A_-_25-18-ITB_-_Citywide_Pavement_Maintenance_and_Rehabilitative_Services.pdf

INVITATION TO BID

25-18-ITB

CITYWIDE PAVEMENT MAINTENANCE AND REHABILITATIVE

SERVICES

Contact Person

Jessica Graham, CPPB Procurement/Contracts Manager

Phone: (772) 388 – 8231 Email: Procurement@cityofsebastian.org

*Dates in this schedule occurring after the release date may be amended by the City.

The City reserves the right to delay or modify dates and will notify Proposers of all changes.

PROPOSED SCHEDULE

EVENT DATE TIME

RELEASE DATE: Thursday, July 10, 2025 -

PRE-BID MEETING Tuesday, July 22, 2025 9:30 AM Local Time

QUESTION DEADLINE Tuesday, July 29, 2025 2:00 PM Local Time

BID DUE DATE Thursday, August 14, 2025 2:00 PM Local Time

RECOMMENDATION OF AWARD September 2025 6:00 PM Local Time mailto:Procurement@cityofsebastian.org

SECTION 1 – INSTRUCTIONS TO BIDDERS

1.1 PURPOSE

1.1.1 The City of Sebastian is requesting bids from qualified Contractors for Citywide Pavement Maintenance and Rehabilitative Services. Services include pavement preservation (asphalt rejuvenation), full-depth reclamation, micro-surfacing, crack sealing, and paint and thermoplastic striping/pavement markings. Work shall be performed in accordance with the specifications provided for each project. Services will be on an as-needed basis for various roadways throughout the City of Sebastian as needs are identified and funding is available.

1.1.2 By submitting a proposal, the Contractor agrees to comply with all federal and state laws and regulations, including 2 C.F.R. 200.317 through 200.326 and Appendix II to 2 C.F.R. part 200 entitled “Contract Provisions for Non- Federal Entity Contracts Under Federal Awards.”

1.1.2.1. See Attachment A for Contract Provisions for Non-Federal Entity

Contracts Under Federal Awards.

1.1.3 All solicitations are posted on VendorLink (https://www.myvendorlink.com/).

It is the sole responsibility of interested parties to monitor VendorLink for solicitation opportunities and updates.

1.2 ELECTRONIC BID SECURITY

Electronic proposal security shall be submitted by the proposer and made payable to the City of Sebastian in an amount of not less than five percent (5%) of the total proposal price. A contractor may file an alternative form of security in cash, a money order, a certified check, a cashier’s check, or a domestic corporate bond, note, or debenture as authorized in s. 625.317. The electronic proposal security shall be issued by a company with a registered agent in Florida. Personal or business checks are not acceptable.

1.3 PRE-BID MEETING

A non-mandatory pre-bid meeting will be held on Tuesday, July 22, 2025, at 9:30 AM local time at the City of Sebastian Public Works Compound, 505 Airport Drive West, Sebastian, FL 32958.

1.4 QUESTION DEADLINE

1.4.1 The deadline to submit questions will be Tuesday, July 29, 2025, at 2:00

PM local time. Any questions or communication regarding this solicitation must be emailed to the City’s Procurement/Contracts Manager at jessgraham@cityofsebastian.org.

https://www.myvendorlink.com/ http://www.leg.state.fl.us/Statutes/index.cfm?App_mode=Display_Statute&Search_String=&URL=0600-0699/0625/Sections/0625.317.html mailto:kkillgore@cityofsebastian.org

1.4.2 The Bidder is responsible for checking for addenda associated with this solicitation.

1.5 ELECTRONIC BID SUBMITTAL AND BID OPENING

1.5.1 All Bids must be submitted via VendorLink electronically https://www.myvendorlink.com/.

1.5.2 All sealed bids are due by Thursday, August 14, 2025, by 2:00 P.M. local time.

1.5.3 The bid opening will be held virtually. Bids will be opened at 2:10 p.m. local time. Only the NAME of the company that submitted a response to this Invitation to Bid will be read aloud.

1.5.4 Meeting Information:

https://v.ringcentral.com/join/136259113?pw=96e7b3457df176e15b92423 dbabea4df Meeting ID: 136259113 Password: JhzXZgfvah

Or dial:

+1 (650) 419-1505 United States (San Mateo, CA) Access Code / Meeting ID: 136259113 Dial-in password: 5499943824

1.5.5 All bids submitted to the city become public records unless exempt under Florida or other law.

1.5.6 Late bids will not be opened or announced. Bidders can pick up or pay for the mailed return of their late, unopened bid. If this option is not exercised within five (5) days of the Bid Opening date, the late, unopened bid will be disposed

1.5.7 At its sole discretion, the City may reject any and all bids or accept any bid or portion thereof deemed to be whatever is in its best interest and to waive any non-substantial irregularities.

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https://www.myvendorlink.com/ https://v.ringcentral.com/join/136259113?pw=96e7b3457df176e15b92423dbabea4df%20%20%20 https://v.ringcentral.com/join/136259113?pw=96e7b3457df176e15b92423dbabea4df%20%20%20

Indian River Press Journal Date Advertised: Thursday, July 10, 2025

CITY OF SEBASTIAN, FLORIDA

NOTICE TO BIDDERS

Citywide Pavement Maintenance And Rehabilitative Services

NOTICE IS HEREBY GIVEN that the City of Sebastian is accepting bids for Citywide Pavement Maintenance and Rehabilitative Services. The solicitation document outlining the scope of services is available from VendorLink (https://www.myvendorlink.com/external/bids).

