Meet the NZTIWF Board


Jason Dinsdale


Originally from Whangarei I grew up in the Far North in a rural background.

I started my career as a chemistry lab technician before moving into factory roles and operating processing plants. I have spent approximately 20 years working for large wet industries including Dairy, Edible Oils and Vegetable processing plants (amongst others) in a range roles. In addition to this I have also served as a union rep and have spent many years involved in on site Health and Safety systems and committees.

In 2004 I relocated to Timaru and worked for several local companies before taking on the Trade Waste Officers role at Timaru District Council in February 2014. This role is so varied dealing with everything from resource and Industrial/commercial discharge compliance, Tankered Waste disposals, Algal monitoring for aerobic wastewater ponds to building consent conditions and requirements for trade waste premises.

As well as the Vice President I also hold a position on the Liquid Waste Code Compliancy Council and have previously spent 3 years as the Trade Waste Officers Representative (until April 2018). As VP I also sit on several of the NZTIWF Subgroups including: The conference group, the trade waste officers group and the Technical group.


Jennifer Leadley


My first job after university was at Tiwai Point Aluminum smelter in the Environmental Monitoring Division, followed by an Environmental Monitoring role in Massachusetts, USA. I spent the next 15 years in management positions for a Christchurch Liquid and Hazardous Waste Collection and Treatment company, and became involved in the NZ Liquid Waste industry.

I have been involved with WasteTRACK since its beginnings in 2005, as the company I worked for was an early trialist. I continued my involvement when I joined Liquid Systems in 2007, implementing and managing WasteTRACK. I am a trained Systems Auditor and since 2007 have been the Auditor for the Liquid & Hazardous Wastes Code Compliancy program, established by the Liquid and Hazardous Waste Operators Certification Council.

My keen interest in workplace Health and Safety lead to recently completing papers towards the National Diploma in Occupational Health and Safety. I am NZ Girl Guiding Regional Girl Opportunity South Island Coordinator, a role coordinating a range of events and opportunities for girls. I joined the NZTIWF committee in 2017 and look forward to helping the organization grow and achieve its goals.


Bruce Holland

Board Member and LHWO Representative

I have been involved in the Waste Industry for 35 years and managed the largest Liquid Waste company in NZ for 3 years. I have had my own business since 1989 growing it from sole operator to staff of 35.

I am an inaugural member of the LHWOG, the only one remaining of the original 12 and served as Chair for past 10 years. My background is Mechanical Engineering background and I have lived in Auckland for 42 years.


Geoff Young

Immediate Past President & External Liaison

Coming from an operational background, I have been involved in Environmental Management for the last 25 years. I was the very first Environmental Officer in New Zealand Dairy Group back in 1991, one of the cooperatives that now make up Fonterra, and I was involved in major redevelopment of the Te Rapa site over the following 8 years.

I was one of the founding partners of BPO Ltd, a reference to the Best Practicable Option clause from the original Resource Management Act. Today BPO Ltd serves a number of functions, from temporary and permanent water monitoring installations to waste water pre-treatment and waste water management systems not to mention cleaner production systems.

Advising primary processing industries on water measurement, management techniques and raw material utilisation, I have been lucky enough to work in a number of countries over the years including Venezuela, Chile, USA, Australia and of course, here at home. These days I am the Chief Technical Officer of BPO Ltd, to a wonderful team who bring different qualities and skill sets to the table often to cover for my shortcomings! This team have also made it possible for me to undertake the role of National President of the New Zealand Trade and Industrial Waters Forum since 2011.


Tara Okan

Science Advisor / Archivist 

Tara is a water quality scientist and is responsible for safeguarding all aspects of water quality through scientific analysis and the setting of targets and standards in response to specific legislation.

He specializes in comparing test results with these standards, investigate shortfalls and takes action to remedy problems.


Richard Manson

Board Member

I have been involved to the water and drainage Industry for about 42 years. I am currently working for Wellington Water Ltd working on Trade Waste auditing and trouble shooting in Wellington City and Porirua City areas.

I previously worked with Hutt City Council Trade Waste and have been involved with plumbing, drainage and pipeline CCTV projects in the past.


Mike Sahayam


I have a science background, studied chemistry at Massey University and later working at the university for 15 years as a technician and tutor in the Department of Technology and Engineering. I was involved in the wastewater chemistry and microbiology programs as well as teaching meat microbiology and meat chemistry to meat industry leaders.

My own research interest was looking at how drinking moderate amounts of red wine had some health benefits and which NZ wines were best for this reason. For the last 10 years I have worked at Palmerston North City Council as a Trade waste Officer. My role has involved not only monitoring and managing incoming Trade waste, but also working with industries to improve the quality of effluent they discharge.

As well is Trade waste I also manage all the wastewater analytical data, including operational and compliance data.


Richard Rollins

Board Member and Industry Representative

I work at WSP Opus in New Plymouth and have over 25 years of experience in of civil and environmental process engineering at industrial facilities including oil and gas, semiconductor, pharmaceutical, chemical, and food processing plants. My work includes management of processing and water projects in industrial and public works settings with responsibility for the design and installation of chemical piping, hazardous material and waste storage systems.

I conduct wastewater treatment and network investigations, plan and execute water supply, stormwater and wastewater projects. I have also worked as a trade waste investigator in Auckland and New Plymouth.