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Department of Property & Procurement «=. EF Re 7 . . . Government of the United States Virgin Islands 3274 ESTATE RICHMOND, CHRISTIANSTED, U. S. VIRGIN ISLANDS 00820 Fy ae ig 8201 SUB BASE, SUITE 4, ST. THOMAS, U. S. VIRGIN ISLANDS 00802 a. & ST. CROIX MAIN OFFICE: 340.773.1561 | ST. THOMAS MAIN OFFICE: 340.774.0828 Xe So i ST. CROIX FAX: 340.773.0986 | ST. THOMAS FAX: 340.777.9587 — HTTP://DPPVI.GOV AMENDMENT ONE (1) February 20, 2018 TO: SUBJECT: IFBOOSDPWC18 (C) Melvin Evans Highway Pavement Rehabilitation and Safety Improvements from West Airport Intersection to Industrial Park Intersection, St. Croix. INSERT: New Bid Sheet & Pre Bid Minutes Response DELETE: Old Bid Sheet All other terms and conditions remain the same. A copy of this amendment must be returned with your bid. PRE-BID CONFERENCE February 8, 2018 10:00 AM VI-66(015) Melvin Evans Highway Pavement Rehabilitation and Safety Improvements Agenda Bid Opening Date: Contract Time: DBE Goal: Project Management & Inspection by: DBE Program Management: Funding: Office of Civil Rights: Discussion Items: Segment Number 4, St. Croix IFB-005 DPWC 18(C) At 10:00 am on February 21, 2018 165 Calendar Days (Contract Book, D-1) 19% DPW — Office of Highway Engineering John Paul David P.E, Construction Program Manager Bradford Marshall Jr, Project Engineer Frederick Mohammed Jr, Materials Control/Construction Inspector, Rishaun Burke, Construction Inspector Shelton Schulterbrandt, DBE Program Coordinator 100% Funded by Federal Highway Administration (GARVEE) Sharon Challenger-OJT Program Bidders attention is directed to the following Sections: General Provisions (F1-F48), Supplemental Specifications ($1 - $12), and Special Specifications (T1 — T20).- Paragraph 40 (C) of the General Provisions of the contract which references the 20% of the liquidated damages specified in the table above should be deleted. Paragraph 14 (a) page C-7 which reads “ In the event of tied bids....” Should be deleted. The successful bidder will be provided with a copy of the current Earth Change and Building Permits issued by Department of Planning and Natural Resources (DPN R). Utility Agreements have not been executed with utility companies as no utilities would be impacted by this project. Where pipe crossings or similar installations are being completed it would be necessary to coordinate with utilities to determine the depths and alignments of such installations in order to complete the necessary tasks.- Item 15201-Construction Survey and Stakeout- Bidders must pay attention to the full scope of this item as per FP-14 and as amended by the Special Specifications. Survey work must be undertaken by a professionally qualified land surveyor. In order to properly execute this project, it is necessary that the surveyor establish a centerline profile of the existing roadway as the basis of construction to establish horizontal! and vertical control for construction according to the typical cross section details. The Cross sections of the new asphalt surfaces are to be constructed as per the detail sheets and should effectively tie in to the existing drainage structures and cross pipes. Item 40301 - Hot Asphalt Concrete Pavement- Warm mix Asphalt should be used in all applications as part of the implementation of Every Day Count initiative (EDC). In addition, safety edge should be used on paving machines so as to bring out the desired effects. This is the second EDC initiative to be implemented in this project. A brochure on warm mix asphalt will be issued as an addendum to this meeting as ADDENDUM NUMBER 1. Further information can be obtained from the materials control manager Mr. Frederick Mohammed. Information on the application of safety edge may be obtained at https://www.youtube.com/watch ?v=wjqCLp_KqN8 A second brochure on the EDC initiative on application of safety edge will be issued as ADDENDUM NUMBER 2. Specifications for WMA will be issued as Addendum Number 3 Bidders must take note that item numbers 63501 and 63502 are to include traffic control according to MUTCD. These items are to take into account the need to regulate speed during construction to safety limits due to increased risk of plucking of aggregates and damage to windscreens. The use of Virgin Islands Police Department for traffic control must also be taken into account. Addendum number 4 is the amended bid schedule to address typographical errors in the original bid schedule. Utility Agreements have not been executed with utility companies as no utilities would be impacted by this Project. Where pipe crossings or similar installations are being completed it would be necessary to coordinate with utilities to determine the depths and alignments of such installations in order to complete the necessary tasks.