EN-25-PAVE-1 Book IIIB.pdf

2025 RESURFACING FROM TOLL PLAZA E TO I-25

CONTRACT NO. EN-25-PAVE-1

BOOK IIIB

PROJECT SPECIAL TECHNICAL SPECIFICATIONS

Prepared for:

E-470 Public Highway Authority

Prepared by:

Short Elliot Hendrickson, Inc. (SEH)

2000 South Colorado Blvd, Suite 1200 Colorado Center Tower Two

Denver, CO 80222

(720) 490-4966

June 10, 2025

Invitation for Bid

E-470 – Resurfacing from Toll Plaza E to I-25 - Book IIIB Project Special Technical Specifications June 10, 2025

PS-ii

PROJECT SPECIAL TECHNICAL SPECIFICATIONS

The Colorado Department of Transportation 2024 Standard Specifications for Road and Bridge Construction controls construction of this project. The following special provisions supplement or modify the Standard Specifications and take precedence over the Standard Specifications and plans. When specifications or special provisions contain both English units and SI units, the English units apply and are the specification requirement.

Date Page Index Pages (June 10, 2025) PS-ii Revision of Section 106 – Quality Control and Quality Assurance – Inspection Control of Work (June 10, 2025) PS-1-2 Revision of Section 106, 627 and 713 – Glass Beads for Pavement Marking (June 10, 2025) PS-3-4 Revision of Section 107 – Legal Relations and Responsibilities to Public (June 10, 2025) PS-5 Revision of Section 109 – Measurement and Payment (June 10, 2025) PS-6 Revision of Section 202 – Removal of Asphalt Mat (Planing) (June 10, 2025) PS-7 Revision of Section 401 – Longitudinal Joints (June 10, 2025) PS-8 Revision of Sections 401 and 703 – Stone Matrix Asphalt Pavement (June 10, 2025) PS-9-10 Revision of Section 403 – Hot Mix Asphalt (June 10, 2025) PS-11-13 Revision of Section 403 – Stone Matrix Asphalt Pavement (June 10, 2025) PS-14-16 Revision of Section 403 – Hot Mix Asphalt Ticket Collection (June 10, 2025) PS-17 Revision of Section 407 – Tack Coat (June 10, 2025) PS-18 Revision of Section 627 – Modified Epoxy Pavement Marking (Inlaid) (June 10, 2025) PS-19 Revision of Section 627 – Temporary Pavement Marking (June 10, 2025) PS-20 Revision of Sections 627 and 708 – Pavement Marking With Waterborne Paint and Low VOC Solvent Base Paint (June 10, 2025) PS-21 Revision of Section 630 – Construction Zone Traffic Control (June 10, 2025) PS-22-24 Revision of Section 630 – Project Information Sign (June 10, 2025) PS-25 Addition of Section 633 – E-470 Toll Allowance (June 10, 2025) PS-26 Revision of Section 702 – Hot Poured Joint and Crack Sealant (June 10, 2025) PS-27

PS-1

REVISION OF SECTION 106

QUALITY CONTROL AND QUALITY ASSURANCE - INSPECTION

CONTROL OF WORK

Section 106 of the Standard Specifications is hereby revised for this project as follows:

Subsection 106.03 shall include the following:

Quality Control and Quality Assurance. Process and Quality Control (PC and QC) is the responsibility of the Contractor. Process Control and Quality Control are interchangeable terms for the Contractor’s responsibility to ensure that the produced work meets or exceeds the contract’s quality levels. The Contractor's QC shall consist of all necessary inspection procedures to assure that the quality of all work and the completed project conforms to contract requirements.

The Contractor's QC Manager shall be responsible for quality requirements as defined in the specifications and the Contractor's approved QC plan (QCP). The QC Manager shall not be the Contractor's Superintendent.

Quality Assurance (QA) and acceptance are the responsibility of the Engineer. QA administration will be performed to the extent necessary to assure contract compliance. The Contractor shall make provisions such that the Engineer may inspect QC work in progress and perform QA testing. The Contractor's testing facilities and production plants and each location where testing is performed shall be safely accessible to the Engineer at all times. The Contractor shall provide means of safe access to all work, including ladders, scaffold stairs or lifts and harnesses. The Engineer will have the authority to verify and accept the qualifications and the quality of work by QC inspection and testing personnel in accordance with Section 108.06.

(a) Quality Control Plan (QCP). The Contractor shall submit a written QCP to the Engineer prior to the beginning of work. The QCP shall list all of the Contractor’s QC inspection and materials testing procedures to be utilized by the Contractor to ensure that all work conforms to contract requirements.

Where specific work items have more descriptive requirements for QC, the Contractor’s QCP shall meet or exceed those specifications. The QCP shall be reviewed and accepted in writing by the Engineer before work begins.

The QCP shall address the following:

(1) The name, qualifications, duties, responsibilities and authorities of each person assigned a QC function.

(2) A description of the responsibilities and authority, and a resume of experience, of the QC Manager.

(3) Procedures for preparing, reviewing and presenting materials submittals, including those of subcontractors, vendors, offsite fabricators, suppliers and purchasing agents, for assuring they conform to contract requirements. The schedule in the 2021 CDOT Field Materials Manual will govern minimum submittal requirements.

(4) QC inspection methods and procedures for all stages of operations. At a minimum, the items in the CDOT Inspectors Checklist and CDOT Construction Manual shall be inspected.

