Attachment_4_-_Paving_Special_Contract_Requirements_-_Updated_7_14_2022.pdf

Section 102. - BID, A WARD, AND EXECUTION OF CONTRACT

Exclude the entire Section 102 from the FP-14. The information regarding the bid, award, and execution of contract will be provided in a separate document with the contract package.

Section 104. - CONTROL OF WORK

104.05. Add the following:

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When hauling on National Park Service roads, do not exceed the load restrictions shown in Table 104-1.

Sin2Ie Units

2 axles

3 axles

4 or more axles

Combination Units

3 axles

4 axles

5 or more axles

Table 104-1

Load Restrictions

Gross Vehicle Wei2ht (pounds)

40,000

48,000

52,000

Gross Vehicle Weight (pounds)

57,000

62,000

66,000

The Contracting Officer (CO) may further load restriction or suspend hauling.

Operate loaded vehicles hauling material at speeds not exceeding 40 miles per hour or the posted speed limit, whichever is lower, and spaced at 500-foot minimum intervals. When hauling on bridges, do not exceed 25 miles per hour or the posted speed limit, whichever is lower, or operate more than 1 loaded hauling vehicle at a time.

Hauling will only be permitted from the nearest point of public access to the work site.

104.05. Add the following:

The Contractor is responsible for any damages caused by the construction activities to any existing feature, as determined by the CO. The Contractor must repair the damages to its original conditions within a timeframe established by the CO.

Section 107. -LEGAL RELATIONS AND RESPONSIBILITY TO THE PUBLIC

107.02. Add the following to the sixth paragraph:

Locate utilities according to Section 645.

Section 108. -PROSECUTION AND PROGRESS

108.01. Add the following:

Construction operations are limited as follows:

(a) No work will be permitted on National legal holidays as noted in Section C.5 of the Base Contract.

(b) No work will be permitted on days with special events occurring in the vicinity, as determined by the CO, of the project site.

Section 109. -MEASUREMENT AND PAYMENT

109.08(c). Add the following:

Submit invoices through DOI bureaus bill Invoice Processing Platform (https:/ /www .ipp.govD.

Section 153. -CONTRACTOR QUALITY CONTROL

153.03. Add the following:

Submit a Quality Control Plan to the Contracting Officer Representative (COR) for approval 30 days prior to initiating any pavement and/or guardrail construction activity.

Section 154. -CONTRACTOR SAMPLING AND TESTING

154.02. Add the following:

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

154.03. Add the following:

Deliver the Government's portion of the sample or split sample in an acceptable container suitable for shipment to the COR. For constructed asphalt concrete pavement material samples, provide 5-gallon metal buckets with lids. As an alternative, provide boxes that are coated with silicone-coated paper throughout the interior.

154.05. Add the following:

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For items accepted under Subsection 106.05, submit a copy of all current test results, and pay factor calculations based on those tests on a weekly basis to the COR. When large quantities are produced, calculate pay factors as soon as possible. Use this information to make any necessary adjustments to operations to achieve acceptable pay factors. The Government may use the Contractor's test results to determine final pay factors for acceptance.

Section 156. - PUBLIC TRAFFIC

156.04. Add the following:

Prior to beginning work, submit a milestone schedule that identifies any major closures, detours, or significant traffic impacts. After the start of work, submit a weekly two-week look-ahead schedule of planned activities including road and lane closure request(s). For any road, lane, shoulder, or sidewalk closures, submit a closure request form showing the following information:

• Date of request;

• Dates, times, and location of the work to be performed;

• Brief description of the work to be performed;

• Existing number of lanes and shoulders to be closed;

• Sidewalk and trail closures and detours;

• Field point of contact name and cell phone number;

• Traffic Control Plan and typical applications, including detours if any; and

• Enforcement request, if any. Provide advance notification for the type of closure requested as shown in Table 156-1.

Table 156-1

Advance Notification Re uirements

Lane Closure Type

Any road closure or a lane closure resulting in a significant impact on the flow of traffic, such as stopping traffic completely, closing two or more lanes, closing an exit or entrance ramp at freeway interchanges during peak hours, or a major change of traffic patterns. This type of closure may require extensive media and stakeholder notification efforts and coordination amon various local and state a encies.

A lane or ramp closure resulting in minor or no impact on the flow of traffic, such as closin one lane on a four- lane freewa durin off- eak

Minimum

Advance Notice

Re

J-5 traffic hours.

