4c.Road Maintenance Specifications.pdf

INTEGRATED RESOURCE TIMBER CONTRACT ROAD MAINTENANCE SPECIFICATIONS (02/2020)

DC GREEN GROUSE

STEWARDSHIP

FOREST SERVICE

SPECIFICATIONS FOR

MAINTENANCE OF

ROADS IN

INTEGRATED RESOURCE TIMBER CONTRACTS

PACIFIC NORTHWEST REGION

EM 7730-20

FEBRUARY 2020

INTEGRATED RESOURCE TIMBER CONTRACT

ROAD MAINTENANCE SPECIFICATIONS

SPEC.# DESCRIPTION Date T-803 Snow Removal 02/2020 T-811 Blading 02/2020 T-812 Dust Abatement 02/2020 T-813 Spot Surfacing 02/2020 T-815 Paved Surface Cleaning 02/2020 T-831 Ditch Maintenance 02/2020 T-832 Remove and End Haul Materials 02/2020 T-834 Drainage Structure Maintenance 02/2020 T-835 Roadway Drainage Maintenance 02/2020 T-836 Maintenance for Limited Use 02/2020 T-838 Maintenance for High Clearance Vehicle Use 02/2020 T-839 Maintenance for Project Use 02/2020 T-841 Vegetation Establishment 02/2020 T-842 Cutting Roadway Vegetation 02/2020 T-851 Logging Out 02/2020 T-854 Treatment and Disposal of Danger Trees 02/2020 T-891 Water Supply and Watering 02/2020 T-892 Bituminous Products 02/2020

SUPPORTING DOCUMENTS FOR MAINTENANCE SPECIFICATIONS

DESCRIPTION DATE

Cover Content Preface 02/2020 Cover Pages 02/2020 Intent and Use Guide 02/2020

NO DRAWINGS ACCOMPANY THESE SPECIFICATIONS.

PREFACE

The Pacific Northwest Region of the Forest Service has developed this book for use in the preparation and administration of maintenance requirements included in Integrated Resource Timber Contracts.

Included are the Standard Specifications (Sections) that commonly apply in Integrated Resource Timber Contracts. Conditions and requirements specific to individual projects are identified in the Supplemental Specifications.

Supplemental Specifications which do not change the intent of the parent section may be approved by the Forests. New Standard Specifications or Supplemental Specifications that add to or modify performance requirements of these Standard Specifications shall be approved by the Regional Director of Engineering prior to use.

This book is available from the Supervisor's Office of any National Forest in Region 6.

Maintenance Level Requirements

Maintenance Levels - The following are abbreviated descriptions of maintenance levels:

1. Maintenance Level II - Conditions are suitable for high clearance vehicle travel at prudent driving speeds less than 15 mph. Road is maintained in accordance with Section T-836.

2. Maintenance Level III - Minimum conditions are provided for passenger car use. Surface provides moderately convenient travel at prudent driving speeds between 15 and 25 mph with corresponding surface roughness tolerated. The surface meets the following conditions:

a. Potholes or washboard in wheel tracks normally do not exceed 2 inches in depth and should not be of such frequency that traffic tends to widen traveled way to avoid the deformities.

b. Surface is drained and substantially retains its cross slope or crown.

c. Wheel ruts caused by use shall not be in excess of 3 inches in depth on horizontal curves.

3. Maintenance Level IV - Higher consideration than in Level III is given to comfort and convenience of the passenger car and commercial user at prudent driving speeds above 25 mph. The surface will meet the following conditions:

a. Substantially free of chuckholes, wheel ruts, or washboard corrugations. Surface is drained and retains its cross slope or crown.

b. Berms of loose surfacing caused by use do not generally exist, except on horizontal curves berms up to 2 inches in depth may be present.

4. Maintenance Level V - the highest degree of consideration is given to user comfort and convenience. Roads are commonly paved or continually dust controlled for travel at speeds of nominally 35 mph. Generally, the surface will meet the following conditions:

a. Level IV plus: Surface is consolidated except for limited periods immediately preceding maintenance performance.

b. Berms are not acceptable.

