Summary
Case submitted by: Heijmans Infra Techniek
Country: The Netherlands
Built-up site?: Yes
Soil type: Mainly sand
Follow-up required?: No
Treated contamination: Chlorinated Volatile Organic Compounds (CVOC)
Volatile aromats, including benzene (BTEX)
Medium contamination: Groundwater
Dimension contamination: 380.000 m3
Remediation goal: Stable end situation
Remediation goal achieved?: yes
Initial and final concentration or load removal:
PCE initial concentration: max. 79000 ug/l; final concentration: max. 12 ug/l
TCE initial concentration: max. 1300 ug/l; final concentration: max. 6,4 ug/l
cis 1,2-dichloroethene intial concentration: max. 56000 ug/l; final concentration: max. 260 ug/l
vinylchloride initial concentration: max. 20 ug/l; final concentration: max. 690 ug/l
total initial load: 0,62 kg between S and I / 14,34 kg >I kg
Active remediation phase: 2006 until the end of 2007
Passive remediation phase: The passive phase is not yet completed.
Expected realization period: final 2007 until the end of 2011
Added reports:
Leidschendam Wijziging op ingestemd SP.pdf
Leidschendam bewonersfolder.pdf
Leidschendam Evaluatie 2008.pdf
Leidschendam Evaluatie actieve fase.pdf
Leidschendam Grondwatermonitoring.pdf
Leidschendam projectinforamtie neherpark.pdf
Leidschendam Saneringsplan.pdf
Case detailed information
General information
Project name: Leidschendam (Neherpark): CVOC and BTEX***
Case submitted by: Heijmans Infra Techniek
Contact: Dhr. A. Peene
Address: Postbus 68 5240 AB Rosmalen
Telephone number: +31 (0)73 - 543 68 01
Email-address: apeene@heijmans.nl
Location
Country: The Netherlands
City/region/county: Leidschendam, Zuid Holland
(future) use of location: Residence
Built-up location during the active remediation phase?: Yes
Technique
Explanation technique:
Also other remediation techniques applied?: Excavation
After care needed?: No
Rationale for the chosen technique:
Contamination
Treated contaminant(s): Chlorinated Volatile Organic Compounds (CVOC)
Volatile aromats, including benzene (BTEX)
Contaminant phase: Groundwater
Size contamination: 380.000 m3
Depth contamination: 10 m below surface
Soil
Soil type: Mainly sand
Saturated/unsaturated zone?: Saturated zone
Permeability: > 0,1 m/day, based on field data
Flow velocity or gradient groundwater:
Result, duration, expense
Remediation goal: Stable end situation
Remediation goal achieved?: yes
Initial and final concentration and load removal:
PCE initial concentration: max. 79000 ug/l; final concentration: max. 12 ug/l
TCE initial concentration: max. 1300 ug/l; final concentration: max. 6,4 ug/l
cis 1,2-dichloroethene intial concentration: max. 56000 ug/l; final concentration: max. 260 ug/l
vinylchloride initial concentration: max. 20 ug/l; final concentration: max. 690 ug/l
total initial load: 0,62 kg between S and I / 14,34 kg >I kg
Active remediation phase: 2006 until the end of 2007
Passive remediation phase: The passive phase is not yet completed.
Expected realization period: final 2007 until the end of 2011
Total costs passive/after care phase: € 1.100.000 ,-
Total costs active phase: € 1.100.000 ,-
Stakeholders
Problem owner: Sequoia Leidschendam
Contractor: Heijmans Infra Techniek
Remediation plan: Heijmans Infra Techniek
Remediation research:
Competent authority: Provincie Zuid Holland
Contact information stake holders:
Additional information
Lessons learned:
Remarks:
Related techniques and HIP-pilots