SOW_Spec_Drawings_Airfield Asphalt XHZG1602097 V2.pdf

STATEMENT OF WORK

ASPHALT SEAL COAT

PROJECT # XHZG201602097

NOVEMBER 2021

General Requirements:

1. The contractor shall provide all labor, material, tools, equipment and transportation necessary to complete the work identified in this Statement of Work.

2. All debris is to be disposed of off Base with proper documentation in accordance with the waste plan generated by the contractor after the project is awarded.

3. After the waste plan is generated the contractor will be responsible for keeping a log of all debris disposed of off base to include tonnage, volume, and disposal site. This log shall be provided for inspection within 24 hrs on request of the government.

4. Contractor must have a superintendent on site when work is being performed.

a. Superintendent must have a minimum of 5 years of superintendent experience and a minimum of 2 years’ experience supervising work similar to the work being performed.

5. Access and General Protection/Security Policy and Procedures. This standard language is for contractor employees with an area of performance within government controlled installation, facility, or area. The contractor shall comply with all applicable installation/facility access and local security policies and procedures, which may be obtained from the Contracting Officer’s Representative (COR). The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the local installation’s Security Forces, Director of Emergency Services or local Security Office. The contractor shall ensure compliance with all personal identity verification requirements as directed by DoD, HAF and/or local policy. Should the Force Protection Condition (FPCON) change, the Government may require changes in contractor security matters or processes.

a. For Contractors that do not require CAC, but require access to a DoD Facility and/or Installation. Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (AFI 31-101 and AFI 10-245), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative).

6. All contractor employees, to include subcontractor employees, requiring access to Government Installations, Facilities and Controlled Access areas shall complete AT Level I awareness training within 10 calendar days after contract start date or effective date of incorporation of this requirement into the contract, whichever is applicable.

Certificates of completion for each affected contractor employee and subcontractor employee will be submitted to the COR within 10 days after contract start date.

7. All DBIDS Contractor passes will be approved by the BCE and issued by SFS after completion of required background checks. Final payment to the general contractor will not be made at the completion of the construction project until all contractor badges have been returned or the continuing need is validated and documented in writing by SFS and BCE personnel.

8. This project is to be in accordance with the current version of the EMS Environmental Protection Statement. A copy of this document will be provided to bidding contractors via SAM.gov as an attachment.

9. This project is to be in accordance with the current version of the 138FW Safety and Accident Prevention Guide. A copy of this document will be provided to bidding contractors via SAM.gov as an attachment.

10. The contractor shall apply all environmental health and safety procedures required by local, state and federal regulations.

11. All work to be performed 7:00 AM to 5:30 PM Monday thru Thursday in accordance with the general conditions. If alternate work schedule is desired, it must be requested in writing and approved by CE and Security 48 hours prior to the desired schedule.

12. The contractor is required to provide a completed AF Form 103 (Dig Permit) prior to any earthwork. All utilities in the work are must be marked before a Dig Permit will be issued.

13. Prior to any work, the contractor shall submit for approval by COR, one electronic copy of technical literature for all products to be used. Provide Safety Data Sheets for all appropriate products.

14. The contractor shall report ALL contractor labor hours (including subcontractor labor hours) required for performance of services provided under this contract for the Oklahoma National Guard via a secure data collection site. The contractor is required to completely fill in all required data fields using the following web addresses:

http://www.ecmra.mil/ or https://cmra.army.mil/. Reporting inputs will be for the labor executed during the period of performance during each Government fiscal year (FY), which runs October 1 through September 30. Data shall be reported not later than the first to occur of (1) submission of contractor’s final invoice following conclusion of the period of performance or (2) October 31 of each calendar year. Contractors may direct questions to the help desk at help desk at: https://www.ecmra.mil/Login.aspx .

15. The contractor shall maintain a clean work site at all times. All Debris and blasting material must be cleaned up at the end of each work day.

16. Prior to issuance of Notice to Proceed (NTP), the contractor shall submit, and gain government approval, of contractor key personnel, a full submittal register and project schedule.

https://www.ecmra.mil/Login.aspx

a. Contractor key personnel are defined in Para 4 of General Requirements.

b. The Contractor shall use the Critical Path Method (CPM) of network calculation to generate the Project Schedule. The Project Schedule shall be prepared using the Precedence Diagram Method (PDM).

c. The contractor shall use a Work Breakdown Structure (WBS) with reasonable Activity Durations. The WBS should be organized by CLIN.

d. Develop the Project Schedule to an appropriate level of detail. Failure to develop the project Schedule to an appropriate level of detail, as determined by the Contracting Officer, will result in its disapproval.

e. The Contractor shall use the schedule as the basis for determining contract earnings during each update period and therefore the amount of each progress payment. Lack of an approved schedule update, or qualified scheduling personnel, will result in the inability of the Contracting Officer Representative to evaluate contract earned value for the purposes of payment.

Statement of Work

1. Install new asphalt seal coating as shown on Drawing 1 and in accordance with Asphalt Seal Coat and Repair specification, attached. Area is approximately 80,173 square feet.

Contractor is responsible for field verifying dimensions.

a. Install asphalt rejuvenator in area where jet fuel spill has occurred, approximately 1,000 square feet. Location annotated on Drawing 1. Contractor shall field verify with the COR.