T-811 - BLADING (02/2020) Page 1

811.01 Description

This work consists of surface blading the traveled way to a condition that facilitates traffic and provides proper drainage. Blading includes shaping the crown or slope of travel way, berms, and drainage dips in accordance with this specification. Compaction is required when shown on C(T)5.31#

811.02 Maintenance Requirements

1. Timing - Perform surface blading during the contract period as often as needed to provide conditions stated for the maintenance level of the road.

2. General

a. Blade and shape the existing traveled way and shoulders, including turnouts, to produce a surface which is uniform, consistent to grade, and crowned or cross-sloped as indicated by the character of the existing surface, unless otherwise shown in C(T)5.31#, to at least ½ inch per 1 foot of width, but not more than ¾ inch per 1 foot of width. Thoroughly loosen surfacing material to no less than 2 inches depth or the depth of potholes or corrugations.

Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected but will be considered incidental to blading. Do not scarify to a depth that will cause contamination of the surfacing.

b. Apply water during blading when sufficient moisture is not present to prevent segregation.

Supply, haul, and apply water in accordance with Section T-891.

c. Shape existing native rock or aggregate surfaced drainage dips to divert surface runoff to existing outlet devices, ditches, or discharge locations.

d. Establish a blading pattern which provides a uniform driving surface, retains the surfacing on the roadbed, and provides a thorough mixing of the materials within the completed surface width. Upon final blading, no disturbed rock shall protrude more than 2 inches above the adjacent surface unless otherwise provided in the contract. Remove material not meeting this dimension and place outside the roadbed; do not to obstruct drainage ways or structures. This material may be scattered off the roadbed if there is free drainage.

e. Where DESIGNATED ON THE GROUND, included in C(T)5.31#, SHOWN ON THE DRAWINGS, or as ordered by the Contracting Officer, invasive species of concern prevention practices shall be followed as listed below.

Invasive Species of Concern Prevention Practices

The species of concern there are as follows;

1. Hawkweed sp.

2. Blackberry sp.

3. Tansy ragwort

4. Herb Robert

5. Scotch broom

3. Routine Blading

a. Conform to the dimensions SHOWN ON THE DRAWINGS or designated in the SUPPLEMENTAL SPECIFICATIONS upon completion of blading.

b. Shape roadbed width in excess of the dimensions shown only as needed to provide drainage away from the traveled way. Do not remove established grasses and other vegetation from the excess width except as incidental to providing drainage or unless otherwise provided in the contract.

4. Compaction

Roads requiring compaction will be included in the C(T)5.31#. Unless Compaction Method B is designated in the C(T)5.31#, all traveled ways requiring compaction may be compacted by Method A. Compaction shall commence immediately following blading.

Compaction Method A: Breaking track over full width of traveled way while operating equipment.

Compaction Method B: 7-10 ton pneumatic, steel, or equivalent vibratory roller, operated to cover the full width two (2) times.

T-811 - BLADING (02/2020) Page 2

5. Undercutting

Undercutting roadway back slope is not permitted.

6. Intersections

At intersections, blade the roadbeds of side roads which are not closed or restricted from vehicular use to ensure smooth transitions.

a. Signing, cross ditching in the road surface (traveled way), earth berms, or other devices placed to discourage or eliminate use by passenger cars, are field evidence of road closure or restriction. Roads listed for work under Sections T-835, T-836, T-838, or T-839 are considered restricted.

b. Side roads listed for work under this Section are not restricted.

7. Cleaning of Structures

Do not allow materials resulting from work under this Section to remain on or in structures, such as bridges, culverts, cattle guards, or drainage dips.

8. Berms

Maintain existing berms to the condition of adjacent segments. Do not create new berms.

9. Smooth Blading

Smooth blading may be used as an interim measure to remove loose surfacing material from the wheel paths. Store removed materials in a recoverable windrow until blade processing as described in this section is feasible. Watering will not be required for smooth blading.

Accomplish smooth blading without distorting the existing cross-slope or crown of the traveled way.

