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Singapore’s first in-situ groundwater pilot and full-scale Site Remediation

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ESC conducted a detailed Environmental Site Assessment in 2009 followed by Singapore’s first in-situ groundwater pilot and full-scale Site Remediation using air sparging and multi-phase extraction technology.

About the Project

The client manufactures and distributes paper and industrial packaging in countries including China, Singapore and Malaysia.  ESC was retained by the client to undertake the remediation of groundwater at a manufacturing facility in Tuas, Singapore. 

Regular independent validation and analysis were performed and soil and groundwater regulations were met after completion of the full-scale remediation in 2016.

Our Approach

ESC conducted a series of environmental site assessments and a groundwater remediation pilot study at the site followed by full-scale site remediation. The remediation system was installed using remedial design services and remediation technologies.

ESC designed the remediation system to address the predominantly dissolved plume of ethyl benzene and xylenes in both soil and groundwater through a combination of air sparging and MPE technology. 

The remediation system comprised of ten large diameter extraction wells, seven air sparging wells, a water treatment system (including settling tanks, a sparging unit and a low-profile air stripping tower), a high-pressure multi-phase vapor extraction system, an infiltration trench designed to deliver iron-free and hydrocarbon acceptable water back to the groundwater and a network of groundwater monitoring wells which were used to monitor system performance.


Prior to and upon installation and commissioning of the remediation system, environmental monitoring was conducted including baseline assessment, pre-commissioning groundwater sampling, pre-validation final validation of remediation followed by a full technical report of the remediation process and results at the end of the remediation program. 

The foundation of success for this project was a detailed understanding of the site conditions which resulted in selection of the most appropriate technology to effectively remediate the site.

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ESC thinks out of the box. They can come up with conventional solutions. But they are better in providing a solution fit for the company - one that feeds your organization. 

ESC is focused on helping us solve our problem. Even if it means sometimes going out of the scope of what was originally agreed upon. So as a client, I can focus all my efforts on solving the problem.

William Wong

Head of Technical, Chemical Specialties

We had no experience at first in dealing with Safety Cases and dealing with authority. When we have an issue, we ask ESC. Just one look at it, ESC already knows what to do. They  advise us accordingly and professionally and tell us what to do what to follow and to know. Our partnership with them produced good results.

Mohamed Suhaimi

SHEQ Manager, Banyan Caverns

I do appreciate the times when ESC was there to help with an open channel and service-oriented communication. Ease of communication is what separates ESC from other consultants.

Mohamed Fareed

Regional Environmental Health and Safety Manager, AirTrunk

We appointed ESC to review all historical data related to our site. They demonstrated a very high level of technical expertise and understanding of the JTC EBS Guidelines which proved invaluable in our response to JTC. ESC was extremely responsive and we are very satisfied with the outcome.

Charles Madhavan

Director, Mid-Continent Equipment Group

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