Bids are due Thursday, August 14, 2025, 2:00 pm, Local Time.

A non-mandatory pre-proposal meeting will be held on Tuesday, July 22, 2025, at 9:30 a.m. local time, in the Public Works Training Room, Public Works Compound, 505 Airport Drive W, Sebastian, FL 32958.

Questions are due on Tuesday, July 29, 2025, at 2:00 pm local time. All questions shall be directed to the Procurement/Contracts Manager, Jessica Graham, CPPB, at 772-388- 8231 or by email at procurement@cityofsebastian.org.

https://www.myvendorlink.com/external/bids mailto:procurement@cityofsebastian.org

TABLE OF CONTENTS

Section 1 – Instructions To Bidders 2

Legal Ad 4

Table of Contents 5

Section 2 – Scope of Work 6

Section 3 – Special Conditions 80

Section 4 – General Terms And Conditions 83

Section 5 – Required Forms 101

• Contact Information Sheet 102

• Corporate Resolution (If Applicable) 103

• Statement Of Bidder’s Qualifications 104

• Non-Collusion Affidavit Of Prime Bidder 106

• Drug-Free Workplace Program 107

• Certification Regarding Debarment And Suspension 108

• Certification Regarding Scrutinized Companies 109

• Appendix A, 44 C.F.R. Part 18 – Certification Regarding Lobbying 110

• Contracting With Entities Of Foreign Countries Of Concern Prohibited Affidavit

• Reference List 112

• Subcontractor List 116

• Addenda Acknowledgement 117

Section 6 – Bid Price Form Instructions 118

Section 7 – Bonding Capacity Letter and Bid Bond 119

• Bid Bond 120

• Bonding Capacity Letter 122

Attachments - Uploaded to VendorLink

• Attachment A - Contract Provisions for Non-Federal Entity Contracts Under Federal Awards

• Attachment B - FY 2025-26 FDOT Standard Specifications, Section 334 – Superpave Asphalt Concrete

• Attachment C – Electronic Bid Price Form

• Attachment D – Sample Contract

SECTION 2 – SCOPE OF WORK

2.1 SCOPE OF WORK - GENERAL

2.1.1 The City of Sebastian is requesting bids from qualified contractors for

Citywide Pavement Maintenance and Rehabilitative Services. The Contractor shall be responsible for providing all labor, materials, equipment, and other items required to provide pavement/asphalt maintenance and rehabilitation services and striping/pavement marking on an as-needed basis for various roadways throughout the City of Sebastian, as funding is available. The services include, but may not be limited to, milling, resurfacing, pavement preservation (asphalt rejuvenation), full-depth reclamation, micro-surfacing, crack sealing, and paint and thermoplastic striping/pavement markings. All work shall be performed in accordance with the plans and/or specifications provided for each project. The City reserves the right to utilize other contracts for these services as needed.

2.1.2 Before submitting a cost proposal for Purchase Order request under this Contract, the Contractor shall visit the site to inspect any designated areas for any possible obstruction (both overhead and adjacent) and differences in scope (i.e., paving area) and advise the City in writing of any obstructions or other conditions that may pose differences in the proposed scope of work.

SCOPE OF WORK – TECHNICAL

2.2 CHIP SEAL/FOG SEAL

2.2.1 Scope of Work: The work specified in this section consists of furnishing and applying a single, double, or triple application of the bituminous surface treatment on a paved roadway or a prepared road base, compacted to the lines, grades, and thickness established by the City and in substantial conformance with the limits established by the owner.

2.2.2 Description: Chip Seal is a pavement surface treatment option that combines a layer of polymer modified liquid asphalt emulsion placed on a prepared base with a layer of aggregate spread and compacted while the asphalt is still liquid.

2.2.3 Materials:

A. Aggregates: Crushed granite conforming to FDOT Specifications

Section 901, table 1 for #89, #78, or #67 gradation for coarse aggregates except as modified herein. The aggregate shall be washed granite obtained from a source approved by the owner. Sampling and testing of aggregate shall be the responsibility of the contractor. Copies of test results from the aggregate supplier shall be furnished to the City before starting the surface treatment.

All aggregate, #89, #78, and #67 shall be treated before applying Emulsified Asphalt Grade CSS-1H at the rate of 0.4% to 0.8% residual asphalt. All aggregate, clean broken stone, shall be pre-coated with an asphaltic material before the oil and chip process. All of the stones shall have 100% total coverage. A pugmill shall be used to pre-coat the aggregate. Stone having less than 100% total coverage shall not be used. The emulsified asphalt grade CSS-1H shall coat the entire surface of all of the aggregate. The pre- coating process is to take place at a location that the contractor has procured. The City shall approve the pre-coated aggregate before the seal coat process begins.

All costs for the pre-coating and placement of aggregate shall be included in the applicable chip seal or fog seal pay item as identified in the unit price proposal.

Payment shall not be made unless a representative of the City is present to observe the pre-coating process.

B. Liquid bituminous material for surface treatment: CRS-2P liquid bituminous material conforming to AASHTO M 316-99. When CRS-2P is specified, apply the following modifications:

1. Distill the CRS-2P at 400ºF for 20 min. and

2. Provide Polymer-Modified Cationic Emulsified Asphalt, CRS-2P produced by using polymer modified base asphalt only. The emulsion shall be pumpable and suitable for application through a distributor truck.

