FSSS.doc

ASPHALT REPAIRS MCPHEE MARINA ROAD

& PARKING LOT

Forest Service Supplemental Specifications (FSSS) Table of Contents

1Table of Contents

Preface 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 153 - Contractor Quality Control ……………………………………………………….18

155 - Schedules for Construction Contracts 157 - Soil Erosion Control 301 - Untreated Aggregate Courses 401 - Superpave Hot Asphaltic Concrete Pavement ……………………………………24 403 - Hot Asphalt concrete …………………………………………………………….33 634 - Permanent Pavement Markings ………………………………………………….35 635 - Temporary Traffic Control 702 - Asphalt Material ………………………………………………………… 703 - Aggregate

Preface

Preface_wo_03_15_2004_m 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.

101 - Terms, Format, and Definitions

101.00_nat_us_07_25_2005

101.01_nat_us_02_17_2005

101.01 Meaning of Terms.

Add the following:

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

101.03_nat_us_06_16_2006

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:

101.04_nat_us_06_16_2006

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”.

CDOT—Colorado Department of Transportation 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 “Contract quantities” that are identified in the bid schedule as “design quantities” (DQ) will be adjusted only when there are errors in the original design of 15% or more.

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.

102 - Bid, Award, and Execution of Contract

102.00_nat_us_02_16_2005

102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work

103.00_nat_us_02_16_2005

Deletions

Delete all but subsection 103.01 Intent of Contract.

104 - Control of Work

104.00_nat_us_06_16_2006

Deletions

Delete Sections 104.01, 104.02, and 104.04.

104.06_nat_us_02_17_2005

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.

105 - Control of Material

105.02_nat_us_01_18_2007

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.

105.05_nat_us_05_12_2004

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_nat_us_03_29_2005

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 if 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 in writing. 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_0213_us_02_11_2005

106.05 Delete

Delete subsection 106.05.

106.07_nat_us_05_11_2004

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

107.05_nat_us_05_11_2004

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06_nat_us_06_16_2006

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09_nat_us_06_16_2006

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

107.10_nat_us_06_16_2006

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 the 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.

Report all spills to:

Durango Dispatch (970)-385-1324

108 - Prosecution and Progress

108.00_nat_us_02_16_2005

108 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

109.00_nat_us_02_17_2005

109 Deletions

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.02_nat_us_06_16_2006

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

Contract quantities that are identified in the bid schedule as “design quantities” (DQ) will be adjusted only when there are errors in the original design of 15% or more. Contract items that are identified in the bid schedule as “actual quantities” (AQ) The contract quantity will be adjusted for authorized changes that affect the quantity or for errors made in computing this quantity.

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.

151 - Mobilization

151.01_0116_us_02_14_2005

Description

151.01.

Add the following:

Noxious weed control requirements:

Clean all construction equipment prior to entry onto the project area. Remove all dirt and plant parts and material that could carry noxious weed seeds into the project area. Only construction equipment so cleaned and inspected by the Forest Service will be allowed to operate within the project area. Treat all subsequent move-ins of construction equipment in the same manner as initial move-ins. “construction equipment” does not include personal vehicles, paving equipment or support equipment that remains on the main travel route.

Prior to the initial move-in, the contractor shall make all construction equipment available for inspection by the Forest Service at an agreed upon location. Provide the Forest Service at least 24 hours advance notification when equipment is ready for inspection

151.03_0116_us_03_30_2005

151.03

Add the following to the first paragraph:

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

Add the following to the beginning of paragraph (a).

If applicable, Section 153. — CONTRACTOR QUALITY CONTROL

153.03 Testing.

Delete this subsection in entirety and substitute the following:

153.03 Sampling and Testing

(a) Sampling. Sample material to be tested according to the Sampling and Testing

Requirements tables included at the end of each section. The sampling schedules and times will be provided by the generated by the contractor using a random number system. In addition, sample any material that appears defective or inconsistent with similar material being produced unless such material is voluntarily removed and replaced or corrected.

Sample and split samples according to AASHTO or other acceptable procedures. Allow the USFS the opportunity to witness all sampling. Immediately perform companion splits on all samples required. Store the Government’s portion of the sample or split sample in an acceptable container suitable for shipment and make available upon request for independent assurance sampling. Store all samples not requested until the end of the job and the CO will notify the contractor in writing as to their disposition.

