028200_-_Asbestos_Abatement_2015-03-14.pdf

NEW HAMPSHIRE AIR NATIONAL GUARD HEADQUARTERS 157

TH

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PEASE AIR NATIONAL GUARD BASE, NEW HAMPSHIRE

KC-46A ADAL FUEL CELL, BUILDING 253 TYPE B3 SUBMISSION PROJECT NO. SZCQ139901

ASBESTOS ABATEMENT 028200 - 1

SECTION 02 82 00 – ASBESTOS ABATEMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Furnish all labor, equipment, materials, and services necessary to remove, transport and dispose of asbestos containing materials in preparation for interior and exterior renovation at Building 253 Fuel Cell Hangar at Pease Air National Guard Base in New Hampshire.

B. It is the intent of this contract to remove asbestos containing materials to allow for interior demolition, renovation, roof replacement, and an addition. The identified asbestos containing materials and approximate quantities are included in Table 1 on Page 2 of this specification.

C. The work of this Section must be coordinated with the work of Section 028319 LEAD

SAFE WORK PRACTICES, Section 028100 HAZARDOUS AND REGULATED

MATERIAL REMOVAL AND DISPOSAL, and other applicable Sections.

D. The Contractor shall have the opportunity to observe the building and the locations, quantity, and conditions of asbestos containing materials located in the building. The work of this section includes the removal of all materials from the building in order to allow for the proposed renovation and addition.

E. Prepare completion documentation as described in Article 1.10, including executive summary-level content explaining the extent of the asbestos abatement conducted, the procedures used to conduct abatement, the results of monitoring conducted, and the proper disposal of asbestos waste. The documentation will be subject to review and shall indicate an acceptable level of remediation was achieved based on NESHAPs (40 CFR 61), New

Hampshire Code of Administrative Rules ENV-A 1800 Asbestos Management and

Control, and other applicable regulations and standards.

1.2 SUBMITTALS

A. 30 days prior to the commencement of asbestos abatement work, the Contractor shall submit its qualifications for conducting asbestos abatement and resumes of proposed project managers. This submittal shall include a copy of the abatement firm’s Asbestos

Contractor License, the Asbestos Supervisor certification for the Supervisor assigned to the project, the Asbestos Worker certifications for the abatement crew assigned to the project, medical surveillance documentation, and fit test documentation for all asbestos abatement personnel.

B. 30 days prior to the commencement of the asbestos abatement work, the Contractor shall submit an Asbestos Abatement Plan. The plan shall include the specific location and layout of decontamination areas and negative air units; location of lighting and power outlets;

distribution of amended water; the sequencing of asbestos work; detailed schedules by dates, shift times, and work activities during that shift; the interface of trades involved in the performance of work; the name of the selected asbestos waste disposal facility and

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waste hauler; and a detailed description of the methods to be employed to control pollution.

C. 30 days prior to commencement of asbestos abatement work, the Contractor shall submit the name and qualifications of the asbestos waste disposal facility and the asbestos waste hauler.

D. The Contractor shall also provide notification to the United States Environmental

Protection Agency (EPA) as required by 40 CFR 61.145, and to the New Hampshire

Department of Environmental Services (NHDES) and the town health officer as required by the New Hampshire Code of Administrative Rules ENV-A 1803.

1.3 ASBESTOS ABATEMENT

A. The asbestos abatement Contractor shall conduct asbestos abatement in accordance with applicable local, state, and federal regulations to remove asbestos containing materials from the building to allow for interior and exterior demolition and renovation.

B. It is the intent of this specification to remove identified asbestos containing materials in preparation for the interior demolition and renovation of the building in accordance with the National Emissions Standard for Hazardous Air Pollutants (NESHAPs) 40 CFR 61 and applicable New Hampshire regulations.

C. The Contractor shall be responsible for the health and safety of all workers engaged in the asbestos abatement work.

1.4 ASBESTOS ABATEMENT BASE BID

A. The asbestos containing materials listed in Table 1 below are to be removed and disposed of by the asbestos abatement Contractor.

