Seed Project 1 Twin Creek Performance Work Statement.pdf

Twin Creek II Thinning - Performance Work Statement

Project Title WRD Twin Creek II Thinning Task Order

General Information

1. PROJECT LOCATION AND DESCRIPTION

1.1. All general descriptions and contract terms and conditions listed in the Base IDIQ Performance Work Statement/Contract remain unchanged and are applicable to this Task Order PWS.

1.2. DESCRIPTION OF SERVICES: to secure services for tree thinning of 250 acres in young growth stands approximately 30 to 35 years of age.

1.3. PERIOD OF PERFORMANCE: Shall be 19TH May 2022 – 31st October 2024

1.4. GENERAL ACCESSIBILITY

1.4.1. This project is located on the Tongass National Forest’s Petersburg Ranger District, on

Mitkof Island, approximately 6 miles south of the town of Petersburg Alaska.

1.5. ITEM(S) SITE ACCESSIBILITY

1.5.1. The Government does not guarantee vehicle access or continued vehicle access to project areas by road. Roads indicated on the contract map may not be accessible by motorized vehicle. Road maintenance by the Government will not be provided for in this contract.

1.5.2. See: Appendix 1 PRD_Twin_Creek_II_Thin_Contract_Maps

1.6. LOCAL SERVICES

1.6.1. The city of Petersburg, Alaska is a full-service community and is linked to Seattle, WA via Alaska Airlines. The city of Petersburg is also served by the Alaska Marine Highway System out of Bellingham, WA. Local flight and barge services are also available.

2. CONTRACT REQUIREMENTS/TASKS

2.1. TASK – THINNING

2.1.1. The Contractor shall thin all eligible conifers to the following specifications:

Tree Size Treatment <2 feet high Leave and ignore for spacing >2 feet high and < 8 inches dbh Cut trees to reach the desired spacing 8 inches dbh and larger, not residual trees Girdle trees to reach the desired spacing all residual trees Leave and ignore for spacing

2.1.2. The Contractor shall thin all eligible conifers greater than 2 feet in height to the following spacing specifications:

Species Items Average Spacing

-25% Variance Minimum Spacing

+25% Variance Maximum Spacing

SS, WH, MH All 14’x14’ 10.5’ between crop trees

17.5’ between crop trees

YC, RC All 6’x6’ 6’ between cedars 7.5’ between cedar trees

Conifer tree spacing may be varied from the target spacing in order to give the Contractor the greatest opportunity for selecting the most desirable crop trees. Crop trees shall be no closer and no farther apart than the minimum and maximum values listed in the above table for any given spacing by species. Overall average spacing using the target spacing guides shall be maintained wherever possible.

In areas within each item that contain more abundant yellow cedar (YC) and/or redcedar (RC) trees, the crop tree spacing will change to 8’ x 8’ and will only apply to the spacing between cedar trees. The spacing between cedar trees and all other crop trees will follow the wider target spacing for that item as listed in the above table.

All spacing distance between trees shall be adjusted to horizontal distance and measured from the face of the tree boles at breast height (4.5 feet above ground level). Though most stands contain openings not occupied by trees, overly dense thickets shall not be left in one spot to offset the lack of trees in another.

2.1.3. TREES TO FAVOR FOR LEAVE TREES - Within the spacing requirements the

Contractor shall select as leave trees, the largest, best formed, most vigorous tree, of the preferred species. It shall be dominant or co-dominant, free from mechanical or animal damage, and show no signs of disease or dwarf mistletoe.

In the event the Contractor determines that no tree meets these specifications, they shall choose the one that comes closest to meeting the specifications in order to maintain the required spacing.

2.1.4. The Contractor shall not select double-trunked trees or trees that are growing on logs or stumps as leave trees unless no other crop tree is available. Double-trunked trees may be selected, in the absence of a more desirable crop tree, if they are at least half or more the height of the alternate tree choices. If a double-trunked tree is selected, both stems shall be left.

2.1.5. SPECIES PREFERENCE - The Contractor shall thin all eligible conifers greater than 2 feet in height based on the following species preference / priority ranking and no-cut specifications:

District Project Area Crop Tree Species

Preference/Priority Ranking* No- Cut / Ignore For Spacing**

1 2 3 4 5

Petersburg Twin Creek II RC YC SS WH MH LP, RA, BC

*Species Preference / Priority Ranking: 1 is highest priority species; when two species appear in the same priority ranking, they shall be considered equal and one should not be favored over the other – the objective is to leave both species distributed proportionally throughout the stand.

**No-Cut / Ignore For Spacing: Except on closed roads to aid access, these species shall not be cut and will not count as crop trees.

Species Codes: SS = Sitka Spruce; WH = Western Hemlock; MH = Mountain Hemlock; YC = Alaska yellow cedar; RC = Western red cedar; LP = Lodgepole Pine; RA = Red Alder; BC = Black Cottonwood; CA = crab apple

2.1.6. ESTABLISH NO-CUT CORRIDORS - The no-thin wildlife corridor(s) shall be 15 feet wide. It does not have to be in a straight line, curves can be used to avoid cliffs and landings, as long as the 15 foot width is maintained.

