Specs.docx

STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS

FP-03 : U.S. CUSTOMARY UNITS

SPECIFICATION LIST

PROJECT NAME Chequamegon Watershed Improvements 2010 DATE: 19 June 2009

Road Number

FR 579

Road Name

UNT to Silver creek

Termini

Sta. 11+00 to Sta14+00

Sub Unit

Medford

County

Taylor

THE FOLLOWING STANDARD SPECIFICATIONS SHALL APPLY TO THIS CONTRACT

Preface

Major Structures

Special Note: The above is a list of major specifications applicable to this contract. Other specifications referred to within these specifications, (even though not specifically listed) are also fully applicable to the solicitation and any resultant contract.

STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS

FP-03 : U.S. CUSTOMARY UNITS

SPECIFICATION LIST

PROJECT NAME Chequamegon Watershed Improvements 2010 DATE: 19 June 2009

Road Number

FR 1586

Road Name

Andrews Lane

Termini

Sta. 12+50 to Sta15+50

Sub Unit

Medford

County

Taylor

THE FOLLOWING STANDARD SPECIFICATIONS SHALL APPLY TO THIS CONTRACT

Preface

Major Structures

Special Note: The above is a list of major specifications applicable to this contract. Other specifications referred to within these specifications, (even though not specifically listed) are also fully applicable to the solicitation and any resultant contract.

SECTION 1 DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

The specification document indicated below is hereby made a part of this contract:

Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects, FP-03:US Customary Units

Applicable portions and Special Project Specifications are listed on the Specification List and include any standard specifications referenced therein.

STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS FP-03: US CUSTOMARY UNITS SPECIAL CONTRACT REQUIREMENTS Chequamegon Watershed Improvements 2010 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.

SPECIAL CONTRACT REQUIREMENTS

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

NBS

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration National Bureau of Standards National Electrical Safety Code West Coast Lumber Inspection Bureau

Delete subsections (b) SI symbols, (c) SI Prefix symbols, and (d) Slope notation and add the following:

(b) English Abbreviations.

AL. - Aluminum ASP. - Asphalt B.W. - Barbed Wire B.C.C.S.P. – Bituminous Coated Corrugated Steel Pipe CEMT. – Cement CEMT.T. – Cement Treated CTB – Cement Treated Base CLEAR & GRUB – Clearing & Grubbing CMPCT. – Compaction CONC. – Concrete CMP – Corrugated Metal Pipe C.S.P. – Corrugated Steel Pipe C.S.P. ARCH – Corrugated Steel Pipe Arch C.Y. – Cubic Yard C.Y.MI. – Cubic Yard Mile DIA. – Diameter EA. – Each EMLSFD. – Emulsified E&P CONTROL – Erosion and Pollution Control FABR. – Fabricated FOUND. – Foundation FURN. – Furnished GAL. – Gallon GR. – Grade HT. – Height H. STRENGTH – High Strength HOR. – Horizontal HR. – Hour L.F. – Linear Foot LD. – Loading L.S. – Lump Sum MAT’L – Material MAX. – Maximum M. – Method MI. – Mile MIN. – Minute MFBM – One Thousand Feet Board Measure M. GALS. – One Thousand Gallons M.GALS.MI. – One Thousand Gallons Mile M.S.F. – One Thousand Square Feet PVC – Polyvinylchloride LBS. – Pounds REFLECT. – Reflectorized SEC. – Section S.F. – Square Foot S.Y. – Square Yard STA. – Station STA. YD. – Station Yard STRUCT. - Structural S. STEEL – Structural Steel STMP – Stump TV – Target Value TH. – Thickness T.M. – Ton Mile T&L – Tops and Limbs UOT – Utilization of Timber VERT. – Vertical WH. – White W. – Width W/ - With W/O – Without W.W. – Woven Wire YE. - Yellow

(c) Slope notation (horizontal : vertical).

Express the slope as the ratio of a number of units of horizontal to one unit vertical.

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. As used in specifications and drawings for specified roads (Timber Sale Contracts), “Contractor” is “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.

101.04 Definitions.

Add the following:

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.

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.

Delete and replace the following definitions:

Roadway--The portion of the road within the limits of excavation and embankment, including slope rounding.

Roadside--A general term denoting the area adjoining the outer edge of the roadway to the R/W.

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

Figure 101-1—Illustration of road structure terms.

