3. A0002_Tiny G-Z IRSC Appendix B - Timber Specifications Pages 19+20.pdf

Tiny G-Z IRSC AMENDMENT 0002 Fremont-Winema National Forest Page 19 of 35 Chemult Ranger District

For all trees that meet A.2 log removal specifications

Subdivisions Mandatory: Dry Ponderosa Pine

End Result: After treatment these areas will have an average stand density of 60 ft2 per acre of basal area and increased variability in the structure and spatial arrangement of the residual trees in the form of individual trees, clumps, openings, and retention patches. The residual area will have an increase in its mean diameter, a reduction in ladder fuels, as well as a shift in composition and structure towards mature trees, larger trees, fire-adapted conifers, and other desirable species.

A basal area factor of 10 will be used to determine stocking compliance.

Residual stocking objectives: Perform these in order; subsequent objectives do not override any before them:

1. Retain all mature trees, orange-marked trees, hardwoods, trees greater than or equal to 21” DBH, and trees greater than or equal to 26” DSH. Because this is the first objective in this list, no other objective can override this requirement.

2. Within 30 feet of healthy mature ponderosa pine and healthy mature sugar pine, cut all conifers.

3. Within 30 feet of healthy 21” DBH and/or 26” DSH or greater ponderosa pine and sugar pine, cut all lodgepole pine and white fir. Cut all lodgepole pine and white fir, unless it would create an opening larger than 2 acres or total over 10% of the subdivision area; if this occurs, leave additional acres at target basal area for these species.

4. Within 50 feet of an aspen clump, cut all conifers.

5. Thin residual stand to a target basal area of 60 square feet with an acceptable range of 50-70 square feet. Because this is the last objective in this list, previous objectives can override this requirement.

Tree selection objectives:

1. Cut trees shall be selected by thinning from below so that the residual stand will be comprised of healthy dominant and codominant trees. Species preference for leave trees from highest priority to lowest is sugar pine, ponderosa pine, Douglas-fir, incense cedar, white fir, and lodgepole pine. White fir and lodgepole pine are the least desirable leave trees.

2. 30% of all residual trees should be individual trees. Acceptable individual tree target is 20-40% of residual trees per acre. See Table 1 for an example of how individual trees should be retained.

3. Leave remaining residual trees as clumps consisting of 2 to 4 ponderosa pine, followed by the most preferred species, throughout the subdivision. Leave tree preference will be given to the healthiest tree first and then preferred species.

See Table 1 for an example of how clumps of trees should be retained.

4. Do not leave trees with one-sided crowns. When two or more trees have developed one-sided crowns due to proximity, either cut or retain all to meet the desired stocking level.

Tiny G-Z IRSC AMENDMENT 0002 Fremont-Winema National Forest Page 20 of 35 Chemult Ranger District

For all trees that meet A.2 log removal specifications

Subdivisions Portions of Mandatory: Control Feature

End Result: Where the control feature overlaps the mandatory unit, as shown on Contract Area Map, the control feature prescription shall apply. After treatment these areas will have an average stand density of 50 ft2 per acre of basal area and increased variability in the structure and spatial arrangement of the residual trees in the form of individual trees, clumps, and openings. The residual area will have an increase in its mean diameter, a reduction in ladder fuels, as well as a shift in composition and structure towards mature trees, larger trees, fire-adapted conifers, and other desirable species.

A basal area factor of 10 will be used to determine stocking compliance.

Residual stocking objectives: Perform these in order; subsequent objectives do not override any before them:

1. Retain all mature trees, orange-marked trees, hardwoods, trees greater than or equal to 21” DBH, and trees greater than or equal to 26” DSH. Because this is the first objective in this list, no other objective can override this requirement.

2. Within 30 feet of healthy mature ponderosa pine and healthy mature sugar pine, cut all conifers.

3. Cut all lodgepole pine and white fir, unless it would create an opening larger than 2 acres or total over 10% of the subdivision area; if this occurs, leave additional acres at target basal area for these species.

4. Within 50 feet of an aspen clump, cut all conifers.

5. Cut all dead and dying trees. Leave 5 dead trees per acre.

6. Thin residual stand to a target basal area of 50 square feet with an acceptable range of 40-60 square feet. Because this is the last objective in this list, previous objectives can override this requirement.

Tree selection objectives:

1. Cut trees shall be selected by thinning from below so that the residual stand will be comprised of healthy dominant and codominant trees. Species preference for leave trees from highest priority to lowest is sugar pine, ponderosa pine, Douglas-fir, incense cedar, white fir, and lodgepole pine. White fir and lodgepole pine are the least desirable leave trees.

2. 30% of all residual trees should be individual trees. Acceptable individual tree target is 20-40% of residual trees per acre. See Table 1 for an example of how individual trees should be retained.

3. Leave remaining residual trees as clumps consisting of 2 to 4 ponderosa pine, followed by the most preferred species, throughout the subdivision. Leave tree preference will be given to the healthiest tree first and then preferred species.

See Table 1 for an example of how clumps of trees should be retained.

4. Do not leave trees with one-sided crowns. When two or more trees have developed one-sided crowns due to proximity, either cut or retain all to meet the desired stocking level.