Rephonic
Artwork for Below the Surface
Environmental Consulting
Acid Sulfate Soils
Site Assessment
Environmental Regulation
Environmental Law
Soil Management
EPA
Contaminated Land
Women In STEM
Detailed Site Investigation
Remediation Action Plans
Contamination
Preliminary Site Assessment
Environmental Assessments
Environmental Guidelines
New South Wales
Contaminated Sites
GHD
EPA Auditing
PFAS

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

PublishesMonthlyEpisodes40Founded2 years ago
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Natural SciencesScienceEarth Sciences

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Artwork for Below the Surface

Latest Episodes

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

A deeper dive into Acid Sulfate Soils. In a slightly QLD centric episode, Gunnar and James are joined by all three main authors of the QLD ASS Management Guidelines, widely regarded as the best ASS guidelines in the world. 

Sue-Ellen Dear is a Senio... more

YouTube

How much of any given contaminant is actually taken up into human bodies?

If we think about it, that is one of the single most important things to consider as an environmental consultant when reporting on a site's contamination status, yet it is not... more

YouTube

The 2025 Year in Review (That Wasn’t Supposed to Happen)

What started as a neat 15-minute intro quietly turned into a full end-of-year wrap-up. Classic Below the Surface. Gunnar and James get side-tracked almost immediately and eventually realise th... more

YouTube

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Recent Guests

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
James K.
Resident expert on waste classification at 4Pillars
4Pillars Environmental Consulting
Episode: #33 The Waste Class Blues
Tony Chappel
CEO of the NSW EPA with a background in law, finance, and environmental science.
NSW EPA
Episode: #32 The EPA CEO
Linda Apthorpe
Occupational Hygienist with over 30 years of experience; lecturer at the University of Wollongong.
Hibbs and Associates
Episode: #29 The New AS5370 Standard

Hosts

Gunnar Haid
Co-host known for engaging discussions on environmental topics, often drawing from personal experiences and professional affiliations.
James Hammond
Co-host with a knack for simplifying complex environmental issues, which adds a relatable touch to the discussions.

Reviews

4.6 out of 5 stars from 18 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.

The show is praised for its informative content and the inclusion of diverse guest perspectives.
Reviewers note the importance of the topics discussed, particularly in relation to current environmental challenges.
Listeners appreciate the engaging and often humorous approach to serious environmental issues.

Chart Rankings

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Talking Points

Recent interactions between the hosts and their guests.

#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.
#33 The Waste Class Blues
Q: What common mistakes do you see with waste classification reports?
A frequent error is taking too few samples when dealing with small amounts of waste, which does not provide a representative understanding of material quality.

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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?

The discussions abound with light-hearted yet enlightening exchanges between two hosts who bring diverse experiences and backgrounds. Topics predominantly cover environmental issues that seldom receive adequate attention, particularly in Australia and New South Wales. Episodes touch on various important subjects, including contaminated land, resource recovery, and ecology, creating a framework for listeners to understand complex environmental concepts through engaging conversations. The hosts challenge conventional narratives while addressing industry inefficiencies, exploring new regulatory frameworks, and emphasizing environmental sustainability in approachable terms. Notably, listeners earn CPD points, adding an educational value to the ... more

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3. Politics Now
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5. The Howie Games

How many episodes of Below the Surface are there?

Below the Surface launched 2 years ago and published 40 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. Sue-Ellen Dear
2. Kristie Williams
3. Angus McElnea
4. Professor Albert Juhasz
5. Martyn Kirk
6. Claire Hooker
7. James K.
8. Tony Chappel

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