Move and store loose surfacing materials on the high side of super-elevated curves and sections with uniform inslope or outslope. In crowned sections, store the material on either or both sides as elected. Windrow and place stored materials to provide not less than 12 feet of smooth traveled way on one-lane segments, or 20 feet of smooth traveled way on two-lane segments, or segments with turnouts. Place holes through windrows for drainage every 500 feet or less to provide drainage

T-811 - BLADING (02/2020) Page 1

811.01 Description

This work consists of surface blading the traveled way to a condition that facilitates traffic and provides proper drainage. Blading includes shaping the crown or slope of travel way, berms, and drainage dips in accordance with this specification. Compaction is required when shown on C(T)5.31#

811.02 Maintenance Requirements

1. Timing - Perform surface blading during the contract period as often as needed to provide conditions stated for the maintenance level of the road.

2. General

a. Blade and shape the existing traveled way and shoulders, including turnouts, to produce a surface which is uniform, consistent to grade, and crowned or cross-sloped as indicated by the character of the existing surface, unless otherwise shown in C(T)5.31#, to at least ½ inch per 1 foot of width, but not more than ¾ inch per 1 foot of width. Thoroughly loosen surfacing material to no less than 2 inches depth or the depth of potholes or corrugations.

Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected but will be considered incidental to blading. Do not scarify to a depth that will cause contamination of the surfacing.

b. Apply water during blading when sufficient moisture is not present to prevent segregation.

Supply, haul, and apply water in accordance with Section T-891.

c. Shape existing native rock or aggregate surfaced drainage dips to divert surface runoff to existing outlet devices, ditches, or discharge locations.

d. Establish a blading pattern which provides a uniform driving surface, retains the surfacing on the roadbed, and provides a thorough mixing of the materials within the completed surface width. Upon final blading, no disturbed rock shall protrude more than 2 inches above the adjacent surface unless otherwise provided in the contract. Remove material not meeting this dimension and place outside the roadbed; do not to obstruct drainage ways or structures. This material may be scattered off the roadbed if there is free drainage.

e. Where DESIGNATED ON THE GROUND, included in C(T)5.31#, SHOWN ON THE DRAWINGS, or as ordered by the Contracting Officer, invasive species of concern prevention practices shall be followed as listed below.

2. Blackberry sp.

3. Tansy ragwort

3. Routine Blading

a. Conform to the dimensions SHOWN ON THE DRAWINGS or designated in the SUPPLEMENTAL SPECIFICATIONS upon completion of blading.

b. Shape roadbed width in excess of the dimensions shown only as needed to provide drainage away from the traveled way. Do not remove established grasses and other vegetation from the excess width except as incidental to providing drainage or unless otherwise provided in the contract.

4. Compaction

Roads requiring compaction will be included in the C(T)5.31#. Unless Compaction Method B is designated in the C(T)5.31#, all traveled ways requiring compaction may be compacted by Method A. Compaction shall commence immediately following blading.

Compaction Method A: Breaking track over full width of traveled way while operating equipment.

T-811 - BLADING (02/2020) Page 2

5. Undercutting

Undercutting roadway back slope is not permitted.

6. Intersections

At intersections, blade the roadbeds of side roads which are not closed or restricted from vehicular use to ensure smooth transitions.

a. Signing, cross ditching in the road surface (traveled way), earth berms, or other devices placed to discourage or eliminate use by passenger cars, are field evidence of road closure or restriction. Roads listed for work under Sections T-835, T-836, T-838, or T-839 are considered restricted.

b. Side roads listed for work under this Section are not restricted.

7. Cleaning of Structures

Do not allow materials resulting from work under this Section to remain on or in structures, such as bridges, culverts, cattle guards, or drainage dips.

8. Berms

Maintain existing berms to the condition of adjacent segments. Do not create new berms.

9. Smooth Blading

Smooth blading may be used as an interim measure to remove loose surfacing material from the wheel paths. Store removed materials in a recoverable windrow until blade processing as described in this section is feasible. Watering will not be required for smooth blading.

Accomplish smooth blading without distorting the existing cross-slope or crown of the traveled way.