Section 102. Bid, Award and Execution of Contract

Delete Section 102 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

Section 103. Scope of Work

Delete all but subsection 103.01 Intent of Contract.

SPECIAL CONTRACT REQUIREMENTS

Section 104. Control of Work

Delete sections 104.01, 104.02, and 104.04.

104.03 Specifications and Drawings.

Add the following:

(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.

104.05 Load Restrictions.

Add the following:

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 (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 section 625.

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 Relation and Responsibility to the Public

107.02 Protection and Restoration of Property and Landscape.

Add the following:

If work will occur in 2010 then: Do not work during the following holidays: Memorial Day Weekend, Thursday May 27 through Tuesday June 1; The Fourth of July Weekend, Thursday July 1 through Tuesday July 6; and Labor Day Weekend, Thursday September 2 through Tuesday September 7.

All seeding shall be completed between June 1 and September 15.

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.08 Sanitation, Health, and Safety.

Add the following:

Perform all operations in a prudent, conscientious, safe and professional manner. Ensure that all personnel involved in handling and packaging the hazardous waste be trained for the level of expertise required for the proper performance of the task and, in particular, in the areas of chemical incompatibility, general first aid procedures and spills. Provide handling and personnel protective equipment appropriate to ensure safe handling of the hazardous waste (at a minimum, in accordance with 29 CFR 1910.120). Provide notification to the Forest Service of all hazardous material that may be brought onto the National Forest as part of accomplishing the tasks under this contract.

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

107.10 Environmental Protection.

Add the following:

Do not locate equipment repair shops, stationary refueling sites, or other facilities where hazardous material may be spilled on Government land.

Before beginning any work, submit a Hazardous Spill Plan. In the plan, list actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, etc. Immediately notify the CO of all hazardous spills. Provide a written report in narrative form no later than 24 hours after the initial report and include the following:

· Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

· Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

· Exact time and location of spill including a description of the area involved.

· Containment procedures.

· Summary of any communications contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

· Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue. Include copies of all spill related clean-up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for any and all spills or leaks and subsequent clean ups required during the performance of this contract which occur as a result of or are contributed to by the actions of its agents, employees, or subcontractors. Clean up such spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations. Perform the clean up at no cost to the Government.

107.11 Protection of Forests, Parks, and Public Lands.

Add the following:

Immediately extinguish without expense to the Government all fires on or in the vicinity of the project which are caused by the Contractor’s employee’s, whether set directly or indirectly as a result of construction operations, with or without direction by the Forest Service. The Contractor may be held liable for all damages and costs of additional labor, subsistence, equipment, supplies, and transportation deemed necessary by the Government resulting from fires set or caused by Contractor’s employees or resulting construction operations.

Contractor’s Responsibility for Controlling Other Emergencies - When requested by the Contracting Officer, allow the Forest Service to temporarily use employees and equipment for emergency control work. Payment will be made at not less than the current area rate established by the Forest Service.

Do not burn camp refuse, brush, slash, or debris such as that resulting from clearing around camps or on rights-of-way, without the written approval of the Contracting Officer. Submit written requests for burning to the Contracting Officer at least 48 hours in advance of intended burning. The Contracting Officer will approve routine camp refuse disposal incineration in the camp development proposal.

SPECIAL CONTRACT REQUIREMENTS

Section 108. Prosecution and Progress

Delete Section 108 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

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.

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.

109.03 Weighing Procedures and Devices.

c) Project weighing system. Add the following::

For aggregates weighed for payment, adjust scale weights of material to deduct the daily average moisture content in excess of 2 percentage points over optimum moisture as determined by AASHTO T 99 or the designated compaction method. If moisture determination is necessary, determine the daily average moisture content in accordance with AASHTO T 255, from not less than three representative samples of aggregate taken at random intervals each day that aggregate is being weighed.

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Section 151. Mobilization

Delete Section 151 in its entirety and replace with the following:

151.01 Description

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; obtaining of permits, insurance, and bonds. This work also includes washing and treating construction equipment and vehicles necessary for equipment transport to remove seeds, plants, and plant fragments before the equipment is used on Forest Service lands, according to the requirements within.

Construction Requirements Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment. Only equipment inspected by the Forest Service will be allowed to operate within the project area. All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in. This requirement does not apply to cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas off the National Forest.

