Paragraph 6 Application of Part B activities: releases into the air
Subject to sub-paragraph (2), an activity must not be taken to be a Part B activity within Part 2 of this Schedule if it cannot result in the release into the air of a substance listed in sub-paragraph (3) or there is no likelihood that it will result in the release into the air of any such substance except in a quantity which is so trivial that it is incapable of causing pollution or its capacity to cause pollution is insignificant.
Sub-paragraph (1) does not apply to—
an SED activity; or
an activity which may give rise to an offensive smell noticeable outside the site where the activity is carried on.
References to, or to the release into the air of, a substance listed in this paragraph are to any of the following substances—
oxides of sulphur and other sulphur compounds;
oxides of nitrogen and other nitrogen compounds;
oxides of carbon;
organic compounds and partial oxidation products;
metals, metalloids and their compounds;
asbestos (suspended particulate matter and fibres), glass fibres and mineral fibres;
halogens and their compounds;
phosphorus and its compounds;
particulate matter.