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
Bloemendaal; CVOC’s, Mineral Oil, BTEX,PAH’s, naphtalene: ISCO
Summary
In-situ remediation technique: In situ chemical Oxidation (ISCO)
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: In situ chemical Oxidation (ISCO)
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
Related techniques: In situ chemical Oxidation (ISCO)
Related HIP-pilots: HIP-pilot Optimizing ISCO for CVOC