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 25 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;
(g)exercising the power to serve a flood risk activity emergency works notice, a flood risk activity notice of intent or a flood risk activity remediation notice;
(h)exercising the power to take steps under paragraph 9(1) of Part 1 of Schedule 25.