Shields River Road_Special Project Specifications.pdf

SPECIAL PROJECT SPECIFICATIONS

For

SHIELDS RIVER ROAD #844

RECONSTRUCTION

USDA FOREST SERVICE

NOTHERN REGION

GALLATIN NATIONAL FOREST

DJ&A, P.C.

Engineers - Planners - Surveyors

3203 So. Russell St Missoula, MT 59801

February 2009

DIVISION 100 GENERAL REQUIREMENTS

Section Page

101 TERMS, FORMAT, AND DEFINITIONS

102 BID, AWARD, AND EXECUTION OF CONTRACT

103 SCOPE OF WORK

104 CONTROL OF WORK

105 CONTROL OF MATERIAL

106 ACCEPTANCE OF WORK

107 LEGAL RELATIONS AND RESPONSIBILITY TO THE PUBLIC

108 PROSECUTION AND PROGRESS

109 MEASUREMENT AND PAYMENT

151 Mobilization

152 Construction Survey and Staking 153 Contractor Quality Control 155 Schedules for Construction Contracts 156 Public Traffic 157 Soil Erosion Control

201 Clearing and Grubbing 203 Removal of Structures and Obstructions 204 Excavation and Embankment 262 Reinforced Soil Embankment

303 Road Reconditioning 320 Stockpiled Aggregates 321 Major Aggregate Courses

403 Hot Asphalt Concrete Pavement 409 Asphalt Surface Treatment

622 Rental Equipment 625 Turf Establishment 633 Permanent Traffic Control 640 Road Closure Devices 641 Development of Pits & Quarries 642 Pre-cast Double Unit Vault Toilet 648 Stream Simulation

703 Aggregate 705 Rock 714 Geotextile And Geocomposite Drain Material 718 Traffic Signing And Marking Material 725 Miscellaneous Material

Preface

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of National Forest System Roads.

Section 101. Terms, Format and Definitions

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-03 to Transportation Acquisition Regulations (TAR).

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association

Mine Safety and Health Administration

National Institute of Standards and Technology

National Electrical Safety Code

West Coast Lumber Inspection Bureau

Add the following to (b) SI Symbols:

mp Milepost ppm Part Per Million

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

Contractor--The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “purchaser”.

Culvert--No definition.

Right-of-Way--A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Adjustment in Contract Price--“Equitable adjustment,” as used in the Federal Acquisition

Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change--“Change” means “change order” as used in the Federal Acquisition Regulations, or

“design change” as used in the Timber Sale Contract.

Design Quantity-- “Design quantity” is a Forest Service method of measurement from the FS-

96 Forest Service Specifications for the Construction of Roads and Bridges. Under these FP specifications this term is replaced by the term “Contract Quantities”.

Forest Service--The United States of America, acting through the Forest Service, U.S.

Department of Agriculture.

Neat Line--A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road--Temporary construction access built along the route of the project.

Purchaser--The individual, partnership, joint venture, or corporation contracting with the

Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse--A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order--An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36

CFR, part 260.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

Utilization Standards--The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

R ig h t o f

W a y

R o a d s id e R o a d s id e

C le a ri n g W id th

R o a d w a y

C le a ri n g

L im it X

Y

G ro u n d L in e

T ra ve le d W a y

C L B e rm

S u rf a ce

C o u rs e B a s e

C o u rs e

F ill

S lo p e

B a c k

S lo p e

D ra in a g e D itc h

G ro u n d

L in e

S u b g ra d e

R o a d B e d

S h a p e s a n d d im e n s io n s w ill v a ry t o f it lo ca l c o n d iti o n s.

S e e d ra w in g s fo r ty p ic a l s e ct io n s.

X a n d Y d e n o te c le a rin g o u ts id e o f ro a d w a y.

N o te

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

Section 102. Bid, Award and Execution of Contract

Delete Section 102 in its entirety.

Section 103. Scope of Work

Delete all but subsection 103.01 Intent of Contract.

Section 104. Control of Work

Section 104 Control of Work: Delete sections 104.01, 104.02, and 104.04.

104.03 Specifications and Drawings.

(c) As-Built-Plans. Furnish one set of as built plans to the Government. The Government will provide one set of contract plans to be used exclusively for recording the as-built details of the project. Use red pencil or red ink to record the information described below.