C. The Cationic mixing grade shall be homogeneous and of high quality.

The material shall be prepared from straight-run Asphalt of high ductility and shall contain a rubber hydrocarbon additive derived from latex in addition to carefully controlled amounts of selected diluents to promote workability and minimize stripping. Additives that enhance pavement performance are subject to approval by the City. The polymer material shall be co-milled into the asphalt or added to the emulsifier solution prior to the emulsification process. The amount of polymer modifier shall not be less than 3.0% polymer solids based on the asphalt content (by weight) and will be certified by the emulsified asphalt supplier.

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Cationic Asphalt Emulsion

Material Designation

Test on Emulsion: Minimum Maximum

Viscosity, Saybolt Furol, 77 degrees F (25 C), Viscosity, Saybolt, 122 degrees F (50 C), s 100 400

Demulsibility, 35ml, 0.8 percent DSS, % 70 -

Sieve Test, % - 0.1

Residue by Distillation, 350ºF max, % 65 -

Oil distillate, % by volume of emulsion - 0.5

Residue Test, ASTM D 244 Low Temp Minimum Maximum

Penetration, 77ºF, 100gr, 5 sec 70 150

Elastic Recovery, ASTM D 6084, method

B, 77ºF, 5 cm/min, % 50 -

Softening Point, ºF 125 -

Solubility in Trichloroethylene, % 97.0 -

D. Material Samples: The City will require the Contractor to sample and test each emulsion load before delivery. The Contractor will also provide a sample of the emulsion on-site before commencing work. The City will require the Contractor to provide sample containers and a local independent testing laboratory without affiliation with the emulsion supplier to analyze the emulsion. The Contractor will be responsible for the cost of the testing. The City reserves the right to test any shipment of emulsion that is believed to be substandard (color, viscosity, non-homogeneous application, etc.). All samples shall be shipped and stored in clean, air-tight, sealed wide-mouth jars or bottles made of plastic.

2.2.4 Equipment:

A. Distributor: The liquid bituminous material shall be applied with a truck-mounted pressure distributor calibrated within the previous twelve months for transverse and longitudinal application rates. The distributor shall be equipped, maintained, and operated to apply the bituminous material at controlled temperatures and rates from 0.035 to 1.5 gallons per square yard. The distributor shall be capable of applying bituminous material of variable widths up to 16 feet. The distributor shall uniformly apply the bituminous material to the specified rate with a maximum allowed variation of 0.015 gallons per square yard. Distributor equipment shall include a tachometer, an accurate volume measuring device, a calibrated tank, and a thermometer for measuring the tank’s contents. Distributors shall have a heating device, an asphalt pump, and full circulating spray bars adjustable laterally and vertically. Distributors and transport trailers shall be equipped with a sampling valve. Distributor trucks shall be of the pressure type with insulated tanks. The use of gravity distributors will not be permitted. The valves shall be operated by levers so that one or all valves may be quickly opened or closed in one operation. The valves that control the flow from nozzles shall act positively to provide a uniform, unbroken spread of bituminous material on the surface. The distributor shall be equipped with devices and charts to provide accurate and rapid determination and control of the amount of bituminous material being applied, with a bitumeter on the auxiliary wheel type registering speed in feet per minute and trip and total distance in feet. Two distributor trucks will be required on all projects.

B. Aggregate Spreader: The aggregate spreader shall be a self-propelled unit capable of uniformly spreading the aggregate at the required rate on a minimum width of six inches wider than the width of the lane to be treated. The spreader shall be calibrated within the previous twelve months for transverse and longitudinal application. The spreader shall be capable of extending to a width of 22 feet. The spreader shall be equipped with a computer-controlled aggregate/chip spreader to ensure the appropriate aggregate coverage at varying speeds unless approved otherwise by the City.

C. Rollers: The contractor shall use one ten-ton steel-wheeled roller and two eight to twelve-ton self-propelled pneumatic tire rollers with oscillating wheels and low-pressure, smooth tires. Maintain the inflation of the tires such that in no two tires, the air pressure varies more than five psi. The rollers will be equipped with an operating water system and coco pads. A sufficient number of rollers and a sufficient number of passes shall be used to ensure cover aggregate is appropriately rolled.

D. Self-Propelled Rotary Power Broom: The self-propelled rotary broom shall be designed, equipped, maintained, and operated so the pavement surface can be swept clean. The broom shall have an adjustment to control the downward pressure.

E. Additional Equipment: Additional equipment will be needed to complete the operations required by this technical provision. All equipment necessary for completing projects governed by this technical provision shall be included in the unit costs associated herein.

Availability of quality assurance devices (such as a 10' straight edge) shall be the Contractor's responsibility.

2.2.5 Construction:

A. Layout: The Contractor will be responsible for the string lining and layout of the roadway before paving. Weather and Seasonal Limitations:

The surface treatment shall not be applied to a wet surface or when rain occurs or the threat of rain is present immediately before placement. The surface treatment shall not be applied when the temperature is less than

50 degrees Fahrenheit in the shade. When applying emulsions, the surface temperature shall be a minimum of 55°F, and no more than 140°F.

B. Preparation of Surface: The chip seal material shall be placed on a firm, unyielding prepared roadway. The Contractor shall be responsible for clipping back shoulders and removing overburden or any other vegetation or debris to ensure that the road is free of organic and deleterious material. The contractor will be responsible for blowing or sweeping the road immediately ahead of the chip seal operation to ensure the road is free of loose aggregate and other debris.