Equipment will be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Notify the CO in writing at least 72 hours before moving any construction equipment onto the national forest. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

Use methods of cleaning and locations for cleaning approved by the CO.

For work at a commercial washing facility, use an approved facility.

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, in the Project Area or on the haul route, will be promptly reported to the other party. Contractor and Forest Service will agree on treatment methods to reduce or stop the spread of noxious weeds when new infestations are found. A current list of noxious weeds of concern to Forest Service is available at each Forest Service office.

151.02 Measurement.

Clean equipment prior to moving onto this project. The initial cleaning will not be included in the measurement for payment. Payment for cleaning will only be made if subsequent cleanings are ordered by the CO. Measurement shall be on an “each” basis, meaning one complete cleaning of all equipment required for this contract. Subsequent cleanings necessitated by the Contractor’s actions but not directed by the CO will not be included in the measurement for payment.

Measure mobilization according to Subsection 109.02.

151.03 Payment.

The accepted quantity, measured as provided in Subsection 109.02, will be paid at the contract price per unit of measurement for the Section 151 pay item shown in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Progress payments for mobilization lump sum will be paid as follows:

(a) If applicable, bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

(b) When 5 percent of the original contract amount is earned from other bid items, 50 percent of the mobilization item, or 5 percent of the original contract amount, whichever is less, will be paid.

(c) When 10 percent of the original contract amount is earned from other bid items, 100 percent of the mobilization item, or 10 percent of the original contract amount, whichever is less, will be paid.

(d) Any portion of the mobilization item in excess of 10 percent of the original contract amount will be paid after final acceptance.

Include all costs associated with the initial cleaning of equipment in the unit bid price for Mobilization. Cleaning for subsequent move-ins will not be paid for unless after a suspension ordered by the CO.

Section 153. Contractor Quality Control

153.02 Contractor Quality Control Plan.

Add the following:

Submit proposals in writing for using alternate AASHTO or State approved test methods for approval. Alternate methods may be allowed based on documented equivalence to the method specified.

153.04 Records.

Delete all but the first paragraph.

Section 155. Schedules for Construction Contracts

Delete Section 155 in its entirety.

SPECIAL CONTRACT REQUIREMENTS

Section 156. Public Traffic

156.03 Accommodating Traffic During Work.

Delete the first paragraph and replace with the following:

Accommodate traffic according to the requirements set forth below, MUTCD, and Section 635. Submit a traffic control plan for acceptance at least 10 days before intended use.

The contractor will be allowed a maximum period of 48 hours closure to through traffic on FR 579. FR 579 is a dead end road with people living between the dead end and the culvert installation crossing. Efforts shall be made to provide at a minimum, foot travel across the area of work at all times. There will be a maximum period of 24 hours closure on FR 1586. All construction must be sufficiently progressed to allow for safe passage of the general public across the new structures by September 15, 2010

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 section in its entirety.

Section 157. Soil Erosion Control

157.01 Description.

Including construction of temporary diversion channels.

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.

FR 579 is a dead end road with people living between the dead end and the culvert installation crossing. Efforts shall be made to provide at a minimum, foot travel across the area of work at all times.

157.09 Diversions.

Delete the 1st sentence and add the following:

Construct temporary channels, temporary culverts, or sandbags to divert water around disturbed areas, slopes, and work areas. Earthen dams are prohibited.

157.13 Maintenance and Cleanup

Delete the third paragraph.

157.16 Payment

Delete all but the first paragraph.

Section 201. Clearing and Grubbing

201.02 Delete: Tree wound dressing material reference.

201.03 General.

Delete the last sentence.

201.04 Clearing.

Delete the last sentence of (d).

201.04 Clearing. (c)

Replace with the following:

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to within 12 inches or one-third of the stump diameter of the ground, whichever is higher, measured on the side adjacent to the highest ground.

NOTE: This work, including any disposal, is incidental to Pay Item 203

SPECIAL CONTRACT REQUIREMENTS

Section 203. Removal of Structures and Obstructions

203.01.

Delete and replace with the following:

This work consists of disposing of clearing slash, salvaging, removing, and legally disposing of fences, pavements, culverts, utilities, and other unneeded obstructions.

203.02.

Add the following:

Geotextile 714

203.03 Salvaging Material

Add the following:

There is no material to be salvaged in this contract

203.05 Disposing of Material.

(a) Remove from project.