Note all additions or revisions to the location, character, and dimensions of the prescribed work shown on the contract plans. Line out all details shown that are not applicable to the completed work. Check off details shown that were incorporated into the completed work without change.

Retain the plans at the project site and, as work progresses, continuously update them to reflect the as-built details. Upon request, make the plans available to the CO to review for compliance with these specifications.

As a minimum, show the following types of changes on the as-built plans:

(1) Typical section(s)

(a) Revisions in dimensions

(b) Revisions in materials

(2) Plan and profile

• Revisions to the alignment

• Changes in the construction limits

• Revisions in location, type, and grade of road approaches

• Location and type of utilities

• Location, size, and type of underdrains

• Skew of culverts

• Channel changes

• Location of monuments and permanent references

• Elevations for all aerial and underground crossings of utilities

• Location, length, and type of fencing

• Revisions to grades, elevations, and stationing of intersection PIs

• Equations

• Culvert diameter, length, type, and stationing. On culvert extensions, indicate the length of the existing pipe and the length of the extension.

• Location, length, stationing, and type of retaining walls

• Location, length, stationing, and end treatment of guardrail

(3) Bridge

(a) Stationing of bridge ends

(b) Revisions to footing and seal elevations

(c) Pile length, size, type, and tip elevation

(d) Any changes in plan or dimensions including any major changes in reinforcing

(4) Miscellaneous

(a) Revisions to parking areas or turnouts

(b) Final location, type and length of curbs, sidewalks, etc.

Furnish the as-built working plans to the CO before the final inspection. Correct all details found during the final inspection that are not shown on the as-built plans and return to the CO within 5 working days.

Add the following subsection:

104.06 Use of Roads by Contractor

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

Section 105. Control of Material

105.02 Material Sources.

(a) Government-provided sources. Add the following:

Comply with the requirements of 30 CFR 56, subparts B and H. Use all suitable material for aggregate regardless of size unless otherwise designated. When required, re-establish vegetation in disturbed areas according to Subsection 105.03 and Section 625.

Government-provided sources for this project are identified as follows:

SE ¼ Section 26, T5N, R10 E – Sunlight Road Pit

There is no charge for material taken from the Sunlight Road Pit.

Materials available from the government provided source includes the following:

Unclassified borrow

Permeable backfill

Aggregate base

Subbase

Aggregate surface course

Excavating, screening, processing, sorting, crushing, stockpiling, hauling and handling of materials will be required in order to obtain this material from the designated source.

Work associated with the Deep Creek Culvert Replacement Contract (Sta. 291+50) will be concurrent with this project. The Sunlight Road Pit will be the primary material source for the Deep Creek Project. Coordinate as necessary all pit activities with Price

Construction, Contractor for the Deep Creek Project.

Ron Price

Price Construction

22720 U.S. Highway 93

Arlee, MT 59821

(406) 370-4347

No payment will be allowed for pit coordination, usage, delays, scheduling, or other impacts to the contractors operations as a result of the existing contract for the Deep

Creek Culvert Replacement. Contractor is solely responsible to schedule and coordinate all activities with the existing contract with Price Construction.

(b) Contractor-located sources. Add the following:

No riprap is available from the government-provided source. Obtain all riprap from an established commercial source.

Aggregate for surface treatment (chip sealing) and hot asphalt concrete pavement are not available from the government-provided source. Obtain all aggregate for surface treatment (chip sealing) and hot asphalt concrete pavement from an established commercial source.

105.03 Material Source Management. Add the following:

Provide a source management plan to the CO 30 days prior to beginning work in the government-provided source. Include the proposed work plan, topsoil salvage, stockpile areas and procedures, disposal areas and reclamation plan for the disturbed areas. Contractor is responsible for all material source reclamation in the government-provided source.

105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. The Government is not obligated to make reimbursement for the cost of producing these materials.

Section 106. Acceptance of Work

106.01 Conformity with Contract Requirements.

Delete Subsection 106.01 and substitute the following:

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is more strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the

Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to

106.05 inclusive. The primary method of acceptance is specified in each Section of work.

However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove and replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted, at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

(1) Sampling method;

(2) Number of samples;

(3) Sample transport;

(4) Test procedures;

(5) Testing laboratories;

(6) Reporting;

(7) Estimated time and costs; and

(8) Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program.

Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol.

If the validity of the Government test results cannot be determined, the Contractor and

Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

(1) Have the work accepted at a reduced price; or

(2) Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

Delete subsection 106.07.

Section 107. Legal Relations and Responsibility to the Public

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following:

“except as provided in Subsection 106.07”.

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

Section 108. Prosecution and Progress

Delete Section 108 in its entirety.

Section 109. Measurement and Payment

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

109.03 Weighing Procedures and Devices.

c) Project weighing system. Add the following::

Manual scales may be used if approved in writing by the CO and if the method of weighing meets all other contract requirements.

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Add the following Subsection:

109.10 Methods of Measurement

One of the following methods of measurement for determining final payment is DESIGNATED

IN THE SCHEDULE OF ITEMS for each PAY ITEM:

(a) Designed Quantities (DQ). These quantities denote the final number of units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units DESIGNATED IN THE SCHEDULE OF ITEMS may be authorized under any of the following conditions:

(1) Changes in the work authorized by the CO.

(2) A determination by the CO that errors exist in the original design that cause a

PAY ITEM quantity to change by 15 percent or more.

(3) A written request submitted to the CO showing evidence of errors in the original design that cause the quantity of a PAY ITEM to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is in error.

(b) Stake Quantities (SQ). These quantities are determined from staked measurements prior to construction.

(c) Actual Quantities (AQ). These quantities are determined from measurements of completed work.

(d) Vehicle Quantities (VQ). These quantities are measured or weighed in hauling vehicles.

(e) Lump Sum Quantities (LSQ). These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job.

Section 151. MOBILIZATION

Description

151.01 Replace this section with the following:

This work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site and de-mobilizing.

Mobilization includes the obtaining of permits, insurance, and bonds.

Coordinate all activities with Park County.

Provide a space in the contractor work trailer, to include a table and chair, for the government inspector.

Payment

151.03 Basis. Add the following:

Include all costs associated with the cleaning of equipment in the unit price bid for

Mobilization.

No separate payment will be made for providing accommodations in the contractor work trailer for the government inspector. Include all costs associated with this requirement in the unit cost for mobilization.

Section 152. Construction Survey and Staking

Construction Requirements

Delete this entire section and replace with the following:

Description

152.01 Project construction staking will be provided by the government.

Construction Requirements

152.02 General.

(a) Government furnished information. The Government will furnish the following data relating to horizontal and vertical alignment and theoretical slope stake catch points, and other design data:

(1) Computer listings containing horizontal alignment, vertical profile, superelevation, excavation and embankment slope ratios, and earthwork quantities;

(2) Computer generated construction staking notes showing theoretical slope stake catch points and reference points;

(3) X, Y, Z coordinates (horizontal and vertical control points);

(4) X, Y, Z coordinates (subgrade centerline and shoulders);

(5) X, Y, Z coordinates (top of aggregate base centerline and shoulders); and

(6) Plotted cross sections (earthwork).

Provide immediate notification of apparent errors in the initial staking or in the furnished data.

The following items will be staked once by the government:

Roadway Centerline

Slope Stakes and references

Clearing and grubbing limits

Grade finishing stakes at centerline and shoulders for top of subbase and top of the aggregate base course or aggregate surfacing course

Culverts

Box Culvert

Bridge

Approach Roads

Guardrail

Irrigation Ditch

Cattleguards

Riprap

Material source quarry (control, limits)

Closure gates

Trailhead area (control, limits, toilet, fence)

Fences (already completed)

Stream realignments

Special ditches

Signs

Preserve all initial reference, control points and construction stakes. After beginning construction, replace all destroyed or disturbed initial reference or control points set by the government necessary to the work at the contractor’s sole expense.

Remove and dispose of all flagging, lath, stakes, and other staking material after the project is complete. Remove visible portions of brushes if used to mark grade finishing stakes.

Section 153. Contractor Quality Control

153.04 Records.

Delete all but the first paragraph.

Section 155. Schedules for Construction Contracts

155.04 Critical Path Method (CPM). Delete this Subsection in its entirety.

Section 156. Public Traffic

156.03 Accommodating Traffic During Work.

Delete the following from the last paragraph:

according to Subsection 106.07(b)

Provide a project traffic control plan to the CO at least 20 calendar days prior to beginning work.