A closure that would close a shoulder (right or left) on a freeway or ramp. 7 Pedestrian/bicycle detour < 0.1 mile 7 Pedestrian/bicycle detour> 0.1 mile 30

Work may be performed simultaneously on more than one site. Adjust the traffic layouts as necessary to coordinate traffic control operations between sites. Only one single lane closure in each direction of travel will be permitted at one time. The maximum length of a single lane closure will be one mile. Do not close any roads without prior approval from the COR and/or CO.

The Contractor shall submit a completed "Traffic Control Permit Application" form to the applicable State Department of Transportation (DOT) at least 14 days before placing the Portable Changeable Message Signs (PCMS) within State DOT right-of-way.

156.05(f). Add the following:

Maintain the stormwater drains and inlets fully functional within the project limits throughout the duration of the project.

156.07(d). Add the following:

The Contractor may the staging area as shown on the contract plans. Obtain approval from the COR and/or CO before using the staging area. Restore the staging areas to its original condition as directed by the COR and/or CO.

156.07(i). Delete the Subsection and substitute the following:

(i) Limit construction-caused delays to public traffic to a maximum of 15 minutes per passage through the project; and

156.08. Add the following:

Contractor must complete Schedule A-F during day-shifts only. Night-work may be authorized as needed, but most be coordinated at least five (5) days in-advance of the need with the COR. All coordination must be in writing (email format acceptable), and contractor is responsible for ensuring proper pay rates are applied for night-work as required by the Department of Labor.

156.09. Add the following:

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Provide a full-time traffic control supervisor exclusively for the project. Ensure the traffic control supervisor is always on the site when work is being performed and available during non-work periods.

Section 157. - SOIL EROSION AND SEDIMENT CONTROL

157.01. Add the following:

This work includes updating and maintaining a SWPPP.

157.04. Add the following:

Update the Government-provided draft SWPPP in accordance with the EPA and State requirements using the information provided in the plans, specifications, and permits obtained for the project. Submit an electronic copy of the SWPPP to the COR and/or CO at least 7 days before the pre-construction conference in accordance with Subsection

104.03 for approval. Update the SWPPP constantly throughout the project as work is performed and when changes are made to the project.

Maintain a copy of the current SWPPP on-site at all times.

157.16. Add the following:

The SWPPP will be evaluated under Subsection 106.02. The SWPPP will be jointly reviewed for accuracy and completeness by the COR and/or CO and the Contractor before the submission of each monthly invoice. If the review finds that the SWPPP is not in compliance, payment of the Contractor's invoice will be withheld until the SWPPP is brought up to date as outlined in Subsection 109.0S(a).

157.18. Add the following:

Replace (a) and (b) with the following:

Progress payments for updating and maintaining a SWPPP will be paid as follows:

(a) 25 percent of the pay item amount will be paid upon acceptance of the SWPPP.

(b) An additional 50 percent of the pay item amount will be prorated based on total work complete.

Section 203. - REMOVAL OF STRUCTURES AND OBSTRUCTIONS

203.04(c). Add the following after the second sentence of the first paragraph:

On structures, use power-driven hand tools and other hand tools in accordance with Subsection 203.04(e).

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404.04 Additional JMF Requirements.

(a) Submission. See Subsection 401.03(c).

(b) Verification. Allow a minimum of 21 days for verification of each JMF after receipt of all material and information at George Washington Memorial Parkway. The verification process starts when required documentation and material are received. When the JMF is verified, begin asphalt concrete mix production for the control strip.

(1) Aggregate gradations. The Contractor's aggregate gradation is verified if the COR and/or CO's gradation on a combined asphalt concrete mix using the Contractor's aggregate and RAP stockpile percentage recommendations is within the Contractor's target value gradation plus or minus the tolerance for each sieve listed in Table 404-2.

Table 404-2 Aggregate Gradation

Verification Tolerances

Sieve Size Tolerance, %

No. 4 (4.75 mm) ±3.0

No. 8 (2.36 mm) ±3.0

No. 16 (1.18 mm) ±2.0

No. 30 (600 µm) ±2.0

No. 50 (300 µm) ±2.0

No. 200 (75 µm) ±1.0

Other sieves ±3.0

(2) RAP asphalt binder content and gradation. The Contractor's RAP asphalt binder content results are verified if the COR and/or CO's result for each stockpile is within ±0.75 percent by total mass using AASHTO T 308. Submit the RAP dry gradation, burned gradation, asphalt content, and specific gravity information as shown on the RAP data sheet of FHW A Form 1641.