Delete the last two sentences

203.05 Disposing of Material.

(f) Scattering. Scatter construction slash outside the clearing limits without damaging trees. Limb all logs. Place logs and stumps away from trees, positioned so they will not roll, and are not on top of one another. Limb and scatter other construction slash to reduce slash concentrations.

Section 204. Excavation and Embankment

204.05 Conserved Topsoil.

Delete the subsection

204.06 Roadway Excavation.

Add the following:

Road pioneering, slash disposal, and grubbing of stumps may proceed concurrently with excavation. Conduct excavation and placement operations so material to be treated under Section 201 will not be incorporated in the roadway unless specifically included in the slash treatment method.

Remove snow and ice in advance of the work and deposit beyond the roadway limits in a manner that will not waste material or generate sediment. Do not incorporate snow and ice into the embankment. Do not place snow or ice in a manner to cause damage.

204.06 Roadway Excavation

Add the following:

(b) Rock Cuts.

When blasting rock, use blasting methods according to Subsection 205.08

204.09 Preparing Foundation for Embankment Construction.

Delete subsection (a) and replace it with the following:

(a) Embankment less than 3 feet high over natural ground. When designated, remove topsoil and break up the ground surface to a minimum depth of 6 inches by plowing or scarifying. Compact the ground surface according to Subsection 204.11.

204.10 Embankment Construction.

(a) General.

Delete the third paragraph and add the following:

Compact embankment side slopes flatter than 2:1 with a tamping type roller or by walking with a dozer. For slopes 2:1 or steeper, compact the slopes as construction of the embankment progresses.

204.11 Compaction.

Delete the first paragraph and replace it with the following:

For compaction under method (a), (b), or (c), use AASHTO T 27 to determine the amount of material retained on a Number. 4 sieve. For compaction methods (d) or (e) no sieve test is required and compact as the method requires.

Add the following compaction methods:

(d) Layer Placement Method (Hauling and Spreading Equipment). Material may be initially placed by end dumping to the minimum depth needed for operation of spreading equipment. Level and smooth each embankment layer before placement of subsequent layers. Operate hauling and spreading equipment uniformly over the full width of each layer. Construct a solid embankment with adequate compaction by working smaller rock and fines in with the larger rocks to fill the voids, and by operating hauling and spreading equipment uniformly over the full width of each layer as the embankment is constructed.

(e) Layer Placement (Roller Compaction) Method. Place embankments as specified in the layer placement method. Ensure that material is at moisture content suitable to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, in the case of the sheepsfoot roller, the roller “walks out” of the layer. Make at least three complete passes.

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

(d) Finishing. Finish the road surface to be smooth, uniform, and shaped to conform to the typical sections. Remove unsuitable material from the roadbed and replace it with suitable material. Finish roadbeds to the tolerance class shown in table 204-2.

Ensure that the subgrade for both surfaced and unsurfaced roads is visibly moist during shaping and dressing. Bring low sections, holes, cracks, or depressions to grade with suitable material. Maintain proper ditch drainage.

Finish the roadbed for unsurfaced roads using one of the following methods:

(1) Method A. Ensure that the top 6 inches below the finished roadbed contains rocks no larger than 6 inches. Remove oversize material from the roadbed and replace it with suitable material

(2) Method B. Roll the roadbed to break down rocky material. Roll a minimum of five full-width passes, or until visual displacement ceases, with a vibratory grid roller or equivalent with a minimum mass of 10 tons.

(3) Method C. Tractor finish work by spreading the excavation for roads designated as Construction Tolerance Class K, L, or M. Eliminate rock berms that may form during embankment construction with a tractor finish.

204.14 Disposal of Unsuitable or Excess Material.

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

Unsuitable material may be used on slopes where it will to be subject to erosion into wetlands, rivers, or streams. Any unsuitable material not used on slopes or onsite shall be disposed of at designated sites or legally off of the project.

Table 204-1 Sampling and Testing Requirements.

Add the following note to the table:

When compaction methods (d) or (e) are used AASHTO M 145, T 99, T 180, and T 310 are not required for earth embankment test methods.

Add Table 204-2—Construction Tolerances:

Table 204- 2- Construction tolerances.