Label all samples with the following information:

(1) Project number;

(2) Source of material;

(3) Pay item number;

(4) Sample number;

(5) Date sampled;

(6) Time sampled;

(7) Location sample taken;

(8) Name of person sampling;

(9) Name of person witnessing sampling; and

(10) Type of test required on sample.

(b) Testing. Perform testing according to the accepted quality control plan. Keep laboratory facilities clean and maintain all equipment in proper working condition. Allow unrestricted access for inspection and review of the facility.

Measurement and Payment 153.06

Delete in entirety and substitute the following:

153.06 Do not measure Contractor quality control for payment. Payment for this work shall be an indirect payment to other items.

155 - Schedules for Construction Contracts

155.00_nat_us_05_11_2004

155 Delete.

Delete Section 155 in its entirety.

157 - Soil Erosion Control

157.03_nat_us_02_24_2005

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.

Section 301. — UNTREATED AGGREGATE COURSES

Delete this section in entirety and replace with the following:

DESCRIPTION

301.01 This work consists of furnishing and placing one or more courses of aggregate and additives, if required, on a prepared subgrade.

MATERIALS

301.02 Aggregate. The aggregates shall meet the requirements of subsection

703.03.

Acceptance will be based on random samples taken from each lift.

301.03 Commercial Mineral Fillers. Portland cement shall conform to subsection 701.01. Hydrated lime shall conform to subsection 712.03.

CONSTRUCTION REQUIREMENTS

301.04 Placing. If the required compacted depth of the aggregate base course exceeds 6 inches, it shall be constructed in two or more layers of approximately equal thickness. The maximum compacted thickness of any one layer shall not exceed 6 inches. When vibratory or other approved types of special compacting equipment are used, the compacted depth of a single layer may be increased to 8 inches upon request, provided that specified density is achieved and written approval is given.

301.05 Mixing. The Contractor shall mix the aggregate by methods that insure a thorough and homogenous mixture.

301.06 Shaping and Compaction. Compaction of each layer shall continue until a density of not less than 95 percent of the maximum density determined in accordance with AASHTO T 180 has been achieved. The surface of each layer shall be maintained during the compaction operations so that a uniform texture is produced and the aggregates are firmly keyed. Water shall be uniformly applied during compaction in the quantity necessary for proper consolidation.

The surface of the base course will be tested with a 10 foot straightedge, or other approved device. The surface shall be tested prior to the application of any primer or pavement. The variation of the surface from the testing edge of the straightedge between any two contacts with the surface shall not exceed ¼ inch. All irregularities exceeding the specified tolerance shall be corrected to the satisfaction of the

CO at no additional cost to the Forest Service.

The above compaction and straightedge requirements shall not apply to shoulder gravel. Compaction of shoulder gravel shall be accomplished by wheel rolling, as directed.

301.07 Acceptance. See Table 301-1 for sampling and testing requirements and the acceptance quality characteristic category.

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

METHOD OF MEASUREMENT

301.08 Aggregate base course will be measured by the ton, or by the cubic yard compacted in place.

BASIS OF PAYMENT

301.09 The accepted quantities of aggregate base course, of the class specified, will be paid for at the contract price bid per ton as shown in the bid schedule.

Payment will be made under:

Pay Item Pay Unit

Aggregate Base Course

(Class )

Ton Water will not be measured and paid for separately but shall be included in the work.

301-1

SAMPLING AND TESTING REQUIREMENTS

FREQUENCY

Method C

after rolling.

AASHTO T90

Immediately after pugmill discharge or from windrow

CP-22

CP-80A

CP-80B

Compacted lift

Moisture density curve 1 per source

AASHTO

T180 Meth. D Aggregate source.

Section 401- SUPERPAVE HOT ASPHALT CONCRETE PAVEMENT

Description Delete the second paragraph and substitute the following:

401.01 The superpave hot asphaltic concrete pavement shall be CDOT grading (SX ) (75) (PG 58-28)

Materials

Delete in entirety this subsection and substitute the following

401.02 Conform to the following subsection:

Aggregates. Aggregates shall meet the applicable requirements of Section 703 - Aggregates.

