Contaminated Land
JBS&G is an industry leader in dealing with all facets of Contaminated Land.
Groundwater Remediation
Experts in 'immediate response' groundwater remediation measures.
Environmental Impact Assessment
JBS&G specialises in environmental, social and economic impact assessments for local, state or natio...
Auditing and Compliance
Accredited in-house auditors covering all applicable state and territory auditor schemes.
Hygiene and Hazardous Materials
If you do a job, do it properly.
Due Diligence and Liability
Rapid response with pragmatic, commercial, expert advice tailored to address the level of risk and y...
Provides strategic advisory services to organisations delivering projects in sensitive social and environmental contexts.


Greg Dasey

Dr Greg Dasey is a Principal Hydrogeologist based in JBS&G’s Sydney office.Greg has over 20 years’ experience in the contaminated land industry.

As a Principal Hydrogeologist, Greg has had the opportunity to work on a range of sites with water quality issues. Contamination issues have included chlorinated hydrocarbons, heavy metals (hexavalent chromium, arsenic, manganese), nutrients (nitrate, ammonia) and a range of other contaminants (PFAS, perchlorate, cyanide, TPH/BTEX). Greg also has extensive experience (more than 30 sites) assessing and preparing pre-purchase environmental/contamination due diligence reports. Greg has provided expert witness testimony in a number of cases involving chlorinated hydrocarbon contamination and where groundwater expertise related to inorganic contamination was required.

Areas of Expertise

  • Contaminated land assessment/remediation
  • Contaminated land risk assessment
  • Environmental Due Diligence
  • Landfill assessment
  • Support to litigation proceedings
  • Environmental compliance