Key Personnel

Dr Ben Dearman

Managing Director

Ben has more than 20 years’ experience in the contaminated site and waste management industries. Ben combines both technical and commercial aspects to deliver high quality outcomes for clients.

Jack Horan


Jack has over 15 years’ experience working in the site contamination and waste management industries. Jack is a certified Site Contamination Specialist under the EIANZ CEnvP scheme, reflecting the high level of technical expertise coupled with industry based experience.

Mitchel Browne

Senior Environmental Scientist

Mitchell has over 10 years’ experience working in site contamination, waste management and mining industries. Mitchell has experience includes technical requirements of projects whilst being aware of the cost implications to the client and the project management lifecycle including, bid management and tender writing, planning, procurement, execution and delivery.

Dr Brett Thomas

Senior Environmental Scientist

Brett has more than 15 years’ experience in the environmental and contaminated land sectors providing practical solutions to a wide range of public and private sector clients. He has managed an array of projects relating to contaminated sites, acidic and metalliferous drainage, dredging, landfill gas (LFG), groundwater and surface water assessments, management and remediation. His PhD was in acid sulphate soil management, which underpins Brett’s work across the broader environmental and remediation fields.

Adam Williams

Senior Engineer

Adam is a Senior Engineer with over 9 years’ experience in the waste and civil engineering sectors. He has extensive experience in the planning, design, operations and construction for a variety of waste and civil infrastructure projects. Adam’s expertise includes resource recovery centre and landfill planning, design, operations and construction, project management, construction quality assurance, contract superintendency, civil engineering design and stormwater management. Adam manages the Engineering Unit of the DBD Environmental business and provides practical technical expertise to the team.

Dr Mathu Indren

Environmental Engineer

Mathu is an environmental engineer with experience in the fields of organic waste management, contaminated site assessment and environmental impact assessments. Mathu has worked on a variety of engineering projects in Australia, Mongolia and Nepal and has authored two internationally peer-reviewed journal articles. His PhD was in organic waste management using a combination of biological processing (anaerobic digestion) and thermochemical processing (gasification / pyrolysis).

Luke Silvester

Environmental Scientist

Luke Silvester has more than 7 years’ working in the contaminated site and waste management industries as a highly skilled field technician. Luke has worked across Australia on both contaminated sites and waste management facilities and combines both technical understanding with hands on practicality.