32 01 11 52 Rubber Removal.doc

SECTION 32 01 11.52

RUBBER AND PAINT REMOVAL FROM AIRFIELD PAVEMENTS

1.0 GENERAL

1.1 REFERENCES

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

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910

Occupational Safety and Health Standards

42 U.S.C. 6901 Resource Conservation Recovery Act

42 U.S.C. 9601 The Comprehensive Environmental Response, Compensation, and Liability Act

US AIR FORCE CIVIL ENGINEER SUPPORT AGENCY (AFCESA)

Engineering Technical Letter (ETL) 97-17 Guide Specification Paint and Rubber Removal from Roadway and Airfield Pavements

ETL 04-11

Determining the Need for Runway

Rubber Removal

ETL 04-02

Guide Specification/Standard Airfield Marking

Schemes

1.2 COORDINATION AND UNIT PRICES

1.2.1 Coordination:

Work performed under this section shall be coordinated with, and approved by the Contracting Officer. Due to the potential need to shut the airfield runway down to complete this work the contractor, Contracting Office, and Base Project Manager must agree on the dates and hours that work will be occur. It is the contractors responsibility to ensure that the work begins and ends within the agreed to times. This work may involve having to work on weekends or night shifts to meet the runway outage requirements.

1.2.2 Measurement and Payment

Measurement and payment will be by the square yards of rubber or paint removal needed for the work in place. Contractor’s bid price shall include all sweeping required to clean the airfield and/or remove residue. Payment for friction testing will be based on each individual job.

1.3 SUBMITTALS

Government approval is required for submittals with a "GA" designation; submittals having no designation are for information only. The following shall be submitted in accordance with Section 01330 SUBMITTAL PROCEDURES:

SD-06 Test Reports

Friction Test reports

Statement regarding the results of Friction Testing and need to accomplish/extent of rubber removal

SD-08 Manufacturer’s Field Reports/Instructions Rubber and Paint Removal Statements regarding the suitability of materials, personnel, and methods proposed to accomplish the work.

1.4 SCHEDULE

1.4.1 Schedule of Work

Schedule of Work shall be negotiated between the Contracting Officer and the contractor prior to delivery order award. In the event of any emergency, intense operational demands, adverse wind conditions, and other unforeseen difficulties, the contractor may be required to discontinue all work at locations in the aircraft operational area. The contractor shall notify the Contracting Officer or technical representative of any changes prior to the start time of each day's work.

1.4.2 Night Operations

Some work may require performance at night or other hours outside normal duty hours. The contracting officer reserves the right to direct the contractor to perform operations at night as the conditions warrant.

1.5 WEATHER LIMITATIONS

Pavement surface shall be free of snow, ice or slush. Surface temperature shall be at least 40 degrees F and rising at the beginning of operations except those involving shot-blasting or sandblasting for which a lower surface temperature may be approved. Operation shall cease during thunderstorms. Operation shall cease during rainfall except for waterblasting and removal of previously applied chemicals. Waterblasting shall cease where surface water accumulation alters the effectiveness of material removal.

1.6 MAINTENANCE OF TRAFFIC

1.6.1 Operation and Performance

The operation of equipment and the performance of work upon and in the vicinity of airfields shall be coordinated with the Contracting Officer and with the Flight Operations Officer. Neither equipment nor personnel shall use any portion of an airfield without permission of these officers unless the runway is closed. In all cases, verbal communication shall be maintained with the control tower before and during work in the vicinity of the runway. The control tower shall be advised when work is completed.

1.6.2 Emergency Landings and Take-Offs

Emergencies shall take precedence over all Contractor operations. Upon notification from the Control Tower of emergency landing or imminent takeoff, all operations shall be stopped immediately and all personnel and equipment evacuated to an area not utilized for aircraft traffic which is at least 200 feet measured perpendicular to and away from the near edge of the runway. Equipment shall be able to clear the work area within three (3) minutes.

1.6.3 Time Measurement Interruptions

The contractor shall specify on the bid schedule an hourly rate for aircraft interruptions. The time measurement for the interruptions shall begin with the notification to the contractor to leave the runway, and shall end ten (10) minutes after the contractor is notified that the runway may be reoccupied. The contractor, however, will be paid for a minimum of one hour for each interruption. Interruptions longer than one hour shall be calculated on the half hour. One hour and fifteen minutes would be considered a one-hour interruption, and one hour, forty-five minutes would be considered a two-hour interruption.