Schedule construction operations to limit delays to 20 minute periods on Shields River Road.

Provide notice to the CO at least 14 calendar days prior to implementing delays or at any time a work schedule change is anticipated.

Immediately open the road to emergency vehicles.

Coordinate all work with the Deep Creek Culvert Replacement project at the end of this project

(291+50).

156.04 Maintaining Roadways During Work.

(a) Add the following:

Do not construct detours outside of the clearing limits or use alternate route detours without the approval of the CO.

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

Measurement and Payment

156.10 Add the following:

No separate payment will be made for the traffic control plan or the coordination, delays, or other impacts to the contractors operations as a result of the existing contracts on this road.

Section 157 SOIL EROSION CONTROL

Materials

157.02 Add the following:

Provide bales, and wattles from a certified noxious weed free source

Construction Requirements

157.03 General. Delete the entire subsection and replace with the following:

Prior to the start of construction, submit a written plan that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction.

Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control. An alternate erosion control plan with all necessary permits may be submitted 30 days before intended use.

Incorporate all permanent erosion control features into the project at the earliest practicable time, as outlined in the approved plan.

When erosion control measures are not functioning as intended, immediately take corrective action.

157.11 Temporary Turf Establishment. Delete this entire subsection.

Measurement

157.15 Add the following:

“Quantities shown for item 15707 Bales, Straw are to be stockpiled at the project sites for the discretionary use of the CO and are in addition to any bales that the Contractor intends to incorporate into the project as a part of the permanent and temporary erosion control measures as required under this specification.”

Section 201 Clearing and Grubbing

Material

201.02 Delete: Tree wound dressing material reference.

201.03 General.

Delete the last sentence.

201.04 Clearing. Delete paragraph (d)

201.06 Disposal. Delete the first sentence of this subsection and substitute the following:

All merchantable timber within the areas to be cleared on either private or Government land will remain the property of the landowners.

(a) Decking. Remove brush from decks. Deck logs on each owner's property adjacent to the road in locations suitable for loading by others with self-loaders as directed by the CO. Cut material into lengths not exceeding 30 feet, and remove all limbs. Logs in log decks are to be stable and free of brush and soil.

(b) Piling and burning. Remove or haul construction slash to the Sunlight Road Pit and pile in locations designated by the CO for burning. Place and construct piles so future burning will not damage remaining trees. Keep piles reasonably free of dirt from stumps. Cut un-merchantable logs into lengths of less than 20 feet. Burn in accordance with 203.05 (b).

Section 203. Removal of Structures and Obstructions

Description

203.01.

Delete and replace with the following:

This work consists of salvaging, removing, and disposing of fences, structures, pavements, culverts, irrigation structures, and other obstructions.

203.05 Disposing of Material.

(a) Remove from project. Add the following:

All materials designated for removal under this contract are considered unsalvageable and become the property of the Contractor. Dispose of all materials off of National Forest System

Lands in an environmentally safe manner in accordance with all State and Federal requirements.

(b) Burn.

Delete the last sentence and add the following:

Dispose of unburned material by burying in the Sunlight Road Pit as directed by the CO.

Section 204. Excavation and Embankment

Materials

204.03 Add the following:

Permeable Backfill 703.04

204.12 Ditches. Add the following:

Relocation irrigation ditches as shown on the plans. Form the irrigation ditches by plowing or using other acceptable methods to produce a continuous ditch. Place all excavated material on the downhill side so the bottom of the ditch is approximately 18 inches below the crest of the loose material. Clean the ditch using a hand shovel, ditcher, or other suitable method. Shape to provide a continuous flow without overflow. Construct to match the existing irrigation ditches as much as possible.

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

(d) Finishing. Remove all material larger than 6 inches from the top 6 inches of the roadbed.

Finish the roadbed to be smooth and uniform, and shaped to conform to the typical sections.

Remove unsuitable material from the roadbed and replace it with suitable material. Finish roadbeds to within ±0.20 feet of the roadbed width for the paved roadway section and ±0.40 for the gravel roadway section, ±0.10 feet of the finished grade, ±0.20 feet of the centerline alignment and within 3% of the excavation and embankment slopes. Finish ditch cross-sections to within ±0.20 feet of the staked line and grade.

