The Environmental Protection (Prescribed Processes and Substances) Regulations 1991

Exceptions

4.—(1) Subject to paragraph (6), a process shall not be taken to be a Part A process if it has the following characteristics, namely—

(i) that it cannot result in the release into the air of any substance prescribed by regulation 6(1) 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 harm or its capacity to cause harm is insignificant; and

(ii) that it cannot result in the release into water of any substance prescribed by regulation 6(2) except in a concentration which is no greater than the background concentration; and

(iii) that it cannot result in the release into land of any substance prescribed by regulation 6(3) or there is no likelihood that it will result in the release into land of any such substance except in a quantity which is so trivial that it is incapable of causing harm or its capacity to cause harm is insignificant.

(2) Subject to paragraph (6), a process shall not be taken to be a Part B process unless it will, or there is a likelihood that it will, result in the release into the air of one or more substances prescribed by regulation 6(1) in a quantity greater than that mentioned in paragraph (1)(i) above.

(3) A process shall not be taken to fall within a description in Schedule 1 if it is carried on in a working museum to demonstrate an industrial process of historic interest or if it is carried on for educational purposes in a school as defined in section 114 of the Education Act 1944(1) or, in Scotland, section 135(1) of the Education (Scotland) Act 1980(2).

(4) The running on or within an aircraft, hovercraft, mechanically propelled road vehicle, railway locomotive or ship or other vessel of an engine which propels it shall not be taken to fall within a description in Schedule 1.

(5) A process shall not be taken to fall within a description in Schedule 1 if it is carried on as a domestic activity in connection with a private dwelling.

(6) Paragraphs (1) and (2) do not exempt any process described in Schedule 1 from the requirement for authorisation if the process may give rise to an offensive smell noticeable outside the premises where the process is carried on.

(7) In these regulations, “background concentration” means any concentration of the relevant substance which would be present in the release irrespective of any effect the process may have had on the composition of the release and, without prejudice to the generality of the foregoing, includes such concentration of the substance as is present in:—

(a) water supplied to the premises where the process is carried on;

(b) water abstracted for use in the process; and

(c) precipitation onto the premises on which the process is carried on.

(1)

1944 c. 31

(2)

1980 c. 44.