Attachment 4 - Bismark Lake Boardwalk Repair Phase 2 Specifications.pdf

101.01_nat_04_02_2004

101 - Terms, Format, and Definitions

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-14 to Transportation Acquisition Regulations (TAR). For Timber Sales, delete all references in FP-14 to Federal Acquisition Regulations (FAR).

101.03_nat_04_02_2004

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NEC

WCLIB

WWPA

ALSC

WWPI

NLGA

NSLB

NLMA

RIS

SPIB

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

Western Wood Products Association

American Lumber Standards Committee

Western Wood Preservers Institute

National Lumber Grades Authority

Northern Softwood Lumber Bureau

Northeastern Lumber Manufacturer’s Association

Redwood Inspection Service

Southern Pine Inspection Bureau

101.04_nat_04_29_2004

101.03 Abbreviations.

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.

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.

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, methods of measurement, unit price, and amount.

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

Figure 101-1—Illustration of road structure terms.

R ig ht o f -

W a y R oa d si d e R oa d si d e

C le a rin g W id th

R o ad w ay C le a rin g

L im it X

Y

G ro un 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 as e C o ur se

F ill

S lo p e

B a ck S lo p e

D ra in a g e

D itc h

G ro u n d L in e

S u bg ra de

R o ad B e d

S h a p e s an d di m e n si o n s w ill v a ry to fi t lo ca l c on di tio n s.

S e e d ra w in g s fo r ty p ic a l s ec tio ns

X a n d

Y d e n ot e cl e a rin g o u ts id e o f ro ad w ay

N ot e

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

102 - Bid, Award, and Execution of Contract

102.00_nat_03_27_2004

102 Delete

Delete Section 102 in its entirety.

103 - Scope of Work

103.00_nat_04_02_2004

103 Delete

Delete all but subsection 103.01 Intent of Contract.

104 - Control of Work

104.01_nat_03_27_2004

104 Control of Work.

Delete sections 104.01 and 104.02.

104.03_nat_03_23_2004

104.03 Specifications and Drawings.

104.03(c) As-built Drawings.

Replace with the following:

(c) As-Built-Plans. Furnish one set of as built plans. 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 on the as-built plans.

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, continually update them to reflect the as-built details. Upon request, make the plans available to the CO to review for compliance with these specifications.

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 Locations 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 days.

104.04 Coordination of Contract Documents.

Replace with the following:

The special contract requirements, standard specifications, and plans are contract documents. A requirement in one document is binding as though occurring in all contract documents. The contract documents are intended to be complementary and to describe and provide for a complete contract. In case of discrepancy, calculated and shown dimensions govern over scaled dimensions. The contract documents govern in the following order:

(a) Special contract requirements;

(b) Standard specifications; and,

(c) Plans.

104.05_nat_03_23_2004

104.06 Use of Roads by Contractor.

Add section 104.06

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.

104.07 Other Contracts.

Add section 104.07

The contractor shall schedule activities to coordinate and cooperate with other contracts, when applicable.

105 - Control of Material

105.02_nat_03_26_2004

105.02 Material Sources.

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.

105.02(c) Contractor-located sources.

Add the following:

All certifiable material (e.g., soil, gravel, seed, mulch etc.) transported onto National Forest System land or incorporated into the work will be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area.

All seed and mulch materials must be certified weed free.

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.

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 restrictive.

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. Three methods of determining conformity and accepting work are described in Subsections 106.02 to

106.04 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.

106.05 Statistical Evaluation of Work and Determination of Pay Factor (Value of Work).

Replace the entire section with the following:

Statistical evaluation of the work will not be required. All specifications referring to this Subsection shall instead be referred to Subsections 106.02 through 106.04 as appropriate for the work performed.

106.07_nat_04_02_2004

106.07 Partial and Final Acceptance

Delete subsection 106.07.

107 - Legal Relations and Responsibility To the Public

107.02 Protection and Restoration of Property and Landscape.

Work in the Middle Saint Vrain Creek is not restricted except for high water periods.