Move and store loose surfacing materials on the high side of super-elevated curves and sections with uniform inslope or outslope. In crowned sections, store the material on either or both sides as elected. Windrow and place stored materials to provide not less than 12 feet of smooth traveled way on one-lane segments, or 20 feet of smooth traveled way on two-lane segments, or segments with turnouts. Place holes through windrows for drainage every 500 feet or less to provide drainage

T-813 - SPOT SURFACING (06/2019) Page 1

813.01 Description

This work consists of placing surface aggregate as DESIGNATED ON THE GROUND, or as ordered by the Contracting Officer. It includes preparing the area, furnishing, hauling, and placing all necessary materials and other work necessary to blend with the adjacent road cross section.

813.02 Materials

1. Materials will be Government-furnished when stated in the SUPPLEMENTAL SPECIFICATIONS.

2. Materials furnished by the Contractor shall conform to the gradation and quality requirements of Section 703 of the "Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects FP-14 U.S. Customary Units" and FS supplements to the FP-14.

3. All materials transported onto National Forest System land shall be free of invasive species of concern. Written documentation of methods used to determine the invasive species of concern-free status of any and all materials furnished by the Contractor shall be submitted for approval to the Contracting Officer before transport of any materials onto NFS System land.

The Contracting Officer shall have 5 days, excluding weekends and Federal holidays, to review the methods and inspect the materials after the required written documentation is provided by the Contractor. After satisfactory review and inspection or after 5 days without review and inspection, the Contractor may transport the material onto National Forest System land. Material receiving unsatisfactory review and inspection shall not be transported onto National Forest System land.

Material or methods appropriate for establishing invasive species of concern free status for the invasive species of concern are listed below.

Invasive Species of Concern

1. Hawkweed sp.

2. Blackberry sp.

3. Tansy ragwort

Appropriate Prevention Practices

N/A

813.03 Maintenance Requirements

1. Thoroughly loosen the area to be surfaced to a minimum depth of 1 inch prior to placement of aggregate.

2. Mixing and Placing

When scheduled coincidentally with work under Section T-811, and included in the SUPPLEMENTAL SPECIFICATIONS, mix surfacing and existing aggregate with water until a uniform mixture is obtained prior to final shaping and compaction.

Otherwise, spread the material on the prepared area in layers no more than 4 inches in depth.

When more than one (1) layer is required, shape and compact each layer before the succeeding layer is placed. Upon completion, the surfacing shall reasonably conform to the adjacent cross section and provide smooth transitions in the road profile.

3. Compaction Methods

Compaction Method A: Breaking track while operating equipment on the traveled way.

Either Method A or B may be used unless Method B is designated in C(T)5.31#.

T-832 - REMOVE AND ENDHAUL MATERIALS (02/2020) Page 1

832.01 Description

Work consists of loading, hauling, and placing of slide, slough, or excess materials such as rock, soil, vegetation, and other materials to designated disposal sites.

832.02 Maintenance Requirements

1. Remove, end haul, and dispose of excess materials generated by work under other Sections of this contract.

2. Remove the slide and slough materials to a height of approximately 6 feet vertically above the road surface, upslope from the roadbed, and not more than 3 feet vertically below the road surface down slope from the roadbed. Dispose of material at designated sites as shown on the CONTRACT AREA MAP, identified in SUPPLEMENTAL SPECIFICATIONS, or as ordered by the Contracting Officer.

3. Reshape the slope which generated the slide material as nearly as practical to its original condition by equipment operating from road surface. Reshaping of roadside ditches in slide area shall be in accordance with Section T-831.

4. When approved by the Contracting Officer, fill slumps by compacting selected materials into roadway depressions. Compaction is by Placement Method 2.

5. Place all materials in disposal sites as specified in the SUPPLEMENTAL SPECIFICATIONS, as SHOWN ON THE DRAWINGS, as shown on the CONTRACT AREA MAP, or as ordered by the Contracting Officer.

a. Placement Method 1 - Side Casting and End Dumping: Material may be placed by side casting and end dumping. Where materials include large rocks, provide a solid fill by working smaller pieces and fines into voids. Shape the finished surfaces to drain.

b. Placement Method 2 - Layer Placement: Step or roughen surfaces on which materials are to be placed prior to placing any material. Place materials in approximately horizontal layers no more than 12 inches thick. Compact each layer by operating hauling and spreading equipment over the full width of each layer.

