(3) in a quarry or sand pit established before 17 August 1977,
(a) enlarging the quarry or sand pit on land which did not belong, on that date, to the owner of that quarry or sand pit; or
(b) as part of redevelopment and restoration of the quarry or sand pit, i. backfilling the quarry with soils containing contaminants resulting from human activities in a concentration equal to or less than the limit values provided for in Schedule I to the Land Protection and Rehabilitation Regulation (chapter Q-2, r. 37);
ii. revegetating excavated land of the quarry or sand pit with fertilizing waste substances;
iii. laying out a residual materials landfill; and
iv. laying out space or carrying out the construction of a structure or works.