2. Option1: Install new asphalt seal coating adjacent to B318 as shown on Drawing 2 and in accordance with Asphalt Seal Coat and Repair specification, attached.

a. Contractor shall restripe the all parking lines in the area where new asphalt seal coat is applied.

3. Option 2: Install new asphalt seal coating at the parking lot north of B240 and drive land west of B240 as shown on Drawing 2 and in accordance with Asphalt Seal Coat and Repair specification, attached.

a. Contractor shall restripe the all parking lines in the area where new asphalt seal coat is applied.

4. Option 3: Build up ground elevation around pavement edge as shown in Drawing 1.

a. Contractor to remove existing sod prior to installing new topsoil, six feet width

(6ft).

b. Install topsoil material and compacted to 90% relative compaction in accordance with ASTM D1557, one inch below existing pavement, area as shown on attached drawing 1, approximately 17,901 square feet. Contractor shall field verify all dimensions.

c. Install new six feet (6ft) wide solid sod Bermuda grass as shown on attached drawing 1, approximately 17,901 square feet. Contractor shall be responsible to water the sod for 30 days following installation.

SECTION 32 01 17.61

PART 1 GENERAL

1.1 UNIT PRICES

1.1.1 Measurement

SEALING CRACKS IN ASPHALT PAVING

05/17

Determine the quantity of each sealing item to be paid for by actual measurement of the number of linear feet of in-place material that has been approved.

1.1.2 Payment

Payment will be made at the contract unit bid prices per linear foot for the sealing items scheduled. Include in the unit bid prices the cost of all labor, materials, and the use of all equipment and tools required to complete the work.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C509 (2006; R 2015) Elastomeric Cellular Preformed Gasket and Sealing Material

ASTM D6690 (2015) Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements

ASTM D789 (2015) Determination of Relative Viscosity and Moisture Content of Polyamide (PA)

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. When used, a designation following the "G" designation identifies the office that will review the submittal. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Installation of Sealant

SD-04 Samples

ASPHALT SEAL COAT AND REPAIR

XHZG201602097

Materials; G

SD-06 Test Reports

Laboratory Tests

1.4 QUALITY ASSURANCE

Test the crack sealant and backup material, when required, for conformance with the referenced applicable material specification. The materials will be tested by the Contractor. Contractor shall submit samples of the materials 30 days prior to their use on the project. No material will be allowed to be used until it has been approved. If the samples fail to meet specification requirements, replace the materials represented by the sample and test the new materials at the Contractor's expense. Submit reports of all tests. Samples will be retained by the Government for possible future testing, should the materials appear defective during or after application. Furnish samples of materials, in sufficient quantity to be tested upon request. Conformance with the test requirements of the laboratory tests specified will not constitute final acceptance of the materials. Final acceptance will be based on the performance of materials that have been satisfactorily installed.

1.5 DELIVERY, STORAGE, AND HANDLING

Inspect materials delivered to the job site for defects; unload, and store them with a minimum of handling to avoid damage. Provide storage facilities at the job site to protect materials from weather and maintain them at the temperatures recommended by the manufacturer.

1.6 EQUIPMENT, TOOLS, AND MACHINES

Equipment, tools, and machines used in performance of the work are subject to approval by the Contracting Officer. Maintain in a satisfactory working condition at all times.

1.6.1 Routing Equipment

Provide routing equipment which is a self-powered machine operating a power driven tool or bit specifically designed for routing bituminous pavements.

Use a bit rotating about a vertical axis at sufficient speed to cut a smooth vertical-walled reservoir in the pavement surface and maintain accurate cutting without damaging the sides or top edges of the reservoir.

Provide a router capable of following the trace of the crack without deviation. The use of rotary impact routing devices will not be permitted for cleaning cracks.

1.6.2 Concrete Saw

Provide a self-propelled power saw with small diameter ( 6 inches or less) water-cooled diamond or abrasive saw blades for cutting cracks to the depths and widths specified and for removing filler that is embedded in the cracks or adhered to the crack faces. Use a saw blade with a diameter small enough to allow the saw to closely follow the trace of the crack.

1.6.3 Sandblasting Equipment

Include in the sandblasting equipment an air compressor, hose, and long-wearing venturi-type nozzle of proper size, shape and opening. Use a nozzle with a maximum opening not exceeding 1/4 inch. Use air compressors that are portable and capable of furnishing not less than 150 cfm and maintaining a line pressure of not less than 90 psi at the nozzle while in use. Demonstrate compressor capability under job conditions before approval. Equip the compressor with traps that will maintain the compressed air free of oil and water. Use nozzle with an adjustable guide that will hold the nozzle aligned with the crack about 1 inch above the pavement surface. Adjust the height, angle of inclination and the size of the nozzle as necessary to secure satisfactory results.

1.6.4 Waterblasting Equipment

Include with the waterblasting equipment a trailer-mounted water tank, pumps, high-pressure hose, wand with safety release cutoff control, nozzle, and auxiliary water resupply equipment. Use water tank and auxiliary resupply equipment with sufficient capacity to permit continuous operations. Use hoses, wands, and nozzles capable of cleaning the crack faces and the pavement surface on both sides of the crack for a width of at least 1/2 inch beyong the crack. Use pump with a mounted pressure gauge that shows the pressure in psi at which the equipment is operating at all times. Limit the pressure so that the sides of the crack are not damaged during the cleaning operation.