6. Repair any damage to existing aggregate or pavement surfaces.

T-831 - DITCH MAINTENANCE (20/2020) Page 1

831.01 Description

This Section provides for routine maintenance of various types of ditches to provide drainage which is unobstructed, as shown on C(T)5.31# or as Designated on the ground by the Contracting Officer.

831.02 Maintenance Requirements

1. Maintain ditches by removing rock, soil, wood, and other materials. Maintained ditches shall function to meet the intent of the original design.

2. Undercutting backslopes during ditch maintenance operations is not permitted.

3. Suitable material up to 4 inches in greatest dimension removed from the ditches may be blended into existing native road surface and shoulder or placed in designated berm.

4. Do not blend material from ditch cleaning operations into aggregate surfaced roads. Do not blade material across aggregate or bituminous surfaced roads, unless approved in writing by the Contracting Officer.

5. Remove excess materials temporarily stored on the ditch slope or edge of the shoulder daily. Haul excess material to designated waste area under Section T-832.

6. Remove limbs and wood chunks in excess of 12 inches in length or 3 inches in diameter from ditches and place outside the roadway.

7. Clean paved surfaces of all materials resulting from ditch maintenance work.

8. Shape lead-off ditches to drain away from the traveled way.

9. Invasive species of concern prevention practices shall be followed as listed below, and where:

a. Designated on the Ground by the Contracting Officer,

b. Included in C(T)5.31#,

c. Shown on the Drawings, or

d. As ordered by the Contracting officer.

2. Blackberry sp.

3. Tansy ragwort

T-834 - DRAINAGE STRUCTURE MAINTENANCE (02/2020) Page 1

834.01 Description

This work consists of cleaning and reconditioning culverts and other drainage structures.

834.02 Maintenance Requirements

1. Clean drainage structures, inlet structures, culverts, catch basins, and outlet channels specified in the SUPPLEMENTAL SPECIFICATIONS. Clean catch basins by removing the material within the area

SHOWN ON THE DRAWINGS.

2. Clean the transition from the ditch line to the catch basin 10 feet or more from the catch basin.

Clean outlet channels and lead-off ditches 6 feet or more. Remove and place debris and vegetation to not enter the channel or ditch, or obstruct traffic or haul debris and vegetation to a designated disposal area in accordance with Section T-832 when shown on the CONTRACT AREA MAP, when specified in the SUPPLEMENTAL SPECIFICATIONS, or as ordered by the Contracting Officer,

3. Hydraulic flushing of drainage structures is not allowed unless provided for in the SUPPLEMENTAL

SPECIFICATIONS.

4. Cleaning and reconditioning are limited to the first 3 feet of inlet and outlet, determined along the top of the structure. Recondition culvert inlet and outlet by field methods such as jacking out or cutting away damaged metal which obstructs flow. Treat cut edges with a zinc rich coating, in accordance with AASHTO M 36M and ASTM A 849.

5. Where DESIGNATED ON THE GROUND, included in C(T)5.31#, shown on the CONTRACT AREA MAP, or as ordered by the Contracting Officer, invasive species of concern prevention practices shall be followed as listed below.

2. Blackberry sp.

3. Tansy ragwort

T-835 - ROADWAY DRAINAGE MAINTENANCE (02/2020) Page 1

835.01 Description

This work consists of providing post-haul drainage on roads.

835.02 Maintenance Requirements

1. Drainage

a. Upon completion of work, shape the roadway to provide for the removal of surface water. The roadway need not be passable to vehicles. Repair and reinstall water bars, barriers or berms existing prior to the Contractor's operation. Areas where water is ponded by existing centerline profile sags in through cuts may be left untreated.

b. Continuous blade shaping of the roadbed is not required under this specification.

c. Work to be done at staked locations shall be as indicated on the stake and/or stated in

SUPPLEMENTAL SPECIFICATIONS:

d. Any of the following methods are acceptable for use at eroded or rutted locations:

Method A: Outsloping the roadbed at not less than ½ inch per foot of width.

