NKAHR_perf_Req.pdf

Tree Thinning, Three Rivers Ranger District Performance Requirements AG-05G1-S-14-0021 Colville National Forest Service Page 1 of 3

NORTH KERRY, ROGERS, HUCK AND ABY PERFORMANCE REQUIREMENTS

Stand Description

Sub Item No.

Unit

Acres

Elevatio n

(Feet)

Slope Estimate

Approx.

Number of Leave Trees Per Acre

Average Spacing (Feet)

Max

DBH

Cut Limit in Inches

Additional Info. & Slash Treatment (Also See Project

Maps)

C.1 North Kerry 1 40 4000 40 194 15x15 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12

C.2 North Kerry 13 11 3499 40 194 15x15 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12,13

C.3 North Kerry 3 24 3499 40 194 15x15 <6” for LP and <7” all other species

1,2,3,4,5,7,8,12,13

C.4 North Kerry 4 23 3499 40 194 15x15 <6” for LP and <7” all other species

1,2,3,4,5,7,8,12,13

C.5 North Kerry 11 14 3499 20 194 15x15 <6” for LP and <7” all other species

1,2,3,4,5,7,8,12,13

C.6 Rogers 79A 32 3300 15-20 170 16x16 <6” for LP and <7” all other species

1,2,3,4,5,8,10

C.7 Huck 29 52 3400 45 Variable 16x16 <6” for LP and <7” all other species

3,4,5,6,8,11,14

C.8 Aby 1 10 2600 0-15 134 18x18 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12

C.9 Aby 2 11 2500 15 134 18x18 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12

C.10 Aby 25 26 4000 10 134 18x18 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12

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C.11 Aby 13 4 3700 30 134 18x18 <6” for LP and

<7” all other species

1,2,3,4,5,7,8,10,12

C.12 Aby 14 53 3800 0-40 134 18x18 <6” for LP and <7” all other species

1,2,3,4,5,7,8,10,12

BOUNDARIES – All boundaries are marked with black and orange striped flagging and white tags.

All stem densities vary from dense thickets to small openings less than one acre in size. The quoter is advised to visit the work sites to determine average cut trees per acre prior to submitting a quote. The quoter is responsible for determining the amount of work.

Species abbreviations are as follows: DF = Douglas-fir, ES = Engelmann Spruce, LP = Lodgepole Pine, PP = Ponderosa Pine, AF = Sub-Alpine Fir, GF = Grand Fir, RC = Western Red Cedar, WH = Western Hemlock, WL = Western Larch, WP = Western White Pine, PY = Pacific yew, BC= Black Cottonwood, QA= Quaking Aspen and PB = Birch species.

1/ Leave trees by preference are as follows: PP, WL, DF, RC, ES, LP, AF, WH and GF. {gnore the species WP,BC, QA and PB when spacing between leave species.}

2/ Space all healthy, undamaged trees under 7.0 inches DBH (6.0 inches DBH for lodgepole pine), to designated spacing. Do not select to leave any trees with signs of dwarf mistletoe, root rot, bark beetles or mechanical damage. Spacing can vary up to 50% of the desired distance to leave the most desirable tree and shall not materially increase or decrease the number of leave trees per acre.

3/ Stump heights not to exceed 6 inches.

4/ Minimum required tree height for cutting is 1 Foot.

5/ Leave no cut trees hung up.

6/ Whipfall all live AND dead trees (greater than 1 foot tall and less than 6" DBH for LP or less than 7" DBH all other species), except for any healthy PP, WL, and WP. Also, cut all existing stumps to a height of 6 inches from the ground

7/ Lop and scatter required when slash accumulations exceed 2 feet in depth. Slash will be cut in to lengths of 5 feet or less.

Slash shall be pulled back 2 feet from unit boundaries, streams, trails and 6 feet from fences.

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8/ No Hardwoods or brush species shall be cut.

9/ Stump heights must not exceed 6 inches.

10/ Within 50 feet of the centerline of a stream channel, marsh or lake shift species preference to RC, WH, ES, AF, PP, WL, DF, LP, and GF. Do not cut or pile within 15 feet of stream channel.

11/ Hand pile all existing slash. Piles must be located at least 6 feet from leave trees and be a minimum of 4 ft x 4 ft x 8 ft in size with waterproof paper covering to top 1/3 of pile with material placed on top to prevent loss of paper due to wind.

12/ Retain a 10 foot to 15 foot wide live vegetation screen along roads or within the unit that disrupts viewing into unit.

13/ Retain 10% of unit as uncut and unthinned.