1.6.5 Hand Tools

Hand tools may be used, when approved, for removing defective sealant from cracks and repairing or cleaning the crack faces.

1.6.6 Crack Sealing Equipment

Provide unit applicators, used for heating and installing the hot-poured crack sealant materials, that are mobile and equipped with a double-boiler, agitator-type kettle with an oil medium in the outer space for heat transfer; a direct-connected pressure-type extruding device with a nozzle shaped for inserting in the crack to be filled; positive temperature devices for controlling the temperature of the transfer oil and sealant;

and a recording type thermometer for indicating the temperature of the sealant. Allow the sealant to circulate through the delivery hose and return to the inner kettle when not in use, due to the applicator unit design.

1.7 ENVIRONMENTAL REQUIREMENTS

Apply the materials only when the ambient air temperature and the pavement temperature within the joint wall are at least 50 degrees F and rising.

Do not apply sealant if moisture is observed in the crack.

PART 2 PRODUCTS

2.1 SEALANTS

Provide sealants conforming to ASTM D6690, Type II or ASTM D6690, Type I.

Use sealing materials for sealing cracks in the various paved areas indicated on the drawings as follows:

2.2 BACKER ROD MATERIALS

Provide backer rod material that is a compressible, nonshrinking, nonstaining, nonabsorptive material and nonreactive with the crack sealant. Use backer rod with a melting point temperature of at least 5 degrees F greater than the maximum pouring temperature of the sealant being used, when tested in accordance with ASTM D789. Use material that has a water absorption of not more than 5 percent by weight when tested in accordance with ASTM C509. Use backer rod material that is 25 percent (plus or minus 5 percent) larger in diameter than the nominal width of the crack.

PART 3 EXECUTION

3.1 PREPARATION OF CRACKS

Immediately before the installation of the crack sealant, thoroughly dry and clean the cracks to remove oxidized pavement, loose aggregate and foreign debris. Prepare cracks as follows:

3.1.1 Cracks

3.1.1.1 Hairline Cracks

[Cracks that are less than 1/4 inch wide do not need to be sealed.] [Seal cracks that are less than 1/4 inch wide in accordance with Section [ ].]

3.1.1.2 Small Cracks

Route cracks that are 1/4 to 3/4 inch wide to a nominal width 1/8 inch greater than the existing nominal width and to a depth not less than 3/4 inch, [sandblasted] [waterblasted] [wire brushed] and cleaned and dried using compressed air.

3.1.1.3 Medium Cracks

[Sandblast] [Waterblast] [Wire brush] cracks that are 3/4 to 2 inches wide and clean and dry using compressed air.

3.1.1.4 Large Cracks

Repair cracks that are greater than 2 inches wide using pothole repair techniques instead of sealing.

3.1.2 Existing Sealant Removal

Cut loose the in-place sealant from both crack faces and to a depth shown on the drawings using a concrete saw or hand tools as specified in paragraph EQUIPMENT, TOOLS, AND MACHINES. Remove sealant to a depth sufficient to accommodate any backer rod material that is required to maintain the depth of new sealant to be installed. Prior to further cleaning operations, remove all old loose sealant remaining in the crack opening by blowing with compressed air.

3.1.3 Routing

Perform routing of the cracks using a rotary router with a bit that is at least 1/8 inch wider than the nominal width of the crack to remove all residual old sealant (resealing), oxidized pavement and any loose aggregate in the crack wall.

3.1.4 Sawing

Perform sawing of the cracks using a power-driving concrete saw as specified in paragraph EQUIPMENT, TOOLS, AND MACHINES. Stiffen the blade as necessary with suitable dummy (or used) blades or washers. Immediately following the sawing operation, clean the crack opening using a water jet to remove all saw cuttings and debris.

3.1.5 [Sandblasting][Waterblasing]

[Sandblast][Waterblast] clean the crack faces and the pavement surfaces extending a minimum of 1/2 inch from the crack edges. Use a multiple-pass technique until the surfaces are free of dust, dirt, old sealant residue, or foreign debris that might prevent the sealant material from bonding to the asphalt pavement. After final cleaning and immediately prior to sealing, blow out the cracks with compressed air and leave them completely free of debris and water. Ensure that [sandblasting][waterblasting] does not damage the pavement.

3.1.6 Backer Rod Material

When required, use backer rod material in all cracks that otherwise would require excessive sealant. Insert the backer rod material into the lower portion of the crack. Place the backer rod so that the top of the backer rod is at least 3/4 inch below the top of the pavement. Ensure that the backer rod material is placed at the specified depth and is not stretched or twisted during installation.

3.1.7 Rate of Progress of Crack Preparation

Limit the stages of crack preparation, which include routing, sandblasting of the crack faces, air pressure cleaning and placing of the backer rod material, to only that linear footage that can be sealed during the same day.

3.2 PREPARATION OF SEALANT

Do not heat hot-poured sealants in excess of the safe heating temperature recommended by the manufacturer, as shown on the sealant containers.

