9. In these Regulations, “relevant function” means any of the following functions—
(a)determining an application—
(i)for the grant of an environmental permit under regulation 13(1),
(ii)for the variation of an environmental permit under regulation 20(1),
(iii)for the transfer of an environmental permit in whole or in part under regulation 21(1),
(iv)for the surrender of an environmental permit in whole or in part under regulation 25(2),
(b)varying an environmental permit—
(i)on the initiative of the regulator under regulation 20(1),
(ii)in relation to a transfer in whole or in part under regulation 21(1) or (3),
(iii)in relation to a partial revocation under regulation 22(1),
(iv)in relation to a partial surrender under regulation 24(2) or 25(2),
(c)revoking an environmental permit in whole or in part under regulation 22(1),
(d)exercising the power to serve a notice under Schedule 21 or 22 requiring a person to hold an environmental permit,
(e)exercising the following powers or duty—
(i)any power in relation to standard rules in Chapter 4 of Part 2,
(ii)the duty to vary an environmental permit after revocation of standard rules in regulation 30(3),
(f)exercising any of the following powers relating to enforcement—
(i)the power to serve an enforcement notice,
(ii)the power to serve a suspension notice,
(iii)the power to serve a prohibition notice,
(iv)the power to serve a landfill closure notice,
(v)the power to serve a mining waste facility closure notice.