- Item 15201-Construction Survey and Stakeout- Bidders must pay attention to the full scope of this item as per FP-14 and as amended by the Special Specifications. Survey work must be undertaken by a professionally qualified land surveyor. In order to properly execute this project, it is necessary that the Surveyor establish a centerline profile of the existing roadway as the basis of construction to establish horizontal and vertical control for construction according to the typical cross section details. The cross sections of the new asphalt surfaces are to be constructed as per the detail sheets and should effectively tie in to the existing drainage structures and cross pipes. Item 40301 - Hot Asphalt Concrete Pavement- Warm mix Asphalt should be used in all applications as part of the implementation of Every Day Count initiative (EDC). In addition, safety edge should be used on paving machines so as to bring out the desired effects. This is the second EDC initiative to be implemented in this project. A brochure on warm mix asphalt will be issued as an addendum to this meeting as ADDENDUM NUMBER 1. Further information can be obtained from the materials control manager Mr. Frederick Mohammed. Information on the application of safety edge may be obtained at https://www.youtube.com/watch?v=wjqCLp_KqN& A second brochure on the EDC initiative on application of safety edge will be issued as ADDENDUM NUMBER 2. Specifications for WMA will be issued as Addendum Number 3 Bidders must take note that item numbers 63501 and 63502 are to include traffic control according to MUTCD. These items are to take into account the need to regulate speed during construction to safety limits due to increased risk of plucking of aggregates and damage to windscreens. The use of Virgin Islands Police Department for traffic contro! must also be taken into account. Addendum number 4 is the amended bid schedule to address typographical errors in the original bid schedule. Discussion Items by Contracting Officer (Property and Procurement): The deadline for submission of queries on this IFB is the close of business on February 15, 2018. All queries should be addressed to: Dynell.williams@dpp.vi.gov Questions / Comments / Clarifications The meeting was adjourned until February 21, 2017 at 10:00 am. All other terms and conditions of this IFB remains the same. EDC-1: Warm Mix Asphalt | Federal Highway Administration Page 1 of 2 U.S. Department of Transportation hoo t Federal Highway Administration 1200 New Jersey Avenue, SE Washington, DC 20590 202-366-4000 Center for Accelerating Innovation Warm Mix Asphalt Warm Mix Asphalt (WMA) is the generic term for a variety of technologies that allow producers of Hot Mix Asphalt (HMA) pavement material to lower temperatures at which the material is mixed and placed on the road. It is a proven a technology that can; + Reduce paving costs. * Extend the paving season. * Improve asphalt compaction. « Allow asphalt mix to be hauled longer distances. * Improve working conditions by reducing exposure to fuel emissions, fumes, and odors, Lower temperatures, lower costs, more opportunities. WMA production methods use temperatures 30 to 120 degrees Fahrenheit lower than traditional hot-mix asphalt. Because less energy is needed to heat the asphalt mix, less fuel is needed to produce WMA. Fuel consumption during WMA manufacturing is typically reduced by 20percent. In paving projects, the greater the temperature difference between the asphalt mix and the outside temperature, the faster the mix cools, Since faster cooling effects durability, cold ambient temperatures adversely affect hot-mix asphalt. Relative to HMA, WMA cools more slowly allowing WMA to be successfully placed in lower temperatures. As a result, WMA extends the paving season. It also makes night paving more feasible. Additionally, WMA saves time in production as well as in surfacing roads. Because WMA makes compaction easier, cost savings are achieved by reducing time and labor spent compacting the mix. Lower temperatures also permit more asphalt mix to be hauled for longer distances, reducing transportation costs. How does it work? WMA technologies reduce the viscosity (the thickness) of the asphalt binder so that asphalt aggregates can be coated at lower temperatures. The key is the addition of additives (water-based. organic, chemical, or hybrids) to the asphalt mix. The additives allow the asphalt binders und asphalt aggregates to be mixed at the lower temperatures. Reducing the viscosity also makes the mixture easier to manipulate and compact at the lower temperature, Better performance Proper compaction is critical to well-performing pavements, One indication of proper compaction is density. Achieving proper density is important because most asphalt paved Federally-funded highways are accepted based on their density. WMA is a compaction tool that can help achieve proper density and improve pavement performance goals. WMA is also versatile. It has been used successfully in a range of pavement thicknesses. It is durable enough to withstand high traffic demands. WMA has been used in all types of asphalt concrete: dense-graded, stone matrix, porous, and mastic asphalt. Multiple WMA technologies are available. so the choice can be adapted to the temperatures and materials required. https://www.fhwa.dot.gov/innovation/everydaycounts/edc-1/wma.cfin 02/20/2018 Warm-mix asphalt has been used successfully in Europe for more than 10 years. In the United