(5) Reporting procedures, including proposed reporting formats for inspection for all phases of the work.

(6) Names of testing and engineering firms to be used, if any.

(7) Procedures for identifying, evaluating, and reporting non-conformance discovered during QC inspections and testing.

(b) Documentation. The Contractor shall maintain current records of quality control operations activities, and tests performed including the work of vendors and subcontractors. These records shall be in the form shown in the QCP and shall indicate, as a minimum, the subcontractor, if any, the number of personnel working, the weather conditions encountered, any delays encountered, and acknowledgment of deficiencies noted along with the corrective actions taken on current and previous deficiencies. In addition, these records shall include factual evidence that required activities or tests have been performed, including but not limited to the following:

PS-2

-2-

REVISION OF SECTION 106

QUALITY CONTROL AND QUALITY ASSURANCE - INSPECTION

CONTROL OF WORK

(1) Type and number of quality control activities and tests involved.

(2) Results of quality control activities or tests.

(3) Nature of defects, causes for rejection, etc.

(4) Proposed remedial action.

(5) Corrective actions taken.

Such records shall cover both conforming and defective or deficient features and shall include a statement that work incorporated in the project complies with the Contract. Copies of these records shall be submitted to the Engineer in a weekly certified package. Failure to provide the Engineer with the necessary documentation will result in the suspension of progress payments until the documentation has been completed and accepted by the Engineer. E-470 Quality Assurance documentation may not be used as supporting documentation for the Contractor's certification.

(c) Frequency. QC inspection and testing at all intervals of work shall be performed in accordance with the accepted QCP. The QCP shall contain provisions for increased frequencies of inspection and testing when operations or work does not conform to the Contract.

(d) Work Not Conforming to QCP. When work is not conforming to the QCP or specifications, the Contractor shall take immediate action to bring the work back into control. Except where the cause of the problem is readily apparent and corrected without delay, work shall be suspended until the source of the problem is determined and corrected. A written explanation of actions taken to correct control problems shall accompany the test data and be submitted to the Engineer on the day the actions are taken.

Repeated non-conformance shall be considered as recurring deficiencies. Recurring deficiencies shall be considered as evidence that required QC is not being provided. When the Engineer determines that operations are producing recurring defects that do not conform to the Contract and the QCP requirements, the Contractor will be notified that the present work is unacceptable. Work shall not continue until the QC Manager has submitted a written proposal addressing corrective procedures that the Contractor shall take to prevent recurrence of the non-conforming work. The proposal shall be accepted in writing by the Engineer before operations resume.

(e) Construction Observation Certification. The Contractor shall provide adequate Quality Control and observation of construction in order to certify in writing that all work conforms with the final plans and specifications.

The Contractor shall provide weekly certification packages as follows:

"The items listed above this certification were inspected and found to conform to the plans and specifications except as noted."

The Contractor shall provide monthly certifications prior to the payment of interim progress payments as follows:

"The construction on this project is being conducted in conformance with the plans and specifications."

The Contractor shall provide a final certification at the completion of the project and prior to final acceptance as follows:

"The project has been completed in conformity with the plans and specifications including authorized changes and has been reviewed for obvious safety deficiencies; The project Right of Way appears to be free from unauthorized encroachments resulting from construction on this project."

PS-3

REVISION OF SECTION 106, 627 AND 713

GLASS BEADS FOR PAVEMENT MARKING

Sections 106, 627, and 713 are hereby revised for this project as follows:

Subsection 106.11 shall include the following:

All post-consumer and industrial glass beads for pavement marking shall have been manufactured from North American glass waste streams in the United States of America. The bead manufacturer shall submit a COC in accordance with subsection 106.12 confirming that North American glass waste streams were used in the manufacture of the glass beads.

Subsection 627.04 shall include the following:

Glass beads shall be applied into the paint by means of a low pressure, gravity drop bead applicator. In subsection 627.05, seventh paragraph, delete the second sentence and replace with the following:

Glass beads shall be applied into the epoxy pavement marking by means of a low pressure, gravity drop bead applicator.

In subsection 627.05, delete the last paragraph and replace with the following:

Epoxy pavement marking and beads shall be applied within the following limits:

Application Rate or Coverage Per Gallon of Epoxy Pavement Marking

Minimum Maximum 16 – 18 mil marking 90 sq. ft. 100 sq. ft.

Beads 18 lbs. 20 lbs.

Subsection 627.06 (c) shall include the following:

Glass beads shall be applied into the thermoplastic pavement marking by means of a low pressure, gravity drop bead applicator.

In subsection 713.08, delete the first and third paragraphs and replace with the following:

713.08 Glass Beads for Pavement Marking. Glass beads for pavement marking shall conform to AASHTO M 247, except for the following:

(1) Gradation:

U.S. Mesh Microns % Retained 16 1400 0 - 10 18 1000 20 - 35 30 600 50 - 70 50 300 95 - 100

(2) Roundness: All beads shall meet a minimum of 80 percent true spheres in accordance with the office of Federal Lands Highways FLH T520 or a computerized optical testing method.

(3) Color / Clarity: Beads shall be colorless, clear, and free of carbon residues.

PS-4

REVISION OF SECTION 106, 627 and 713

GLASS BEADS FOR PAVEMENT MARKING

(4) Refractive Index: Minimum 1.51 by oil immersion method.

