Specifications include, but are not limited to:. To harvest all of the merchantable timber designated and to be marked on Douglas-fir stands of 105 total acres, standing and being upon those certain lands known as the Forest Grove Watershed, portions of Sections 23 and 24, Township 1N, Range 5W, Washington County, State of Oregon. See the stand harvest information below and the attached map for more details. Trees are to be harvested May through September, 2020 as weather permits. The harvest is expected to yield approximately 1,700 MBF Douglas-fir. 84 acres of the harvest are in 105-year-old Douglas-fir stands with average merchantable volumes of 40 MBF per acre. 20 acres of these older stands will be patch-cut to remove most of the merchantable volume and 64 acres will be thinned to promote stand diversity and natural regeneration. 21 acres of the adjacent 60-year-old stands will be thinned to promote forest health. The terrain is favorable for ground-based logging on 88 acres. Cable yarding will be necessary on 11 acres of the older stand patch cuts and 6 acres of the older stand thinning Treatment; Acres; Average Age; Avg. Stand Vol/Acre; Tree Height; Harvest Vol/Acre; Total Harvest Volume Patch-cut; 20; 105; 45 M; 150-180 ft.; 40 M; 800 M Heavy Variable Thin; 64; 105; 40 M; 150-180 ft.; 12 M; 750 M Light Thin; 21; 60; 25 M; 110-120; 7 M; 150 105 Acres; Totals: 1,650 M Harvest Prescriptions: Patch-Cuts: A total of 20 acres will be cut in seven (7) separate patches.