States, WMA projects are now in more than 40 States. Adal Good for workers, good for the environment. Working conditions are much healthier with WMA. Both at the production plant and on the construction site, workers inhale far less smoke and dust. This reduction is particularly important in tunnels. where ventilation is reduced. Comments from workers have been highly positive. According to Brad Neitzke, a Materials Engineer for the Federal Lands Highway, a Division of FHWA, "Certainly. warm-mix improved working conditions at the paving site. The crew's first reaction was to say, "There's no smoke!" WMA also produces fewer emissions. making it possible for paving to be done on some days when the air quality would typically put a halt to paving. A State transportation official recently attested that "On non-attainment days. when the air quality is bad, we often get shut down and are unable to pave. But with warm-mix [asphalt]. because the emissions are teduced, we might be able to pave even on days when the air quality is not the best.” Internationally recognized. WMA is clearly an important technology for the 21st century. The World of Asphalt's "People, Plants, and Paving Training Program" focused attention to WMA. with multiple sessions at its 2010 conference. At least 14 State Highway Agencies have adopted specifications to accommodate WMA. and more than 40 States have roads paved with WMA. This green technology is increasing the quality of our roads and our environment. Contact Matthew Corrigan FHWA Office of Infrastructure (202) 366-1549 tthew. igan@idot.pov Resources Brochure FAQs NCHRP Report 691: Mix Design Practices for WMA Warm Mix Asphalt: European Practice Articles Public Roads article (07 /0) Links Office of Infrastructure Warm Mix Asphalt Warm Mix Asphalt Page last modified on November 14, 2016 https://www.fhwa.dot.gov/innovation/everydaycounts/edc- 1/wma.cfm 02/20/2018 S)aulv It ug ean esd pp (abpq Ajayes ay) si yey 2 Pry uoljesisiulupy AemyBipy jaapay yuawjeal jj0-doig afpq yuawaneg y abpy Ajayes ayy FEO-OL VS-WMH4 Jaquinn uojed)igng "WuaLUUOI|AUA ay} Bul}23}0O1d pue ‘shempeo. Jno jo Ajajes ay) Busueyua ‘Auaayjap yafoid Buruayoys ye pawie uoneAouu! 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Sb WXEIT™ FIEKOV GO) i oes \ Vaal AOTC ASH qe a ANY TUST -CLE- OPE WD [TOU POY > sv LWT] esprupiary v7 ESA Ean e ome fal terme SIP ferED Me a Kr, | al ae tbYB 1S GbE | WG? THN OSMIV IIA OTHITI PEGA 7 ‘ON XVd 9 "TAL ssauddv TVW HINVN ANVdNOO/ ‘Ldaa AVN HONVONALLV KIOID IS (ETO)SIOOIA # PelorT SustTSAGIdUN AjayeS 3p MORE TTIGeYaY TsMISALY AEMUSIF] SUEAG WIATSWW (>) SLO MAGSOORAT l¥ch-02800 SANV'ISI NIDUIA 'S'N ‘XIOUD “LS ‘GHLSNVILSINHD CQNOWHDOI’I FLV.LSA PZ7e# INHW8YNOOUd AGNV ALYWHdOUd dO LNAWLUVdad SANV'ISI NIDUIA SH.LV.LS GALINA HHL dO LNHNNYXAOD We 00-01 Pld 24d SL0Z “8 _ Lilple Addy Warm Mix Asphalt (WMA) Guide Specification for Highway Construction Division 400 - Asphalt Pavements and Surface Treatments SECTION 406 - WARM MIX ASPHALT (WMA) PAVEMENT Warm mix asphalt (WMA) is the generic term used to describe the reduction in production, paving, and compaction temperatures achieved through the application of one of several WMA technologies. Some modifications to HMA plants may be necessary to accommodate the WMA technologies as noted in Section 406.03 Construction. Production and paving temperatures may need to be increased for higher recycled asphalt pavement (RAP) contents, increased haul distances, decreased ambient temperatures, or other WMA project specific conditions. All provisions for the production and placement of conventional HMA mixtures as stipulated in Standard Specification for Construction and Bridges on Federal Highway Projects (FP), Section 403 are in force except as noted below. 406.01 Description Construct one or more courses of plant produced warm mix asphalt (WMA) pavement on a prepared foundation, using virgin aggregate or a combination of virgin and/or reclaimed aggregate material (RAM) and prescribed manufactured WMA additives and/or WMA plant process modifications. Use of RAP materials, consisting of cold milled, crushed, or processed bituminous asphalt mixture are permitted at the current 25 percentages, provided that the mixture meets all the requirements of these specifications. 406.02 Material WMA may be produced by one or a combination of several technologies involving HMA plant foaming processes and equipment, mineral additives, or chemicals that allow the reduction of mix production temperatures to within 185°F to 275°F. (Note: The upper lemperature range is appropriate for modified asphalt binders and WMA mixtures which include higher percentages of reclaimed asphalt pavement.) Provide materials as specified in: Aggregate Subsection 703.07 or 703.17 Antistrip additive Subsection 702.08 Asphalt binder Subsection 702.01 Mineral Filler Subsection 725.05 Recycled Asphalt Pavement Subsection 703.19 Recycling Agent Subsection 702.06 406.03 Construction A. Mix Design. Develop and submit a job mix formula for each mixture according to AASHTO R 35. Each job mix formula must be capable of being produced, placed, and compacted as specified. Apply all mix design requirements for HMA to the development of the WMA mix design. Submit a written job mix formula for review and approval at least 28 days before production, or when sources of asphalt binder, aggregates, WMA additives, or other components of the mix change. Submit the following information: All information required in the report section of AASHTO R 35, 1. 