Method B: Insloping the roadbed at not less than ½ inch per foot of width.

Method C: Water bar roadbed at locations staked on the ground and construct as SHOWN ON THE DRAWINGS or as included in SUPPLEMENTAL SPECIFICATIONS.

e. Drainage structures located in through-fills and natural watercourses shall be fully functional without obstructions, including inlet and outlet channel within 20 feet of the structure.

f. Either clean culverts and other fabricated structures to provide drainage from road ditches and make the ditch functional or provide water bar(s) across the roadbed. Removed structures shall become Contractor's property to be removed from NFS land. Remove and replace any Contractor-installed temporary drainage structures with a water bar.

2. Slides, Slumps and Slough

a. Slides and slough may be left in place, provided they do not potentially impound water or divert water from watercourses. Reshape the various surfaces to provide drainage.

b. Provide drainage to effectively decrease or eliminate the entry of surface water into slides, slumps, and roadbed surface cracks. Place berms, waterbars or ditches as needed to intercept and remove runoff water from the roadbed. Surface seal cracks by covering over with native soil materials to prevent additional water entry and compact with equipment tires.

3. Entrance Devices

Upon completion of work, replace entrance devices to effectively eliminate access by motorized vehicles having four (4) wheels and a width in excess of 50 inches or by all motorized wheeled vehicles, as directed by the Contracting Officer.

4. Seeding

Seed and fertilize all disturbed areas in accordance with requirements in Section T-841.

T-839 - MAINTENANCE FOR PROJECT USE (02/2020) Page 1

839.01 Description

Work consists of providing minimum access required for Contractor's operations and associated Forest Service contract administration while preventing unacceptable resource or road damage.

839.02 Maintenance Requirements

1. Contractor is authorized to perform the following maintenance to provide vehicle passage and drainage:

a. Removing log, earth, and rock barriers and/or improving existing road junctions to enable vehicle access as mutually agreed.

b. Smoothing or filling existing cross ditches and water bars.

c. Installing Contractor-furnished culverts or other temporary drainage structures for shallow stream crossings, as approved by the Contracting Officer.

d. Removing brush, fallen trees, rocks, and other materials from the traveled way and other locations that interfere with needed maintenance:

i. Place all removed materials away from drainages.

ii. Limb and remove timber which meets utilization standards or deck at locations approved by the Contracting Officer. Scatter other woody materials, including limbs, off and below the roadbed without creating concentrations.

e. Clean and recondition drainage structures in accordance with Section T-831 and Section T-834.

f. Reposition or ramp over slough and slides to provide adequate width of traveled way material.

g. Provide traveled way drainage above slumps and seal cracks in slump area. Ramp the slumps on both ends into undisturbed roadbed to provide usable width unless otherwise ordered by the Contracting Officer.

2. During use, the traveled way shall not channel water along the road. Prior to periods of anticipated rains and runoff, perform the following work:

a. Shape the traveled way and roadbed to drain.

b. Reinstall removed cross ditches and water bars and provide any additional drainage structures necessary to offset changes through use and maintenance.

c. Perform work outlined in 839.02 1 (e), (f), and (g).

d. During periods of non-use, replace original barrier or provide and maintain standard MUTCD

Type 3 barricades unless alternate barriers are approved by the Contracting Officer.

839.03 Post-Haul Requirements

1. Upon completion of project use, perform work described in the requirements of 839.02 2 and in accordance with 839.03 2 and 3 or as otherwise provided for in the SUPPLEMENTAL SPECIFICATIONS or the Road Listing.

2. Roads designated in the Road Listing to be blocked shall conform to the requirements of Section T-

835. Unless otherwise approved by the Contracting Officer, remove Contractor-installed temporary structures from National Forest System land. Associated commercially-obtained materials shall remain the property of the Contractor.

3. Remove or reshape Contractor improvements at road junctions, as approved by the Contracting Officer at the time of improvement.

