7. INFO ONLY Mech Piling Difficulty Matrix.pdf
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- Attached to
- 2026 Kaniksu Fuels Treatments SSC-Region 6 Pacific Northwest Stewardship BPA- Colville National Forest
- Solicitation number
- 12363N26Q4089
- Issued by
-
Department of Agriculture Forest Service
About this file
This document is a Mechanical Piling Difficulty Matrix Worksheet for the 2026-2027 WA-COF KFT contracting period, used by the Forest Service Newport District to assess and categorize logging operations across multiple forest areas.
The worksheet establishes a standardized rating methodology for mechanical piling operations across five rating categories: Volume of Slash Per Acre (weight 0.20), Large Down Woody Material (weight 0.30), Leave Tree Spacing (weight 0.30), High Stumps (weight 0.10), and Average Slope (weight 0.10). Each category receives numerical ratings (2, 4, or 6) corresponding to minimal, moderate, or heavy/steep conditions. The overall difficulty rating is calculated by multiplying each category rating by its weight and summing the results, yielding a score that falls into one of three levels: Level 1 (2.0-3.2, baseline difficulty), Level 2 (3.3-4.5, moderate difficulty), or Level 3 (4.6-6.0, high difficulty). The matrix also identifies applicable logging systems (Cut-to-Length w/Forwarding, Feller Buncher w/Skidding, or Skyline Logging) and prescribes Fall/Winter or Winter logging seasons. The worksheet contains detailed assessments for 67 individual timber sale units across seven districts (Little Tacoma, Rankin, Swamp Creek, Ione, Limestone, Kalispel Moon, and Kings Lake), totaling 3,333 acres distributed across the three difficulty categories: Level 1 (770 acres), Level 2 (1,434 acres), and Level 3 (1,129 acres).
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Text version
3/2/2026
District:
Rating Measurement Volume of Slash Per Acre 2 Minimal
4 Moderate 6 Heavy
Large down woody material 2 Minimal 4 - 5 per acre 4 Moderate 6 - 12 per acre 6 Heavy 13+ per acre
Leave Tree Spacing 2 Open Seed tree cut 4 Moderate Commercial thin 6 Tight Skid trail travel only
High Stumps 2 Minimal 3 - 5 per acre 4 Few 6 - 12 per acre 6 Abundant 13+ per acre
Average Slope 2 Minimal 0 - 20% 4 Moderate 21% - 35% 6 Steep 35% +
Weight Rating Calculated Rating
0.20 X 6 1.2
0.30 X 6 1.8
0.30 X 6 1.8
0.10 X 6 0.6
0.10 X 6 0.6
Overall Rating 6.00
Level Scale Level 1 2.0 - 3.2 Base line difficulty Level 2 3.3 - 4.5 Moderate difficulty Level 3 4.6 - 6.0 High difficulty
Logging System Cut to length w/forwarding Feller buncher w/whole tree skid Skyline Logging
Logging Season Summer Fall/Winter Winter
PILING DIFFICULTY MATRIX WORKSHEET
Newport
Rating Category
Rating Measurement Metrics
Rating Calculations Rating Category
Volume of Slash Per Acre Large down woody material Leave Tree Spacing High Stumps Average Slope
Rating Levels
Other Noteworthy Factors
Total rating is calculated by FS personnel assigning a numerical number rating in each rating category, multiplying the rating to the weight, then adding up all the ratings.
Once the total rating has been determined, the rating level is selected by where the numerical rating level falls in between the scale.
