12. DRAFT_Attachment 5 - Yellow Pine Visual Aid.pdf

PDF 2 MB Posted

Attached to
Dutton Hill G-Z Stewardship IRSC, Coconino National Forest, Arizona
Solicitation number
12363N24R4009
Issued by

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This document appears to be a draft visual aid to supplement the definition of "yellow pine" for a federal contract opportunity related to the Dutton Hill G-Z Stewardship IRSC project on the Coconino National Forest in Arizona. The project objectives are to increase forest health and vigor, reduce hazardous fuels, and reintroduce low-intensity fire through mechanical treatments and timber removal. The total project area consists of 8,829 acres of ponderosa pine forest and savanna/grasslands. Although timber volume and treatment acres are estimated, the actual quantities will be determined after completion of certain preliminary work items. The contract will be awarded as a commercial services contract with requirements for timber removal. A pre-solicitation site visit has not yet been scheduled. Relevant federal agencies involved are the Department of Agriculture Forest Service.

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Yellow Pine Visual Aid

(intended to supplement yellow pine definition and help forestry technicians doing walkthroughs and timber marking on Dutton Hill accurately determine what is and what is not a yellow pine)

Yellow Pine/Pre-settlement/Old Tree: mature ponderosa pine approximately 150 years or older; bark ranges from reddish brown, shading to black on top with moderately large plates between fissures to reddish brown to yellow, with very wide, long, and smooth plates; tops range from pyramidal or rounded (occasionally pointed) to flat (making no further height growth); branches in the lower third of the crown are generally drooping, and in older trees, are often large, gnarled or crooked.

Yellow pines (very clear) – very yellow bark, with long, smooth plates

Yellow pines (fairly clear) – yellow bark with fairly large plates, though plates not quite as long and smooth as previous picture; branches aren’t very large, but still drooping in lower third of crown

Yellow pines (borderline) – bark reddish brown, turning yellow, not as obviously platy as in previous pictures (especially tree on left), but larger plates are developing between fissures; lower branches are large and drooping (partly due to mistletoe but still enough to be a yellow pine)

Transitional blackjacks (borderline yellow pines) – bark beginning to turn reddish brown, but no real plates developing; branches in lower crown horizontal to angling slightly upward and not very large.

Transitional blackjacks (not borderline yellow pines)– bark beginning to turn reddish brown, but no real plates developing; branches in lower crown horizontal to angling slightly upward and not very large.

File details come from the government source that posted it. Updated .