Land contamination studies are required for brownfield sites, often
to satisfy due diligence or in response to urban expansion and
David. Green is a land contamination specialist and has worked in
many aspects of contamination assessment and soil management,
beginning in 1988. As a local authority inspector Dr Green
began in this field of competence through soil
contamination assessment at derelict industrial locations in
inner London. These areas were proposed for residential
redevelopment. David Gtreen planned and supervised the review
of the historical uses of the sites and designed soil sampling
plans, analysis and monitoring techniques for heavy metals and organic
contaminants. He has since planned conducted and supervised such
studies to best international standards on numerous projects in UK,
Hong Kong and Asia.
Soil or land contamination studies generally begin with a baseline historical review of past land uses, groundwater use in the area and the underlying
geology. Available data on existing groundwater should also be
reviewed. Criteria for assessment and
remediation are chosen to respond to accepted local and
international standards, future land uses, local groundwater use and
possible exposure of future land users.
Based on the former land use and the site area two comlimentary
study approaches can be taken. Where detailed evidence and plans
are available, it is often possible to focus on the location of
past industrial processes and sample at potential hot spots of chemical contamination. E.g. where the locations of oil storage
tanks or coal stockpiles is known, sampling might focus on the analysis
for petroleum based and organic compounds such as benzene and
phenolics. Where the location of processes cannot be pinpointed or
where spillage might be more likely, such as for wet processing in a
former tannery site, sampling for indicator chemicals such as chromium
would be based on a grid type aproach with the grid size based on the
site conditions and dimentions ofthe site.
Results will be compiled in a Contamination Assessment Report with recommendations for further samopling and a Remediation Plan will be compiled to guide the clean up of the site where
necessary. Post remediation the results of decontamination processes
will also be reported to confirm the acceptability of the site for
future land ises.
David Green’s portfolio of land contamination studies since 1990 is
extensive. He has directed and managed numerous land
contamination investigations and prepared remediation action plans for
decontamination of major industrial locations such as municipal
incnerators, power stations, gas works, steel works, shipyards
David Green's qualifications relevant to land contamination asseesment are listed below.
• Advanced course in Toxicology, St. Bartholomew’s Hospital, London 1987/88.
• Founding Fellow of the HK Institute of Environmental Impact Assessment, Hong Kong 1997.
• Fellow Royal Society of Health 1986.
• Member of British Toxicology Society 1988.
• Member of Royal Society of Chemistry, Toxicology Group 1989 - 1993.
• Associate Member Institute of Environmental Health 1990.
• IEMA Approve Advanced EMS Auditing Course (Hong Kong) 2001.
• Associate of International Institute of Risk and Safety Management (2002)
• Bachelor of Science (Honours) Applied Biology, CNAA 1978
• Doctor of Philosophy PhD Ecological and Toxicological Studies, CNAA 1984
A short list of major relevant assignment is provided below for quick reference.
Kwai Ching Incinerator Plant - Contaminated Land Assessment
- Kennedy Town Incinerator and Abattoir - Contaminated Land
- Tsing Yi Power Station, HK, - Preliminar advice on contamination
Bangkok Metropolitan Electricity
Authority - Environmental & Safety Issues /
World Bank - PCB and capacitor storage - Investigation
- Demolition of Cheung Sha Wan Shipyards - Soil Contamination Assessment
Kong and China Gas Co.
- Demolition of Ma Tau Kok Gas South Works - Soil Contamination
Hong Kong Oxygen Junk
- Sol Contamination Assessment
- Phase 1 Environmental Audits in Asia - Review of potential for
SWIRE Properties Swire Properties,
H.K.. - Demolition of Aik San and Melbourne
Building - Soil Contamination Assessmenr design