RTHK report from 14 Nov 2012:
The audit report came as high levels of air pollution again hit the territory with the reading at the roadside monitoring station in Central soaring to 140.
High levels were also recorded at the other two roadside stations in Causeway Bay and Mongkok.
Earlier this year the government said the territory's air quality objectives would be revised to more stringent levels from 2014.
But the auditor warned that the objectives would not provide adequate protection of public health, as they were mostly set on interim targets of the World Health Organisation, rather than its strictest standards.