1.7 RADIO COMMUNICATION

No personnel or equipment will be allowed on the runway until radio contact has been made with the Control Tower and permission is granted by the Control Tower. A radio for this purpose will be made available by the Contracting Officer. The Contractor shall be in contact with the Control Tower at all times during the removal work.

1.8 ENVIRONMENTAL CONDITIONS

Do not perform work when the temperature is below 40 degrees F, during lightning storms, or when the pavement is covered with snow or ice.

1.9 SAFETY

Comply with OSHA 29 CFR 1910. Also, prior to beginning work on the airfield contractor must ensure that contractor personnel receive training on airfield safety and flight line driving from the government. For airfield safety requirements contractor must coordinate with the Airfield Manager, 37 OSS/OSAA, phone – 210-925-5880, at least 14 days prior to beginning work on the airfield. For flight line driving training contractor must contact the Vehicle Control Officer (VCO) for the 37th Civil Engineer Squadron, Lackland Air Force Base, TX at least 14 days prior to beginning work.

1.10 RUBBER REMOVAL EQUIPMENT

1.10.1 Mechanical Rubber Removal Equipment

Mechanical rubber removal equipment includes waterblasting, shot-blasting, sandblasting, or other approved nonchemical systems. Equipment to be used on asphalt or tar concrete shall be controlled to remove rubber accumulations and minimize disturbance to asphalt or tar mixtures. Equipment to be used on Portland cement concretes shall be controlled to remove rubber accumulations and prevent removal of hardened paste from the concrete. Basic hand tools and the following major types of mechanical equipment will be considered acceptable for this project.

1.10.1.1 Waterblasting Equipment

Mobile waterblasting equipment shall be capable of producing a pressurized stream of water that will effectively remove rubber from the pavement surface without significantly damaging the pavement. Water pressure shall be regulated so that substantially all rubber accumulations are removed during execution of the work.

1.10.1.2 Shot-blasting Equipment

Mobile self-propelled shot-blasting equipment shall be capable of producing an adjustable depth of rubber removal. The equipment shall be capable of propelling abrasive particles at high velocities on the rubber for effective removal. Each unit shall be self-cleaning and self contained. The equipment shall be able to confine the abrasive, any dust that is produced, and removed rubber; and shall be capable of recycling the abrasive for reuse.

1.10.1.3 Sandblasting Equipment

Mobile sandblasting equipment shall be capable of producing a pressurized stream of sand and air that will effectively remove rubber from the pavement surface without filling voids with debris in asphalt or tar pavements or removing joint sealants in Portland cement concrete pavements. The equipment shall include an air compressor, hoses, and nozzles of adequate size and capacity for removing all rubber. The compressor shall be equipped with traps that will maintain the compressed air free of oil and water, and shall be capable of furnishing a flow rate of at least 150 cubic feet per minute of air at a pressure of at least (90 pounds per square inch at each nozzle.

1.10.2 Chemical Rubber Removal Equipment

Chemical equipment shall be capable of application and removal of chemicals from the pavement surface and shall leave only non-toxic biodegradable residue.

1.10.3 Friction Testing Equipment

Friction testing equipment must be continuous friction measuring equipment (CFME), either self-contained or towed meeting the requirements stipulated in Attachment 1, AFCESA ETL 02-14.

1.11 DELIVERY AND STORAGE

Materials that are required in the approved rubber or paint removal process shall be delivered in original manufacturer's containers and shall be labeled with appropriate EPA, OSHA, or other agency warnings, if applicable. Materials shall be protected from the environment until their use is required during execution of the work.

1.12 Compliance with Regulations

The Contractor shall ensure that any rubber and paint removal process is conducted in strict compliance with all local, state, and Federal environmental statutes and regulations, including, but not limited to, regulations promulgated under the Resource Conservation Recovery Act, 42 U.S.C. 6901, et seq., and the Comprehensive Environmental Response, Compensation, and Liability Act, 42 U.S.C. 9601, et seq. Friction testing must be accomplished in accordance with AFESCA ETL 02-14.

1.13 Pavement Damage Survey

The technical representative and the Contractor shall jointly inspect the work area before work commences. Any existing damage to the pavement systems shall be documented at that time. Additional damage caused by the contractor during work performance shall be repaired at no additional cost to the Government.

