Specifications include, but are not limited to: B-05 Thinning MethodsSelection of leave trees or crop trees will be made by the Contractor according to the following specifications as well as those found in the Unit Description table (Section II-A). Two contrasting thinning procedures are recognized. The particular method to be used is designated for each unit on the Unit Description Table. These are Simple Spacing Thinning and Diameter Limit Thinning.A. Simple Spacing Thinning When thinning on a spacing basis, Contractor will select and leave uncut the largest live conifer trees of good form and vigor that will maintain the average spacing designated in the Unit Description Table. To maintain average spacing, Contractor may not need to cut as many trees immediately adjacent to gaps. However, clumps or patches should not be left unthinned to make up gaps in the stand. If the Compliance Forester determines that narrower spacing is appropriate for portions of a Unit, 6' x 6' spacing will be used. Spacing is the average distance between trees that will result in the correct number of tree left per acre. The number of trees left per acre will be measured by DNR to determine compliance with the Per Acre Zone of Acceptance as described in Clause C-02. B. Diameter Limit Thinning When thinning on a diameter limit basis, Contractor shall cut trees smaller than the diameter limit, specified in the Unit Description, and will leave uncut the largest live conifer trees of good form and vigor that will maintain the spacing designated in the Unit Description. Contractor will only cut trees larger than the diameter limit when individual trees are clearly diseased, damaged, or deformed. As a general rule, small trees growing into the canopy of the larger trees will be cut. Spacing will be determined by the average number of trees left uncut per acre, including trees both above and below the diameter limit. Contractor shall not damage the stand by cutting trees that will create undesirable gaps in the stand. The number of trees left per acre will be measured by DNR to determine compliance with the Per Acre Zone of Acceptance as described in Clause C-02, except when desirable trees exceeding the diameter limit comprise a majority of the total tree count. In that case, the Per Acre Zone of Acceptance will be increased by the number of trees above the diameter limit exceeding a simple majority. B- 06 Order of Selection of Leave TreesThe order of selection of leave or crop trees will be as follows: A. Leave dominant and necessary co-dominant trees. B. Maintain specified average number of trees per acre. C. Maintain specified average spacing. D. Select crop tree by species in the following order unless otherwise specified in the Unit Description:1.Western red cedar2.Western larch3.Ponderosa Pine 4.Western White Pine5.Douglas-fir 6.Lodgepole pine 7.Grand fir