Ensure that the subgrade is visibly moist during shaping and dressing. Scarify to 6 inches below the bottom of low sections, holes, cracks, or depressions and bring back to grade with suitable material. Maintain proper ditch drainage.

204.14 Disposal of Unsuitable or Excess Material.

Delete the text of the first paragraph and substitute the following:

Dispose of unsuitable or excess material at the Sunlight Road Pit as directed by the CO or legally off of the project.

Section 262. Reinforced Soil Embankment

Description

262.01. This work consists of constructing reinforced soil embankments.

Material

262.02. Conform to the following Subsections:

Geogrid, category 1,2,3,4,5,or 6 714.03

Structural backfill 704.04

Select granular backfill 704.10

Reinforcing mesh 720.01(h)

262.03 Excavation.

Perform the work under Section 209. Grade the foundation for a width equal to the length of reinforcing elements plus 18 inches. Where the embankment is set on a rocky foundation, place 6 inches of select granular backfill under the geogrid or reinforcing mesh. Dispose of unsuitable or excess excavation material according to Subsection 204.14.

262.04 Reinforcing Elements.

Before beginning work, submit a work plan for acceptance. Allow at least 3 days for acceptance.

Include procedures for stretching and staking the geogrid.

Place soil reinforcing elements at the specified elevation and alignment. Orient the reinforcing elements so that the maximum tensile strength available is in the direction of specified primary reinforcement.

Do not splice reinforcement elements in the primary direction. Overlap geogrids three ribs in the direction transverse to the primary direction, and hold together with hog rings or other approved methods. Overlap reinforcing mesh one rib in the direction transverse to the primary direction.

Prevent wrinkle development and/or slippage of reinforcement elements during fill placement and spreading.

262.05 Backfilling.

The final limits and configuration of the fills or reinforcing sections may vary, depending on the foundation materials encountered during excavation. Ensure that final foundation limits, character, and suitability are approved by the CO in writing before placing any backfill material.

Install the base of the reinforced embankment within + 4 inches of that specified. Backfill the stabilized volume with specified structural backfill or select granular backfill according to

Subsection 209.10. Ensure that no voids exist below the geogrids or reinforcing mesh. Compact each layer according to Subsection 209.11, method (b). Do not use sheepsfoot rollers for compaction.

Do not damage or disturb the reinforcing elements. Do not operate equipment directly on top of the geogrid or reinforcing mesh. A minimum of fill thickness of 6 inches is required prior to operation of tracked vehicles over the reinforcing elements. Correct all damaged, misaligned, or distorted reinforcing elements.

Backfill and compact behind the stabilized volume with structural backfill according to

Subsection 209.10 and 209.11, method (b). At the end of each day's operation, slope the last lift of backfill away from the embankment face to direct surface runoff away from the face. Do not allow surface runoff from adjacent areas to enter the embankment construction area.

262.06 Embankment Slope Treatment.

Treat the face of the reinforced slope for erosion control in according to Section 157.

262.07 Acceptance.

Reinforcing elements listed under Subsection 714.03 or 720.01 will be evaluated under

Subsections 106.02 and 106.03.

Construction of reinforced soil embankments and services will be evaluated under Subsections

106.02 and 106.04.

Select granular backfill and structural backfill will be evaluated under Subsections 106.02 and

106.04. See Table 262-1 for sampling and testing requirements.

Measurement

262.07.

Measure the items listed in the bid schedule according to Subsection 109.02 and the following.

Measure reinforcing elements by the square yard in place, exclusive of overlap and wastage.

Measure select granular backfill within the stabilized volume by the cubic yard in place.

262.08.

The accepted quantities, measured as provided in Subsection 109.02 and above, will be paid at the contract price per unit of measurement for the Section 262 pay item listed in the bid schedule.

Payment will be full compensation for the work prescribed in this Section. See Subsection

109.05.

Table 262-1. Sampling and Testing Requirements

Material or

Product

Type of

Acceptance

(Subsection)

Characteristic Test Methods

Specifications

Sampling

Frequency

Point of

Sampling

Split

Sample

Reporting

Time

Classification AASHTO M 145 One per soil type

Source of material

Yes Before using in work

Gradation AASHTO T 27

& AASHTO T

Moisture-

Density

AASHTO T 180

Method D (1) or

T99 Method C (1)

Backfill

(704)

Measured and tested for conformance

(106.04)

Compaction AASHTO T 310 or other approved procedures

Minimum two per

Lift

In-place -- Before placing next layer

(1) Minimum of 5 points per proctor.