107.05 Responsibility for Damage Claims.

Delete subsection 107.05.

107.06 Contractor’s Responsibility for Work.

Delete the following:

“except as provided in Subsection 106.07”.

107.08_nat_03_24_2004

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 are 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 personal protective equipment appropriate to ensure safe handling of the hazardous waste according to 29 CFR 1910.120). Notify the Forest Service of all hazardous material that may be brought onto the National Forest.

107.09 Legal Relationship of the Parties.

Delete subsection 107.09.

107.10_nat_03_24_2004

107.10 Environmental Protection.

Add the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill 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, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report 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.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - Prosecution and Progress

108.00_nat_03_24_2004

Delete Section 108 in its entirety.

109 - Measurement and Payment

109.01 Measurement of Work

Replace the sixth paragraph with the following:

Submit measurement notes to the CO as directed. For lump sum items, submit documentation to support invoiced progress payment.

109.02_nat_03_25_2004

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.

(c) Cubic Yard

Delete methods (2) and (4).

Measurement Terms and Definitions.

Replace 109.02(p) with 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.

109.05 Scope of Payment.

Replace the last paragraph with the following:

The quantities shown in the bid schedule are contract quantities unless designated otherwise.

Limit pay quantities to those shown on the bid schedule or otherwise authorized before performing the work. Payment will be made for contract quantities unless designated otherwise on the bid schedule. For designated quantities to be measured for payment and for quantities to be adjusted according to Section 109.02(b), measure quantities as directed in each associated Standard Section or Special Contract Requirement.

109.06_nat_03_24_2004

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

152 - Contractor Survey and Staking

152.00_nat_04_29_2004

Description

152.01(c) Material.

Use required stake dimensions and materials. Pre-paint the top 2 inches of all stakes and lath, or mark them with plastic flagging. Use designated colors for paint or flagging. Mark all stakes with a stake pencil that leaves a legible imprint, or with waterproof ink.

Do not use aerosol spray paints.

Use moisture-resistant paper for survey notes. Keep notes in books with covers that will protect the contents and retain the pages in numerical sequence.

Construction Requirements

152.04 General.

Delete second sentence in seventh paragraph and replace with the following:

Reestablish missing reference, control lines, or stakes as necessary to control subsequent construction staking operations

152.03 Survey and Staking Requirements.

(b) Centerline reestablishment.

Replace with the following:

Reestablish centerline from instrument control points. The maximum spacing between centerline points is 25 feet when the centerline curve radius is less than or equal to 200 feet. When the centerline curve radius is greater than 200 feet, the maximum distance between centerline points is 100 feet.

(d) Slope Stakes & References:

Replace section with the following:

Slope stakes and references. When required, locate slope stakes on designated portions of the road. Locate the slope stake catch points and use them to establish clearing limits and slope stake references.

Mark slope stakes with the station, the amount of cut or fill, the horizontal distance to centerline, and the slope ratios.

Place slope reference stakes at least 10 feet outside the clearing limit and mark with the offset distance to the slope stake. Place sight stakes when required.

Prior to clearing and grubbing operations, move the slope stake outside the clearing limit to the slope reference stake. After clearing and grubbing and before excavation, reset the slope stakes in their original position.

Use the designated method to establish the slope stake catchpoint.

Method I—Computed Method. Use the template information shown in the plans or other Government-provided data to calculate the actual location of the catchpoint. The slope stake “catchpoint distance” provided may be used as a trial location to initiate slope staking. Recatch slope stakes on any section that does not match the staking report within the tolerances established in Table 152-2.

Method II—Catchpoint Measurement Method. Determine the location of slope stake catchpoints by measuring the catchpoint distances shown in the plans or other Government-provided data.

(e) Clearing and grubbing limits.

Establish clearing limits on each side of the location line (road centerline) by measuring the required horizontal or slope distances shown on the plans. Mark the clearing limits with flagging or tags on trees to be left standing, or on lath. Make markings intervisible, and no more than 90 feet apart.