Withdraw and waste sealant that has been overheated or subjected to application temperatures for over 4 hours or that has remained in the applicator at the end of the day's operation.

3.3 INSTALLATION OF SEALANT

Submit manufacturer's instructions [14] days prior to the use of the material on the project. Installation of the material will not be allowed until the instructions are received.

3.3.1 Time of Application

Seal cracks immediately following final cleaning and drying of the crack walls and following the placement of the backer rod material (when required). Place sealant only when cracks are dry. Reclean cracks that cannot be sealed under the conditions specified, or when rain interrupts sealing operations, and allow to dry or dry by mechanical means prior to installing the sealant.

3.3.2 Sealing the Crack

Immediately preceding, but not more than 50 feet ahead of the crack sealing operations, perform a final cleaning and drying with compressed air. Fill the cracks from the bottom of reservoir formed by the routing or the top of the backer rod up to [1/8] inch below the pavement surface. Remove excess or spilled sealant from the pavement by approved methods and discard it.

Install the sealant in a manner which prevents the formation of voids and entrapped air. Several passes with the applicator wand may be necessary to obtain the specified sealant depth from the pavement surface. Do not use gravity methods or pouring pots to install the sealant material. Do not permit traffic over newly sealed pavement until authorized by the Contracting Officer. Check cracks frequently to ensure that the newly installed sealant is cured to a tack-free condition within 3 hours.

Immediately notify the Contracting Officer of the location of any sealant that has not cured to a tack-free condition within 3 hours.

3.4 CRACK SEALANT INSTALLATION TEST SECTION

Prior to the cleaning and sealing of the cracks for the entire project, construct a test section at least 200 feet long using the specified materials and approved equipment to demonstrate the proposed sealing of all cracks of the project. Following the completion of the test section and before any other crack is sealed, inspect the test section to determine that the materials and installation meet the requirements specified. If materials or installation do not meet requirements, remove the materials and reclean and reseal the cracks at no cost to the Government. [When the test section meets the requirements, it may be incorporated into the permanent work and paid for at the contract unit price per linear foot for sealing items scheduled. Seal all other cracks in the manner approved and sucessfully completed for sealing the test section.]

3.5 CLEANUP

Upon completion of the project, remove unused materials from the site and leave the pavement in a clean condition.

3.6 QUALITY CONTROL PROVISIONS

3.6.1 Crack Cleaning

Provide quality control provisions during the crack cleaning process to correct improper equipment and cleaning techniques that damage the bituminous pavement in any manner. Cleaned cracks must be approved by the Contracting Officer prior to installation of the crack sealant.

3.6.2 Crack Seal Application Equipment

Inspect the application equipment to ensure conformance to temperature requirements and proper installation. Evidences of bubbling, improper installing, and failing to cure or set will cause to suspend operations until causes of the deficiencies are determined and corrected.

3.6.3 Crack Sealant

Inspect the crack sealant for proper cure and set rating, tack free surface, bonding to the bituminous pavement, cohesive separation within the sealant, reversion to liquid, and entrapped air and voids. Remove sealants exhibiting any of these deficiencies, at any time prior to the final acceptance of the project, and replace as specified herein at no additional cost to the Government.

-- End of Section --

SECTION 32 01 13.63

PART 1 GENERAL

GILSONITE MODIFIED ASPHALT EMULSION SEAL COATS

02/16

1.1 MEASUREMENT AND PAYMENT PROCEDURES

Measure the quantities of gilsonite modified asphalt emulsion and aggregate used in the accepted work and to be paid for, provided that the measured quantities are not more than 10 percent over the test section determined application rate. Any amount of gilsonite modified asphalt emulsion and aggregate more than 10 percent over the test section determined application rate for each application will be deducted from the measured quantities except for irregular areas where hand spraying of the bituminous material and hand spreading of the aggregate is necessary. This contract is Firm Fixed Price.

1.1.1 Gilsonite Seal Coat Measurement Methods

The area of applied emulsion and aggregate to be paid for will be measured in square yards.

1.1.2 Payment

The approximate amounts of materials per square yard for gilsonite modified asphalt emulsion and aggregate used in production must be as provided in Table 6 for the treatment area[s] at the specified dilution rate[s] as noted. The actual application rates will vary within the range specified to suit field conditions and will be recommended by the manufacturer's representative and approved by the Contracting Officer from test areas and sections evaluated. This contract is Firm Fixed Price

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C117 (2017) Standard Test Method for Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing

ASTM C136/C136M (2014) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM D5 (2006; E 2006) Penetration of Bituminous Materials

ASTM D75/D75M (2014) Standard Practice for Sampling Aggregates

ASTM D140/D140M (2016) Standard Practice for Sampling Asphalt Materials

ASTM D244 (2009; R 2017) Standard Test Methods and Practices for Emulsified Asphalts

ASTM D1474/D1474M (2013) Standard Test Method for Indentation Hardness of Organic Coatings

ASTM D2007 (2011) Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method

ASTM D2042 (2015) Standard Test Method for Solubility of Asphalt Materials in Trichloroethylene

ASTM D2995 (1999; R 2009) Determining Application Rate of Bituminous Distributors

ASTM D4402/D4402M (2015) Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer

U.S. FEDERAL AVIATION ADMINISTRATION (FAA)