Mineral Filler. Mineral filler shall meet the requirements of subsection 703.06.

Hydrated Lime. Hydrated lime shall meet the requirements of subsection

725.03.

Asphalt Cements. The type and grade of asphalt cement will be specified in the Contract.

The asphalt cement shall meet the applicable requirements of Section 702-Asphalt

Cements.

Construction Requirements

401.03 Composition of Mix (Job-Mix formula).

Delete in entirety and substitute the following

The bituminous plant mix shall be composed of a mixture of aggregate, filler or additives if required and approved, asphalt cement, and reclaimed material if permitted and used.

(a) Mix Design. The Contractor shall submit the following to the CO:

(1) A proposed hot mix asphalt mix design prepared in accordance with

Colorado Procedure 52, including a proposed job-mix gradation for each mixture required by the Contract which shall be wholly within the Master Range Table in

Section 703 before the tolerances shown in Section 401 are applied. The weight of lime shall be included in the total weight of the material passing the 75 μm (No.

200) sieve.

(2) The name of the refinery supplying the asphalt cement and the source of the anti-stripping additive.

The job-mix formula for each mixture shall establish a single percentage of aggregate passing each required sieve size, a single percentage of asphalt cement to be added to the aggregate, and a single temperature for the mixture at the discharge point of the plant.

(b) Mixtures Furnished to the Project. After the job-mix formula is established, all mixtures furnished for the project shall conform thereto within the ranges of tolerances listed in Table 401-1

Table 401-1 Asphalt Content

Asphalt Recycling Agent

Temperature of Mixture When Discharged from Mixer ±0.3%

±0.2%

±20 °F

1Hot Mix Asphalt – Item 403

1Passing the 9.5mm (3/8 inch) and larger sieve

2Passing the 4.75 mm (No. 4) and 2.36 mm (No. 8 sieves) 2Passing the 600 μm (No. 30) sieve 2Passing the 75 μm (No. 200) sieve ±6%

±5%

±4%

±2%

1When 100% passing is designated, there shall be no tolerance. When 90-100% passing is designated, 90% shall be the minimum; no tolerance shall be used.

2 These tolerances apply to the Contractor’s Quality Control Testing.

The job-mix formula for each mixture shall be in effect unless modified in writing on Form 43.

Should a change in sources of materials be made, a new job-mix formula shall be established before the new material is used. This new job-mix formula shall be in effect until modified by the CO. Requests made in writing by the

Contractor for changes in the job-mix formula will be considered. The job-mix formula may be changed by the CO if the change will produce a mixture of equal or better quality and will:

(1) Permit better utilization of available material, or

(2) Result in a saving in cost to the USFS through an adjustment in unit price.

Tests for cleanliness, abrasion loss, and percent of fractured faces will be made on representative samples of aggregate taken during production or from the stockpiles.

Hot mix asphalt (HMA) will be tested for moisture susceptibility by the

Contractor in accordance with Table 401-2. If a sample fails to meet the criteria shown in Table 401-2, the Contractor shall take corrective action before being permitted to continue production. If proper corrective action cannot be readily determined, the CO will suspend the use of such material until Laboratory tests indicate that the corrective measures taken by the Contractor will provide material that is in compliance.

Table 401-2

Result

Sampling

Frequency

Method B

or fraction thereof

(minimum)

401.07 Weather Limitations

Delete in entirety and substitute the following:

401.07 Weather Limitations and Placement Temperatures. Hot mix asphalt shall be placed only on properly prepared unfrozen surfaces which are free of water, snow, and ice. The hot mix asphalt shall be placed only when both the air and surface temperatures equal or exceed the temperatures specified in Table 401-3 and the CO determines that the weather conditions permit the pavement to be properly placed and compacted.

Table 401-3

PLACEMENT TEMPERATURE LIMITATIONS IN ºF

Compacted Layer Thickness in inches

Minimum Surface and Air Temperature ºF

Top Layer

<1½ 1½ - <3 3 or more

Note: Air temperature is taken in the shade. Surface is defined as the existing base on which the new pavement is to be placed.

