 600 m3 soil Depth contamination: 12 [m –mv]
Soil
Soil type: Predominantly sand Saturated/unsaturated zone?: Saturated zone Permeability: > 0,1 m/day, determined by field data. Flow velocity or gradient groundwater: 1 m/day
Result, duration, expense
Remediation goal: Stable end situation; step 2 Remediation goal achieved?: Yes Initial and final concentration and load removal: Contaminant PAK Initial concentration 20.000 µg/l, final concentration 4000 ug/l total amount final 250 kg Contaminant 2: MO Initial concentration: 26.000 final concentration: 500unit:ug/l total amount inital: [kg] total amount final: 400 [kg] Contaminant 3: BTEX Initial concentration: 8.000 final concentration: 50unit:ug/l total amount inital: [kg] total amount final: 3 [kg] Active remediation phase: 01/03/2009 till 16/12/2009 Passive remediation phase: till December 2009 Total costs passive/after care phase: Total costs active phase: € 225.000,-
Stakeholders
Problem owner: Province Noord Holland Contractor: Verhoeve Milieu & Water Remediation plan: Remediation research: Competent authority: Province Noord Holland Contact information stake holders:
Additional information
Lessons learned: Using perozone a fast removal of PAK's, MO and BTEX in sand is able. Remarks:
Related techniques and HIP-pilots