303 – Road Reconditioning

303.10 Delete this Subsection and replace with the following:

Measure ditch and roadbed reconditioning combined by the foot horizontally along the centerline of the roadway for both sides of the roadway. Include all waste disposal.

320 - Stockpiled Aggregates

Description

320.01. This work consists of furnishing and placing aggregate in a stockpile at an existing site or constructing a new site and placing the aggregate at the new site.

320.02. Conform to the following Section:

Aggregate 703

Provide the gradation and quality requirements specified in the Section identified in the pay item.

320.03 Stockpile Site. Prepare existing sites as necessary to accommodate the quantity of aggregate to be stockpiled.

For new sites, clear and grub according to Section 201. Grade shape and compact the site to a uniform cross-section that drains. Place, compact, and maintain a minimum of 6 inches of crushed aggregate over the stockpile site and access roads. Prevent contamination of the stockpiles.

320.04 Stockpile. After producing a representative quantity of aggregate, submit initial gradation test results, including the size ratio calculations or proposed target values outlined in

Subsection 703.05, as applicable for approval by the C.O.

Request site approval before stockpiling aggregates. Make the stockpiles neat and regular in shape. Make the side slopes no flatter than 1:1.5.

Build the stockpiles in layers not exceeding 3 feet thick. Complete each layer before depositing aggregates in the next layer. Do not allow aggregates from the one layer to run down over lower layers of the stockpile. Do not drop aggregates from a bucket or spout in one location to form a cone-shaped pile.

Construct stockpile layers by spreading aggregates with trucks or other approved pneumatic-tired equipment. Do not push aggregates into piles.

When operating trucks on stockpiles, avoid tracking dirt or other deleterious material onto the stockpiled material.

Space stockpiles far enough apart or separate stockpiles by suitable walls or partitions to prevent the mixing of the different aggregate gradations.

320.05 Acceptance. Aggregate for stockpiling will be evaluated under Table 321-1 and

Subsection 106.04. The point of sampling will be the belt or stockpile.

Preparation of stockpile sites and construction of stockpiles will be evaluated under Subsections

106.02 and 106.04.

Clearing will be evaluated under Section 201.

320.06. Measure the 320 items listed in the bid schedule according to subsection 109.02.

320.07. The accepted quantities, measured as provided in subsection 109.02 and above, will be paid at the contract price per unit of measurement for the Section 320 pay items listed in the bid schedule.

Section 321- Major Aggregate Courses

321.01 This work consists of constructing one or more courses of aggregate on a prepared surface. Work includes producing aggregate by grid rolling, screening, or crushing methods, or placing pit-run or Government-furnished aggregate. Work may include additives, mineral filler, and/or binder.

Surface aggregate grading is designated as shown in Table 703-3.

Subbase and base aggregate grading is designated as shown in Table 703-2.

Screened aggregate grading is designated as shown in Table 703-16.

321.02 Conform to the following Subsections:

Aggregate 703.05

Water 725.01

Calcium Chloride flake 725.02

321.03 General. Prepare the surface on which the aggregate course is placed according to Section

204 or 303 as applicable.

Request approval of the roadbed in writing before placing aggregate.

Develop and use Government provided sources according to Section 105.

Develop, haul, and apply water in accordance with Section 170.

Submit a written quality control plan and perform the Contractor quality control and inspections according to Sections 153 and 154.

After a representative quantity of subbase, base, or surface aggregate is produced, submit proposed target values for the appropriate sieve sizes along with a representative 75-pound sample at least two days before incorporating the aggregate into the work. Submit target values within the gradation ranges shown in Table 703-2 or 703-3 for the required grading. After reviewing the

Contractor’s proposed target values the CO will determine the final values for the gradation and notify the Contractor in writing.

No quality requirements or no gradation other than maximum size will be required for pit run and grid-rolled material. For grid rolling, use all suitable material that can be reduced to maximum size.

After processing on the road, remove all oversize material from the road and dispose of it as directed by the CO.

