Technical Booklet K Ventilation·Page 59·(c)
Nitrogen dioxide exposure limits
Specifies maximum exposure levels for nitrogen dioxide in indoor environments, with separate limits for 1-hour average and long-term average concentrations.
exposure to the following levels of nitrogen dioxide (NO2) should not be exceeded –
(i) 288 μg/m3 (150 ppb) – 1 hour average (Department of the Environment, 1996); or
(ii) 40 μg/m3 (21 ppb) – long-term average (WHO, 2003);
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