(5) Air Inclusions: Less than 5 percent by visual count.

(6) Coatings: Per manufacturer’s recommendation for optimum adhesion and embedment.

(7) Chemical Resistance: Beads shall be resistant to hydrochloric acid, water, calcium chloride, and sodium sulfide as tested per methods outlined in sections 4.3.6 to 4.3.9 of the TT-B Federal Spec. 1325D.

(8) A minimum of 40 percent of the total weight shall be manufactured using a molten kiln direct melt method. All molten kiln direct melt glass beads shall be above the 600 µm (#30) sieve.

(9) Glass beads used for any type of pavement marking shall not contain more than 75 parts per million

(ppm) arsenic, 75 ppm antimony and 100 ppm lead, as tested in accordance with EPA methods 3052 and 6010C, or other approved testing method.

PS-5

REVISION OF SECTION 107

LEGAL RELATIONS AND RESPONSIBILITIES TO PUBLIC

Section 107 of the Standard Specifications and General Conditions for this project are hereby revised for this project as follows:

Subsection 107.02 shall include the following:

Known permits for this project that have been collected on behalf of E-470 or those that the Contractor shall obtain include:

• Colorado Department of Public Health and Environment (CDPHE) Air Pollution Emission Notice (APEN) Permit - The Contractor shall obtain this permit from CDPHE and comply with its conditions.

The Contractor shall submit copies of all fully executed permits to the Engineer prior to commencing the work under the permit.

PS-6

REVISION OF SECTION 109

MEASUREMENT AND PAYMENT

Section 109 of the Standard Specifications is hereby revised for this project as follows:

Subsection 109.06 Partial Payments, of the General Provisions shall include the following:

Asphalt Cement Cost Adjustments. The bid unit price for asphalt items shall include asphalt market cost fluctuations and there are no asphalt cement cost adjustments for this project.

PS-7

REVISION OF SECTION 202

REMOVAL OF ASPHALT MAT (PLANING)

Section 202 of the Standard Specifications is hereby revised for this project as follows:

Subsection 202.09 shall include the following:

Removal of Asphalt Mat (Planing) shall consist of removing existing asphalt overlay from the existing bridge deck and approaches (approach slabs) to within 1-inch of the existing concrete bridge deck as shown in the bridge plans or as directed. Care shall be exercised to avoid damage to the existing waterproofing membrane. Small width rotomills (1-foot head) and/or low impact tools shall be used in confined areas.

Damage to the existing waterproof membrane or concrete surfaces shall be repaired at the direction of the Engineer by the Contractor without compensation or time extension.

Removed asphalt millings shall become the property of the Contractor and shall be stockpiled by the Contractor for later use as pavement shouldering material. Any asphalt millings not needed for shouldering or other approved project uses shall be removed from the right of way and disposed of properly off site by the Contractor and the stockpile site(s) cleaned and reclaimed according to the Final Grading/Erosion Control Plans.

PS-8

REVISION OF SECTION 401

LONGITUDINAL JOINTS

Section 401 of the Standard Specifications is hereby revised for this project as follows:

In subsection 401.17, delete the fourth and fifth paragraphs and replace with the following:

The longitudinal joints shall be compacted to a target density of 90 to 96% percent of the theoretical maximum specific gravity. The theoretical maximum specific gravity used to determine the joint density will be the average of the daily theoretical maximum specific gravities for the material that was placed on either side of the joint. Density (percent relative compaction) will be determined in accordance with CP 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 mark and drill the cores at the location directed by the Engineer and in the presence of the Engineer. The Engineer will take possession of the cores for testing. The Contractor may take additional cores at his own expense. Coring locations shall be centered on the visible line where the joint between the two adjacent lifts abuts the surface. The center of all joint cores shall be within 1 inch of this visible joint line. Core holes shall be repaired by the Contractor using materials and methods approved by the Engineer. QC and QA joint coring shall be completed within five calendar days of joint construction.

Longitudinal joint coring applies to all pavement lifts. When constructing joints in an echelon paving process, the joints shall be clearly marked to ensure consistent coring location. In small areas, such as intersections, where the Engineer prescribes paving and phasing methods, the Engineer may temporarily waive the requirement for joint density testing.

PS-9

REVISION OF SECTIONS 401 AND 703

STONE MATRIX ASPHALT PAVEMENT

Sections 401 and 703 of the Standard Specifications are hereby revised for this project as follows:

Subsection 401.02 shall include the following:

Recycled Asphalt Pavement (RAP) shall not be used in Stone Matrix Asphalt (SMA) mix.

Subsection 401.02 shall include the following:

Warm mix asphalt (WMA) is allowed as an alternate to hot mix asphalt provided that all material requirements and specification standards are met and as approved by the Authority.

Subsection 401.09 shall include the following:

Each SMA load shall be completely covered and securely fastened with a full tarp.

Subsection 401.16 shall include the following:

The SMA mixture shall be transported and placed on the roadway without drain-down or flushing. All flushed areas behind the paver shall be removed immediately upon discovery. If more than 50 square feet of flushed SMA pavement is ordered removed and replaced in any continuous 500 linear feet of paver width laydown, operations shall be discontinued until the source of the flushing has been found and corrected. The Engineer will designate the depth and area of all flushed areas requiring removal and replacement. All costs associated with the removal and replacement of the flushed areas shall be at the Contractor’s expense.