C. Application of Bituminous Material: Liquid bituminous material shall be applied using a pressure-type distributor in a uniform, continuous spread over the section to be treated. The distributor shall be moving forward at the proper speed when the liquid is discharged onto the pavement to provide an even and consistent application at the rate prescribed. If any areas are deficient, the operation shall be stopped and corrected immediately. The liquid shall not be applied more than two hundred feet before the aggregate spreader when the ambient air temperature exceeds 75 degrees or one hundred feet if the air temperature is between 55 and 75 degrees.

1. Single Chip Seal: Application of the liquid bituminous material shall be applied at a rate of 0.38 0.45 gallons per square yard, depending on the composition of the existing road bed, surface texture, and the aggregate's size in use

2. Double Chip Seal: The second application of liquid bituminous material shall be applied at a rate of 0.38 - 0.42 gallons per square yard depending upon the size of the first layer of aggregate that the liquid is sprayed upon and the size of the aggregate being placed over the first application of surface treatment.

3. Triple Chip Seal: The third application of liquid bituminous material shall be applied at a rate of 0.32 - 0.38 gallons per square yard depending upon the size of the first two layers of aggregate that the liquid is sprayed upon and the size of the aggregate being placed over the first and second applications of surface treatment.

D. Application of Cover Aggregate: Immediately following the spray application of the liquid bituminous material, cover aggregate shall be spread over the liquid material at a rate of 18–30lbs per square yard depending upon the type of road base and the size of the existing aggregate that is being resurfaced.

E. Rolling: Immediately following the first application of the cover material, roll the entire surface with a pneumatic roller, followed immediately with the steel drum roller. Cover the entire surface one time with the steel drum roller. Then, roll the cover material again with the pneumatic roller.

Continue rolling as long as necessary to ensure thorough keying of the cover aggregate into the liquid bituminous material. Eliminate the steel drum when rolling the second application of cover aggregate. Apply the second application of liquid and cover material the same day as the first application, as far as it is practicable and consistent with the setting of the liquid bituminous material.

F. Sweeping: After rolling the first application of cover aggregate, lightly broom the loose aggregate not to dislodge the aggregate embedded in the liquid. Sweep loose material from the roadbed. Following the second application, again, broom loose aggregate from the road bed before applying the fog seal. If temperatures exceed 85 degrees, it may be necessary to wait 24 hours before sweeping the first application of the chip seal.

G. Fog Seal: Upon direction from the City, the fog seal is to be applied as a separate pay item. When surface treatment has been set, a fog seal is to be applied at a rate of 0.1 to 0.15 gallons per square yard to the entire surface treatment. The liquid for the fog seal shall be a cationic mixing type emulsion diluted forty percent with water. If sanding is needed, the fog seal shall be lightly sanded at a rate of plus or minus two pounds per square yard utilizing a mechanical spreader.

H. General Performance: Provide completed pavement that performs to the satisfaction of the City without bleeding, rutting, shoving, raveling, stripping, or showing other types of pavement distress or unsatisfactory performance.

I. Traffic Control: The Contractor shall furnish all necessary traffic control, barricades, signs, and flaggers to ensure the safety of the traveling public and to all working personnel. Traffic shall not travel on the fresh mix until rolling and blotting have been completed. The Contractor shall submit a Maintenance of traffic (MOT) plan indicating all facets of traffic control for the project area. The MOT plan must be accepted in writing by the City before commencing any work. All traffic control shall be following the FDOT Standard Plans, most current edition, and TP-102.

MOT and associated devices shall be checked daily and periodically throughout the project for compliance, and where adjustments or corrections are needed, prompt revisions shall be made. In the event that the work requires a special traffic control plan that deviates from FDOT standards, the contractor shall submit a signed and sealed traffic control plan or MOT plan to the City for acceptance. This signed and sealed plan shall be incidental to the construction cost.

J. Method of Measurement: If a pay item is listed on the unit price proposal for work required in this Technical Provision, the quantity to be paid shall be as specified in the unit price proposal, including all items of work described herein. Any item necessary for Chip Seal and not explicitly listed in another item in the unit price proposal shall be included in this item. Should the contractor be directed to place Fog Seal as a secondary application to Chip Seal, it shall be measured separately as listed in the Technical Provision for Fog Seal.

K. Basis of Payment – Chip Seal: The quantities to be paid for under this Technical Provision shall be included in the Square Yard price for Chip Seal (single application), chip seal (double application), or chip seal (triple application) as listed in the unit price proposal. The unit price includes all items listed in the contract, including all General Conditions, Special Conditions, and Technical Provisions pertaining to chip seal, including all items of work described herein. No additional payment will be provided for any item necessary to complete this contract as detailed in the specifications, except that at the direction of the City, fog seal shall be applied and paid separately as listed in the Technical Provision for fog seal.

L. Warranty of Chip Seal: The Contractor shall provide the City, upon final acceptance of the Chip Seal work, a warranty period of three (3) years which shall include all labor, materials, hauling, traffic control, and striping to repair the defective areas. Defective areas shall include debonding/delamination, excessive raveling, and aggregate loss, exposing the old roadway surface. The Contractor shall perform all warranty work at no cost to the City. The Contractor shall have been doing business in the State of Florida for at least four years prior to the date of this bid and have full-time, experienced personnel to respond to any warranty issues within 24 hours. The Contractor can be called to perform work or warranty work at any time of the year as needed by the City. The Contractor must have a full-time presence with an office, experienced personnel, and the proper equipment in Florida to respond 365 days a year.

2.3 CAPE SEAL

2.3.1 Description: The work specified in this section consists of furnishing and applying a single application of polymer modified bituminous surface treatment followed by a mixture of polymer- modified emulsified asphalt, mineral aggregate, mineral filler, water, and other additives, properly proportioned, mixed, and spread on a paved surface, established by the City and in substantial conformance with the limits established by the City.

