1. for PM 2,5 : (a) when 10 years before the AEI was < 10,0 μg/m 3 : 10 % lower than the AEI was 10 …

(a)

when 10 years before the AEI was < 10,0 μg/m3: 10 % lower than the AEI was 10 years before or 8,5 μg/m3, whichever is the lower, unless the AEI is already no higher than the average exposure concentration objective for PM2,5 set out in Point C;

(b)

when 10 years before the AEI was < 12,0 μg/m3 and ≥ 10,0 μg/m3: 15 % lower than the AEI was 10 years before or 9,0 μg/m3, whichever is the lower;

(c)

when 10 years before the AEI was ≥ 12,0 μg/m3: 25 % lower than the AEI was 10 years before;