8. In carrying out the authorised development the undertaker may—
(a)in respect of the earthworks associated with Work Nos. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 only, deviate laterally from the lines or situations of the authorised development shown on the works plans to a maximum of 2.0 metres except—
(i)between points A and B, between points I and J, and between points M and N where they may deviate a maximum of 1.0 metres;
(ii)between points C and D, between points G and H, between points K and L, between points O and P, between points Q and R, and between points S and T where they may not deviate outwards; and
(iii)between points E and F where they may deviate a maximum of 5.3 metres;
(b)in respect of any other work, deviate laterally from the lines or situations of the authorised development shown on the works plans to the extent of the Order limits shown on those plans;
(c)deviate vertically from the levels of the authorised development shown on the engineering drawings and sections to a maximum of 0.5 metres upwards or downwards except for Work No. 4d between points A1 (shown on sheet 2 of the works plans) and point B1 (shown on sheet 4 of the works plans) where it may deviate to a maximum of 0.5 metres upwards or 2.0 metres downwards,
except that these maximum limits of deviation do not apply where it is demonstrated by the undertaker to the Secretary of State’s satisfaction and the Secretary of State, following consultation with the relevant planning authority and the local highway authority, certifies accordingly that a deviation in excess of these limits would not give rise to any materially new or materially different environmental effects in comparison with those reported in the environmental statement.