Tolerance Class(a)

Subgrade elevation (ft)

a. Maximum allowable deviation from construction stakes and drawings.

b. Maximum allowable deviation from staked slope measured from slope stakes or hinge points.

c. Unless otherwise shown the centerline alignment and subgrade elevation, as built, have no horizontal curves with a radius of less than 80 feet, and no vertical curves with a curve length of less than 80 feet when the algebraic difference in the grade change is less than 10 percent, or a curve length of less than 100 feet when the algebraic difference of the grade change is greater than or equal to 10 percent. The centerline grade is not to exceed 20 percent in 100 feet of length.

204.15 Acceptance

Table 204-1 Sampling and Testing Requirements.

Add the following note to the table:

(2) When compaction methods (d) or (e) are used AASHTO M 145, T 99, T 180, and T 310 are not required for earth embankment test methods.

Section 206. Earthwork Geogrid

206.01 Description. This work consists of constructing reinforced soil embankments.

206.02 Material. Conform to the following Subsections:

Structural Backfill 704.04 Select Granular Backfill 704.10 Reinforcing Mesh 720.01(h)

Construction Requirements

206.03 General. All work shall be performed in accordance with manufacturers’ specifications. Before beginning work, submit a work plan for acceptance. Allow at least three days for acceptance. Include procedures for placing the geogrid. All seams will overlap by at least18” and any defective areas will be overlapped by 36” and approved by the CO. The CO may require zip ties for all seams.

206.04 Reinforcing Elements. Place TS160 or equivalent at the specified elevation (Cross Section drawings/Typical Section) and parallel to the centerline alignment including under the culvert. Orient the reinforcing elements so that the maximum tensile strength available is in the direction of specified primary reinforcement. Prevent wrinkle development or slippage of reinforcement elements during fill placement and spreading.

206.05 Backfilling. The CO will approve the grid placement, prior to backfill operations. Backfill the stabilized volume with specified structural backfill or select granular backfill or material approved by the CO, according to subsection 209.10. Ensure that no voids exist below the geogrids or reinforcing mesh. Compact each layer according to 209.11, method(b). Do not use sheepsfoot rollers for compaction.

Do not damage or disturb the reinforcing elements. Do not operate equipment on the embankment with less than 6 inches of fill on top of the geogrid or reinforcing mesh.

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 days 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.

206.06 Embankment slope Treatment. Treat the face of the reinforced slope for erosion in accordance to section 157.

206.06 Acceptance. Reinforcing elements will be evaluated under Subsection 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

206.07 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.

Payment

206.09 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 206 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Section 208. Structure Excavation and Backfill for Selected Major Structures

208.04 General.

Add the following to the end of the second sentence of the third paragraph:

"... to the CO a minimum of 5 days prior to beginning excavation work."

Add the following to the end of the third sentence of the third paragraph:

"...to the CO a minimum of 15 days prior to installation."

208.06 Cofferdams.

Add the following:

Maintaining 25% of the stream flow shall be required when constructing cofferdams. This may be done by use of pumping, creating a diversion channel, or other Method Approved by the CO. The work involved with maintaining the stream flow shall be considered incidental to Pay Item 60202 and 60205 Culverts.

Delete subsections (a), (f), and (g) and add the following:

(a) Cofferdams shall be constructed by sand bagging, sheeting, or other Method Approved by the CO.

208.09 Foundation Preparation.

Add the following after the first paragraph:

The foundation elevation is defined as the bottom of footings, for spread footing placement; the bottom of the pile cap, for construction of pile foundations; and the toe of the wall, for construction of retaining walls, except wingwalls at bridges.

Replace all material from any over-excavation below the designated footing elevation with compacted gravel at the direction of the CO.

When boulders or irregular, fractured, or seamed bedrock precludes excavation to the designated footing elevation without further loosening of previously solid material, the CO may order removal of such loose material and allow payment for gravel, that is required to restore foundation material to the designated elevation

208.13 Measurement.

Change the following:

(a) “18 inches” to “48 inches”

Add the following to the second paragraph:

(f) Material excavated to construct end walls or wing walls which lie outside the excavation limits specified above.

Add the following paragraph:

Foundation over-excavation and the resulting replacement material will not be measured for payment unless the CO determines the over-excavation was unavoidable because of the nature of the material.

Section 209. Structure Excavation and Backfill

209.07 Dewatering.

Delete entire subsection and add the following:

All discharge from dewatering must be filtered by a method approved by the CO to remove sediment from entering any waterway.

209.10 Backfill.

(a) General.

