Summary

Case submitted by: Heijmans Infra Techniek
Country: The Netherlands
Built-up site?: yes
Soil type: Mainly sand
Follow-up required?: Monitoring CVOC decay and decay conditions
Treated contamination: CVOC
Medium contamination: Groundwater
Dimension contamination: 2000 m2
Remediation goal: Stabile end situation
Remediation goal achieved?: Yes
Initial and final concentration or load removal:
Tetrachloro-ethene initial concentration: max. 15000 ug/l; final concentration: max. 2 ug/l
Trichloro-ethene: initial concentration: max. 12 ug/l; final concentration: max. 2,3 ug/l
cis 1,2-dichloro ethane: initial concentration: max. 280 ug/l; final concentration: max. 12 ug/l
Vinyl chloride: initial concentration: max. 2.3; final concentration: max. 2.2 ug/l
Active remediation phase: February 2004 unntill Juni 2004
Passive remediation phase: The passive phase is completed. Realization period: Juni 2004 untill November 2008

Case detailed information

General information
Project name: Almelo: CVOC** 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: Almelo, Overijssel (future) use of location: Industrial Built-up location during the active remediation phase?: yes
Technique
Explanation technique: Also other remediation techniques applied?: Excavation of soil After care needed?: Monitoring CVOC decay and decay conditions Rationale for the chosen technique:
Contamination
Treated contaminant(s): CVOC Contaminant phase: Groundwater Size contamination: 2000 m2 Depth contamination: untill 10 m below surface  
Soil
Soil type: Mainly sand Saturated/unsaturated zone?: Saturated Zone Permeability: > 0,1 m/day Flow velocity or gradient groundwater:
Result, duration, expense
Remediation goal: Stabile end situation Remediation goal achieved?: Yes Initial and final concentration and load removal: Tetrachloro-ethene initial concentration: max. 15000 ug/l; final concentration: max. 2 ug/l Trichloro-ethene: initial concentration: max. 12 ug/l; final concentration: max. 2,3 ug/l cis 1,2-dichloro ethane: initial concentration: max. 280 ug/l; final concentration: max. 12 ug/l Vinyl chloride: initial concentration: max. 2.3; final concentration: max. 2.2 ug/l Active remediation phase: February 2004 unntill Juni 2004 Passive remediation phase: The passive phase is completed. Realization period: Juni 2004 untill November 2008 Total costs passive/after care phase: € 130000,- Total costs active phase: € 130000,-
Stakeholders
Problem owner: Contractor: Heijmans Infra Techniek Remediation plan: Amended remediation plan by Heijmans Infra Techniek Remediation research: Competent authority: Contact information stake holders:
Additional information
Lessons learned:
Related techniques and HIP-pilots