79.2. A residual forest of block cutting must1° have within the limits of the harvest site an area at least equal to the size of the block cutting harvest areas;
2° be at least 200 m wide;
3° be constituted of forest stands that are more than 7 m tall;
4° be constituted of forest stands having a forest cover density higher than 40% or at least 25% without exceeding 40%, provided in that case that the proportion of the residual forest area having such a density is equal to or smaller than 20%, or if the proportion exceeds 20%, is equal to or smaller than the proportion of the forest stands having such a density in forests 7 m tall or more in the harvest site before management;
5° be constituted of forest stands that are able to produce, as commercial species, a volume of mature rough timber of at least 50 m3/ha or a lower volume, provided in that case that the stands have a composition and area equivalent to those harvested;
6° be constituted of forest stands belonging in a proportion of at least 20% to the same type of forest cover as those harvested; and
7° not have been commercially harvested during the last 10 preceding years except in the cases provided for in the second paragraph of section 79.7.
For the purposes of subparagraph 2 of the first paragraph, a road or river may run through the residual forest; the treeless width of such road may not exceed 35 m and the width of the river at the boundaries of the riparian ecotone may not exceed an average of 35 m. The width of such a road or watercourse may not be included in the area of the residual forest nor in the width referred to in subparagraphs 1 and 2 of the preceding paragraph.
Despite subparagraph 3 of the first paragraph, 4 to 7 m tall stands may be scattered throughout the residual forest over less than 20% of the area, provided that the forest is constituted of at least 80% of forest stands more than 7 m tall.