(3) Theoretical maximum specific gravity of mixture (Gmm). The Contractor's Gmm is verified if the COR and/or CO's result is within 0.024 for AASHTO T 209.

(4) Bulk specific gravity of compacted mixture (Gmb). The Contractor's Gmb is verified if the COR and/or CO's result is within 0.044 for AASHTO T 166.

(5) Bulk specific gravity of aggregate (Gsb). The Contractor's individual and coarse and fine Gsb values are verified if the COR and/or CO's results are within 0.038 for the individual and combined AASHTO T 85 and AASHTO T 84 values.

(6) Voids in the mineral aggregate (VMA). The Contractor's VMA result is verified if the COR and/or CO's result is 0.5 percent above the minimum specification limit in Table 404-1 for the selected mix design procedure.

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(7) Voids filled with asphalt (VF A). The Contractor's VF A result is verified if the COR and/or CO's result is within the specification limits in Table 404-1 for the selected mix design procedure.

(8) Air voids (Va). The Contractor's Va result is verified if the COR and/or CO's result at the same design asphalt binder content is within ± 1 percent of the target value in Table 404-1 for the selected mix design procedure.

(9) Tensile strength ratio (TSR). The Contractor's TSR result is verified if the COR and/or CO's result is above the minimum specification limit in Table 404-1 for the selected mix design procedure.

(10) Stability (Marshall mix design method only). The Contractor's stability result is verified if the COR and/or CO's result is above the minimum specification limit in Table 404-1 for the selected mix design procedure.

(11) Flow (Marshall mix design method only). The Contractor's flow result is verified if the COR and/or CO's result is within the specification limits in Table 404-1 for the selected mix design procedure.

( c) Changes and resubmissions. If a JMF is rejected or the source of material is changed, submit a new JMF for verification. Up to 30 days may be required to evaluate a change after receipt of required documentation and material. Approved changes in target values will not be applied retroactively for payment.

The CO will deduct JMF evaluation costs resulting from the following:

(1) Contractor-requested changes to the approved JMF;

(2) Contractor requests for more than one JMF evaluation; and

(3) Additional testing necessary due to the failure of a submitted JMF.

404.05 Mixing Plant. See Subsection 401.04.

404.06 Equipment. See Subsection 401.05.

404.07 Surface Preparation. See Subsection 401.06.

404.08 Weather Limitations. Place asphalt concrete mix on a dry, unfrozen surface when the air temperature in the shade is above 60 °F (15.6 °C) and rising. For HMA, conform to Table 404-3.

J-13 procedures intended for the entire mix. Cease production after construction of the control strip until the asphalt concrete mix and the control strip are evaluated for acceptance.

(1) Mixture. Take and test at least three control strip asphalt concrete mix samples from the paver hopper and evaluate according to Subsection 404.18.

For asphalt concrete pavement mixtures designed using the following:

(a) Gyratory mix design method (AASHTO M 323, AASHTO R 35, and AASHTO T 312). The asphalt concrete mix is acceptable if all test results are within specification limits for asphalt content and VMA, and the calculated pay factor for asphalt content, VMA, and gradation is 0.90 or greater.

(b) Marshall mix design method (AASHTO T 245). The asphalt concrete mix is acceptable if all test results are within specification limits for asphalt content and gradation, and the calculated pay factor for asphalt content and gradation is 0.90 or greater.

(2) Compaction. Compact according to Subsection 404.15.

Provide documentation of passes for each roller used in the control strip. Identify breakdown, intermediate, and finish rollers in the documentation. Document if roller was operated in vibratory or static mode. Provide frequency and amplitude settings if operated in vibratory mode. Furnish this documentation to the CO after completion of the control strip.

Provide thin-lift nuclear density gauges calibrated according to the ASTM D2950 calibration section and within 6 months before use. Check the standard and reference on each day of use according to the ASTM D2950 standardization and reference check sections.

Take nuclear gauge density readings behind each roller pass to determine the roller pattern necessary to achieve required density. Provide documentation of passes for each roller used in the control strip. Identify breakdown and finish roller in the documentation. Furnish this documentation to the COR and/or CO after completion of the control strip.

Take nuclear gauge density readings at 10 randomly selected locations as directed by the COR and/or CO. Cut and test 5 core samples at randomly selected locations as directed by the COR and/or CO and according to Table 404-4 to verify nuclear density gauge readings. A correction factor will be applied to control strip and production density results according to Table 404-4, Footnote (2), if applicable. Furnish the COR and CO with documented nuclear gauge readings correlated to core densities. Density is acceptable if all test results exceed the minimum specification limit and the nuclear gauge density pay factor of the 10 randomly selected locations is 0.90 or greater.