T-842 - CUTTING ROADWAY VEGETATION (02/2020) Page 1

842.01 Description

This work consists of cutting all vegetative growth on roadway surfaces and roadsides, including trees and other vegetation less than 4 inches in diameter measured 6 inches above the ground.

842.02 Maintenance Requirements

1. General

a. Cut brush, trees, and other vegetation within each area treated to a maximum height of 6 inches above the ground surface or obstruction such as rocks or existing stumps. When work is performed under this Section, remove all limbs which extend into the treated area, or over the roadbed, to a height of 14 feet above the traveled way surface elevation.

b. Items to remain will be DESIGNATED ON THE GROUND.

c. Work may be performed either by hand or mechanically unless specifically shown in C(T)3.1#.

Self-propelled equipment is not allowed on cut and fill slopes or in ditches.

d. Correct damage to boles of standing trees caused by Contractor's operation either by treatment with a commercial nursery sealer or by removing the tree as directed by the Contracting Officer.

e. Limb trees within the cutting limits which are over 4 inches in lieu of cutting, measured at 6 inches above the ground.

f. When trees are limbed, cut limbs within 4 inches of the tree bole.

2. Cutting Side Vegetation

a. Show the width of vegetation to be removed in C(T)5.31#.

b. Unless otherwise included in the SUPPLEMENTAL SPECIFICATIONS or DESIGNATED ON THE GROUND:

i. Commence work at the edge of the traveled way and proceed away from the road centerline.

ii. Roads without a defined traveled way: The starting point for cutting will be marked on the ground or defined in the SUPPLEMENTAL SPECIFICATIONS.

c. The points for establishing cutting limits are as follows:

i. Fill and daylighted (wide roadbed) section cutting commences at the edge of the traveled way and proceeds away from the road center line.

ii. Drainage ditched section cutting commences at the bottom of the existing ditch and proceeds away from the road center line. Cutting on ditch foreslopes is not required.

iii. Unditched section cutting commences at the intersection of the cutbank and the roadbed and proceeds away from center line.

d. Provide transitions between differing increments of cutting width. Accomplish transitions in a taper length of not less than 50 feet nor more than 70 feet.

3. Debris

a. Materials resulting from the cutting operation in excess of 12 inches in length or 3 inches in diameter is not allowed to remain on roadway slopes within the treated area, in ditches, or within water courses.

b. Remove limbs and chunks in excess of 3 inches in any dimension from the traveled way and shoulders.

c. Materials may be scattered down slope from the roadbed, outside of the work area and drainages unless otherwise listed in D. Invasive Species of Concern.

4. Invasive Species of Concern

Where DESIGNATED ON THE GROUND, included in C(T)5.31#, shown on CONTRACT AREA MAP, or as ordered by the Contracting Officer invasive species of concern prevention practices shall be followed as listed below.

2. Blackberry sp.

3. Tansy ragwort

T-842 - CUTTING ROADWAY VEGETATION (02/2020) Page 2

T-851 - LOGGING OUT (02/2020) Page 1

851.01 Description

This work consists of removal of fallen trees and snags which encroach within 3 feet of the roadbed on both sides.

851.02 Maintenance Requirements

1. Limb and remove timber which meets Utilization Standards in A(T)2 or deck at locations designated by the Contracting Officer.

2. Limb non-merchantable material that was cut into lengths for handling. Deck outside ditches and drainages, off the traveled way and turnouts or at staked locations. The clearing width is to the edge of the roadbed for public use roads, except limited use roads. The clearing width for limited use roads is shown in T-836, T-838, or T-839, as applicable.

3. Notwithstanding B(T)2.3, blowdown timber outside Contract Area required to be removed, which meets Utilization Standards in A(T)2 and when designated by the Contracting Officer, is Included Timber subject to requirements of B(T)2.2.

4. Do not leave woody debris and slash in excess of 12 inches in length or 3 inches in diameter, or concentrations which may plug ditches or culverts, in ditches, drainage channels, or on backslopes, traveled way, shoulders, or turnouts.