2. WMA technology and/or WMA additives information. 3. WMA technology manufacturer’s established recommendations for usage. 4. WMA technology manufacturer’s established target rate for water and additives, the acceptable variation for production, and documentation showing the impact of excessive production variation. 5. WMA technology material safety data sheets (MSDS), 6. Documentation of past WMA technology field applications including project type, project owner, tonnage, location, mix design, mixture volumetrics, field density, and performance. 7. Temperature range for mixing, 8. Temperature range for compacting. 9. Asphalt binder performance grade test data over the range of WMA additive percentages proposed for use. 10. WMA mixture performance test results. 11. Laboratory test data, samples and sources of all mi xture components, and asphalt binder viscosity-temperature relationships. B. Additives. Use anti-stripping additives, silicone additives, WMA additives, and WMA technologies as specified. Comply with approved mix design quantities. Confirm the addition rate through field tests performed during production. Comply with the manufacturer’s recommendations for incorporating additives and WMA technologies into the mix. Comply with manufacturer’s recommendations regarding receiving, storage, and delivery of additives. Maintain supplier recommendations on file at the asphalt mixing plant and make available for reference while producing WMA. C. Sampling. Perform sampling according to the following standards: |. Aggregate. AASHTO T 2. 2. Asphalt Binder. AASHTO T 40. 3. Warm Mix Asphalt (WMA) Plant Mix. AASHTO T 168. D. Weather Limitations. 1. Place WMA mixtures only on dry, unfrozen surfaces and only when weather conditions allow for Proper production, placement, handling, and compacting. 2. Meet Table 401-2 placement temperatures. E. Equipment. Use equipment and WMA technologies capable of prod ucing an asphalt mixture that meet specification requirements and is workable at the minimum placement and compaction temperature desired, regardless of storage or haul distance considerations. |. Asphalt Mixing Plant. Meet AASHTO M 156 and FP Subsection 401.04. Modify the asphalt mixing plant as required by the manufacturer to introduce the WMA technology. Plant modifications may include additional plant instrumentation, the installation of asphalt binder foaming systems and/or WMA additive delivery systems, tuning the plant burner and adjusting the flights in order to operate at lower production temperatures and/or reduced tonnage. (Note: Implementation of best management practices in the control of aggregate moisture content prior to introduction to the drying or mixing drum is highly recommended in order to achieve the maximum benefit of WMA technology.) Combine and mix the dried aggregates and asphalt binder to meet the job mix formula. Ensure a minimum of 95 percent uniform coating of aggregates according to AASHTO T 195. Correct procedures if storing or holding causes segregation, excessive heat loss, or a reduced quality mixture. Properly dispose of mixture which does not meet specifications. G. Preparing Base or Existing Surface. Clear surface of debris and deleterious material. Apply and cure tack coat before placing the WMA. Apply a tack coat on all surfaces, curbs, gutters, manholes, or other structure surfaces, that will be in contact with the WMA. Repair damaged areas of the base or existing surface. Restore the existing surface or base to a uniform grade and cross section before placing the mix. H. Pre-paving Requirements. Prior to placing any WMA mix, produce a sufficient amount of WMA mix to properly calibrate the plant and procedures using the mix design approved for mainline construction, The Engineer will sample and test the WMA mix thus produced for the following: Voids in mineral aggregate (VMA): Asphalt binder content; Gradation; Air voids; and Tensile strength ratio (or Hamburg wheel tracking test for moisture damage) WA wo Heat WMA field samples, transported to the laboratory, to the field production temperature, or lower, when reheating is required for WMA mixture testi ng. (Note: Field produced WMA loose mix samples which are immediately compacted and tested, without reheating, may produce lower voids in mineral aggregate and lower air voids test results when compared to reheated samples. This should be validated during the test strip or initial production lot. One possible remedy is to cool the WMA sample to room temperature and reheat to a temperature that is less than or equal to the WMA field production temperature before laboratory compaction. This will minimize the WMA technology's effects on the test results and ensures the sample is not excessively aged.) Place no WMA mixture that fails to meet specification requirements. WMA mixture not meeting the requirements may be used in the construction of temporary facilities when approved by the Engineer. Construct a control strip or initial production lot with production materials and equipment. Select compacting methods to meet the specified density. The Engineer will take random loose mix and core samples to verify compliance with job mix and specification requirements. Reconstruct the test strip or initial production lot if the job mix formula, the compacting method, or compacting equipment changes, or if results do not meet specifications. 