If the temperature falls below the minimum air or surface temperatures, paving shall stop.

401.10 Mixing

Delete in entirety and substitute the following:

The dried aggregates and asphalt shall be combined in the mixer in the quantities required to meet the job-mix formula.

The materials shall be mixed until the aggregate is completely and uniformly coated, and the asphalt is uniformly distributed throughout the aggregate.

The minimum temperature of the mixture when discharged from the mixer and when delivered for use shall be as shown in Table 401-5:

Table 401-5

Asphalt Grade

Minimum Mix Discharge

Temperature, ºF*

Mix Temperature, ºF**

Minimum Delivered

PG 58-28

PG 64-22

PG 76-28

PG 64-28

PG 58-34

* The maximum mix discharge temperature shall not exceed the minimum discharge temperature by more than 30 ºF .

** Delivered mix temperature shall be measured behind the paver screed.

Hot-mix asphalt mixture shall be produced at the lowest temperature within the specified temperature range that produces a workable mix and provides for uniform coating of aggregates (95 percent minimum in accordance with AASHTO T 195), and that allows the required compaction to be achieved.

Storing or holding of asphalt mixture will be permitted provided the characteristics of the mixture are not altered. If storing or holding of the mixture causes segregation, excessive heat loss, or adversely affects the quality of the finished product, corrective action shall be taken. Unsuitable mixture shall be disposed of at the Contractor’s expense.

401.12 Production Start-Up Procedures.

(a) Pre-paving conference

Delete subsection (6)

(b) Control Strip.

Delete in entirety this subsection

401.12 Production Start-Up Procedures.

Delete in entirety this subsection

401.13 Placing and Finishing.

In paragraph 2 replace “Table 401-2” with “Table 401-3” Delete in entirety the last paragraph of this subsection.

401.14 Compacting.

Delete in entirety and substitute the following:

The hot mix asphalt shall be compacted by rolling. Both steel wheel and pneumatic tire rollers will be required. The number, weight, and type of rollers furnished shall be sufficient to obtain the required density while the mixture is in a workable condition. Compaction shall begin immediately after the mixture is placed and be continuous until the required density is obtained. When the mixture contains unmodified asphalt cement (PG 58-28 or PG 64-22) or modified (PG 58-34), and the surface temperature falls below 185 °F, further compaction effort shall not be applied unless approved. If the mixture contains modified asphalt cement (PG76-28 or PG 64-28) and the surface temperature falls below 230 °F, further compaction effort shall not be applied unless approved.

All roller marks shall be removed with the finish rolling. Use of vibratory rollers with the vibrator on will not be permitted during surface course final rolling and will not be permitted on any rolling on bridge decks covered with waterproofing membrane.

Pavement shall be compacted to a density of 92 to 96 percent of the maximum theoretical density, determined according to CP 51. Field density determinations will be made in accordance with CP 44 or 81.

The longitudinal joints shall be compacted to a target density of 92 percent of the maximum specific gravity. The tolerance shall be 4 percent. Maximum specific gravity will be that shown on the Form 43 for the asphalt mix used in construction of the joint. If two Forms 43 apply to the joint material, the average of the maximum specific gravities shown on the Forms 43 will be used. Density (percent relative compaction) will be determined in accordance with Colorado Procedure 44.

The Contractor shall obtain one 6 inch diameter core at a random location within each longitudinal joint sampling section for determination of the joint density. The

Contractor shall drill the cores at the location directed by the CO and in the presence of the CO. The CO will take possession of the cores for testing.

The Contractor may take additional cores at the expense of the Contractor. Coring locations shall be centered on the line where the joint between the two adjacent lifts abut at the surface. Core holes shall be repaired by the Contractor using materials and methods approved by the CO.

Along forms, curbs, headers, walls, and all other places not accessible to the rollers, the mixture shall be thoroughly compacted with mechanical tampers.

Any mixture that becomes loose and broken, mixed with dirt, or is in any way defective, shall be immediately removed and replaced with fresh hot mixture, and compacted to conform with the surrounding area.

The Contractor shall construct a compaction pavement test section (CTS) for each job mix for which 2000 or more tons are required for the project. The CTS will be used to evaluate the number of rollers and the most effective combination of rollers and rolling patterns for achieving the specified densities. Factors to be considered include, but are not limited to, the following:

(1) Number, size, and type of rollers.

