(1) Subject to paragraph (6) below, in the case of an application to which paragraph (2) below applies, for the period mentioned in paragraph 5(1) of Schedule 1 to the 1990 Act there shall be substituted–
(a) in England and Wales, the period of eighteen months;
(b) in Scotland, the period of fifteen months,
beginning with the day on which the enforcing authority received the application or within such longer period as it may agree with the applicant.
(2) This paragraph applies to an application for an authorisation to carry on a process which–
(a) falls within the description set out in paragraph (c) of Part B of section 1.3 in Schedule 1 to the Environmental Protection (Prescribed Processes and Substances) Regulations 1991 (burning waste oil to produce energy);
(b) involves only the use of one or more appliances having a net rated thermal input, or aggregate net rated thermal input, not exceeding 0.4 megawatts; and
(c) is an existing process for which the prescribed date is, in the case of a process carried on in England or Wales, that referred to in paragraph 11(1)(ii) of Schedule 3 to those Regulations and, in the case of a process carried on in Scotland, that referred to in paragraph 24(1)(ii) of that Schedule.
(3) Subject to paragraph (6) below, in the case of an application to which paragraph (4) below applies, for the period mentioned in paragraph 5(1) of Schedule 1 to the 1990 Act there shall be substituted, the period of fourteen days beginning with the day on which the enforcing authority received the application or within such longer period as it may agree with the applicant.
(4) This paragraph applies to an application for an authorisation to carry on any process which–
(a) is not an existing process;
(b) falls within paragraph (2)(a) and (b) above; and
(c) does not involve the burning of waste oil generated otherwise than as a result of activities carried on by the applicant on the premises where the process is to be carried on.
(5) Subject to paragraph (6) below, in the case of an application for an authorisation to carry on any existing process subject to local control which is described in paragraph (2)(c) above but does not fall within paragraph (2)(a) and (b) above, for the period mentioned in paragraph 5(1) of Schedule 1 to the 1990 Act there shall be substituted–
(a) in England and Wales, the period of twelve months;
(b) in Scotland, the period of nine months,
beginning with the day on which the enforcing authority received the application or within such longer period as it may agree with the applicant.
(6) In the case of an application to which paragraph (2), (4) or (5) above applies and to which article 2(2) above also applies, the period mentioned in paragraph (1), (3) and (5) above shall begin with the day on which the matters to be determined under section 21 or 22 of the 1990 Act are finally disposed of.
(7) In this article, “existing process” has the same meaning as in the Environmental Protection (Prescribed Processes and Substances) Regulations 1991.