The Pollution Prevention and Control (Industrial Emissions) Regulations (Northern Ireland) 2013

8.  In Part 1—

“background quantity” means, in relation to the release of a substance resulting from an activity, such quantity of that substance as is present in—

(i)

water supplied to the site where the activity is carried out;

(ii)

water abstracted for use in the activity; and

(iii)

precipitation onto the site on which the activity is carried out;

“Part A activity” means an activity falling within Part A of any section in Part 1;

“Part B activity” means an activity falling within Part B of any section in Part 1;

“Part C activity” means an activity falling within Part C of any section in Part 1.