This two-step process is called a cape seal.

2.3.2 Materials:

A. Aggregates: for the first coat, surface treatment crushed granite conforming to FDOT specifications section 901, table 1 for #89 gradation for coarse aggregates except as modified herein. The aggregate shall be washed granite obtained from a source approved by the owner.

Sampling and testing of aggregate shall be the responsibility of the contractor. Copies of test results from the aggregate supplier shall be furnished to the owner before starting the surface treatment.

All aggregate #89 shall be treated before applying Emulsified Asphalt Grade CSS-1H at the rate of 0.4% to 0.8% residual asphalt. All aggregate, clean broken stone, shall be pre-coated with an asphaltic material before the oil and chip process. All of the stones shall have 100% total coverage. A pugmill shall be used to pre-coat the stone.

Stone having less than 100% total coverage shall not be used. The emulsified asphalt grade CSS-1H shall coat the entire surface of all of the aggregate. The pre-coating process is to take place at a location that the contractor procures. The City shall approve the pre-coated aggregate before the seal coat process begins.

All costs for the pre-coating and placement of aggregate shall be included in the cost of the item Cape Seal.

Payment shall not be made for the Cape Seal unless a representative of the City is present to observe the pre-coating process.

B. Aggregates: for the final coat, use an aggregate consisting of 100% crushed stone. The aggregate shall be a crushed stone such as granite, slag, limestone, chat, or another high- quality aggregate, or a combination thereof. To assure the material is 100 percent crushed, the parent aggregate will be larger than the largest stone in the gradation used. Use aggregate source(s) from the list of aggregates available on FDOT’s website and meet the requirements of this specification.

In addition to the requirements of FDOT Standard Specification Sections 901 and 902, meet the minimum aggregate requirements of Table 62-1.

Table 62-1

Quality Tests for Aggregate

AASHTO Test No. Aggregate Property Specification Requirements

AASHTO T 176 Sand Equivalent 65 Minimum

AASHTO T 104 Soundness 15% Maximum using Na2SO4 or

25% Maximum using MgSO4

AASHTO T 96

Abrasion Resistance

(1) 30% Maximum

(1) The abrasion test will be performed on the parent aggregate.

C. Gradation Requirements: When tested following FM 1-T 027 and FM

1-T 011, the target (mix design) aggregate gradation, including the mineral filler, shall be within the gradation range for a Type II mixture shown in Table 62-2, Column II.

Table 62-2

Mix Design Gradation Requirements

Sieve Size Type II Mix Design

Range Percent Passing Stockpile Tolerance from

Mix Design Percent Passing

3/8 inch 100 N/A

No. 4 90-100 ± 5%

No. 8 65-90 ± 5%

No. 16 45-70 ± 5%

No. 30 30-50 ± 5%

No. 50 18-30 ± 4%

No. 100 10-21 ± 3%

No. 200 5-15 ± 2%

The aggregate will be accepted from the stockpile located at the project.

The stockpile will be accepted based on five quality control gradation tests conducted following FM 1-T 002. If the average of the five gradation tests is within the stockpile tolerances shown in Table 62-2, Column III for all of the sieve sizes, then the stockpile is accepted. If the average of the five gradation tests is not within the stockpile tolerances shown in Table 62-2, Column III, for any sieve size, remove the stockpiled material and replace it with new aggregate or blend other aggregate sources with the stockpiled material. Aggregates used in blending must meet the quality tests shown in Table 62-1 before blending and must be blended in a manner to produce a consistent gradation and sand equivalent value. If a new aggregate is obtained or blending of aggregates is performed, resulting in an aggregate that is not represented by the mix design, the contractor shall submit a new mix design to the Engineer for approval before production of the mix.

The Engineer may obtain stockpile samples at any time. If the average of five gradation tests conducted following FM 1-T 002 is not within the gradation tolerances shown in Table 62-2, Column III for any sieve size, cease production until the problem is corrected to the satisfaction of the Engineer.

Screen all stockpiled aggregates at the stockpile area before delivery to the paving machine to remove oversize material and non-desirable particles.

D. Mineral Filler: If a mineral filler is utilized in the mix design, use non-air-entrained Portland cement or hydrated lime, free from lumps. The Engineer will accept the mineral filler by visual inspection. The type and amount of mineral filler shall be determined by a laboratory mix design and considered part of the aggregate gradation. An increase or decrease of less than one percent mineral filler may be permitted during production if found to result in better consistency or set times. Any changes to the percentage of mineral filler must meet the requirements of Table 62-4.

E. Water: Utilize potable water that is free of harmful soluble salts, reactive chemicals, or any other contaminants.

F. Additives: Additives may be added to the mixture or any of the component materials to provide control of quick-trafficking properties.

The additives to be used should be indicated on the mix design and be compatible with the other components of the mix.

G. Mix Design: Before work begins, the Contractor shall submit a mix design to the Engineer. The mix design must have an aggregate source used on five similar projects and developed using the specific materials to be used on the project. The mix design shall be developed by an independent, accredited laboratory with no affiliation to the emulsion supplier and endorsed by the International Slurry Surfacing Association (ISSA) and has experience designing such mixtures.

Submit the proposed mix design with supporting test data indicating compliance with all mix design criteria. Allow the Engineer a maximum of two weeks to either conditionally verify or reject the mix design.

