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Air Quality - Monitoring

Genera utilise best practice air quality monitoring systems to collect, analyse and report on air quality during and after fumigation activities. To monitor public and worker safety, Genera comply with, and report on, national air quality standards set by the Environmental Protection Agency (EPA). In this context air quality is measured in parts per million (ppm) of Total Volatile Organic Compounds (*TVOCs). Methyl bromide is one of many TVOCs and therefore makes up a proportion of the TVOC measurement. 

In line with EPA monitoring and reporting standards, Genera measure air quality at the Port Boundary (to monitor air quality for the Public) and within the Port (to monitor air quality for Port workers).  The air quality limit at the Port Boundary (to protect the public) is called the TEL (Tolerable Exposure Limit) and is set at 1ppm (TVOCs) as a one-hour average.

The air quality limit within the Port (for Port workers) is called the WES (Workplace Exposure Standard) and is set at 5ppm (TVOCs) as an eight-hour average.

The following graphs show air quality monitoring result from the Port of Tauranga. These graphs will be updated monthly. Please contact Genera for more information.

Port Boundary Monitoring

The Tolerable Exposure Limit (TEL) set to protect the public and set at is 1ppm (TVOCs) as a 1-hour average.

Air quality measurements are taken directly down wind and at 45 degrees to the left and the right of the fumigation activity.


Within Port Boundary Monitoring

Area where the public must not be present. The Workplace Exposure Standard (WES) is set for the purpose of protecting people in a workplace and is set at 5ppm (TVOCs) as an 8-hour average.


*Total Volatile Organic Compounds (TVOCs): Variety of organic chemical compounds (gas) present in the air including methyl bromide, formaldehyde, benzene etc.