After establishing clearing limits, move the location line (road centerline) stake outside the clearing limits for station identification purposes, and mark it with horizontal distance to location line (road centerline)

(f)(2) Grade finishing stakes.

Replace the 3rd paragraph with the following:

The maximum longitudinal spacing between centerline points is 25 feet when the centerline curve radius is less than or equal to 200 feet. When the centerline curve radius is greater than 200 feet, the maximum distance between centerline points is 100 feet. The maximum transverse spacing between stakes is 12 feet. Use brushes or guard stakes at each stake.

(g) Culverts.

Delete this section

(h) Bridges.

Replace the subsection with the following:

Set adequate horizontal and vertical control, reference lines, and reference points for the new bridge superstructure, abutment bearing seats, wing walls, and other major components. Establish the bridge control, reference lines, and reference points by setting hubs and guard stakes beyond the clearing limits on each side of the channel. Record the following reference stakes:

(1) Station or coordinates of actual point where the abutment centerline bearing intersects the road centerline and the skew angle;

(2) Reference point, lines, and elevations for new slab superstructure shown on the plans;

(3) Reference points and lines for all top of embankment stations and offsets;

(4) Reference points, reference lines, and applicable offset distances for approach rail post locations.

Perform this work after clearing is completed and within the tolerances established in Table 152-1 under Precision Class A (Bridges). The structural component’s control is established as a local network and the tolerances are relative to that network.

(l) Miscellaneous Survey and Staking.

(11) Cattleguards

(12) Drain Dips

(13) Erosion Control Measures

(m) Roadway cross-sections.

Take roadway cross-sections normal to centerline. When the centerline curve radius is less than or equal to 200 feet, take cross-sections at a maximum centerline spacing of 25 feet. When the centerline curve radius is greater than 200 feet take cross-sections at a maximum centerline spacing of 100 feet. Take additional cross-sections at significant breaks in topography and at changes in the typical section. Along each cross-section, measure and record points at breaks in topography, but no further apart than 20 feet. Measure and record points to at least the anticipated slope stake and reference locations. Reduce all cross-section distances to horizontal distances from centerline.

Replace Table 152-1 with the following two tables:

Table 152-1 Tolerances for reestablishing P-line, traverse, and elevations.

Precision Class

Minimum Position Closure Angular Accuracy (±)

L-Line Tangent Control Pointsa

Vertical Closureb

A (Bridges)

1/10,000 2 sets, direct/reverse 10 second rejection limit

N/A

0.02 ft or 0.02ft/1000ftc

B 1/5,000 2 sets, direct/reverse 20 second rejection limit

0.1 ft

0.02 ft or 0.02ft/1000ftc

C 1/1,000 1 set, direct/reverse 1 minute rejection limit

0.2 ft 0.5ft/1000ftc

D 1/300 Foresight and backsight;

15 minute rejection limitc

0.4 ft 1.0ft/1000ftc

E 1/100 Foresight and backsight;

30 minute rejection limitc

0.8 ft 1.0ft/1000ftc

a. Accuracy of offset measurement.

b. Determine vertical closures at intervals not to exceed 2000 ft as measured along centerline.

c. Use greater value.

Table 152-2 Cross section and slope stake tolerances.

Item Tolerances

A B C D E

Allowable deviation of cross-section line projection from a true perpendicular to tangents, a true bisector of angle points, or a true radius of curves

(±)2o (±)3o (±)3o (±)5o (±)5o

Take cross-sections topography measurements so that variations in ground from a straight line connecting the cross-section points will not exceed

0.5 ft 1.0 ft 2.0 ft 2.0 ft 3.0 ft

Horizontal and vertical accuracy for cross-sections, in feet or percentage of horizontal distance measured from traverse line, whichever is greater.

