6 Environmental standards for priority substances
Without prejudice to existing obligations, for the priority substances numbered 34 to 45 in Table 47 of Part 2 of Schedule 1, with the aim of achieving good surface water chemical status in relation to those substances by 2027 and preventing deterioration in the chemical status of surface water bodies in relation to those substances, the Department must—
(a) from 22 December 2018, apply the environmental quality standards set out in Table 47 of Part 2 of Schedule 1 for those substances;
(b) by 22 December 2018, establish and submit to the Commission a supplementary monitoring programme and a preliminary programme of measures covering those substances;
(c) establish a final programme of measures for those substances by 22 December 2021; and
(d) make the final programme of measures fully operational as soon as possible after 22 December 2021, and not later than 22 December 2024.