1. Spreading and Finishing. Spread and finish the mixture with asphalt pavers to specified grade and thickness. Hand place material in areas inaccessible to mechanical spreading and finishing equipment. Maintain a consistent supply of mixture to ensure uninterrupted paving. Minimize inconvenience to traffic and protect existing and finished surfaces. Leave only short lane sections, normally less than [26 ft (8 m)], where the abutting lane is not placed the same day, or according to Manual on Uniform Traffic Control Devices (MUTCD) traffic safety requirements. J. Compacting. Compact immediately after spreading and before the WMA mixture falls below the minimum job mix design compaction temperature. Discontinue paving if unable to achieve the specified density before the mixture cools below the minimum recommended WMA job mix design compaction temperature. Provide the number, weight, type, and sequence of rollers necessary to compact the mixture without displacing, cracking, or shoving. Roll the WMA mixture parallel to the centerline. Begin rolling superelevated curves at the low side and continue to the high side, overlapping longitudinal passes parallel to the centerline. Maintain a uniform roller speed with the drive wheels nearest the paver. Operate vibratory rollers uniformly at the manufacturer’s recommended speed and frequency. Continue rolling to eliminate all roller marks and to achieve the minimum 92 percent of laboratory density as determined according to AASHTO T 209. Maintain the line and grade of the edge during rolling. Prevent the mixture from adhering to the rollers by using very small quantities of detergent or other approved release material. Hand compact areas inaccessible to rollers. The Engineer will take random tests of the compacted pavement to verify specification compliance. At no cost to the Agency, remove and replace mixture that does not meet specification requirements or that becomes contaminated with foreign materials. Remove defective materials for the full thickness of the course by saw cutting the sides perpendicular and parallel to the direction of traffic. Coat saw cut edges with bituminous materials and replace the defective material with specification materials. K. Joints. Protect ends of a freshly laid mixture from damage by rollers. Form transverse joints to expose the full depth of the course. Apply a tack coat on transverse and longitudinal joint contact surfaces immediately before paving. Construct all longitudinal joints within 12 in. (300 mm) of the lane lines. Offset longitudinal and transverse joints on succeeding lifts 6 inches (150 mm) to 12 inches (300 mm) from the joint in the layer immediately below. Create the longitudinal joint in the top layer along the centerline of two-lane highways or at the lane lines of roadways with more than two lanes. L. Surface Tests. The Engineer will test pavement surfaces to verify compliance with FP Subsection 401.1 6, smoothness and texture requirements. Correct pavement surfaces that do not meet specification requirements by cold milling, diamond grinding, overlaying, or removing and replacing according to the following: a. Diamond Grinding. Diamond grind final pavement surfaces exposed to vehicle traffic to the required surface tolerance and cross section. Remove and dispose of all waste material. b. Cold Milling. Cold mill intermediate pavement surfaces to the required surface tolerance and cross section. Remove and dispose of all waste materials. c. Overlaying. Use specification materials for overlays. Overlay the full width of the underlying pavement surface. Place a minimum recommended overlay thickness of [1.6 in. (40 mm)]. Use only one overlay. d. Removing and Replacing. Replace rejected areas with WMA pavement materials that meet specification requirements. Test the corrected surface area. Complete all corrections before determining pavement thickness. 406.04 Measurement The Engineer will measure work acceptably completed as specified in Subsection 109.02. The Engineer will base quantities of asphalt binder on the theoretical mass incorporated into accepted product as verified by samples taken according to Subsection 702.01. 406.05 Payment Include costs of plant startup operations, considering both labor and materials, in the price bid for the mixture in place, The Agency will pay for accepted quantities at the contract unit price as follows: Pay Item Pay Unit (A) Asphalt Binder ton (Mg), gal (L) , (B) WMA Plant Mix—Type ton (Mg), yd? 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