2.0 PRODUCTS

2.1 MATERIALS

Water to be used for high-pressure water equipment will be made available from Government hydrant[s] at no cost to the Contractor. Contractor shall install a gate valve and back-flow prevention device on the fire hydrant tap prior to use. Furnish all equipment and labor for delivery of water from the hydrant to the job site. Notify the Contracting Officer on location of fire hydrant[s] to be used and the respective times of use. Connections to a fire hydrant will be subject to the Contracting Officer's inspection and approval.

2.2 EQUIPMENT

Vehicular-mounted hydraulic system capable of delivering high-pressure water impact upon the pavement surface less or greater than 8,000 pounds per square inch shall be used. If high-pressure water is delivered from a spray bar, the nozzles shall be spaced to provide total coverage of the area being treated. The nozzle line shall have adjustable pressure regulators or relief valves and gauges measuring actual line pressure. Equipment shall be supported on pneumatic tires. Provide equipment, tools, and machinery that are safe and in satisfactory condition at all times. CFME must be self-contained or towed equipment meeting the requirements stipulated in AFCESA ETL 02-14.

3.0 EXECUTION

3.1 RUBBER & PAINT REMOVAL

The pavement surface is concrete. Chemical methods, if used, shall be compatible with pavement materials, the environment and working personnel. Use of any chemicals or impact abrasive in the removal process must be approved in advance by the Contracting Officer. The Government specifically reserves the right to reject the use of any rubber removal process. Close control of water pressure and blasting time/duration shall be used to prevent disintegration damage to pavements. The Contractor shall demonstrate the ability to remove rubber at a touchdown area of the runway selected by the Contracting Officer; at least one site per runway will be chosen. Rubber removal shall be as complete as possible without damage to the pavement surface. The surface texture of the cleaned demonstration area will be compared to that of non-rubber traffic areas to determine satisfactory completion of the removal operation. After approval of the Contractor's operations the cleaned area will become the standard for rubber removal and final surface texture for the remainder of work.

3.2 DEGREE OF REMOVAL

As specified in AFCESA ETL 97-17 each designated work area for rubber or paint removal shall comply with the 85 percent removal from 100 percent. Each area shall be evaluated independently. Area is evaluated by surface deposits of rubber or paint buildup that can be removed by scratching the deposit with a flat sharp object without damaging the pavement surface. Stains are materials in the pavement surface micro-texture that cannot be removed without damaging the pavement surface. The contractor is not responsible for stain removal. An area not meeting the 85 percent removal requirement shall be cleaned by the Contractor at the Contractor’s expense.

3.3 WATER PRESSURE

Provide water pressure impact upon the indicated pavement areas sufficient to remove the designated rubber and paint to the required degree of removal without damaging the existing pavement joint sealant, and other airfield appurtenances. Damages caused by the contractor beyond normal work performance during work performance shall be repaired at no additional cost to the Government.

3.4 CLEANUP AND WASTE DISPOSAL

The worksite shall be kept clean of debris, waste, and by products generated by the rubber or paint removal operations. Residue will be removed from the pavement by contractor-furnished sweepers and personnel. The contractor shall remove from the airfield debris, waste, and by-products generated by the rubber and paint removal operations and shall dispose of these wastes in compliance with all applicable state, local, and Federal environmental statutes and regulations, including, but not limited to, regulations promulgated under the Resource Conservation Recovery Act, 42 U.S.C. 6901, et seq., and the Comprehensive Environmental Response, Compensation, and Liability Act, 42 U.S.C. 9601, et seq

3.5 FRICTION TEST - DETERMINING THE NEED FOR RUNWAY RUBBER REMOVAL

At the discretion of the government, the contractor may be required to conduct a friction test prior to rubber removal to determine the need for or extent of rubber removal. Unless otherwise specified and approved by the government the test is to be accomplished in accordance with the requirements stipulated in AFCESA ETL 02-14, using continuous friction measuring equipment. ETL 02-14 provides the minimum requirement for rubber removal. Note that factors other than friction may drive the need for rubber removal, such as the obscuring of airfield markings by excess rubber buildup, or the need for a clean surface before remarking. Unless otherwise directed the contractor is to submit a written report providing the test results prior to further action being accomplished on removal of rubber/paint on the runway. The government may require the friction test be conducted either before and/or after runway rubber removal is accomplished. Payment is to be made for each individual test conducted.

SECTION 32 01 11.52 Page 6 of 6