DUIS Summit Road Fuel Reduction NCT AMND

Summit Road Fuel Reduction NCT
DUIS for Non-Commercial Thinning (NCT)
Umatilla NF, Walla Walla RD
Requisition #: 1168495 Summit Road Fuel Reduction NCT
Unit #

Acres

Treatment

Mandatory NCT & Pile Units
NCT & Pile
UMF 113
NCT & Pile
UMF 100
10.5
NCT & Pile
UMF 095
NCT & Pile
UMF 097
2.5
NCT & Pile
UMF 092
NCT & Pile
UMF 084
NCT & Pile
UMF 082
NCT & Pile
UMF 079
NCT & Pile
UMF 075
NCT & Pile

UMF 139a

NCT & Pile

UMF 139b

UMF 141a

NCT & Pile

UMF 147b

NCT & Pile
NCT & Pile
UMF 152
NCT & Pile
UMF 152
Total Acres

Residual Spacing

Misc Info

21' x 21'
17' x 17'
30' x 30'
17' x 17'
17' x 17'
17' x 17'
17' x 17'
35' x 35'
17' x 17'
21' x 21'
17' x 17'
17' x 17'
17' x 17'
17' x 17'

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17' x 17'

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21' x 21'
17' x 17'
17' x 17'
21' x 21'

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Optional NCT & Pile Units
NCT & Pile
UMF 146

UMF 141c

NCT & Pile

UMF 140b

NCT & Pile
UMF 164
NCT & Pile
Total Acres

Contract #:
Trees Per Acre
(tpa)

Table 1: Miscellaneous Info
Species Preference: (1) Western larch, (2) Ponderosa pine, (3) Douglas-fir, (4) Subalpine fir, (5) Lodgepole pine, (6) Englemann spruce, (7) Grand fir. Do not cut or masticate uncommon tree species such as quaking aspen, cottonwood, whitebark pine, and western white pine, pacific yew - will be retained, unless deemed hazardous to operations.
Thinning Specifications: Trees up to 10.0" dbh and down to 12" in height shall be cut to meet residual spacing and trees per acre standards as specified for each unit. Residual spacing values indicate a unit-wide average. Where possible, a 25% +/- variability in the residual spacing shall be applied. Conifers 10.0" DBH or greater will be used for leave trees and spacing. Trees less than 10.0" dbh that are under the crowns of over story Ponderosa Pine, Western Larch, or Douglas Fir should be felled to reduce ladder fuels. No thinning slash shall be left outside of unit boundaries.
Leave Tree Prioritization: Prioritize tree vigor over species. Favor more vigorous trees with healthy foliage, wellformed crowns (crown ratio >30%), and free of substantial signs of insect damage, mistletoe, or pathogen infection.