FAA AC 150/5320-12 (1997, Rev C; Change 1-3, 5 and 6) Measurement, Construction and Maintenance of Skid-Resistant Airport Pavement Surfaces

U.S. FEDERAL HIGHWAY ADMINISTRATION (FHWA)

MUTCD (2015) Manual on Uniform Traffic Control Devices

1.3 SYSTEM DESCRIPTION

1.3.1 Equipment, Plant and Tools

Equipment, plant and tools used in the work are subject to Government approval and must be maintained in a satisfactory working condition at all times. Provide equipment which is adequate and has the capability of producing the results specified. Provide calibrated equipment, such as asphalt distributors, spreaders and similar equipment, that has been recalibrated by an approved calibration laboratory within 12 months prior to commencing work and every 6 months thereafter, by such laboratory from the date of recalibration, during the term of the contract. Submit an equipment list with calibration reports.

1.3.2 Asphalt Distributors

The emulsion must be applied with an equipment manufacturer-approved computer rate-controlled bituminous distributor. The equipment must be in good working order and contain no contaminants or diluents in the tank when product to be applied is added to the tank. Spreader bar tips must be clean, free of burrs, and of a size to maintain an even distribution of the emulsion. Any type of tip or pressure source is suitable that will maintain predetermined flow rates and constant pressure during the application process with application speeds under eight miles per hour or

700 feet per minute. Test the equipment under pressure for leaks and to ensure it is in good working order before use.

The distributor truck must be equipped with a 12 foot, minimum, spreader bar with individual nozzle control. The distributor truck must be capable of specific application rates in the range of 0.05 to 0.25 gallons per square yard. These rates must be computer-controlled rather than mechanical. The distributor truck must have an easily accessible thermometer that constantly monitors the temperature of the emulsion.

In the event of a temperature problem with the material, a distributor truck will be provided that is equipped to effectively heat and mix the material to the required temperature prior to application. Heating and mixing will be done in accordance with the manufacturer's recommendations.

Care must be taken not to overheat or over mix the material.

The distributor must be equipped to hand spray the emulsion in areas identified either on the plans or by the Contracting Officer.

1.3.3 Aggregate Spreader

The asphalt distributor truck will be equipped with an aggregate spreader that can apply sand to the emulsion in a single pass operation without driving through wet emulsion. The aggregate spreader must be equipped with a variable control system capable of uniformly distributing the sand at the specified rate at varying application widths and speeds. Spinner type equipment will be acceptable. The sander must have a minimum hopper capacity of at least 3,000 pounds of sand. Push-type hand sanders will be allowed for use around lights, signs and other obstructions.

1.3.4 Power Brooms and Power Blowers

A power broom or blower must be provided for removing loose material from the surface to be treated.

1.3.5 Vacuum Sweepers

Provide self-propelled, vacuum pickup sweepers capable of removing loose sand, water, and debris from pavement surface.

1.3.6 Equipment Calibration

For the calibration of the aggregate spreader, only option b. is permitted unless aggregate spreader has been calibrated with the same aggregate within the last six months. Equipment calibration for emulsion may be achieved by either one of the two following procedures:

a. First Procedure: Contractor to furnish a State Calibration Certification for the asphalt emulsion distributor, from any state providing that service, or other acceptable agency certification at the approval of the Contracting Officer, and the calibration date must have been within 6 months of the contract award, or up to 12 months if supporting documents substantiate continuous work using the same distributor.

b. Second Procedure: Furnish all equipment, materials and labor necessary to calibrate the asphalt emulsion distributor and the aggregate spreader.

Perform all calibrations with the approved job materials and prior to applying the specified coatings to the prepared surface. Perform calibration of the asphalt emulsion distributor in accordance with ASTM D2995. Perform work to calibrate the tank and measuring devices of the distributor. Perform inspection and calibration at the beginning of the work and at least once a day during construction.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Contractor Qualifications; G

Provide copies of Qualifications.

Manufacturer Representative’s Experience

Material Performance

Equipment List; G

List of equipment used in the project along with calibration reports.

Friction Test that includes date, time, weather, speed, wet or dry and operator name for each run of each test; G

Inspection Reports; G

Provide reports and all Quality Assurance records daily when application is made.

SD-04 Samples

Gilsonite Modified Asphalt Emulsion

Aggregates

Provide in accordance with Field Quality Control.

SD-06 Test Reports

Manufacturer's Certificate of Compliance for Bituminous Material, Manufacturer's Certificate of Compliance for Aggregates

Recommendation by contractor/manufacturer from results of test section application.

Any additional testing as requested by Contracting Officer

Bituminous Materials; G

1.5 QUALITY ASSURANCE

Provide copies of Contractor Qualifications for applicators, personnel and equipment, Certified by Manufacturer to apply product and to have made three (3) applications similar to this project in past two (2) years.

Include details of previous work, schedule adherence, quality of workmanship, materials and name and work phone of contracting officer's points of contact.

Obtain Manufacturer's Certificate of Compliance for emulsion and aggregates.

Obtain samples at time of delivery to the field as necessary to satisfy the requirements herein.