0.1 ft or 0.4%

0.15 ft or 0.6%

0.2 ft or 1.0%

0.2 ft or 1.0%

0.3 ft or 1.0%

Horizontal and vertical accuracy for slope stake, slope stake references, and clearing limits. In feet or percentage of horizontal distance measured from centerline or reference stake, whichever is greater:

Slope reference stakes and slope stakes.

Clearing limits

0.1 ft or 0.4%

1.0 ft

0.15 ft or 0.6%

1.0 ft

0.2 ft or 1.0%

1.0 ft

0.2 ft or 1.0%

1.5 ft

0.3 ft or 1.0%

2.5 ft

152.06 Payment

All surveying required to construct the approach rails shall not be measured separately, but shall be included in the following item:

15205 Grade finishing stakes, surface aggregate, tolerance A Lump Sum

153 - Contractor Quality Control

153.02_nat_03_24_2004

153.03 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.

153.03 (c) Records.

Delete section.

153.05 Sampling and Testing

Add the following:

The contractor shall submit to the CO current documentation of the calibration and inspection of the testing equipment to be used for the project. The documentation shall include inspection date, inspector, calibration number, and the method of calibration. All testing equipment shall be calibrated and inspected tagged with the inspection date, inspector, and calibration number. The lab testing equipment and density testing equipment shall be calibrated and inspected on a yearly basis. The concrete testing equipment shall be calibrated and inspected every four months.

Material testing shall be performed at the frequency required in the subsection titled Acceptance within each applicable standard specification section.

The Contractor shall provide testing of the structural backfill material to determine optimum moisture content and maximum density according to the method required within each applicable standard specification section.

The Contractor shall provide testing of the structural backfill and surface aggregate materials to determine plasticity index, gradation, liquid limit, and/or soil classification.

All retests shall be performed at the Contractor expense.

153.07 Records and Quality Control Charts.

Maintain complete testing and inspection records by pay item number and make them accessible to the CO.

154 – Contractor Sampling And Testing

Delete this section in its entirety.

155 - Schedules for Construction Contracts

155.00_nat_03_23_2004

Replace Section 155 with the following.

155.01 This work consists of scheduling and monitoring all construction activities. See FAR Clause 52.236-15 Schedules for Construction Contracts.

155.02 Submit 3 copies of a construction schedule at least 14 days before work commences.

301 - Untreated Aggregate Courses

301.00_nat_03_27_2004

301 Title Change

Title. Change the title to: Section 301 Aggregate Courses 301.03_nat_03_24_2004

301.03 General.

Add the following:

Request approval in writing of the roadbed before placing aggregate.

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 320.

Establish stockpile sites at locations approved by the CO. Clear and grub stockpile sites according to Section 201.

Delete the following segment of the second paragraph:

“along with a representative 300-pound sample”

301.04_nat_03_24_2004

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.

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

Route and distribute hauling and leveling equipment over the width and length of each layer.

301.05_nat_03_24_2004

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 percent 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 percent 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_nat_03_24_2004

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 along the reconstructed road segment is within + ¼ inch of the specified thickness.

The maximum variation from the specified width will not exceed +12 inches at any point. The compacted width is not consistently above the specified width and the average of any four random measurements along the reconstructed road segment is within +4 inches of the specified width.

301.08_nat_03_24_2004

301.08(b) Plasticity Index.

Add the following to the first sentence: “and under Special Contract Requirement 703.05(c)(3)”.

301.09_nat_03_24_2004

301.09 Measurement.

Add the following: Measure aggregate by cubic yard compacted in place when payment is by contract quantities.

301.10 (Payment).

Delete the following:

…”adjusted according to Subsection 106.05”...

Table 301-1: Add the following:

Table 301-1—Acceptance Sampling and Testing Requirements.

Material or Product

Type of Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Subbase & Base Courses L, M, N, O, P, Q, R

Measured and tested conformance

(Subsection 106.04)

Plastic Limit - AASHTO T 90 3 per each abutment approach road

From the windrow or roadbed after processing

Yes 4 Hours

Table 301-1—Acceptance Sampling and Testing Requirements.

