Who we are
Yellow Tree is passionate about the environment and about serving others. We are a team of Chemical Engineers that specialise in Carbon Accounting, Air Quality Compliance, and Emissions Measurement, and we love our work.
Carbon Advisory and Air Quality Compliance

Riyaal Cerpath
Air Quality Engineer
BSc Eng: Chemical Engineering
Riyaal brings a wealth of knowledge to the Advisory department after being a field scientist for many years. He is always first to put his hand up for the odd jobs and to go the extra mile for his teammates.

Candice Little
Air Quality Engineer
BEng: Chemical
Candice brings her fresh energy to the Advisory team with passion for the environment and enthusiasm to explore engineering challenges in the carbon space.

Sanjana Sevprasad
Air Quality Engineer
BSc Eng: Chemical Engineering
Sanjana’s knowledge of chemical engineering aids in her excellent work in air quality consulting. When she’s not mulling over calculations, she enjoys cooking and baking for her friends and family.

Sasha Kasperski
Business Development
MEng: Chemical Engineering
Sasha has stepped up to take charge of the Advisory department with kindness and care, while making sure work is done to the highest level of accuracy. She leads with humility and integrity.

Bokani Moyo
Air Quality Intern
MScEng: Chemical Engineering
Bokani brings so much enthusiasm to his work and is a man of great integrity. He always strives to deliver his very best and won’t settle for less.

Denham Lailvaux
Air Quality Engineer
BEng: Chemical Engineering
Denham is fastidious and hard working. Supporting Riyaal in helping our clients meet their greenhouse gas submission and carbon tax deadlines, we are thankful to have him in the team! His previous work on the mines has equipped him with superb knowledge.
Emissions Measurement

Aphiwe Gugushe
Operations Manager
MSc: Chemistry
Aphiwe’s enigmatic nature and productive work ethic ensure that our internal Yellow Tree laboratory operates efficiently and at the highest accuracy. We are delighted to have Aphiwe in our precious team.

Athandile Meji
Lab Technician
AdvDip: Chemical Engineering
Athandile is a steady and consistent scientist who is always happy to serve, and is working his way up the business through applying himself. He runs the internal lab and manages external laboratories in SA and the UK.

Maitaishe Svotwa
Air Quality Engineer
Maitaishe is a diligent, intelligent, hard-working teammate who is taking on new challenges by leading the NAEIS reporting team. She is always willing and helpful, and quietly gets things done with excellent speed and accuracy.

Ray Slinger
Business Development
BSc (Hons): Environmental Science
Ray is effervescently joyful. His excellent communication skills, warmth and professionalism make him a Yellow Tree ambassador of whom we are very proud. They say that one should lead with the heart of a servant, and serve with the heart of a king. That is Ray!

Sonali Needhi
Air Quality Engineer
BSc Eng: Chemical Engineering
Sonali joined us in the report writing department and has done well to keep up with the demands of data processing. When she’s not sifting through numbers, she’s a passionate foodie who never eats at the same restaurant twice.

Akhanani Shayi
Operations Administrator
With her bright energy, Akhanani has been a great asset to the team in keeping the operations running smoothly. Her ability to get things done is impressive!

Sakhumzi Baliso
Air Quality Engineer
NDip: Analytical Chemistry
Sakie is one of our best, having years of emissions sampling and laboratory experience under his belt. He now lends his expertise to matters of compliance, especially regarding NAEIS submissions. He always offers great service to our clients and is a joy to work with.
Field Scientists

Xolani Gajule
Field Scientist & Trainer
AdvDip: Chemical Engineering
Xolani’s tenacious spirit means no problem is too challenging for him. He takes great pride in the accuracy and orderliness of his work. We’re proud of the way he has stepped up to lead the Johannesburg team with compassion and confidence.

Mandisi Tomose
Field Scientist & Trainer
AdvDip: Chemical Engineering
Mandisi is a humble, hard-working, and smart young man. He is the most teachable person we’ve ever known, with an insatiable appetite for knowledge. He imparts those skills to our team by being an excellent trainer.

Bevan Uithaler
Scientist and Equipment Technician
NDip: Chemical Engineering
Bevan has grown in leaps and bounds since joining our team. From field scientist to equipment technician, he is always willing to step up when needed, especially to help out a teammate.

Sibusiso Mahlangu
Junior Scientist
NDip: Chemical Engineering
Sibu’s warm and sincere nature makes him a joy to work with. He communicates with clarity and kindness, and people always leave a conversation with him feeling heard and valued. He is a true asset to the Yellow Tree family.
Administration

Sean Charteris
Managing Director
BSc Eng: Chemical Engineering
Sean is a Chemical Engineer with a wealth of experience in combustion, energy generation and industrial emissions. He is passionate about the environment and loves people.

Claire Naude
Financial Administrator
BEd: Foundation Phase
Claire is friendly, dependable, and wonderfully organised. She runs the administration at Yellow Tree with seamless efficiency and brings joy and warmth to all those who engage with her.

Caitlin Morris
Managing Director
BSc: Chemical Engineering & LLM
Cait is a superb chemical engineer! She is incredibly bright and her work is flawlessly accurate. Cait is pioneering new developments in the field of low carbon energy production.