Paragraph 4
The sampler’s exhaust outlet should be positioned so as to avoid recirculation of exhaust gases to the sampler inlet.
The following factors may also be taken into account:
(a)
interfering sources;
(b)
security;
(c)
access;
(d)
availability of electrical power and telephone communications;
(e)
visibility of the site in relation to its surroundings;
(f)
safety of public and operators;
(g)
the desirability of co-locating sampling points for different pollutants; and
(h)
planning requirements.