Meet the requirements provided in Table 62-3. After the mix design has been approved, no substitutions to the mix design will be permitted unless approved by the Engineer. The Engineer will consider inadequate field performance of a mix as sufficient evidence that the properties of the mix related to the mix design have changed, and the Engineer will no longer allow the use of the mix design. The project will be stopped until it is demonstrated that those properties, or issues, have been sufficiently addressed.

Table 62-3

Mix Design Testing Requirements ISSA Test No. Property Specification Requirements

ISSA TB-139(1)

Wet Cohesion:

@ 30 Minutes Minimum

(Set) @ 60 Minutes Minimum (Traffic)

12 kg-cm Minimum 20 kg-cm or Near Spin Minimum

ISSA TB-109

Excess Asphalt by

Loaded Whee Tester (LWT) Sand Adhesion

50 g/ft2 Maximum

ISSA TB-114 Wet Stripping 90% Minimum

ISSA TB-100

Wet-track Abrasion

Loss: One-hour Soak Six-day Soak

50 g/ft2 Maximum 75 g/ft2 Maximum

ISSA TB-147

Lateral Displacement

Specific Gravity after 1,000 Cycles of 125 lb.

5% Maximum

2.10 Maximum

ISSA TB-113(1)

Mix Time @ 77°F

(25°C) Controllable to 120 Seconds Minimum

The Cohesion test and Mixing Time test should be checked and reported for the highest temperatures expected during construction.

The mix design must clearly show the proportions of aggregate, emulsified asphalt, mineral filler, water, and additive usage based on the dry weight of the aggregate. Meet the mix design component material requirements provided in Table 62-4.

Table 62-4

Mix Design Component Material Requirements

Component Materials Specification Requirements

Residual Asphalt 5.5 to 10.5% (by dry weight of aggregate)

Mineral Filler 0.5 to 3.0% (by dry weight of aggregate)

Polymer-based Modifier Minimum of 3.0% (solids based on asphalt weight content)

Additives As needed

Water As required to produce proper mix consistency

The materials (aggregates, emulsion, mineral filler, and additives) must be from the same source, grade and type used to develop the approved mix design. The Engineer must preapprove any substitutions or alternate supplies. Changes in the aggregate source or emulsion source require re-validating the mix design and the performance properties.

Blending, co-mingling, and combining materials from two or more sources, grades or types is strictly prohibited. Aggregate stockpiles and emulsion material should be located at or near the job site in sufficient quantity for the job or designated parts of the job.

H. Liquid bituminous material for the first coat: CRS-2P liquid bituminous material conforming to AASHTO M 316-99. When CRS-2P is specified, apply the following modifications:

1. Distill the CRS-2P at 400ºF for 20 min. and

2. Provide Polymer-Modified Cationic Emulsified Asphalt, CRS-2P produced by using polymer modified base asphalt only. The emulsion shall be pumpable and suitable for application through a distributor truck.

The Cationic mixing grade shall be homogeneous and of high quality.

The material shall be prepared from an Asphalt of high ductility and shall contain a rubber hydrocarbon additive derived from latex in addition to carefully controlled amounts of selected diluents to promote workability and minimize stripping. Additives that enhance pavement performance are subject to approval by the City. The polymer material shall be co-milled into the asphalt or added to the emulsifier solution before the emulsification process. The amount of polymer modifier shall not be less than 3.0% polymer solids based on the asphalt content (by weight) and certified by the emulsified asphalt supplier.

Cationic Asphalt Emulsion

Material Designation

Test on Emulsion: Minimum Maximum

Viscosity, Saybolt Furol, 77 degrees F (25 C), s - -

Viscosity, Saybolt, 122 degrees F (50 C), s 100 400

Demulsibility, 35ml, 0.8 percent DSS, % 70 -

Sieve Test, % - 0.1

Storage Stability - 1

Residue by Distillation, 350ºF max, % 65 -

Oil distillate, % by volume of emulsion 0.5

Residue Test, ASTM D 244 Low Temp Minimum Maximum

Penetration, 77ºF, 100gr, 5 sec 70 150

Elastic Recovery, ASTM D 6084, method B, 77ºF, 5 cm/min, %

50 -

Softening Point, ºF 125 -

Solubility in Trichloroethylene, % 97.0 -

I. Liquid bituminous material for the final coat: Provide a quick-traffic, polymer-modified emulsified asphalt conforming to the requirements specified in AASHTO M 208 for CSS-1has listed in Table 62-5. The cement mixing test shall be waived for this product.

The polymer material shall be co-milled into the asphalt or added to the emulsifier solution before the emulsification process. The amount of polymer modifier shall not be less than 3.0% polymer solids based on the asphalt content (by weight) and certified by the emulsified asphalt supplier.

The Engineer may waive the five-day settlement test, provided job-stored emulsified asphalt is used within 36 hours from the time of the shipment or the stored material has had additional emulsified asphalt blended into it before use.

J. Quality Tests: The emulsified asphalt, and emulsified asphalt residue, shall meet the requirements of AASHTO M 208 for CSS-1h, with the following additions:

Table 62-5

Quality Tests for Emulsified Asphalt

AASHTO Test No.

Emulsified Asphalt Property Specification Requirements

AASHTO T 59 Residue after Distillation (1) 62% Minimum

AASHTO T 59 Cement Mixing Not Required

Quality Tests for Emulsified Asphalt Residue

AASHTO T 53 Softening Point 135°F (57°C) Minimum

(1) Maintain the test temperature at 350°F (177°C) for 20 minutes.