Add the following:

Replace any pipe that is distorted by more than 5 percent of nominal dimensions, or that is ruptured or broken.

Do not place or backfill pipe that meets any of the following conditions until the excavation and foundation have been approved in writing by the CO:

· Embankment height greater than 6 feet at subgrade centerline.

· Installation in a protected streamcourse.

· Round pipe with a diameter of 48 inches or greater.

· Pipe arches with a span of 50 inches or greater.

· Any box culvert of structure other than pipe culverts.

(b) Pipe culverts.

(1) Pipe culverts with compacted backfill.

Add the following:

On each side of the culvert, place an area of compacted material at least 4’ from edge of new culvert. Compact the backfill without damaging or displacing the culvert. Complete the backfilling of the trench with suitable material.

209.11 Compacting.

Delete the subsection and add the following:

Compact backfill using designated compaction method A, B, or C:

Method A. Ensure that backfill density exceeds the density of the surrounding embankment.

Method B. Determine optimum moisture content and maximum density according to AASHTO T 99 method C. Adjust the moisture content of the backfill material to a moisture content suitable for compaction. Compact material placed in all layers to at least 95 percent of the maximum density. Determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

Method C. Ensure moisture content suitable for obtaining compaction. Compact each layer using compaction equipment designed for this purpose until visual displacement ceases. For compaction under sections 252, 254, 255, 257, 258 and 262 compact with a vibratory steel wheeled roller with a mass of at least 2 3/4 tons.

Table 209-1 Sampling and Testing Requirements

Compaction methods (A) and (C) do not require AASHTO T-99 or T-310 test methods for foundation fill.

251 - Riprap

251.03 General.

Add the following:

Place riprap under or adjacent to structures before placing prefabricated superstructure units or constructing superstructure falsework unless otherwise approved by the CO.

251.08 Measurement.

Payment for excavation and embankment required for placement of riprap is indirectly included in the pay item for riprap.

Section 301. Untreated Aggregate Courses

Title. Change the title to: Section 301 Aggregate Courses 301.01.

Add the following:

Work includes producing aggregate by pit-run, grid-rolling, screening, or crushing methods, or placing Government-furnished aggregate, as specified. Work may include additive mineral filler, or binder.

301.02.

Add the following:

301.03 General.

Do not place aggregate until the surface on which it will be placed has been approved in writing by the CO.

For pit run or grid-rolled material, furnish material smaller than the maximum size. No gradation other than maximum size will be required for pit-run or 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.

Develop and use Government furnished sources according to Section 105.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to Section 307. Establish stockpile sites at locations approved. Clear and grub stockpile sites, if required according to Section 201.

301.04 Mixing and Spreading.

Delete the first sentence of the first paragraph and add the following:

Ensure that aggregate and any required additives, water, mineral filler, and binder are mixed by the specified method except, if crushed aggregate products are being produced and mineral filler, binder, or additives are required, uniformly blend during crushing. Control additive proportions to 0.5 percent dry weight.

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.

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. During mixing, add water to provide the necessary moisture content for compacting.

Road Mix Method. After placing the aggregate for each layer, mix it with other required materials at the required moisture content until the mixture is uniform throughout. Mix aggregate, water, and all other materials until a uniform distribution is obtained.

Spread the aggregate in a uniform layer, with no segregation of size, and to a loose depth that will provide the required compacted thickness.

During placement of aggregate over geotextile, place aggregate in a single lift to the full depth specified.

During all stages of construction, route and distribute hauling and leveling equipment over the width and length of each layer of material.

301.05 Compacting.

Delete the first and third paragraphs and add the following:

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

(a) Compaction A. Compact the aggregate by operating spreading and hauling equipment.

(b) Compaction B. 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).

(c) Compaction C. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 99, method C or D.

(1) Compaction C-1. Compact each layer of aggregate 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).

(d) Compaction D. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 180, method C or D.

(1) Compaction D-1. Compact each layer of aggregate 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).

(e) Compaction E. Operate rollers and compact as specified in Subsection 204.11(a).

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.

301.06 Surface Tolerance.

Add the following:

Thickness and Width requirements:

The maximum variation from the compacted specified thickness is ½ inch. The compacted thickness is not consistently above or below the specified thickness and the average thickness of 4 random measurements for any ½ mile of road segment is within + ¼ inch of the specified thickness.

The maximum variation from the…