(2) Amplitude, frequency, size and speed of vibratory rollers.

(3) Size, speed, and tire pressure of rubber tire rollers.

(4) Temperature of mixture being compacted.

(5) Roller patterns.

The CTS shall be constructed according to the following procedures:

The CTS shall be constructed to provide the nominal layer thickness specified. The first 500 tons of hot hot mix asphalt on the project location shall constitute the CTS.

The production and placement rates of the CTS shall closely approximate the anticipated production and placement rates for the remainder of the Contract.

Compaction of the CTS shall commence immediately after the hot hot mix asphalt has been spread, and shall be continuous and uniform over the entire CTS. For the CTS, compaction shall continue until no discernible increase in density is obtained by additional compactive efforts. All compaction shall be completed before the surface temperature of the mixture drops below 185 °F.

Approved types of rollers shall be used to achieve the specified density. The

Contractor shall determine what methods and procedures are to be used for the compaction operation. The compaction methods and procedures shall be used uniformly over the entire last 200 tons. The Contractor shall record the following information and a copy of this data shall be furnished to the CO.

(1) Type, size, amplitude, frequency, and speed of roller.

(2) Tire pressure for rubber tire rollers, and whether the pass for vibratory rollers is vibratory or static.

(3) Surface temperature of mixture behind the laydown machine and subsequent temperatures and densities after each roller pass.

(4) Sequence and distance from laydown machine for each roller, and number of passes of each roller to obtain specified density.

Two sets of random cores shall be taken within the last 200 tons of the CTS. Each set shall consist of a minimum of seven random corings. The locations of these cores shall be such that one set can serve as a duplicate of the other. One set of these cores shall be immediately submitted to the CO. This set will be used for determining acceptance of the CTS and determining density correction factors for nuclear density equipment. Densities of the random samples will be determined by cores according to CP 44. Density correction factors for nuclear density equipment will be determined according to CP 81. Coring shall be performed under USFS observation.

Coring will not be measured and paid for separately but shall be included in the work.

Each CTS shall be 500 tons. If in-place densities of the CTS, as determined by nuclear density equipment prior to determining density of the cores, meet the CTS density requirements, the Contractor may begin production paving and continue to place hot mix bituminous pavement under the following conditions:

(1) The period during which the Contractor continues to pave without test results from cores shall not exceed one working day.

(2) Construction proceeds at the Contractor’s risk. If correlation with the cores reveals that the densities do not meet the CTS requirements, the hot mix bituminous pavement placed subsequently will be subject to price reduction or removal and replacement.

After production paving work has begun, a new CTS shall be constructed when a change in the compaction process is implemented. A new CTS may be required for different layers of pavement. Each additional CTS shall be constructed as specified herein, and shall be sampled, tested and accepted or rejected as described herein.

All additional costs associated with construction of the CTS shall be at the

Contractor’s expense. The hot mix asphalt (HMA) placed in the CTS will be paid for in accordance with subsection 401.22, at the contract price for the HMA mixture.

401.16 Pavement Smoothness/roughness.

Delete in entirety this subsection and replace with the following:

401.16 Pavement Smoothness. Use a 10-foot metal straightedge to measure at right angles and parallel to the centerline. Defective areas are surface deviations in excess of

1/4 inch in 10 feet between any two contacts of the straightedge with the surface. Correct defective areas using approved methods.

401.17 Acceptance.

Delete in entirety this subsection and replace with the following:

401.17 Acceptance. Mineral filler, antistrip additive, and recycling agent will be evaluated under Subsections 106.02 and 106.03.

Asphalt binder will be evaluated under Subsections 106.04, 702.09.

Construction of the Superpave hot asphalt concrete pavement course will be evaluated under Subsections 106.02 and 106.04.

(a) Asphalt content. The upper and lower specification limits are the approved jobmix formula target value plus or minus 0.3 percent.

(b) VMA. The lower specification limit is 14.0

(c) Density. Pavement shall be compacted to a density of 92 to 96 percent of the maximum theoretical density, determined according to CP 51. Field density determinations will be made in accordance with CP 44 or 81.