K. Sampling, Certification, and Verification: For the first load of emulsified asphalt produced for the project, the supplier shall submit a sample to the Engineer for testing before use. The Engineer will then assign a pretest number, and the pretest number shall be furnished with all emulsified asphalt delivered to the project.

During application, the Engineer may sample and test all subsequent loads of emulsified asphalt delivered to the project to verify and determine compliance with specification requirements. These tests identify material outside specification requirements; the Engineer may require the supplier to cease shipment of that pre-tested product. A further shipment of that pre-tested product to the owning agency’s projects will remain suspended until the cause of the problem is evaluated and corrected by the supplier to the Engineer's satisfaction.

L. Material Samples: The City will require the Contractor to sample and test each emulsion load before delivery. The Contractor will also provide a sample of the emulsion on-site before commencing work. The City will require the Contractor to provide sample containers and a local Independent testing laboratory with no affiliation to the emulsion supplier to analyze emulsion. The Contractor will be responsible for the cost of the testing. The City reserves the right to test any shipment of emulsion that is believed to be substandard. All samples shall be shipped and stored in clean air-tight sealed wide-mouth jars or bottles made of plastic.

2.3.3 Equipment:

A. Maintain all equipment, tools, and machines used in the performance of this work in satisfactory working condition at all times to ensure a high-quality product.

B. Distributor: The liquid bituminous material shall be applied with a truck-mounted pressure distributor that has been calibrated within the previous twelve months for transverse and longitudinal application rates.

The distributor shall be equipped, maintained, and operated to apply the bituminous material at controlled temperatures and rates from 0.035 to

1.5 gallons per square yard. The distributor shall be capable of applying bituminous material of variable widths up to twenty-four feet. The distributor shall uniformly apply the bituminous material to the specified rate with a maximum allowed variation of 0.015 gallons per square yard.

Distributor equipment shall include a tachometer, an accurate volume measuring device, a calibrated tank, and a thermometer for measuring the tank’s contents. Distributors shall be equipped with a heating device, asphalt pump, and full circulating spray bars adjustable laterally and vertically. Distributors and transport trailers shall be equipped with a sampling valve. Distributor trucks shall be of the pressure type with insulated tanks. The use of gravity distributors will not be permitted. The valves shall be operated by levers so that one or all valves may be quickly opened or closed in one operation. The valves that control the flow from nozzles shall act positively to provide a uniform unbroken spread of bituminous material on the surface. The distributor shall be equipped with devices and charts to provide accurate and rapid determination and control of the amount of bituminous material being applied and with a bitumeter of the auxiliary wheel type registering speed in feet per minute and trip and total distance in feet. Two distributor trucks will be required on all projects.

C. Aggregate Spreader: The aggregate spreader shall be a self-propelled unit capable of uniformly spreading the aggregate at the required rate on a minimum width of six inches wider than the width of the lane to be treated. The spreader shall be calibrated within the previous twelve months for transverse and longitudinal application. The spreader shall be capable of extending to a width of 24 feet. The spreader shall be equipped with a computer-controlled aggregate/chip spreader to ensure the appropriate aggregate coverage at varying speeds unless approved otherwise by the Engineer.

D. Rollers: The contractor shall use three eight to twelve-ton self-propelled pneumatic tire rollers with oscillating wheels and low pressure, smooth tires. Maintain the inflation of the tires such that in no two tires, the air pressure varies more than five psi. The rollers will be equipped with an operating water system and coco pads. A sufficient number of rollers and a sufficient number of passes shall be used to ensure cover aggregate is appropriately rolled.

E. Sweepers: A minimum of two vacuum sweepers shall be used on this project. In rural areas, a self-propelled rotary broom can be used. It shall be equipped, maintained, and operated so the pavement surface can be swept clean. The broom shall have an adjustment to control the downward pressure. A vacuum street sweeper must be used in residential areas, and all excess aggregate shall be swept within 24 to 48 hours after the first application of the Cape Seal has been applied.

F. Mixing Equipment: Truck mounted and self-loading continuous machines are acceptable. Mix the material with an automatic-sequenced, self-propelled mixing machine. It shall be a continuous-flow mixing unit able to accurately deliver and proportion the mix components through a revolving multi-blade, double-shafted mixer and to discharge the mixed product on a continuous-flow basis. The machine shall have sufficient storage capacity for all mix components to maintain an adequate supply to the proportioning controls. Four truck-mounted machines of 12 cubic yard capacity, or larger, will be required for all projects or roads one-half mile or less in length.

Self-loading continuous machines shall be capable of loading materials while maintaining micro-surfacing, thereby minimizing construction joints. Two self-loading machines shall be required on all projects or roads greater than one-half mile in length. Self-loading continuous machines shall be equipped to allow the operator to have complete control of the forward and reverse speeds during applications of the material and shall be equipped with opposite-side driver stations to assist in alignment. The self-loading device, opposite-side driver stations, and forward and reverse speed controls shall be original equipment-manufacturer design.

G. Proportioning Device: Provide and properly mark individual volume or weight controls for proportioning each material to be added to the mix (i.e., aggregate, mineral filler, emulsified asphalt, additives, and water).

H. Spreading Equipment: Agitate and spread the mixture uniformly in the spreader box using twin-shafted paddles or spiral augers fixed in the spreader box. Provide a front seal to ensure no loss of the mixture at the road contact point. The rear seal shall act as a final strike-off and shall be adjustable. The spreader box and rear strike-off shall be so designed and operated that a uniform consistency is achieved, and a free flow of material is provided to the rear strike- off. The spreader box shall have suitable means to automatically adjust the box width while traveling behind the mixing unit and side shift the box to compensate for variations in the pavement geometry.

