Events

Up to 6 CPD Points

Day 1, 27 March 2025

8.30am – 9.00am:  Registration Opens

9.00am – 9.05am: Introduction
Matthew Potter, CEO, ALGA

9.05am – 9.10am: Acknowledgement of Country

9.10am – 9.15am: ALS, Gold Sponsor
Scott James, State Manager, NSW and NT, Environmental

9.15am – 10.00am: Keynote – Ground Gas, Radon and Vapour Intrusion – Convergence?
Steve Wilson, Technical Director, The Environmental Protection Group

10.00am – 10.30am: Morning Tea Networking

Session 1: Planning and Measurement – Chaired by Nick Simmons, Australian Environmental Auditors & Luke Finley, Elgin Associates

10.30am – 10.45am: Development and Use of Innovative Ground Gas Assessment Methods – Gas Pump & Recovery Test and Gas Profiling Test
Matt Welsh, Technical Director – Contamination & Environmental Management, GHD Pty Ltd

10.45am – 11.00am: Ground Gas Reassessment – The Good, The Bad, and The Ugly
Molly Brown, Senior Environmental Scientist, WSP

11.00am – 11.15am: Continuous Ground Gas Monitoring Methods and Technologies: A Critical Review
Richard Campbell, Managing Director, HydroTerra 

11.15am – 11.30am: Soil Headspace Analysis vs Traditional Soil Extraction Analysis for Chlorinated Hydrocarbon Investigations
Dane Egelton, Senior Environmental Scientist, CSI Australia

11.30am – 11.45am: Collection of High-Definition Screening Data to Streamline the Evaluation of Subslab Conditions at Vapor Intrusion Sites – Two Case Studies
Craig Cox, President, Cox-Colvin & Associates, Inc.
Laurie Chilcote, Vice President, Cox-Colvin & Associates, Inc. (co-Author)

11.45am – 12.05pm: Questions and Answers
All Speakers from Session 1

12.05pm – 1.00pm: Lunch Networking

Session 2: Risk Considerations – Chaired by Daniel Hodges, Geosyntec Consultants Pty Ltd

1.00pm – 1.30pm: Keynote – Managing risk from vapour intrusion – considerations on different needs of different risk profiles
Dr Jen Martin, Deputy Chief Environmental Scientist, EPA Victoria

1.30pm – 1.45pm: What Works and What Doesn’t – The SA EPA Experience
Melinda Morris, Principal Adviser, South Australian EPA

1.45pm – 2.00pm: Development of the Gas Generation Potential framework for Auckland Council’s Closed Landfills
Jo Ferry, Principal Environmental Consultant, Tonkin + Taylor Limited

2.00pm – 2.15pm: The Use of Henry’s Law Calculations and Gas Ternary Plots to Understand Multiple Sources of Methane and to Enable Remediation Validation
Scott Robinson, Technical Director, GHD

2.15pm – 2.30pm: A Case for Hydrogen Sulfide
Darren Hanvey, Senior Principal – Environmental Engineer, Stantec

2.30pm – 2.45pm: Future-Proofing Your Soil Vapour Dataset
Victoria Lazenby, Director, Terravale

2.45pm – 3.05pm: Questions and Answers
All Speakers from Session 2

3.05pm – 3.30pm: Afternoon Tea Networking

Session 3: Remediation and Mitigation – Samuel Willis, Alliance Geotechnical & Environmental Solutions

3.30pm – 3.45pm: Applying Models to Vapour Mitigation System Design – The Good the OK and the Ugly
Kristi Hanson, Senior Principal Risk Assessor and Victorian Environmental Auditor, Senversa Pty Ltd

3.45pm – 4.00pm: Design and Verification of Passive Ground Gas Protection System, Western Sydney, NSW Australia
Matthew Rendell, Principal, Geosyntec Consultants
Edward Munnings, Senior Environmental Scientist, Geosyntec Consultants (co-Author)

4.00pm – 4.15pm: Retrofitting Vapour Mitigation Systems to Older Houses – Lessons Learnt
David Butterfield, Environmental Engineer, BlueSphere

4.15pm – 5.00pm: Lifecycle Case Study: Retrofitting a Vapour Mitigation System to an Occupied Basement Car Park to ensure Acceptable Human Health Risks – The Complex Task that was Burnley Street, Richmond – A risk assessment, contracting and auditing perspective.
Peter Mirkov, Managing Director, Peraco (Auditor Perspective)
Ivan Devcic, Managing Director & Principal, Coover Pty ltd (Contractor Perspective)
Ruth Jarman, Senior Consultant, enRiskS (Risk Assessment Perspective)

5.00pm – 5.20pm: Questions and Answers
All Speakers from Session 3

5.20pm: Conclusion
Daniel Hodges, Geosyntec Consultants Pty Ltd

5.30pm – 7.30pm: Networking Drinks at Prince Alfred Rooftop and Bar

Up to 7 CPD Points

Day 2, 28 March 2025

8.00am: Registration Opens

8.30am: Training Session Commences

Optional Technical Training Session

The Gas and Vapour Symposium will be followed by a half-day technical training session, on the latest field techniques and laboratory measurements. Dane Egleton from CSI Australia and Kristian Hansen from SGS will provide hands-on training using field equipment and describe the common pitfalls encountered when sampling ground gas and vapour.

The half-day will include a brief theory about the principles of VOC vapour migration in the subsurface and how it differs from landfill gas migration and sources.

The practical component will include:

• Vapour Intrusion Assessment Practical with demo gear
• From the beginning through to installation, how-to and lessons learned, including:
  • Materials Used
  • Types of installations
  • Purging
  • Sample Methods Active and Passive
  • Field equipment PID, gas monitors
  • Leak testing
  • Soil gas, indoor air, flux chambers, crawl space/ceiling space, service pits

• Landfill gas Assessment Theory and Practical with demo gear.
  • Well installation basics
  • Surface completion and sample fittings
  • Field equipment Options
  • Continuous monitoring options
  • Passive Flux Chamber method

10.00am – 10.30am: Morning Tea Networking

12.30: Event Concludes