Stephenson Environmental Management Australia (SEMA) services

Stack and source emmission. CEMS RATA audits. Ambient and fugitive emissions. Indoor air quality. Workplace and OHS monitoring.

Integrated audits and troubleshooting of emissions from process to receptor. Pollution control technology design and suitability assessments. We can advise on what pollution control devices to use.

Commissioning. Research and Development. Carbon and NPI assessment. Environment Pollution Licence compliance tests.

In-house NATA accredited odour laboratory. In-house NATA accredited gravimetric laboratory. We are independent and not aligned with other NATA accredited laboratories so use the best laboratories for specific analysis.

Predictive Dispersion Modelling: AUSPLUME, AERMOD and CALPUFF.

Preparation of environmental documentation for audits, impact statements, DAs, councils and state government licences.

Stephenson Environmental has a vast range of experience in the design, development and implementation of odour controls.

We analyse odour samples from all over Australia, within 30 hours in accordance with AS4323.3 & 4, to internationally recognised odour units (ou) in our ORLA Olfactometry Laboratory.

Our mobile laboratories can continuously monitor: Oxygen, Carbon monoxide, Carbon dioxide, Oxides of nitrogen, Sulphur dioxide, Total hydrocarbons, Ammonia, Hydrogen sulphide, Outdoor air temperature, Wind speed, Wind direction, Global short wave radiation, Net radiation.