Subsection 401.17 shall include the following:

Rollers shall not be used in a vibratory mode on SMA unless they are first used successfully in the demonstration control strip specified in subsection 403.03. Pneumatic wheel rollers shall not be used on SMA mix.

Stone Matrix Asphalt Pavement shall be placed and compacted in accordance with the temperatures listed in subsection 401.07 as revised for this project.

The relative compaction for all SMA mixtures will be measured from roadway cores in accordance with CP 44, Method B, unless the SMA mixture is being placed on a structure (bridge deck) in which case the Engineer may specify that nuclear gauge measurements be used.

The Contractor shall use a material transfer device, capable of re-mixing asphalt materials, when paving the top lift.

When cores are used, the Contractor shall provide all labor and equipment for the coring operation and filling the core holes. When nuclear density gauges are used, the tests will be performed in accordance with CP 81 and CP 82.

In-place density for SMA shall be 93 to 97 percent of the SMA mix maximum specific gravity as measured according to CP 51. Longitudinal joints shall be compacted to a target density of 93% of the maximum specific gravity with a tolerance of +/-3%. The 6” core shall be centered on the longitudinal joint.

Subsection 401.22 shall include the following:

Acceptance, testing, and pay factors for SMA shall be in accordance with subsections 105.05 and 106.05 as revised for this project for Hot Mix Asphalt.

PS-10

REVISION OF SECTIONS 401 AND 703

Subsection 703.06 shall include the following:

Mineral filler for the Stone Matrix Asphalt pavement shall be limestone dust and shall meet the requirements of this subsection and the following:

Plasticity Index (AASHTO T90) 4% Maximum

The Contractor shall submit hydrometer analysis (AASHTO T88) for the mineral filler used in the SMA mix.

PS-11

REVISION OF SECTION 403

HOT MIX ASPHALT

Section 403 of the Standard Specifications is hereby revised for this project as follows:

Subsection 403.02 shall include the following:

The design mix for hot mix asphalt shall conform to the following:

Table 403-1

Property Test Method Value For Grading

S(100) Air Voids, percent at:

N (design) CPL 5115 3.5 – 4.5

Lab Compaction (Revolutions):

N (design) CPL 5115 8

Stability, minimum CPL 5106 28 Aggregate Retained on the 4.75 mm (No. 4) Sieve with at least 2 Mechanically Induced fractured faces, % minimum

CP 45 60

Accelerated Moisture Susceptibility Tensile Strength Ratio (Lottman), minimum

CPL 5109

Method B 80

Minimum Dry Split Tensile Strength, kPa (psi) CPL 5109 Method B 205 (30)

Grade of Asphalt Cement, Top Layer PG 64-22

Grade of Asphalt Cement, Layers below Top PG 64-22 Voids in the Mineral Aggregate (VMA) % minimum CP 48 See Table 403-2

Voids Filled with Asphalt (VFA), % AI MS-2 65-80 Note: AI MS-2 = Asphalt Institute Manual Series 2 Note: The current version of CPL 5115 is available from the Region Materials Engineer.

Note: Mixes with gradations having less than 40% passing the 4.75 mm (No. 4) sieve shall be approached with caution because of constructability problems.

Note: Gradations for mixes with a nominal maximum aggregate size of 3/4” to 3/8” are considered a coarse gradation if they pass below the maximum density line at the #8 screen.

All mix designs shall be run with a gyratory compaction angle of 1.25 degrees and properties must satisfy Table 403-1.

PS-12

HOT MIX ASPHALT

Table 403-2

Nominal Maximum Size*, mm (inches)

Minimum Voids in the Mineral Aggregate (VMA) ***Design Air Voids **

3.5% 4.0% 4.5% 5.0%

37.5 (1½) 11.6 11.7 11.8

N/A

25.0 (1) 12.6 12.7 12.8

19.0 (¾) 13.6 13.7 13.8

12.5 (½) 14.6 14.7 14.8

9.5 (⅜) 15.6 15.7 15.8

4.75 (No. 4) 16.6 16.7 16.8 16.9

* The Nominal Maximum Size is defined as one sieve larger than the first sieve to retain more than 10%.

** Interpolate specified VMA values for design air voids between those listed.

*** Extrapolate specified VMA values for production air voids beyond those listed.

The Contractor shall prepare a quality control plan outlining the steps taken to minimize segregation of HMA.

This plan shall be submitted to the Engineer and approved prior to beginning the paving operations. When the Engineer determines that segregation is unacceptable, the paving shall stop and the cause of segregation shall be corrected before paving operations will be allowed to resume.

Hot mix asphalt for patching shall conform to the gradation requirements for Hot Mix Asphalt (Grading S).

A minimum of 1 percent hydrated lime by weight of the combined aggregate shall be added to the aggregate for all hot mix asphalt.

Acceptance samples shall be taken as per CDOT CP-41.

Section 403.02 shall include the following:

Warm mix asphalt (WMA) is allowed as an alternate to hot mix asphalt provided that all material requirements and specification standards are met and as approved by the Authority.

Subsection 403.03 shall include the following:

403.03 Hot mix asphalt shall be placed and compacted in succeeding layers as shown on the drawings.

PS-13

-3-

REVISION OF SECTION 403

HOT MIX ASPHALT

Delete subsection 403.05 and replace with the following:

403.05 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.