(d) Pavement smoothness/roughness. The evaluation will be made after all defective areas are corrected. See Subsection 401.16.

(e) VFA. The specification limits are 65-75.

(f) Aggregate gradation. The upper and lower specification limits are the approved job-mix formula target values plus or minus the allowable deviations shown in Table

401-1.

Measurement

401.18

Delete in entirety this subsection and replace with the following:

Hot mix asphalt and asphalt cement will be measured by the ton. Batch weights will not be permitted as a method of measurement. The tonnage shall be the weight used in the accepted pavement. Deduction will not be made for the weight of asphalt cement in the mixture.

Payment 401.19 Delete in entirety this subsection and replace with the following:

All work performed and measured as described above will be paid for as provided in the respective sections for each type specified.

If there is no pay item for asphalt cement of the type specified it will not be measured and paid for separately but shall be included in the work.

Water used in the mixing plant, in accordance with subsection 401.14, to bring the lime-aggregate mixture to approved moisture content will not be measured and paid for separately but shall be included in the work.

Facilities for testing hot bituminous plant mix at the site of the commercial plant will not be paid for separately, but shall be included in the work.

When asphalt cement is a separate pay item, the amount of asphalt cement contained in reclaimed asphalt pavement (RAP) material will not be measured or paid for but shall be included in the work.

Section 403 – HOT ASPHALTIC CONCRETE PAVEMENT

Delete this section in entirety and substitute the following;

Description

403.01 This work consists of constructing one or more courses of hot mix asphalt

(HMA) pavement on a prepared base in accordance with these specifications, and in conformity with the lines, grades, thicknesses, and typical cross sections shown on the plans or established.

The HMA pavement shall be composed of a mixture of aggregate, filler if required, and asphalt cement.

Hot Mix Asphalt (Patching) consists of those quantities required for the replacement of unstable corrugated areas in the existing pavement, pipe trenches, areas removed for curb & gutter forms, areas between the curb & gutter or sidewalk and the existing paved parking lots, and areas designated on the plans.

Materials

403.02 The materials shall conform to the requirements of subsections 401.02

Construction Requirements

403.03 The construction requirements shall be as prescribed in subsections 401.03 through 401.16.

Areas to be patched shall be excavated and squared to a neat line, leaving the sides of the excavation vertical. Prior to placement of the patch the exposed sides of the existing pavement shall be thoroughly coated with Emulsified Asphalt (slow-setting).

Hot mix asphalt shall then be placed and compacted in succeeding layers not to exceed 3 inches in depth.

All existing asphalt surfaces shall be coated with Emulsified Asphalt (slow-setting).

403.04 Acceptance. As per section 401.17. See table 403-1 for sampling and testing requirements.

Method of Measurement

403.05 Hot mix asphalt will be measured as prescribed in subsection 401.18.

Basis of Payment

403.06 The accepted quantities of hot mix asphalt will be paid for in accordance with subsection 401.22, at the contract unit price per ton for the bituminous mixture.

Pay Item

Pay Unit

Hot Mix Asphalt (Grading )

Hot Mix Asphalt (Grading )

(Asphalt)

Hot Mix Asphalt

(Patching)(Asphalt)

Aggregate, asphalt cement, asphalt recycling agent, additives, hydrated lime, and all other work necessary to complete each hot mix asphalt item will not be paid for separately but shall be included in the unit price bid.

Excavation, preparation, and tack coat of areas to be patched and existing asphalt surfaces to be ovelaid will not be measured and paid for separately, but shall be included in the work.

403-1

SAMPLING AND TESTING REQUIREMENTS

FREQUENCY

fraction thereof

CP-41

Method C

after rolling.

mix or fraction thereof

CP-31B

CP-42

Aggregate cold feed or pugmill discharge or extraction.

Fractured faces and void content fine aggregate.

1 per 10,000 tons of mix or fraction thereof

fraction thereof

CP-44

CP-81

In the compacted lift.

