Attachment 2 - Clearing Limits - Trees and Logs - 912-01 FNF.pdf
PDF 685 KB Posted
- Attached to
- Deferred Trail Maintenance: Logout Clearing and Brushing for the Flathead National Forest
- Solicitation number
- _1284LM25Q0018
- Issued by
-
Department of Agriculture Forest Service
About this file
This document is a U.S. Department of Agriculture Forest Service standard trail plan detailing clearing limits and specifications for tree and log removal for a 2025 FNF Trail Contract. The plan provides comprehensive technical guidance for Trail Class 3 Pack and Saddle trail maintenance, specifying clearing methodologies, dimensions, and disposal techniques.
Key specifications include clearing widths of 4 ft downhill and uphill, with a 0 ft clearing height, and tree diameter ranges from 12 to 24 inches. Hazard tree removal criteria define hazardous trees as standing or leaning dead trees larger than 8 inches in diameter and over 90 feet tall. Disposal methods include options like lop and scatter outside the trailway, pile and burn, chipping, and hauling to a disposal site. The document applies to trails with over 35% sideslope, with specific notes that leave trees must be live, sound, and have undamaged root systems.
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Text version
CLEARING LIMITS - TREES AND LOGS
CLEARING LIMITS * LEAVE TREES CLEAR ZONE STUMPS HAZARD TREE
CLEARING DOWNHILL
W
{A) H
METHOD
HAZARD TREE
REMOVAL
WIDTH
CD
CLEARING LIMIT
DOWNHILL
WIDTH
TRIM
BRANCHES
FLUSH WITH
TRUNK
* LEAVE TREES
UPHILL CLEARING
Wre)H H
rc) T
CLEARING
HEIGHT
I I
DISTANCE DIAMETER
cm) (INCHES)
HAZARD TREE
REMOVAL
WIDTH
CD
CLEARING LIMIT
UPHILL
WIDTH
DOWNHILL
W
H
* LEAVE TREES
UPHILL
W
H
,___ DISTANCE __ _____,.,__,I
@ DOWNHILL
CLEAR ZONE
WIDTH
I
UPHILL
CLEAR ZONE
WIDTH
r DISTANCE ,-++-___, MAXIMUM
OBSTRUCTION
HEIGHT
DEPARTMENT OF AGRICULTURE
FOREST SERVICE
STANDARD TRAIL PLAN
____ ✓,7
PROJECT NAME & LOCATION
MAXIMUM
STUMP
HEIGHT
MAXIMUM MAXIMUM REMOVAL DISPOSALOBSTRUC
@N
HEIGHT H
T W(l)H
METHOD COMMENTS
CLEARING
TYPE
C1
DISPOSAL
TYPE
D1 D2 D3 D4 D5 D6
DRAWING NAME
CLEARING METHOD
CLEARING
METHOD
>35% sideslope: Column A: 2 ft. & Column B: 6 ft.
COMMENTS
Applies to all trails in contract
LEAVE TREES: LEAVE TREES SHOULD BE LIVE, SOUND & UNDAMAGED WITH
UNCOMPROMISED ROOT SYSTEMS.
HAZARD TREES: HAZARD TREES ARE TREES THAT ARE STANDING OR LEANING DEAD
TREES LARGER THAN 8 INCHES IN DIAMETER AND GREATER THAN 90
FEET IN HEIGHT.
DISPOSAL METHOD
DISPOSAL
METHOD
LOP AND SCATTER OUTSIDE TRAILWAY
LOP AND SCATTER ON FILL SLOPE
PILE AND BURN
CHIP
HAUL TO DISPOSAL SITE
COMMENTS
'l" REVISION DATE � DRAWING NO.
2025 FNF TRAIL CONTRACT
12/02/2024 STD 912-01
SECTION TYPICAL ID SHEET
912 - CLEARING LIMITS CLT NO SCALE OF
� A
4 ft.
TYPICAL
ID
C1 10 ft. 4 ft. D1
Trail Class 3 PACK AND SADDLE
CLEARING LIMITS-TREES AND LOGS
12 in. 18 in. 24 in. 12 in.
File details come from the government source that posted it. Updated .