Payment will be made under:

Pay Item Pay Unit Hot Mix Asphalt (Grading S) (100) (PG 64-22) Ton

Aggregate, 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. When the pay item includes the PG binder grade, the asphalt cement will not be measured and paid for separately, but shall be included in the work. When the pay item does not include the PG binder grade, asphalt cement will be measured and paid for in accordance with Section 411.

PS-14

Subsection 403.01 shall include the following:

This work includes placing a Stone Matrix Asphalt (SMA) pavement as shown on the plans.

Subsection 403.02 shall include the following:

The SMA gradation for this project shall be ½” nominal size per Table 703-5.

Recycled Asphalt Pavement (RAP) shall not be used in Stone Matrix Asphalt (SMA) mix. Recycled Asphalt Shingles (RAS) shall not be used in SMA mix.

Mixture design and field control testing of SMA shall be performed using the SuperPave (CPL 5115, 100 Gyrations).

A minimum of two weeks prior to the proposed use of any Stone Matrix Asphalt pavement on the project, a pre-paving conference will be conducted. At or before that time, the Contractor shall submit to the Engineer, a mix design meeting the appropriate specification requirements for one of the following:

The SuperPave SMA mix design shall conform to the requirements of Table 403-1a:

Table 403-1a Property Test Method Value for SMA

Air Voids, percent at: N(Design) CPL 5115 3.0 – 4.0 Lab compaction (Revolutions) N(Design) CPL 5115 100

Accelerated Moisture Susceptibility, tensile strength Ratio, (Lottman), minimum

CPL 5109,

Method B 70

Minimum Dry Split Tensile Strength, psi

CPL 5109,

Method B 30

Grade of Asphalt Cement PG 76-28 Voids in the Mineral Aggregate (VMA) %, minimum CP 48 17

Draindown at Production Temperature

AASHTO

T305 0.3 maximum

% VCA1MIX AASHTO

R 46 Less than VCADRC2

Note: The current version of CPL 5115 is available from the Region Materials Engineer

Note: Copies of AASHTO R 46 and M 325 can be obtained from the Region Materials Engineer

Note: 1Voids in the Coarse Aggregate Note: 2Dry-rodded condition

PS-15

REVISION OF SECTION 403

STONE MATRIX ASPHALT PAVEMENT

The Contractor will establish construction targets for asphalt cement and all mix properties at air voids up to 1.0 percent below the mix design optimum.

A minimum of 1 percent hydrated lime by weight of the combined aggregate shall be added to the aggregate for all Stone Matrix Asphalt.

The SMA Mix design must be approved by the Engineer before any pavement is placed on the project. In addition, the Contractor shall provide field control testing during production of the SMA mix and for the demonstration control strip. The Contractor shall perform the following tests and provide the results to the Engineer during production:

For the SuperPave SMA mix design, the Contractor shall perform the following tests and provide the results to the Engineer during production:

Superpave Mix Property Frequency Draindown (AASHTO T 305) 1/1000 tons or fraction thereof Percent Voids in the total mix @ N(design) 1/1000 tons or fraction thereof VMA (Percent Voids in the Mineral Aggregate) @ N(design) 1/1000 tons or fraction thereof Lottman, CPL 5109, Method B 1/5000 tons or fraction thereof Dry Tensile Strength, CPL 5109 1/5000 tons or fraction thereof Percent AC & Aggregate Gradation CP 5120 1/1000 tons or fraction thereof

Subsection 403.03 shall include the following:

The mineral filler for SMA shall be stored in a separate silo and added automatically in the correct proportion.

The mineral filler addition equipment shall be electronically or mechanically interlocked to the aggregate feed sensors so that the proper amount of mineral filler is added whenever SMA is produced.

The SMA mineral filler shall be added at the same point the asphalt cement is added to the aggregate.

Tack coat between the existing pavement and Stone Matrix Asphalt pavement shall be placed at a rate between 0.03 and 0.05 gallons per square yard.

Before proceeding with SMA placement, the Contractor shall demonstrate the ability to produce and place a satisfactory mix in a Demonstration Control Strip (DCS). The Contractor will coordinate with the Engineer on the proposed location of the DCS. The DCS shall consist of a minimum quantity of 500 tons placed in one lane, full width. Within the last 200 tons of SMA placed in the DCS, the Contractor shall determine properties (VMA, Voids, in-place density, AC content, gradation, and Marshall Stability, if required) of the project produced SMA mix used in the DCS and provide the results to the Engineer. The Contractor may proceed with full production if all mixture properties are within the specified tolerances.

To determine the in-place density and roller pattern, one core shall be taken at three random locations within the last 200 tons of the DCS. The Engineer will determine the coring locations using a stratified random sampling process. The cores shall be immediately submitted to the Engineer and will be used for determining acceptance of the DCS. Densities of the random samples will be determined by cores according to CP 44.

Coring shall be performed by the contractor under the Authority’s observation. Coring will not be measured and paid for separately but shall be included in the work.

The DCS will be designated as a separate process. Payment for the DCS will be made in accordance with Subsection 105.05, Conformity to the Contract of Hot Mix Asphalt.