Rating description Rationale
MECHANICAL PILING DIFFICULTY MATRIX
2.0 - 3.2 3.3 - 4.5 4.6 - 6.0 level 1 level 2 level 3
2026 - 2027 WA-COF KFT MECHANINCAL PILING DIFFICULTY LEVELS
ACRES
Little Tacoma 41 Rating Catagory Weight Rating Calculated
Volume of Slash Per Acre 0.20 4 0.8 Large down woody materail 0.30 2 0.6 Leave tree spacing 0.30 2 0.6 High Stumps 0.10 2 0.2 Average Slope 0.10 2 0.2
Overall Rating 2.4 Cate go ry
1 P ilin g
Logging System Logging Season
Little Tacoma 44 Rating Catagory Weight Rating Calculated Fall/Winter
Feller Buncher w/Skidding
Volume of Slash Per Acre 0.20 4 0.8 Large down woody materail 0.30 4 1.2 Leave tree spacing 0.30 2 0.6 ory
Pilin g
High Stumps 0.10 2 0.2 ate go ry
Average Slope 0.10 2 0.2 Cate g
Overall Rating 3 C
Logging System Feller Buncher w/Skidding Logging Season Fall/Winter
Little Tacoma 45 Rating Catagory Weight Rating Calculated
Volume of Slash Per Acre 0.20 6 1.2 lin
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 3.4
Little Tacoma 49 Rating Catagory Weight Rating Calculated
Volume of Slash Per Acre 0.20 2 0.4
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 2
Little Tacoma 50 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Little Tacoma 66 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 2.4
Rankin 12 Rating Catagory Weight Rating Calculated
Volume of Slash Per Acre 0.20 2 0.4
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Average Slope 0.10 4 0.4 Cate
Overall Rating 2.2
Logging System Logging Season
Skyline Logging level 1 level 2 level 3
2026 - 2027 WA-COF KFT MECHANINCAL PILING DIFFICULTY LEVELS
ACRES
Rankin 14 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Logging System Skyline Logging
Rankin 17 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 3.2
Rankin 34 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Logging System Cut-to-Length w/Forwarding
Rankin 36 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Rankin 37 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Rankin 38 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Rankin 39 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Feller Buncher w/Skidding level 1 level 2 level 3
Rankin 40 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 2 0.6 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 2.6
Swamp Creek 69 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 4.8
Swamp Creek 70 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 267 ory
P
High Stumps 0.10 2 0.2 ate
Average Slope 0.10 6 0.6 Cate
Overall Rating 5.6
Swamp Creek 80 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 4.6
Swamp Creek 88 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
20 3 Pilin g
Leave tree spacing 0.30 6 1.8 20 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 4.6
Swamp Creek 89 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Overall Rating 5.6
Swamp Creek 91 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 5.2
Cut-to-Length w/Forwarding level 1 level 2 level 3
Swamp Creek 92 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 2 0.2 ate
Swamp Creek 93 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 17 ory
P
High Stumps 0.10 2 0.2 ate
Swamp Creek 109 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 4.8
Swamp Creek 170 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Overall Rating 5.4
Ione 38 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Overall Rating 4
Ione 39 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 40 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate level 1 level 2 level 3
Ione 41 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 42 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 64 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 68 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 69 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 70 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 71 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Feller Buncher w/Skidding level 1 level 2 level 3
Ione 72 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 75 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 76 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 81 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 83 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 84 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 85 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Feller Buncher w/Skidding level 1 level 2 level 3
Ione 86 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 88 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 164 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Ione 188 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Limestone 41 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Limestone 43 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Limestone 46 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Overall Rating 5
Feller Buncher w/Skidding level 1 level 2 level 3
Limestone 49 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 6 1.8 ory
P
High Stumps 0.10 4 0.4 ate
Overall Rating 5
Kalispel Moon 73 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 2 0.6
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Kalispel Moon 75 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Overall Rating 3.8
Kalispel Moon 82 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Kalispel Moon 83 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 4 0.4 ate
Kings Lake 85 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Kings Lake 91 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Cut-to-Length w/Forwarding level 1 level 2 level 3
Kings Lake 263 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Kings Lake 283 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2
Pilin g
Leave tree spacing 0.30 4 1.2 ory
P
High Stumps 0.10 2 0.2 ate
Kings Lake 289 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 6 1.8 Leave tree spacing 0.30 4 1.2 High Stumps 0.10 4 0.4 Average Slope 0.10 4 0.4
Overall Rating 4.6 Cate go ry
3 P ilin g
Logging System Logging Season
Kings Lake 292 Rating Catagory Weight Rating Calculated
Cut-to-Length w/Forwarding
Leave tree spacing 0.30 4 1.2 High Stumps 0.10 4 0.4 Average Slope 0.10 4 0.4
Overall Rating 4.6 Cate go ry
3 P ilin g
Logging System Logging Season
Kings Lake 293 Rating Catagory Weight Rating Calculated
Leave tree spacing 0.30 4 1.2 High Stumps 0.10 4 0.4 Average Slope 0.10 4 0.4
Overall Rating 4.6 Cate go ry
3 P ilin g
Logging System Logging Season
Kings Lake 638 Rating Catagory Weight Rating Calculated
Large down woody materail 0.30 4 1.2 Leave tree spacing 0.30 4 1.2 High Stumps 0.10 2 0.2 Average Slope 0.10 4 0.4
Overall Rating 3.8 Cate go ry
2 P ilin g
Logging System Logging Season
Feller Buncher w/Skidding Fall/Winter level 1 level 2 level 3
770 1434 1129
Total Acres 3333 Total Cost
Total Acres By Category
| X.INFO_ONLY 2026-2027_Piling Difficulty Matrix_Explanation |
| Rating Explained |
| X. INFO ONLY 2026-2027_Piling Difficulty Matrix_Ratings |
| 2019 - T.O. 1 |
File details come from the government source that posted it. Updated .