Section 412. -ASPHALT TACK COAT

412.01. Delete the section and substitute the following:

This work consists of applying a non-tracking hot applied polymer asphalt tack coat.

412.02. Add the following:

Non-tracking hot applied polymer asphalt tack coat

412.0S(b). Delete the Subsection and substitute the following:

702.07

(b) Ambient air and pavement temperatures are above 60 °F and rising; and

412.06. Delete the second paragraph and substitute the following:

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Apply the asphalt tack coat according to Subsection 407.09 and at a rate indicated in Table 412-1 or as recommended by the manufacturer and approved by the COR and/or CO.

Provide the CO with the target residual and bar application rates within the range specified in Table 412-1. Control the rate of application within plus or minus 0.01 gallons per square yard of the target application rate and within the allowable range. Provide the COR and/or CO with the specific gravity of the bituminous material corrected for spray temperature.

Set spray bar height to ensure uniform coverage and at least a double overlap, but not to exceed triple overlap coverage. Set nozzle angle settings between 15 to 30 degrees from the center of the spray bar axis. Use the same size nozzles, all set at the same angle, open, and functioning properly.

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Table 412-1 sp a ac oa ,pp 1ca on ae A h It T k c t A r ti R t <1>

Bar Rate Bar Rate Residual Bar Rate

Pavement Type Rate<2> PG Binder<3>

Undiluted Diluted Emulsion<S)

Emulsion<4>

New Asphalt

0.020 - 0.045 0.025 - 0.045 0.030 - 0.065

Concrete Pavement

Existing Asphalt

0.040 - 0.070 0.040 - 0.060 0.060 - 0.105

Concrete Pavement

Milled Asphalt

0.040 - 0.080 0.040 - 0.080 0.060 - 0.120

Concrete Pavement

Portland Cement

0.030 - 0.050 0.030 - 0.050 0.045 - 0.075

Concrete Pavement

(1) Application rates are in gallons/yd2

(2) Residual asphalt: the remaining asphalt after an emulsion has completely cured or set.

(3) Maintain a PG binder application rate of 1.0 times the target residual tack coat rate.

(4) Maintain an undiluted application rate of 1.5 times the target residual tack coat rate.

(5) Maintain a diluted application rate of3.0 times the target residual tack coat rate.

412.08. Delete the second paragraph and substitute the following:

(1:1 Ratio)

0.060 - 0.130

0.120 - 0.210

0.120 - 0.240

0.090 - 0.150

Do not measure asphalt tack coat or non-tracking hot applied polymer asphalt tack for payment.

Section 413. -ASPHALT PAVEMENT M ILLING

413.05. Add the following:

Measure transitional milling required for pavement preservation treatment work under Section 420.

Section 414. -ASPHALT PAVEMENT CRACK SEALING AND FILLING

414.04. Add the following:

Do not rout cracks unless directed by the CO.

414.06. Add the following:

Do not seal or fill cracks less than ½-inch wide.

414.06(a). Add the following:

Do not begin sealing cracks until the material has been approved for use by the COR and/or CO. Seal each crack with an approved crack sealant conforming to Subsection 712.0l(a)(l).

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414.06(b). Delete the first sentence and substitute the following:

Do not begin filling cracks until the material has been approved for use by the COR and/or CO. Fill each crack with an approved polymer modified mastic asphalt conforming to Subsection 712.0l(a)(2).

Add the following after Section 418:

Section 420. - PAVEMENT PRESERVATION TREATMENT

Description

420.01 This work consists of applying a single course of pavement preservation treatment.

Pavement preservation treatment type is designed according to Subsection 420.04.

Asphalt binder is designated according to AASHTO M 320.

Material

420.02 Conform to the following Subsections:

Antistrip additive Asphalt binder Asphalt concrete aggregate

Construction Requirements

702.05 702.01 703.07

420.03 General. Perform pavement preservation treatment type as shown in the plans to complete the work.

Do not apply pavement preservation treatment to bridge joints, concrete surface bridge decks, inside tunnels, or within 100 feet of tunnel entrances.

Remove existing pavement markings at locations as directed by the CO, using sandblasting, micromilling, or other methods that will not damage the surface or texture of the pavement.

Submit removal method to the CO for approval.

420.04 Composition of Mix (Job-Mix Formula). Provide asphalt concrete mixes of aggregate, asphalt binder, and additives that meet the applicable material requirements and are capable of being placed and compacted as specified for the type of pavement preservation treatment shown in the plans.