Provide additives or binder, if required, at the proportions specified.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to

Section 320. Establish stockpile sites at approved locations.

321.04 Mixing and Spreading. Mix the aggregate and adjust the moisture content to obtain a uniform mixture with a moisture content suitable for the specified compaction method. Spread and shape the mixture on the prepared surface in a uniform layer with no segregation of size, and to a loose depth that will provide the required compacted thickness.

Do not place in layers exceeding 6 inches in compacted thickness for aggregate base and surface courses or twice the maximum particle size for screened aggregate. When more than one layer is necessary, compact each layer according to Subsection 321.05 before placing the next layer. Route hauling and leveling equipment uniformly over the full width.

When placing aggregate over geotextile, place aggregate in a single lift to the full depth specified.

When additives are specified ensure that aggregate, additives, and any required water, mineral filler, and binder are mixed by the specified method. Control additive proportions to 0.5 percent dry weight. Apply the chloride flakes at the rate of 5.4 pounds per square yard.

Additive Mixing Methods:

(a) Stationary Plant Method. Mix the aggregate with other required materials in an approved mixer. Add water during the mixing operation in the amount necessary to provide the moisture content for compacting to the specified density. After mixing, transport the aggregate to the jobsite while it contains the proper moisture content, and place it on the roadbed or base course using an aggregate spreader.

(b) Travel Plant Method. After placing the aggregate for each layer with an aggregate spreader or windrow-sizing device, uniformly mix it with other required materials using a traveling mixing plant or rotary mixer. During mixing, add water to provide the necessary moisture content for compacting to the specified density.

(c) Road Mix Method. After placing the aggregate for each layer, mix it with other required materials at the required moisture content for compacting to the specified density until a uniform distribution is obtained.

321.05 Compacting. Compact each layer full width. Roll from the sides to the center, parallel to the centerline of the road. Along curbs, headers, walls, and all places not accessible to the roller, compact the material with approved tampers or compactors.

Compact the aggregate using one of the following methods as specified:

Compaction A. Operating spreading and hauling equipment over the full width of the travelway.

Compaction B. Operate rollers and compact as specified in Subsection 204.11(a)(1).

Compaction C. Moisten or dry the aggregate to a uniform moisture content between 5 and 7 percent based on total dry weight of the mixture. Operate rollers and compact as specified in Subsection 204.11(a)(1).

Compaction D. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 99, method C or D.

Compaction E. Compact to a density of at least 96 percent of the maximum density, as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box

7669, Missoula, MT 59807).

Compaction F. Compact to a density of at least 95 percent of the maximum density, as determined by AASHTO T 180, method C or D.

Compaction G. Compact to a density of at least 100 percent of the maximum density as determined by the Modified Marshall Hammer Compaction Method (available upon request from USDA Forest Service, Regional Materials Engineering Center, P.O. Box

7669, Missoula, MT 59807).

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

321.06 Construction Tolerance. If grade finishing stakes are required, finish the surface to within ±0.05 feet from staked line and grade elevation.

If grade finishing stakes are not required, shape the surface to the required template and check the surface with a 10-foot straightedge. Defective areas are surface deviations in excess of 1/2 inch in

10 feet between any two contacts of the straightedge with the surface.

Correct all defective areas by loosening the material, adding or removing material, reshaping, and compacting.

Ensure that the compacted thickness is not consistently above or below the specified thickness.

The allowable average thickness of four random measurements for any ½ mile of road segment is within + ¼ inch of the specified thickness. The maximum variation from the compacted specified thickness is ½ inch.

Ensure that the compacted width is not consistently above the specified width. The allowable average width of any four random measurements along any ½ mile of road segment is within +4 inches of the specified width. The maximum variation from the specified width will not exceed

+12 inches at any point.

321.07 Maintenance. Maintain the aggregate course to the correct line, grade, and cross-section by blading, watering, rolling, or any combination thereof until placement of the next course.

Correct all defects according to Subsection 321.06.

321.08 Acceptance. See Table 321-1 or Table 321-2 as applicable, for sampling and testing requirements.

Aggregate gradation and surface course plasticity index will be evaluated under Subsection 106.04.