1.5.1 Manufacturer's Representation

The manufacturer’s representative must have knowledge of the material, procedures, and equipment described in the specification and must be responsible for determining the application rates and must oversee the preparation and application of the seal coat product. Documentation of the manufacturer representative’s experience and knowledge for applying the seal coat product must be furnished to the Contracting Officer a minimum of 10 work days prior to placement of the test sections. The cost of the manufacturer’s representative must be included in the bid price.

1.5.2 Samples

Take aggregate samples for laboratory tests in accordance with ASTM D75/D75M.

Take samples of gilsonite modified asphalt emulsion in accordance with

ASTM D140/D140M.

1.5.3 Aggregates Source

Select sources from which aggregates are to be obtained and notify the Contracting Officer within [30] days after the award of the Contract.

Perform tests for the evaluation of aggregates by using an approved commercial laboratory at no expense to the Government. Tests for determining the suitability of aggregate must include: gradation in accordance with ASTM C136/C136M, and ASTM C117 and must be within the last six months. Independent laboratory testing is required for all new aggregate sources.

1.5.4 Gilsonite Modified Asphalt Emulsion Source

The Contractor must furnish the vendor’s certified test reports for bituminous materials, in its concentrated form, to the Contracting Officer, showing that the material meets the properties of Table 1. Bituminous materials must meet the properties of Table 2 and Table 3.

1.6 DELIVERY, STORAGE, AND HANDLING

Deliver gilsonite modified asphalt emulsion to the site in a homogenous and undamaged condition. Inspect the materials for contamination and damage.

Unload and store the materials with a minimum of handling. Protect stored aggregate from contamination and segregation. Replace defective or damaged materials.

1.7 ENVIRONMENTAL REQUIREMENTS

Apply the coating when the existing surface is dry, and when the weather is not foggy, rainy, or when the wind velocity will prevent the uniform application of the material. Apply gilsonite modified asphalt emulsion seal coat only when both the atmospheric temperature and the pavement surface temperature are above 60 degrees F, unless otherwise directed.

PART 2 PRODUCTS

2.1 GILSONITE MODIFIED ASPHALT EMULSION

The bituminous material must be a gilsonite modified asphalt emulsion. The material must meet the following requirements of the applicable portions of Table 1, 2, and 3.:

Table 1: Concentrated Bituminous Material Properties

Properties Specification Limits

Saybolt Furol Viscosity at 77 deg F

Residue by Distillation or Evaporation

ASTM D244 20-100 seconds

ASTM D244 57 percent minimum

Sieve Test ASTM D244 0.1 percent maximum

24-hour Stability ASTM D244 1 percent maximum

5-day Settlement Test ASTM D244 5.0 pecent maximum

Particle Charge pH, cationic (see Note 1)

ASTM D244 Positive

6.5 percent maximum pH

Note 1: pH may be used in lieu of the particle charge test which is sometimes inconclusive in slow setting, bituminous emulsions.

The bituminous material concentrate must be diluted with heated water prior to application. The bituminous material, when diluted in the volumetric proportion of [one part hot water to one part concentrate] [one part hot water to two parts concentrate] must meet the requirements shown in Table 2.:

Table 2: 1 Part Bitumen : 1 Part Water Dilution Emulstion Properties (see Note 2)

Properties Specification Limits

Saybolt Furol Viscosity at 77 deg F

ASTM D244 10-50 seconds

Residue by Distillation or Evaporation

ASTM D244 28.5 percent minimum

Pumping Stability (see Note 3)

Pass

Table 2: 2 Part Bitumen : 1 Part Water Dilution Emulsion

Properties (see Note 2)

Properties Specification Limits

Saybolt Furol Viscosity at 77 deg F

ASTM D244 10-50 seconds

Residue by Distillation or Evaporation

ASTM D244 38 percent minimum

Pumping Stability (see Note 3)

Pass

Note 2: In ready-to-apply form by volume.

Note 3: Pumping stability is tested by pumping 1 pint of diluted material at 77 deg F,through a 1/4 inch gear pump operation 1,750 rpm for 10 minutes with no significant separation or coagulation.

The bituminous base residue must contain not less than 20 percent uintaite or gilsonite, and must not contain any tall oil pitch or coal tar material. This must be stated in the Manufacturer's Certificate of Compliance for bituminous material. The material must be compatible with asphaltic concrete, and have a 5-year minimum proven performance record at airports with similar climatic conditions. Curing time, under recommended application conditions, must not exceed eight hours.

Table 3: Emulsion Residue by Distillation or Evaporation Tests

Properties Specification Limits

Viscosity at 275 deg F ASTM D4402/D44 1,750 cts maximum

Table 3: Emulsion Residue by Distillation or Evaporation Tests

Properties Specification Limits

Solubility in 1, 1, trichloroethylene

1 ASTM D2042 97.5 minimum

Penetration ASTM D5 50 dmm maximum

Asphaltenes ASTM D2007 15 percent minimum

Saturates ASTM D2007 15 percent maximum

Polar Compounds ASTM D2007 25 percent minimum

Aromatics ASTM D2007 15 percent minimum

The Contractor must furnish vendor's certified test reports showing that the material is the type, grade and quality specified for each load of bituminous material delivered to the project. The certification must also show the shipment number, refinery, consignee, destination, contract number and date of shipment. The test reports and certification must be delivered to the Contracting Officer before permission is granted to use the material. The furnishing of the vendor's certified test report for the bituminous material must not be interpreted as a basis for final acceptance. The manufacturer's material test report certification may be subject to verification by testing the material delivered for use on the project.

