Rephonic
Artwork for Below the Surface
Environmental Consulting
PFAS
Acid Sulfate Soils
Asbestos
Environmental Law
Environmental Health
Environmental Regulation
EPA
Electric Vehicles
New South Wales
Contaminated Land
Site Assessment
Environmental Management
Contaminated Sites
Remediation Action Plans
Preliminary Site Assessment
Detailed Site Investigation
Contamination
Environmental Assessments
Soil Management

Casual chats between an Austrian and Australian on environmental topics that usually don't get talked about openly. Hosts Gunnar Haid and James Hammond set out to provide a light-hearted and thought-provoking look into Contaminated Land, Resource Recovery, Ecology and general environmental issues in Australia, in particular NSW. They use their experience and industry connections to talk about subj... more

PublishesMonthlyEpisodes44Founded2 years ago
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Artwork for Below the Surface

Latest Episodes

Hammond relives his time as a representative for Australia in international biodiversity negotiations at COP13 of the Convention on Biological Diversity. But before that a few updates, a hint for auditors and Gunnar almost completely loses it while t... more

YouTube

Microplastics: The Invisible Problem (or is it?)

Brooke Kelly from Reditus joins Gunnar and James to unpack microplastics. From penguin carcasses and seal scat (that's science code for poo) to human exposure, they explore where microplastics come fr... more

YouTube

Artificial intelligence has gone from curiosity to daily tool almost overnight. 

In this episode, Gunnar and James sit down with AI consultant Alex Rankin who spent over 25 years in senior roles across the Australian Public Service before turning he... more

YouTube

If you've ever stared at a lab result that exceeds your NEPM HIL and wondered "okay, but what does this actually mean?". This one's for you.

Gunnar and James sit down with Dr Kylie Dodd, environmental toxicologist and risk assessor at GHD, to get in... more

YouTube

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Recent Guests

Brooke Kelly
Environmental scientist at Reditus
Reditus
Episode: #42 The Basics: Microplastics
Alex Rankin
AI consultant specializing in environmental applications
Driftwood Crew Consulting
Episode: #41 The AI Revolution
Kylie Dodd
Risk assessor at GHD, environmental toxicology and risk assessment specialist
GHD, Australia
Episode: #40 The Risk Assessment
Sue-Ellen Dear
Expert on Acid Sulfate Soils and co-author of the Queensland Acid Sulfate Soil Guidelines.
Queensland Government
Episode: #39 The Big ASS Questions
Kristie Williams
Expert on Acid Sulfate Soils management and co-author of the Queensland Acid Sulfate Soil Guidelines.
Queensland Government
Episode: #39 The Big ASS Questions
Angus McElnea
Co-author of the Queensland Acid Sulfate Soil Guidelines.
Queensland Government
Episode: #39 The Big ASS Questions
Professor Albert Juhasz
A research professor at the Futures Industries Institute, expert on bioavailability and human health exposure.
Futures Industries Institute, University of South Australia
Episode: #38 The Bioavailability
Martyn Kirk
Professor of Epidemiology at the Australian National University.
Australian National University
Episode: #35 The PFAS Heath Advice
Claire Hooker
Specialist in values and ethics in arts and health and expert in risk communication.
Episode: #35 The PFAS Heath Advice

Hosts

Gunnar Haid
Host with a background in environmental consulting and policy discussions; co-creator of the show.
James Hammond
Co-host focusing on environmental consulting topics and industry insights.

Reviews

4.6 out of 5 stars from 19 ratings
  • Bandaid-ripping conversions for consultant, government and industry

    Wow - thanks for being really brave James and Gunnar and taking the time to record this series. These are important bandaid-ripping conversions on complex environmental policy and assessment topics. The guest speakers are super interesting too.

    Apple Podcasts
    5
    Lost_in_the_burbs
    Australiaa year ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listeners appreciate the candid conversations about policy and practice.
Content is practical and hands-on, not just theory.
Quality guest lineups earn credibility for listeners and sponsors.

Chart Rankings

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Talking Points

Recent interactions between the hosts and their guests.

#41 The AI Revolution
Q: What is AI and how do LLMs fit into it?
AI is a set of computer tools trained on large data to recognize patterns; LLMs predict language and are good for summarizing, drafting, and analyzing documents, while other models handle vision, forecasting, etc.
#39 The Big ASS Questions
Q: Can you explain the concept of acid neutralizing capacity?
Acid neutralizing capacity refers to the ability of soil to deal with acidity, which can come from various sources, including calcium carbonate shells and other materials.
#39 The Big ASS Questions
Q: What makes Acid Sulfate Soils special compared to other soils?
Acid Sulfate Soils contain iron sulfide minerals, most commonly pyrite, which when exposed to oxygen can produce sulfuric acid, leading to significant environmental issues.
#38 The Bioavailability
Q: When does it make sense to look at bioavailability as part of a risk assessment?
If there are exposure parameters that can be modified suitably or if the history of the site indicates low bioavailability.
#38 The Bioavailability
Q: Could you introduce yourself to our listeners, please, Albert?
I'm a research professor at the Future Industries Institute at the University of South Australia, focusing on understanding how much contaminated soil is absorbed in the human body.

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Frequently Asked Questions About Below the Surface

What is Below the Surface about and what kind of topics does it cover?

A practical, practitioner-focused show that centers environmental risk, contamination, and policy in Australia, with a strong emphasis on how theory translates into real-world projects. Across episodes, listeners get deep dives into risk assessment methods, management of acid sulfate soils, bioavailability concepts, stormwater and waste management, asbestos regulations, and regulatory EPA perspectives. The tone blends technical detail with candid industry critique and practical takeaways for consultants, regulators, and business leaders who navigate contaminated land, environmental health, and sustainability in NSW and beyond. A notable strength is the guest mix—across episodes experts, regulators, and industry practitioners share actionabl... more

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1. Australian Property Podcast
2. Australian Finance Podcast
3. ABC News Daily
4. Mamamia Out Loud
5. Democracy Sausage with Mark Kenny

How many episodes of Below the Surface are there?

Below the Surface launched 2 years ago and published 44 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Below the Surface?

Recent guests on Below the Surface include:

1. Brooke Kelly
2. Alex Rankin
3. Kylie Dodd
4. Sue-Ellen Dear
5. Kristie Williams
6. Angus McElnea
7. Professor Albert Juhasz
8. Martyn Kirk

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