PS-16

REVISION OF SECTION 403

STONE MATRIX ASPHALT PAVEMENT

Subsection 403.04 shall include the following:

Stone Matrix Asphalt will be measured by the actual number of tons that are completed and accepted.

Subsection 403.05 shall include the following:

Stone Matrix Asphalt Ton

Mix design, furnishing, hauling, preparing, and placing all materials, including aggregates, asphalt cement, limestone dust, hydrated lime, and approved demonstration control strip; labor, equipment tools, setting of lines and guides where specified, and all other work necessary to complete the item will not be paid for separately but shall be included in the work.

PS-17

HOT MIX ASPHALT TICKET COLLECTION

Subsection 403.05 shall include the following:

The Contractor shall collect the scale ticket on each load when it is delivered to the project site, and ensure that the information required in subsection 109.01 is shown on each ticket. The Contractor’s ticket collector shall add the placement location to each scale ticket using stationing or mileposts and sign it.

The scale tickets shall be available on site for CDOT personnel to inspect.

Each day the Contractor shall provide to the Engineer envelopes which contain the previous day’s signed tickets and the following:

1. On each envelope: Project number, date of paving, type of material, daily total and cumulative total.

2. One of the following:

A. Two adding machine tape tabulations of the weight tickets with corresponding totals run and signed by different persons, B. One signed adding machine tape tabulation of the weight tickets that has been checked and signed by a second person, C. Signed check tape of computer scale tickets that have a cumulative total. These scale tickets must be consecutive and without voids adjustments.

3. A listing of any overweight loads on the envelope, including ticket numbers and amount over legal limit.

4. A comparison of the actual yield for each day’s placement to the theoretical yield. Theoretical yield shall be based on the actual area paved, the planned thickness, and the actual density of the mixture being placed. Any variance greater than +2.5% shall be indicated on the envelope and a written explanation included.

The Contractor shall provide a vehicle identification sheet that contains the following information for each vehicle:

(1) Vehicle number

(2) Length

(3) Tare weight

(4) Number of axles

(5) Distance between extreme axles

(6) All other information required to determine legal weight.

(7) Legal weight limit.

PS-18

REVISION OF SECTION 407

TACK COAT

Section 407 of the Standard Specifications is hereby revised for this project as follows:

Subsection 407.07 is hereby revised to include the following:

A tack coat of emulsified asphalt diluted 1:1 conforming to CSS-1H shall be applied below the bottom lift, between lifts, and to the edges of existing pavements adjacent to new pavements at a rate of 0.10 gallons per square yard prior to placement of hot bituminous pavement. Likewise, for overlay of existing pavement, HBP or PCC, a tack coat shall be applied as specified above prior to paving.

Subsection 407.09 is hereby revised to include the following:

Tack coat shall not be paid for separately, but shall be paid for under, and considered subsidiary to, both the HMA and SMA pay items

The cost of street sweeping and other means of removing unwanted material and providing a clean surface is the Contractor’s responsibility and shall not be measured and paid for separately, but shall be included in the work for Item 403, Hot Bituminous Pavement.

PS-19

REVISION OF SECTION 627

MODIFIED EPOXY PAVEMENT MARKING (INLAID)

Section 627 of the Standard Specifications is hereby revised for this project as follows:

In Subsection 627.03 add the following:

Existing pavement surface shall be recessed prior to application of new epoxy pavement marking material.

Pavement shall be recessed using a grinding machine capable of providing a 50 mils deep recess at a width equal to the width of pavement marking plus minimum 2” (1” each side).

Substrate shall be thoroughly cleaned prior to application of the new epoxy pavement marking material.

In Subsection 627.13 add the following:

Recess for Pavement Marking shall not be paid separately but shall be included in the cost of the Modified Epoxy Pavement Marking (Inlaid) item

Add the following to the Tabulation of Pay Items:

Modified Epoxy Pavement Marking (Inlaid) Gallon

PS-20

REVISION OF SECTION 627

TEMPORARY PAVEMENT MARKING

Section 627 of the Standard Specifications is hereby revised for this project as follows:

In Subsection 627.13 delete the third paragraph after the Pay Item table and replace with the following:

Temporary pavement marking applied and removed for interim phasing during construction will not be measured and paid for separately, but shall be included in the work.

Each authorized application of temporary pavement marking will not be measured or paid separately, but shall be included in the lump sum cost for Construction Zone Traffic Control.

PS-21

REVISION OF SECTIONS 627 AND 708

PAVEMENT MARKING WITH WATERBORNE PAINT

AND LOW VOC SOLVENT BASE PAINT

Sections 627 and 708 of the Standard Specifications are hereby revised for this project as follows:

In subsection 627.04 delete the table and replace it with the following

Description Paint Water-Based Low VOC High Build

Alignment Lateral Deviation 2.0 inch per 200 foot Max Coverage Rate Sq. Ft. per Gallon 100-110 100-110 70-85 Thickness Mil 15-17 15-17 20-25 Width Inches Per Plans +/- 0.25 Dry Time Minutes 5-10 5-10 5-10 Beads Application Rate, lbs/gal 6-8 8-10

Subsection 708.05 shall include the following:

High Build Acrylic Waterborne Paint. High build acrylic waterborne paint binder (nonvolatile portion of vehicle) shall be 100 percent acrylic cross linking polymer, by weight, as determined by infrared analysis or other chemical analysis available to the Authority.