The bituminous material storage and handling temperature must be between 50 deg F - 160 deg F and the material must be protected from freezing, or whenever outside temperature drops below 40 deg F for prolonged time periods.

2.2 AGGREGATE

The aggregate material must be a dry, clean, dust and dirt free, sound, durable, angular shaped manufactured specialty sand, such as that used as an abrasive, with a Mohs hardness of 6 to 8. The Contractor must submit manufacturer’s technical data and a manufacturer’s certification indicating that the specialty sand meets the requirements of the specification to the Contracting Officer prior to start of construction. The sand must be approved for use by the Contracting Officer and must meet the following gradation limits when tested in accordance with ASTM C136/C136M and

ASTM C117:

Table 4: Aggregate Material Gradation Requirements

Sieve Size By Weight Min/Max

No. 8 0

No. 16 0-8

No. 30 20-78

No. 50 10-85

No. 100 0-7

No. 200 0-2

The Contractor must submit gradation and manufacturer's specification for review at or prior to the pre bid for approval. The gradations in the chart represent the limits in determining aggregate source suitability for use in the bituminous surface treatment. The final gradations approved, within the limits designated in Table 4, must provide sufficient friction levels to meet the Minimum Friction Level in Table 3-2, "Friction Level Classification for Runway Pavement Surfaces" of FAA AC 150/5320-12.

2.2.1 Material Performance

Friction tests previously performed in accordance with FAA Advisory Circular, FAA AC 150/5320-12, at 40 and 60 mph-wet, must be submitted showing, as a minimum; friction value of pavement surface prior to sealant application; two values, test between 24 and 96 hours after application, with a minimum of 24 hours between tests; and one value test at no less than 90 days or greater than 360 days after the application. The results of the two tests between 24 and 96 hours must indicate friction is increasing at a rate to obtain similar friction value on the 90th day as the orginal friction value, and the long term test must indicate no apparent adverse effect with time relative to friction values and existing pavement surface.

The contractor must submit a list of airports which meet the above requirements, as well as technical details on application rates, aggregate rates, and point of contact at these airports to confirm use and success of sealer with aggregate. Friction tests must be submitted from no less than one of the airports on the list and each set of tests described above, must be from one project.

Seal coat material submittal without required friction performance will not be approved. Friction tests performed on this project, if any, cannot be used as a substitute of this requirement.

2.2.2 MOHS Hardness

MOHS hardness must be within 6-8 in accordance with ASTM D1474/D1474M.

2.3 POLYMER

Vinyl acrylic polymer must be approved for use by the manufacturer of the bituminous material for compatibility and must meet the requirements provided in Table 5:

Table 5: Polymer Properties

Properties Limits

Solids Content 52-57 percent by weight

Weight 8.4-9.4 pounds per gallon pH 4.0 to 6.0

Particle Charge Nonionic/Anionic

Mechanical Stability Excellent

Film Forming Temperature 41 deg F, minimum

Tg 71.6 deg F, maximum

The Contractor must submit manufacturer's specifications for the vinyl acrylic polymer with the bituminous materials submittal for review and approval.

2.4 WATER

Water used in diluting the emulsion must be potable, free from harmful soluble salts and chemicals, and at least 100 deg F.

PART 3 EXECUTION

3.1 PREPARATION OF SURFACE

Provide Inspection Reports of; air and surface temperature during application of seal coat, emulsion temperature and rate of application, dilution rate used, adequacy of surface cleaning and preparation, aggregate rate of application, and protection of site facilities as applicable, each day of application.

Repair and patch all major pavement defects in accordance with [Section 32 01 17.61 SEALING CRACKS IN ASPHALT PAVING][the following subparagraphs]. All cracks sealed with a joint sealant compatible with the emulsion prior to application of the emulsion.

Cracks that are less than 1/4 inch wide do not need to be sealed.

3.1.2 Small Cracks

Cracks that are 1/4 to 3/4 inch wide must be routed to a nominal width 1/8 inch greater than the existing nominal width and to a depth not less than 3/4 inch, waterblasted and cleaned using compressed air.

3.1.3 Medium Cracks

Cracks that are 3/4 to 2 inches wide must be waterblasted and cleaned using compressed air.

3.1.4 Large Cracks

Cracks that are greater than 2 inches wide must be repaired using pothole repair techniques instead of sealing.

Provide a clean surface for the seal coat. If considered necessary by the manufacturer's representative and is approved by the Contracting Officer, flushing with water will be permitted. Water will be made available for the contractor's use from a hydrant location within 10 mile(s) of the project site at prevailing Government rates. The contractor must provide tools, hoses and hauling equipment for providing and dispensing of the water.

Immediately before applying the sealcoat, the asphalt surface to be treated must be free of all dirt, sand, vegetation, loose paint, excessive oil or grease, rubber deposits or other objectionable material. The surface must be cleaned with a power broom or power blower supplemented by hand sweeping or any other means required to remove deleterious matter to the satisfaction of the Contracting Officer.

