walkerPerfReq.pdf

Walker Performance Requirement Sheets Page 1 of 4

West Zone 2013 Whipfalling, Tree Thinning, Piling, Fuel Reduction and Handline Contract AG-05G1-S-13-0019

TREE THINNING PERFORMANCE REQUIREMENTS

Stand Description

Sub

Item

No.

Unit

Acres

Elevation

(Feet)

Slope

Estimate

Approx.

Number of Leave

Trees

Per Acre

Approx.

Number of Cut

Trees

Per Acre

Average

Spacing

(Feet)

Max

DBH

Cut

Limit in Inches

Minimum

Tree

Height To

Be Cut in Feet

Additional Info. & Slash

Treatment (Also See

Project Maps)

B.1 Walker

Stewardship

11 4300 36-55 170 < 500 16x16 <6” for LP and

<7” all other species

1,2,3,4,5,7,8,11

B.2 Walker

Stewardship

25 4600 0-35 170 < 500 16x16 <6” for LP and

1,2, 3,4,5,7,8,9

B.3 Walker

Stewardship

28 3900 36-55 170 < 500 16x16 <6” for LP and

1,2, 3,4,5,6,7,13

B.4 Walker

Stewardship

15 4300 36-55 170 501-1500 16x16 <6” for LP and

1,2, 3,4,5,6,7,8,12,13

B.5 Walker

Stewardship

25 4400 >55 170 1501-

16x16 <6” for LP and

1,2, 3,4,5,7,8,9,11,13

B.6 Walker

Stewardship

26 4400 >55 variable

1501-

20x20

16x16

<6” for LP and

3,4,5,6,7,8,10,13,14,15

B.7 Walker

Stewardship

17 4500 36-55 170 1501-

16x16 <6” for LP and

2, 3,4,5,6,7,14

B.8 Walker

Stewardship

21 4100 >55 170 501-1500 16X16 <6” for LP and

2, 3,4,5,7,8,11,14

Walker Performance Requirement Sheets Page 2 of 4

West Zone 2013 Whipfalling, Tree Thinning, Piling, Fuel Reduction and Handline Contract AG-05G1-S-13-0019

B.9 Walker

Stewardship

6 4100 0-35 170 1501-

16X16 <6” for LP and

2,3,4,5,8,9,13,14

B.10 Walker

Stewardship

21 5100 >55 170 1501-

16X16

<6” for LP and

<7” all other species

1 2,3,4,5,6,7,10,14

B.11 Walker

Stewardship

25 4900 >55 170 3001-

16x16

2, 3,4,5,8,13,14

B.12 Walker

Stewardship

9 4300 0-35 variable 501-1500 20x20

16x16

<6” for LP and

3,4,5,8,11,13,14,15

H.1 Walker

Stewardship

49 5100 36-55 variable 501-1500 20X20

16X16

<6” for LP and

1,2, 3,4,5,6,9

H.2 Walker

Stewardship

9 4700 0-35 variable 501-1500 20X20

16X16

<6” for LP and

3,4,5,6,11,13,14,15

H.3 Walker

Stewardship

15 4200 >55 170 1501-

2, 3,4,5,6,11,13,14

H.4 Walker

Stewardship

20 4400 36-55 170 1501-

H.5 Walker

Stewardship

8 4300 0-35 170 1501-

2, 3,4,5,6,7,11,13,14

H.6 Walker

Stewardship

15 4300 36-55 170 501-1500

16x16

<6” for LP and

H.7 Walker

Stewardship

3 4100 0-35 170 1501-

16X16 <6” for LP and

2,3,4,5,8,9,13,14

Walker Performance Requirement Sheets Page 3 of 4

West Zone 2013 Whipfalling, Tree Thinning, Piling, Fuel Reduction and Handline Contract AG-05G1-S-13-0019

BOUNDARIES – All boundaries are marked with black and orange striped flagging and white tags. No cut exclusions, flagged with day glow pink ribbon occur within units

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 = Englemann 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, 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. { Ignore 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 16 foot x 16 foot spacing. Do not select 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/ 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 leave trees and fences.

7/ No Hardwoods or brush species shall be cut.

8/ Hand pile or grapple pile all slash (unless slash is utilized). 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.

9/ Clear trees less than 7.0 inches in DBH (6.0 inches for lodgepole pine) for a 16 foot radius from all leave trees 7” to 15.9” inches

DBH and for a 20 foot radius from leave trees greater than 16.0 inches DBH.

Walker Performance Requirement Sheets Page 4 of 4

West Zone 2013 Whipfalling, Tree Thinning, Piling, Fuel Reduction and Handline Contract AG-05G1-S-13-0019

10/ No cutting within 15 feet of the centerline of open roads.

11/ 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 20 feet of stream channel.

12/ Slash will be pulled back 6 feet from fence line.

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

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

15/ When Ponderosa (PP) is present, cut to a 20 ft X 20 ft spacing. When PP is not present, cut to a 16 ft X 16 ft spacing. Do not select 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.