CP-55

CP-51

CP-56

Plant discharge, at /or behind the paver

Section 634 - PERMANENT PAVEMENT MARKING

Construction Requirements

Delete this subsection and replace with the following:

634.05 Waterborne Traffic Paint. Striping shall be done when the air and pavement temperatures are at least 50° F. The pavement surface and weather conditions shall be conducive to satisfactory results. Paint shall meet the requirements of section 718.14.

Equipment shall be capable of painting a reasonably clean-edged stripe of the designated width ± ¼ inch and shall have a bead dispenser directly behind, synchronized with the paint applicator. For centerlines and lane lines, an automatic skip control shall be used that will paint a stripe with a gap that matches the existing striping.

Machines having multiple applicators shall be used for centerlines with “no passing zones.” In areas where machines are not practical, suitable hand-operated equipment shall be used. Stripes shall be protected until dry.

Paint and beads shall be applied within the following limits:

Application Rate or Coverage

Per Gallon of Paint Minimum

Maximum

Paint:

100 sq. ft.

110 sq. ft.

Beads:

AASHTO T-247-02

Type 1

5 lbs. 13 oz.

6 lbs. 3 oz.

63401 Pavement marking (waterborne), marina road

Gal 63402 Pavement marking (waterborne), marina parking lot

Gal Section 635. - TEMPORARY TRAFFIC CONTROL

Description

635.01 Delete this paragraph and replace with the following.

This work consists of furnishing, installing, moving, maintaining and removing temporary traffic signs, advance warning arrow panels, flashing beacon (portable), barricades, channelizing devices, delineators, temporary traffic signals, masking and unmasking existing signs in construction zones, and concrete barriers as required by the Manual on Uniform Traffic Control Devices. When a device is not in use, the Contractor may remove it from the project for the period it is not needed. Devices temporarily not in use shall, as a minimum, be removed from the shoulder area. Moving will include devices removed from the project and later returned to use.

The Contractor’s Superintendent and all others serving in a similar supervisory capacity shall have completed a CDOT-approved two-day Traffic Control Supervisor training as offered by the CCA. The one-day ATSSA Traffic Control Technician (TCT) training along with the two-day ATSSA Traffic Control Supervisor training will serve as an alternate. If the alternate is chosen, the Contractor shall provide written evidence that at least an 80 percent score was achieved in both of the two training classes. The certifications of achievement for all appropriate staff shall be submitted to the CO at the preconstruction conference.

This work also includes Traffic Control Management, flagging and pilot car operation.

Construction Requirements

635.02 Flaggers Delete this paragraph and replace with the following:

Flagging shall be performed as described in the latest edition of part VI of the MUTCD.

All traffic control personnel shall wear safety apparel and hardhats meeting the requirements of the latest version of the ISEA “American National Standard for High-Visibility Safety Apparel and Headwear”. Safety apparel shall be labeled as meeting the standard performance for Class 2 or Class 3 risk exposure. The apparel and hardhat background material color shall be either fluorescent orange-red or fluorescent yellow-green as defined in the standard. The retroreflective material shall be either orange, yellow, white, silver, yellow-green, or a fluorescent version of these colors, and shall be visible at a minimum distance of 1,000 feet.

(a) The Contractor shall provide all flagging through the project necessary to assure proper safety to traffic. All flagging personnel shall have completed the

Department’s minimum training requirements for flaggers within two years prior to starting work on the project.

(b) Reimbursement for flagging shall be limited to the following areas:

(1) The entire construction area under contract and for a distance of 500 feet outside the project limits or approach to project; except that if the project consists of two or more sections, the limits will apply to each section individually.

(2) Those areas beyond the above-described limits where the CO determines the use of flaggers are necessary to provide adequate warning to traffic.

(c) The authorized duties of flaggers consist of directing the traveling public and the construction traffic that affects the traveling public within the project limits.

Add the following:

635.03 Traffic Control Plan. A traffic control plan prepared by certified ATSSA personnel must be submitted to the CO for approval a minimum of 5 working days prior to construction. All construction signs and traffic control devices will be paid for as incidental to traffic management.

63501

Flagging

Hour

63502 Traffic control management

Day

SECTION 702 - BITUMINOUS MATERIALS

Delete this entire section and replace with the following.