For Type II pavement preservation treatment, provide a No. 4 (4.75mm) nominal maximum size

J-28 aggregate asphalt concrete mix in accordance with Section 404. Provide a tack coat with a residual application rate conforming to Table 412-1 for existing asphalt concrete pavements or as recommended by the manufacturer and approved by the COR and/or CO.

420.05 Placement. Place the pavement preservation treatment, Type II in accordance with the following:

(a) Apply a non-tracking hot applied polymer asphalt tack coat material before placing the asphalt mix with a standard paver. Furnish and place non-tracking hot applied polymer asphalt tack coat according to Section 412.

(b) Place the thin lift asphalt concrete mix at a depth of 3/4 inches and in accordance with Section 404. Apply an asphalt tack coat in accordance with Section 412 and at a residual application rate conforming to Table 412-1 for existing asphalt concrete pavements.

420.06 Acceptance. See sampling, testing, and acceptance requirement tables at the end of each applicable Section for the pavement preservation treatment applied.

Removal of pavement markings will be evaluated under Section 203.

Thin lift asphalt concrete pavement will be evaluated under Section 404.

Asphalt tack coat will be evaluated under Section 412.

Asphalt pavement milling will be evaluated under Section 413.

Measurement

420.07 Measure the Section 420 pay items listed in the bid schedule according to Subsection 109.02.

Measure the removal of pavement markings under Section 203.

Payment

420.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 420 pay items listed in the bid schedule, except the pavement preservation treatment contract price will be adjusted as shown below. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

The contract price for Type II will be adjusted according to Subsection 404.20.

Section 625. - TURF ESTABLISHME NT

625.04. Add the following to the second paragraph:

Apply agricultural limestone (85 percent CaCO3) at the rate of 3,100 pounds per acre.

625.06. Add the following:

Apply fertilizer at a rate of 700 pounds per acre for both methods.

625.07. Add the following:

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Apply seed at the rates shown in Table 625-1 for both methods from April 15 to May 31, and September 15 to October 31.

Table 625-1

C fS dM ompos1tion o ee IX

Rate

Botanic Name Common Name (pounds per acre of pure live seed)

Lolium arundinaceum Tall Fescue 247

Poa pratensis Kentucky Bluegrass 13

TOTAL

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

Use straw mulch. Apply mulch the same day as seeding by the following methods:

625.08(a). Delete the second sentence and substitute the following:

Apply straw mulch uniformly at a rate of 5,500 pounds per acre (min I-inch mat).

625.08(b). Add the following:

Apply straw mulch uniformly at a rate of 5,500 pounds per acre (min I-inch mat).

Section 635. - TEMPORARY TRAFFIC CONTROL

635.04. Add the following:

Submit a Traffic Control Plan to the COR and/or CO for approval 30 days prior to begin any construction activity.

Use a single lane closure layout to set up a work zone for this project according to the MUTCD and as shown in the contract plans.

Provide and install two portable changeable message signs (PCMS) as part of your Traffic Control Plan.

635.04(g). Add the following:

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The CO will provide a written notification of "marginal" or "unacceptable" traffic control devices that are not in compliance with this contract. If the Contractor fails to bring the "marginal" or "unacceptable" devices into compliance within a 24-hour period, the CO has right to suspend the work in whole or in part according to Subsection 108.05 if necessary.

If work is suspended in whole or in part because of the Contractor's failure to correct within 24-hours the Government shall not be responsible for any demobilization and/or remobilization costs. Additionally if work is suspended in whole or in part, it will be reported on contractors performance evaluation.

635.04(i). Add the following:

Submit a certification indicating that the devices are crashworthy as defined in Subsection 101.04.

635.07. Add the following:

Furnish 16-inch (minimum) square flags that are fluorescent orange or fluorescent red orange in color. Mount flags on top of signs in accordance with the MUTCD.

635.11. Add the following after the first sentence of the first paragraph:

Use FHW A-approved temporary barriers meeting test level 2 (TL-2) criteria, according to industry crashworthiness standards. For a list of acceptable manufacturers and products, refer to the FHW A longitudinal barriers listing found at https:/ /safety .fhwa.dot.gov /roadway dept/ countermeasures/reduce crash severity/listing.

cfm?code=workzone

Install temporary barriers according to manufacturer's recommendations.

635.18. Add the following:

Use FHWA-approved temporary crash cushions meeting test level 2 (TL-2) criteria, according to industry crashworthiness standards. For a list of acceptable manufacturers