3.1.6 Weather Limitations

The asphalt emulsion shall be applied only when the existing pavement surface is dry and when the weather is not foggy, rainy, or when the wind velocity will prevent the uniform application of the material. No material shall be applied when dust or sand is blowing or when rain is anticipated within eight hours of application completion. The atmospheric temperature and the pavement surface temperature shall both be above 60 deg F. During application, account for wind drift.

3.1.7 Protection of Site Facilities

Cover existing buildings, structures, runway edge lights, taxiway edge lights, informational signs, retro-reflective marking and in-pavement duct markers as necessary before applying the emulsion. Should emulsion get on any light or marker, clean property promptly. If cleaning is not satisfactory to the Contracting Officer, the Contractor must replace any light, sign or marker with equivalent equipment at no cost to the

3.1.1 Hairline Cracks

3.1.5 Cleaning Operations

Government.

3.2 GILSONITE EMULSION MIXING

The application emulsion must be obtained by blending bituminous material concentrate, polymer and water. Always add heated water to the bituminous material concentrate; never add bituminous material concentrate to heated water. Add one percent polymer, by volume, to the emulsion mix. If the polymer is added to the emulsion mix at the plant, submit weigh scale tickets to the Contracting Officer. As an option, the polymer may be added to the emulsion mix at the job site provided the polymer is added while the circulating pump is running. The mix must be agitated for a minimum of 15 minutes or until the polymer is mixed to the satisfaction of the Contracting Officer.

3.3 QUANTITIES OF MATERIAL PER SQUARE YARD

The approximate amounts of materials per square yard for the bituminous surface treatment must be as provided in Table 6 for the treatment area(s) at the specified dilution rate(s) as noted on the plans. The exact amounts to be used must be determined by the results of the test section program as directed by the Contracting Officer. Pavements with more progressive deterioration issues may require heavier than normal application rates for emulsion and aggregate. In such cases a manufacturer's representative should be consulted as directed by the Contracting Officer.

Table 6: Application Rate

Dilution Rate Gilsonite Modified Asphalt Emulsion gal/yd2

Quantity of Aggregate lbs/yd2

[1:1 Gilsonite Modified Asphalt Emulsion]

[0.10-0.15] [0.20-0.50]

[2:1 Gilsonite Modified Asphalt Emulsion]

[0.08-0.12] [0.20-0.50]

3.3.1 Applicatoin of Gilsonite Modified Asphalt Emulsion

The emulsion must be applied upon the properly prepared, clean and dry surface at the application rate approved by the Contracting Officer for each designated treatment area. The emulsion temperature must be at a temperature at or above 130 deg F, but not exceeding 160 deg F or in accordance with the manufacturer's recommendation using a pressure distributor to obtain uniform distribution at all points.

During all applications, the surfaces of adjacent structures must be protected in such manner as to prevent their being spattered or marred.

Bituminous materials must not be discharged into borrow pits or gutters or upon the airport area.

3.3.2 Application of Aggregate

The emulsion, along with sand at the rate specified for each designated application area must be spread uniformly over the emulsion in a single pass from a sanding attachment to the asphalt distributor. The aggregate must be spread in the same width of application as the bituminous material and must not be applied in such thickness as to cause overspreading.

Sprinkling of additional aggregate material, and spraying additional bituminous material over areas that show up having insufficient cover or bitumen, must be done by hand whenever necessary. In areas where hand work is necessitated, the sand must be applied before the sealant begins to break.

Sanding must be performed in a manner so as to prevent appreciable amounts of sand from going onto any pavement prior to the emulsion being applied.

The Contractor must clean up areas with excess or loose sand and dispose of off airport property.

3.4 TEST SECTIONS AND AREAS

Prior to production seal coating applying the seal coat, place up to 3 test sections at a location determined by the Contracting Officer approximately 50 feet long by a minimum of 8 feet wide in a single pass of equipment using the approved job materials in accordance with the specification requirements, unless noted otherwise. Perform tests to determine the application rates of the asphalt emulsion and aggregate.

Test sections must be performed on pavement areas that are not considered critical to operations. Vary the application rates along the longitudinally along the test section in order to effectively evaluate the pavement absorption rates. If the tests indicate that the seal coat test section does not conform to the specification requirements, make necessary adjustments to the application equipment and to the spreading procedures, and construct additional test sections for conformance to the specifications. Where test sections do not conform to specification requirements, repair or remove seal coat at no expense to the Government;

no separate payment will be made for seal coat materials and labor, either in placement or removal of any test section. Removal of seal coat must be performed only if 500 feet of length or greater on a runway surface do not meet the friction requirements of FAA AC 150/5320-12. Perform quality control sampling and testing during construction as specified in paragraph FIELD QUALITY CONTROL. Test sections must be performed in the presence of the Contracting Officer and the Seal Coat Manufacturer's Representative (SCMR). Notify the Contracting Officer 7 days prior to the planned test section date. The SCMR must recommend to the Contracting Officer application rates of materials used in production seal coating. The Contracting Officer must approve the application rates prior to production seal coating.

A qualified manufacturer's representative must be present in the field to assist the Contractor in applying test areas or test sections to determine the optimum rate of…