I. Secondary Strike-off: Provide a secondary strike-off to improve surface texture. The secondary strike-off shall have the same adjustments as the spreader box. No burlap drags will be permitted on the final applications.

J. Auxiliary Equipment: Provide suitable surface preparation equipment, traffic control equipment, hand tools, and any other support and safety equipment necessary to perform the work.

K. Calibration: Calibrate each mixing unit to be used in the performance of the work in the presence of the Engineer before the start of construction. Previous calibration documentation covering the exact materials to be used may be acceptable, provided that no more than 60 days have elapsed.

Document the individual calibration of each material at various settings, which can be related to the machine metering devices. Do not utilize any mixing unit on the project until the calibration has been completed and approved by the Engineer. Any component replacement affecting material proportioning requires that the machine be recalibrated. No machine will be allowed to work on the project until the calibration has been completed and accepted.

L. Additional Equipment: Additional equipment will be needed to complete the operations required by this technical provision. All equipment necessary for the successful completion of projects governed by this technical provision shall be included in the unit costs associated herein. Availability of quality assurance devices (such as a 10-foot straight edge) shall be the Contractor's responsibility.

M. Experience: All contractors and subcontractors shall be FDOT prequalified in the work classes of drainage, flexible paving, grading, and hot plant–mixed bituminous courses.

1. Bidders must submit with the bid a minimum of five (5) Cape Seal project references from a City or County in the State of Florida that have been completed within the past three (3) years. Bidders may be required to submit detailed information regarding the staff that they propose for this project.

2. The Contractor should have in their possession, in the State of Florida at the time of bidding, two or more aggregate spreaders, two distributors, four truck-mounted machines, and two self-loading machines as described in the equipment section of the specification.

3. Staff shall have the option to inspect the Contractor’s equipment, and if found deficient, it shall be the basis for rejection of Contractor’s bid.

2.3.4 Construction:

A. Layout: The Contractor will be responsible for the string lining and layout of the roadway before paving.

B. Weather and Seasonal limitations: The cape seal treatment shall not be applied to a wet surface or when rain occurs or the threat of rain is present immediately before placement. The surface treatment shall not be applied when the temperature is less than 50 degrees Fahrenheit in the shade. When applying emulsions, the surface temperature shall be a minimum of 55°F, and no more than 140°F.

C. Preparation of Surface: The cape seal material shall be placed on a firm, unyielding prepared roadway. The Contractor shall be responsible for clipping back shoulders and removing overburden or any other vegetation or debris to ensure that the road is free of organic and deleterious material. The contractor will be responsible for blowing or sweeping the road immediately ahead of the chip seal operation to ensure the road is free of loose aggregate and other debris. Remove any thermoplastic striping materials and retro-reflective pavement markers in the areas to be cape sealed. Provide temporary striping as necessary to comply with Contract Documents. If water is used for cleaning, allow any unsealed cracks to dry thoroughly before applying a cape seal. Protect maintenance holes, valve boxes, drop inlets, and other service entrances from the cape seal mixture by a suitable method.

The Engineer will approve the surface preparation before the cape seal.

No loose aggregate, either spilled from the lay-down machine or existing on the road, will be permitted on the final application.

D. Application of bituminous material: Liquid bituminous material shall be applied using a pressure type distributor in a uniform, continuous spread over the section to be treated. The distributor shall be moving forward at the proper speed when the liquid is discharged onto the pavement to provide an even and consistent application at the rate prescribed. If any areas are deficient, the operation shall be stopped and corrected immediately. The liquid shall not be applied more than two hundred feet before the aggregate spreader when the ambient air temperature exceeds 75 degrees or one hundred feet if the air temperature is below 75 degrees.

1. Single Chip Seal: The liquid bituminous material shall be applied at a rate of 0.32 – 0.38 gallons per square yard, depending on the composition of the existing roadbed, surface texture, and the aggregate's size in use.

E. Application of cover Aggregate: Immediately following the spray application of the liquid bituminous material, cover aggregate shall be spread over the liquid material at a rate of 22 – 28 lbs. square yard depending upon the type of road that is being resurfaced.

F. Rolling: Immediately following the first application of the cover material, roll the entire surface with pneumatic rollers. Continue rolling as long as necessary to ensure thorough keying of the cover aggregate into the liquid bituminous material and as far as it is practicable and consistent with the setting of the liquid bituminous material.

G. Sweeping: After rolling the first application of cover aggregate, lightly broom the loose aggregate not to dislodge the aggregate embedded in the liquid. Before the final lift is applied, sweep loose material within 24 to 48 hours after the first application.

H. Application of Final Lift: Pre-wet the surface by fogging ahead of the spreader box with water. Adjust the application rate of the fog spray to suit temperatures, surface texture, humidity, and dryness of the pavement.

The material shall be of the desired consistency upon leaving the mixer.

Carry a sufficient amount of material in all parts of the spreader box at all times so that complete coverage is obtained. Avoid overloading of the spreader box. Do not allow lumping, balling, or unmixed aggregate in the micro surfacing mixture.

Do not leave streaks, such as those caused by oversized aggregate, in the finished surface. If excess streaking develops, stop production until the situation has been corrected. Excessive streaking is defined as more than four drag marks greater than 1/2 inch wide and 4 inches long, or 1 inch wide and 3 inches long, in any 30 yd2 areas. Do not permit transverse ripples or longitudinal streaks of 1/4 inch in depth or greater when measured by placing a 10-foot straight edge over the surface.

I.