2.1.7. STUMP HEIGHT – REMOVAL OF LIVE LIMBS - All trees to be cut shall be cut below the lowest live limb, except when prevented by natural or man-made obstacles. Obstacles are objects that could damage a saw blade if nicked, include but not limited to as rock, cable or mineral soil. They do not include logs or stumps. Any live limbs left on stumps because of natural obstacles shall be trimmed to within 4 inches of the obstacle. Stump height shall not exceed 12 inches above ground level or 4 inches above natural obstacles.

2.1.8. PRUNING - Pruning branches of leave trees is allowed only when required to access and sever excess trees growing within the leave tree crown. Pruned branch stubs should not exceed 4 inches in length. Care should be taken not to damage the leave tree bole.

Damaged leave tree boles or long- branch stubs in excess of 4 inches shall count as a damaged tree for inspection purposes.

3. PERFORMANCE REQUIREMENT MEASUREMENTS:

Performance Objective

PWS

Paragraph

Measurement Method

Allowable Performance Deviation

Remedy Amount or Corrective Action

Task - Thinning 2.1 COR will inspect using plot at a spatial frequency relative to the unit area. The COR will inspect a minimum of one-half of one percent (0.5%) of the unit/contract area.

Distance from a specified

10% deviation

0% deviation for no-cut corridors

Contractor shall rework the thinned area(s), if possible.

If over cutting has occurred:

Contractors shall be charged per area in accordance with Appendix 2 Damages Table.

Full invoice payment upon acceptance of services.

centerline or designated width or following defined no-cut boundary

4. DELIVERABLE / SCHEDULE

Item No.

Deliverable Objective Due

IDIQ PWS

Paragraph 2.12

Land Access Permit

Contractor has obtained permission to operate on federal lands

10 days prior to commencement of work

IDIQ PWS

Paragraph 2.13

Camp Plan Personnel Camps: IAW clause 452.236-72 Use of Premises, PWS Para 2.9-10:

Provide a plan for camp development, occupation and clean-up and obtain approval prior to any camp development activities.

5 working days prior to camping on NFS lands.

IDIQ PWS

Paragraph 2.14

Clean Equipment Vehicles shall be inspected by the Government prior to entering National Forest.

5 working days prior to commencement of work.

IDIQ PWS

Paragraph 2.15

Work Schedule To notify the government of when the contractor shall be on site performing work.

5 working days prior to commencement of work and upon request thereafter

IDIQ PWS

Paragraph 2.16

Request for Inspection

To notify the government of completion of services.

5 working days prior to demobilizing or submission of invoice.

5. GOVERNMENT FURNISHED PROPERTY

5.1. N/A

6. Appendix:

Appendix 1 PRD_Twin_Creek_II_PCT_Contract_Maps Appendix 2 Damages Table

Wrangell

Petersburg

Juneau

Wrangell

Ketchikan

Petersburg

³ Southeast Alaska

Vicinity Map

Twin Creek II Project Area Contract Items Roads

Item 2Item 3 Item 4

Petersburg

Twin Creek II PCT - Mitkof Island Map Contract Items Young-growth Stands Roads

Fredrick Sound

³

0 2.5 51.25 Miles

Item 1

Legend Contract Items

No thin corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item1

66 ac

0 500 1,000 Feet

0 2 41

Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

Legend Contract Items

No thin corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item1

66 ac

0 500 1,000 Feet

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 2

60 acres

0 500 1,000 Feet

Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 2

60 acres

0 500 1,000 Feet

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 3

17 acres

0 360 720 Feet

Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 3

17 acres

0 360 720 Feet

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 4

107 acres

0 500 1,000 Feet

Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

Legend Contract Items

No-thin Corridors

Roads

Streams Contour 40ft

³ Twin Creek II - Item 4

107 acres

0 500 1,000 Feet

Appendix 2 – Damages Table

Spacing Target

TPA

Minimum Acceptable TPA with no Damages for Deficient Trees

Damages Category 1 (light over-cutting)

Damages Category 2 (moderate over-cutting)

Damages Category 3 (severe over-cutting)

Measured

TPA

Damages per Deficient Tree below Min. Acceptable TPA

Measured

TPA

Damages per Deficient Tree below Min.

Acceptable TPA

Measured

TPA

Damages per Deficient Tree below Min.

Acceptable TPA

10’ X 10’ 436 392 371-391 $2 349-370 $4 >349 $6 12’ X 12’ 303 273 258-272 $3 242-257 $6 >242 $9 14’ X 14’ 222 200 189-199 $4 178-188 $8 >178 $12 16’ X 16’ 170 153 145-152 $5 136-144 $10 >136 $15 18’ X 18’ 134 121 114-120 $6 107-113 $12 >107 $18 20’ X 20’ 109 98 93-97 $8 87-92 $16 >87 $24 22’ X 22’ 90 81 77-80 $10 72-76 $20 >72 $30 24’ X 24’ 76 68 65-67 $12 61-64 $24 >61 $36