PS-22

REVISION OF SECTION 630

CONSTRUCTION ZONE TRAFFIC CONTROL

Section 630 of the Standard Specifications is hereby revised for this project as follows:

In subsection 630.02, add the following:

Reflectivity of all temporary and permanent signage shall be fabricated with 3M Diamond Grade Fluorescent Orange Work Zone Sheeting Series 3924 or approved equal. Any traffic control device that is damaged, weathered, bent or otherwise deemed unsuitable by the Authority shall be replaced immediately. Any traffic control device that has messaging or reflectivity impaired by road dirt or splash-back shall be cleaned or replaced within 24 hours of identification or notification of such condition.

A. Physical Quality of Signs:

1. No peeling or damaged sheeting.

2. No bent edges.

3. Sign faces free from scratches.

4. No buckled (bowed) signs.

5. Signs shall be cleaned every 2 weeks and after every snow event.

6. Signs must be visible day or night to the average driver.

In subsection 630.10, delete the first paragraph and replace with the following:

The Contractor shall provide a Traffic Control Plan (TCP) for the written approval of the Engineer. The Traffic Control Plan shall be submitted a minimum of 72 hours prior to desired implementation and must be approved by the Engineer prior to implementation. To implement the TCP, the Contractor shall develop and submit a method for handling traffic (MHT) for each different phase of construction that shows the Contractor’s proposed construction phasing and proposed traffic control devices consistent with the TCP. If at any time the Contractor desires to change the MHT, it shall be considered a different phase requiring a new MHT. Each MHT shall be approved by the Engineer prior to deployment.

In subsection 630.10(a), delete the second paragraph.

In subsection 630.10, add the following:

The components of the Traffic Control Plan (TCP) for this project are included in the following:

1. Standard Plan S-630-1, Traffic Controls for Highway Construction

2. Standard Plan S-630-2, Barricades, Drums, Concrete Barrier (temp.), and Vertical Panels

3. Standard Plan S-630-3, Flashing Beacon (Portable) Details

4. MUTCD, current edition

5. E-470 General Provision 104.04 Maintaining Traffic

The road and the intersections of the access points shall be maintained in a manner that will safely and adequately accommodate traffic. Snow removal will not be required of the Contractor. Any impact to traffic control devices due to snow removal operations shall be the responsibility of the Contractor to correct.

The Contractor shall not store, stage, nor unload equipment or materials except in areas designated by the Engineer. Equipment and materials may not be unloaded and left within the clear zone in areas not under active lane closures or traffic controls unless otherwise protected by temporary or permanent barrier or guard rail; and only with the approval of the Engineer

Specific Traffic Control Plan requirements for this project are as follows:

1. The Contractor shall not allow any type of vehicular, construction, or pedestrian traffic to cross the E-470 median under any circumstances. Violators will be responsible for the costs of all necessary repairs of any damage caused and subject to tickets and fines.

The Contractor shall limit the length of lane closures and shoulder closures to a maximum length of 3 miles measured from the start of the lane closure taper. Speed limit within lane closures shall be reduced to 55 mph.

PS-23

REVISION OF SECTION 630

CONSTRUCTION ZONE TRAFFIC CONTROL

2. Prior to starting construction, the Contractor shall notify the Engineer of the date the Contractor intends to start construction. The Contractor shall cooperate fully with the Engineer in the handling of traffic. All traffic control activities shall be subject to the approval of the Authority.

3. Any signs damaged due to Contractor operations shall be replaced in kind or repaired by the Contractor at no cost to the Owner as described in Subsection 107.15 Responsibility for Damage Claim. A video inventory of the Project site and adjacent areas including existing signs shall be made by the Contractor prior to starting work. A copy of this video, in digital format, shall be provided to the Authority at no additional cost prior to starting work.

4. All Flagging stations used at night shall be adequately illuminated in accordance with the MUTCD.

Adequate illumination of flagging stations will include the use of light plants whenever other sources of adequate lighting are not available. Illumination shall be placed so it does not create a disabling glare for drivers.

5. All lane closures shall be subject to the approval of the Authority. Requests for each lane closure shall be made at least24 hours in advance of the time the lane closure is to be implemented. Lane closures will not be allowed to remain unless being utilized in continuum for the duration of each working period. The Authority reserves the right to disallow any lane closures.

6. For each lane closure, the Contactor shall provide a portable radar speed sign at the start of the speed zone. The sign shall indicate the speed of approaching vehicles next to the speed limit sign and the actual speed detected will flash when speeds are in excess of the posted speed limit. The sign shall be sized to suit the speed of traffic.

7. E-470 Working Time Restrictions. The Authority prohibits the presence of temporary traffic control devices or performance of any work, which may impact traffic during certain designated hours. The Authority has designated the following hours, during which traffic control and work restrictions are imposed for this project:

Roadway Restricted Hours E-470 Mainline No Lane Closures 6am-7pm, 7 days a week

Other Times/Days As approved by the Authority

During the work restricted hours, in addition to having no lane closures, the Contractor shall not use any portion of the highway in a manner which interferes with the free and safe flow of traffic, unless otherwise approved in advance by the Authority Project Manager. This restriction includes, but is not limited to, the prohibition of the exit and entry of trucks from the highway to access the work areas to deliver equipment or materials without the use of lane closures. The Authority reserves the right to change the hours of restriction.