Material or

Product Type of

Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Aggregate Width Measured and tested conformance

(Subsection 106.04)

Width - - 3 per each abutment approach road

Roadbed after processing

- 4 Hours

Aggregate Thickness Measured and tested conformance

(Subsection 106.04)

Thickness - - 3 per each abutment approach road

Roadbed after processing

- 4 Hours

Additive Measured and tested conformance

(Subsection 106.04)

Amount of Additive - 3 per each abutment approach road

From the windrow or roadbed after processing

No 4 Hours

Table 301-1 Field Density Requirements.

Table 301-1: Delete laboratory and field density requirements for base, subbase, and surfacing and replace with the following:

Material or Product

Type of Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Base and Subbase

Measured and tested conformance (Subsection 106.04)

Moisture Density ---

Method C --- AASHTO T 99 1 per type and source of material

Source of material

Yes Before using in work

Method C-1 --- R-1 Marshall “ “ “ “

Method D --- AASHTO T 180 “ “ “ “

Method D-1 --- R-1 Marshall “ “ “ “

Compaction ---

Method C, C-1, D, D-1

--- AASHTO T 310 or other approved procedures

3 per each abutment approach road

In-place --- Before placing the next layer

Surfacing Measured and tested conformance (Subsection 106.04)

Moisture Density

Method C-1 --- R-1 Marshall “ “ “ Before using in work

Method D --- AASHTO T 180 “ “ “ “

Method D-1 --- R-1 Marshall “ “ “ “

Compaction

Method C, C-1, D, D-1

--- AASHTO T 310 or other approved procedures

3 per each abutment approach road

In-place --- Before placing the next layer

557 – Timber Structures

557.01 (Description)

The work shall consist of fabricating, furnishing, and erecting the boardwalk and bridges.

557.03 General

Replace the first sentence with the following:

Excavate and backfill according to Section 208.

557.04 Treated Timber.

Delete the first sentence of the third paragraph.

557.07 Countersinking.

Replace the last sentence with the following:

After bolts or lag screws (except lag screws in the running planks) are in place, fill the holes with hot pitch, asphalt roofing cement, or other CO approved filler.

557.20 (Measurement).

Replace the second paragraph with the following:

Measure untreated and treated structural timber and lumber as specified in Special Contract Requirement 109.02.

703 - Aggregate

703.05_nat_04_29_2004

703.05 Subbase, Base, & Surface Course Aggregate.

Replace (1) under 703.05(a) with the following:

(1) Los Angeles abrasion, AASHTO T 96 40% max.

Add the following to 703.05(b):

(3) Plastic limit, AASHTO T 90 Nonplastic

Replace (1) and add (3) under 703.05(c) with the following:

(1) Gradation Table 703-3

(3) Plasticity index, AASHTO T 90:

a) If the percent passing the No. 200 sieve is less than 12% 2 to 9

b) If the percent passing the No. 200 sieve is greater than 12% less than 2

703.08_nat_04_29_2004

703.05 Subbase, Base, & Surface Course Aggregate (Pit Run).

Delete (1) through (4) under 703.05(a)

Add the following to Tables 703-2:

% by Weight Passing Designated Sieve (AASHTO T11 and T-27) Grading Designation

Sieve Size L M N O P Q R 6 in. 100 100 4 in. 100 100 3 in. 100 100 2 in. 100 No. 4 15-45 15-45 15-45

Note: For Grading M, O, and Q the allowable deviations (+/-) from the TV are to the broad band limits.

703.09_nat_04_30_2004

Add the following to Tables 703-2:

Table 703b Graded Cinders.

% by Weight Passing Designated Sieve (AASHTO T-11 and T-27) Grading Designation

Sieve Size X Y Z

1.5 in. 100 100 1 in. 70-90 100 ¾ in. 70-98 No. 4 40-60 48-68 No. 200 14-30 16-32 Note: For Grading Y and Z the allowable deviations (+/-) from the TV are to the broad band limits.