702.01 Asphalt Cements.

(a) Superpave Performance Graded Binders. Superpave Performance Graded

Binders shall conform to the requirements listed in Table 702-1. (Taken from

AASHTO Provisional Standard MP1) Table702-1

SUPERPAVE PERFORMANCE GRADED BINDERS

Samples of the PG binder for acceptance shall be sampled on the project as stated in the Schedule of the Field Materials Manual. The Department will test for acid modification and alkaline modification during the binder certification process. Thereafter, the Department will randomly test for acid modification and alkaline modification.

(b) Dampproofing. Asphalt for dampproofing shall conform to the requirements of ASTM D 449, and the asphaltic primer shall conform to the requirements of ASTM D 41.

702.02 Liquid Asphaltic Materials. Liquid asphaltic materials shall conform to the requirements of AASHTO M 81, M 82, and ASTM D 2026 for the designated types and grades.

Primer for dampproofing shall meet the requirements of ASTM D 41.

RC-800 (Rubberized) shall be a blend of asphalt cement, rubber, and cutter stock. The asphalt cement shall be blended with a minimum of 1½ percent by weight of rubber prior to adding cutter stock. The final product shall meet the requirements of Table 702-2.

Table 702-2

702.03 Emulsified Asphalts. Emulsified asphalts shall conform to AASHTO M 140 or M 208 for the designated types and grades. Emulsified asphalt and aggregate used for seal coats shall be sampled and will be tested for information only according to CP-L 2213, Chip Seal Compatibility.

(a) Polymerized emulsions for seal coat shall conform to the following requirements for CRS-2P (Cationic, Polymerized) or HFRS-2P (Anionic, Polymerized, High Float). CRS-2P or HFRS-2P shall be an emulsified blend of polymerized asphalt, water, and emulsifiers. The asphalt cement shall be polymerized prior to emulsification and shall contain a minimum of 3.0 percent polymer by weight of asphalt cement. The emulsion standing undisturbed for a minimum of 24 hours shall show no white, milky separation but shall be smooth and homogeneous throughout. The emulsion shall be pumpable and suitable for application through a distributor. The emulsified blend shall conform to the requirements listed in Table 702-3.

Table 702-3

(b) Emulsion for Prime Coat. Emulsion for prime coat shall conform to the following requirements for either Asphalt Emulsion Prime in Table 702-4, or Penetrating Priming Stabilizer in Table 702-5.

Table 702-4

FOR ASPHALT EMULSION PRIME

Table 702-5

FOR PENETRATING PRIMING STABILIZER

(c) Recycling Agent. Recycling Agent for Item 406, Cold Bituminous Pavement

(Recycle) shall be either a high float emulsified asphalt (polymerized) or an emulsified recycling agent as follows:

1. High Float Emulsified Asphalt (Polymerized). High Float Emulsified

Asphalt (Polymerized) for Cold Bituminous Pavement (Recycle) shall be an emulsified blend of polymer modified asphalt, water, and emulsifiers conforming to Table 702-6 for HFMS-2sP. The asphalt cement shall be polymerized prior to emulsification, and shall contain a minimum of three percent polymer.

The emulsion standing undisturbed for a minimum of 24 hours shall show no white, milky separation, and shall be smooth and homogeneous throughout.

The emulsion shall be pumpable and suitable for application through a pressure distributor.

Table702-6

HIGH FLOAT EMULSIFIED ASPHALT

(POLYMERIZED) (HFMS-2sP)

2. Emulsified Recycling Agent. Emulsified Recycling Agent for use in Cold

Bituminous Pavement (Recycle) shall conform to the requirements in Table 702-7.

Table 702-7

EMULSIFIED RECYCLING AGENT

702.04 Rejuvenating Agents. Asphalt rejuvenating agents (ARA) shall be composed of a petroleum resin-oil base uniformly emulsified with water and shall conform to the physical and chemical requirements of Table 702-8.

Table 702-8

ASPHALT REJUVENATING AGENT

For hot-in-place recycling ARA 1P is an acceptable alternative to ARA. ARA-1P shall meet the requirements below:

Emulsified Polymer Modified Asphalt Rejuvenating Agent (ARA-1P) for use in hotin- place recycling of bituminous pavements shall be modified with a minimum of 3.0 percent styrene-butadiene solution…