8. No work shall be done on the day of, or on the day before, the Labor Day, 4th of July, Memorial Day, Thanksgiving, Christmas or New Year’s Holidays.

9. The Contractor shall maintain E-470 in a safe condition, including all connecting ramps and temporary construction approaches.

10. The project access points shall be maintained in a manner that will safely and adequately accommodate traffic.

PS-24

REVISION OF SECTION 630

CONSTRUCTION ZONE TRAFFIC CONTROL

11. The Contractor and his subcontractors shall equip their construction vehicles with flashing amber lights.

Flashing amber lights on vehicles shall be visible from all directions. Parking of personal vehicles within the Right-of-Way is prohibited.

12. Traffic control devices stored on the shoulders or slopes of any roadway shall be turned down and placed a minimum distance from the traveled lane of 30 feet on Mainline E-470 Roadways and 15 feet on other roadways with a speed limit of less than 40 mph. In all cases, detour signs and other detour appurtenances not in active use shall be removed from the traveled way a sufficient distance to allow for the safe operation of passing vehicles. Traffic control devices shall not be stored in any landscaped area.

13. The traffic control supervisor shall have a cell phone, available at all times work is being performed, capable of transmitting and receiving communications from all areas of the project.

14. After placement of any traffic control, any unsafe conditions in the opinion of the Engineer will be corrected or adjusted as necessary by the Contractor.

15. Construction traffic control signs shall be placed on both sides of the highway.

16. Traffic cones shall be 36” high. Traffic barrels or vertical panels shall be used as the channelizing device located within the entire length of lane closure tapers to provide additional traffic control visibility.

17. A Size C flashing arrow board shall be used for mainline E470 lane closures. Size B flashing arrow boards shall be used if needed for lane closures along other roadways within the project area.

18. Temporary pavement marking for interim conditions during construction shall be incidental to the Construction Zone Traffic Control pay item.

19. Temporary impact attenuation shall be provided for all roadside hazards that must remain within the clear zone for any period of time. The application of end treatments and crash cushions shall comply with the latest CDOT Crash Cushion, End Treatment and Barrier Application Chart.

20. Should the Contractor be required to mask existing sign legends to cover conflicting traffic instructions or information during a given phase, such work shall not be measured and paid separately but will be considered included in the lump sum cost for temporary control devices.

In subsection 630.16 delete the pay item tabulation and replace with the following:

Payment will be made under:

Pay Item Pay Unit Construction Zone Traffic Control Lump Sum Portable Variable Message Board Sign Each Project Information Sign Each Uniformed Traffic Control Hour

All other traffic control related items not listed above, including temporary pavement marking, construction traffic control signs, mobile attenuators, flagging, traffic control inspection, traffic control management, barricades, cones, drums, arrow panels, flashing beacons, portable radar speed signs, and night work lighting will not be paid for separately but shall be included in the work and subsidiary to the Construction Zone Traffic Control lump sum.

PS-25

REVISION OF SECTION 630

PROJECT INFORMATION SIGN

Section 630 of the Standard Specifications is hereby revised for this project as follows:

Subsection 630.02 shall include the following:

Project Information Signs:

The Contractor shall provide the specified number of Project Information Signs, at locations to be approved by the Authority, with the following layout and information:

1. E-470 logo in the top right corner.

2. Contractor logo in top left corner.

3. Line 1: Project Name.

4. Line 2: Month – Year to Month – Year.

5. Contractors 24 hour contact phone number.

6. 8’ X 6’ Construction Orange with black lettering.

7. 2 – 6” X 6” timber breakaway posts.

8. Backing zees as needed per CDOT M&S standards for this size of sign.

Subsection 630.17 shall include the following:

Project Information Sign will be measured by the number of signs installed within 30 days of the Notice To Proceed and shall include all posts, backing zees, sign materials as well as complete installation, maintenance and removal at Substantial Completion or as directed by the Authority. Late installations will be price-reduced on a pro-rated basis for an 18 month construction period.

Subsection 630.18 shall include the following:

Project Information Sign Each

8’

6’

Contractor Logo

E-470 Logo

Project Name

Month/Year to Month/Year

Contractor 24 Hour Contact Phone

PS-26

ADDITION OF SECTION 633

E-470 TOLL ALLOWANCE

Section 633 of the Standard Specifications is hereby added for this project to include the following:

DESCRIPTION

633.01 This work for the payment of tolls necessary to provide access to the project for employees, subcontractors, material suppliers and all other access requirements necessary for the Contractor to complete the work.

METHOD OF MEASUREMENT

633.02 Tolls will not be measured.

BASIS OF PAYMENT

633.03 The accepted quantities will be paid for at the contract unit price per unit of measurement for the pay items listed below:

Payment will be made under:

E-470 Toll Allowance Lump Sum

Payment of Tolls will be paid for by prorating the Lump Sum price into monthly payments based on the length of the Contract. Payment of the Lump Sum item will be full compensation for costs incurred by the Contractor to access the project site.

PS-27

REVISION OF SECTION 702

HOT POURED JOINT AND CRACK SEALANT

Section 702 of the Standard Specifications is hereby revised for this project as follows:

In subsection 702.06, first paragraph, delete the first sentence and replace with the following:

Hot poured material for filling joints and cracks shall conform to the requirements of ASTM D 6690, Type II or Type IV.