If the aggregate is obtained from a Government stockpile then the above characteristics will be evaluated under Subsection 106.02. Other aggregate quality properties will be evaluated under

Subsections 106.02 and 106.04. Placement of aggregate courses will be evaluated under

Subsections 106.02 and 106.04.

The allowable upper and lower aggregate gradation limits are the Target Value plus or minus the allowable deviations shown in Tables 703-2 and 703-3.

The allowable upper and lower Plasticity index limits for surface courses are stated in 703.05(b).

Preparation of the surface on which the aggregate course is placed will be evaluated under Section

204 or 303 as applicable.

321.09 Measure the Section 321 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Measure square yard width horizontally to include the top of aggregate width including designed widening. Measure the square yard length horizontally along the centerline of the roadway.

If the measurement for aggregate is by cubic yard using contract quantities then measure aggregate by the cubic yard in-place once compacted, otherwise measurement for aggregate by the cubic yard is measured by the cubic yard in the hauling vehicle.

Measure thickness perpendicular to the grade of the travelway.

Measure width perpendicular to the centerline.

321.10 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 321 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

R ep o rt in g

T im e

B ef o re u si n w o rk h o u rs h o

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Y es w h en re q u es te d

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Section 403. Hot Asphalt Concrete Pavement

403.03 Composition of Mix (Job-Mix Formula). Delete the first bulleted paragraph.

Delete Table 403-1 and substitute the following:

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-m ix rm h o te d b v er n m en t

S p li t m w u es

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S p ec if ic a ti o n s

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S H

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T

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T O

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D o r o th e r ap p ro v ed p ro ce d u re s

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409 - Asphalt Surface Treatment

409.02 Material. Add the following:

When designated, conform to applicable State department of transportation asphalt cement or emulsified asphalt requirements.

409.06 Weather. Delete the first paragraph and replace with the following:

Apply surface treatments with aggregate only when ambient air and surface temperatures are above 60 °F and rising in the shade, when the weather is not foggy or rainy, and when rain is not forecast for at least 24 hours after application.

409.06 Date & Time. Add the following:

Construct single-course surface treatments between May 1 and September 30.

409.08 Asphalt Application. Add the following to the 3rd paragraph:

Ensure the length of spread is no more than what can be covered with aggregate within 1 minute of the asphalt application.

409.10 Fog Seal. Add the following to the first paragraph:

Dilute by adding an equal amount of water to the emulsified asphalt. Do not cut the emulsified asphalt more than once.

409.11 Single Course Surface Treatments. Add the following:

Do not permit traffic to travel over any Asphalt Surface Treatment until completion of rolling.

Delete Table 409-1 and substitute the following:

Table 409-1 Approximate Quantities of Material-Single Course Surface Treatment

Table 409-1

Approximate Quantities of Material for

Single-Course Surface Treatment

D es ig n a ti

Nominal

Maximum

Size of

Aggregate

Gradation

Estimated

Quantity of

(2) pounds/yd

Emulsified

Asphalt (3) gallons/yd

Asphalt

Binder (3) gallons/yd

1A 3/4 inch B 40 – 49 0.40 – 0.55 0.27 – 0.38

1B 1/2 inch C 26 – 29 0.31 – 0.44 0.20 – 0.31

1C 3/8 inch D 24 – 28 0.44 – 0.48 0.13 – 0.24

1D No. 4 E 15 – 20 0.15 – 0.22 0.11 – 0.18

1E Sand F 9 – 15 0.11 – 0.18 0.09 – 0.15

(1) See Table 703-7 for aggregate gradations.

(2) Aggregate masses are for aggregates having a bulk specific gravity of 2.65, as determined by AASHTO T 84 and

T 85. Make proportionate corrections when the aggregate furnished has a bulk specific gravity above 2.75 or below

2.55.

(3) Adjust the asphalt content for the condition of the road. For Region One use only 3/8 inch aggregate unless approved by Regional office. (Gradation D under Designation 1C)

409.13 Acceptance. Delete the 2

nd paragraph and replace with the following:

Aggregate gradation for asphalt surface treatment will be evaluated under Subsection 106.04.

Table 409-4 Sampling and Testing Requirements.

Delete the last cell (4 th

) under Sampling Frequency and replace with the following:

1 per tanker truck and 1 per trailer

Delete the 2 nd and 3 rd cell under Type of…