Table 1 – Asbestos Containing Materials to be Removed – Base Bid

Pease Air National Guard Base, New Hampshire – Bldg. 253

Material Description Location Approximate

Quantity Units

Pipe Insulation Hot water supply and return lines, Mezzanine south wall and Hangar Bay west wall

250 LF

Pipe fitting insulation Hot water supply and return lines, Mezzanine south wall and Hangar Bay west wall

50 EA

Gray caulking Sealing small portion of corrugated siding sections located below the roof deck

1,400 SF

Insulating Board Hangar Doors Door Sections EA

B. Asbestos containing pipe insulation on hot water supply and return lines was identified in a previous inspection report, located at the Mezzanine south wall and Hangar Bay west wall. It is assumed approximately 250 linear feet of pipe insulation may be impacted by the proposed demolition. Any potentially impacted pipe insulation shall be removed and disposed of in accordance with this Section and applicable regulations.

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C. Asbestos containing pipe fitting insulation on hot water supply and return lines was identified in a previous inspection report, located at the Mezzanine south wall and Hangar

Bay west wall. It is assumed approximately 50 linear feet of pipe insulation may be impacted by the proposed demolition. Any potentially impacted pipe fitting insulation shall be removed and disposed of in accordance with this Section and applicable regulations.

D. Asbestos containing gray caulking was observed on the small portions of original corrugated siding located just below the roof deck. The asbestos containing gray caulking is seen between the sections of the original metal corrugated siding to seal/adhesive the two segments together. All gray caulking and associated metal corrugated siding, which would be disturbed during renovation, shall be removed as part of the asbestos abatement prior to the start of general construction.

E. Asbestos containing insulation board was identified in the roof on the 1952 building design plans. Asbestos containing insulating board is assumed to remain below existing roofing.

Prior to the start of any general construction activity that may impact the roof, the asbestos containing insulating board and associated roofing shall be removed as part of the asbestos abatement.

1.5 ASBESTOS ABATEMENT OPTIONAL LINE ITEM

A. The asbestos containing materials listed in Table 2 below are to be removed and disposed of by the asbestos abatement Contractor as an Optional Line Item. If the Optional Line

Item is selected by the Contracting Officer, remove the materials listed in Table 2 in addition to those listed in Table 1.

Table 2 – Asbestos Containing Materials to be Removed – Optional Line Item

Pease Air National Guard Base, New Hampshire – Bldg. 253

Material Description Location Approximate

Quantity Units

Roofing materials, grey caulking and insulating board

Corrugated roof sections 29,000 SF

B. Asbestos containing gray caulking was observed on the original roof of the hangar. The asbestos containing gray caulking is seen between the sections of the original metal corrugated roof deck to seal/adhesive the two segments together. All gray caulking and associated metal corrugated roof, which would be disturbed during renovation, shall be removed as part of the asbestos abatement prior to the start of general construction.

C. Asbestos containing insulation board was identified in the roof on the 1952 building design plans. Asbestos containing insulating board is assumed to remain below existing roofing.

If this option is selected, the asbestos containing insulating board and associated roofing shall be removed as part of the asbestos abatement.

1.6 GENERAL APPLICABILITY OF CODES, REGULATIONS AND STANDARDS

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A. Except to the extent that more explicit or more stringent requirements are written directly into the Contract Documents, all applicable codes, regulations, and standards have the same force and effect (and are made part of the contract documents by reference) as if copied directly into the contract documents, or as if published copies are bound within.

B. The Contractor shall assume full responsibility and liability for the compliance with all applicable Federal, State, and local regulations pertaining to work practices and the protection of workers, visitors to the site, and persons occupying areas adjacent to the site.

The Contractor shall hold the Contracting Officer and its representatives harmless for failure to comply with any applicable work, hauling, disposal, safety, health or other regulation on the part of himself, his employees, or his subcontractors.

C. Federal Requirements: Which govern asbestos abatement work or hauling and disposal of asbestos waste materials include the following:

1. U.S. Department of Labor, Occupational Safety and Health Administration, (OSHA) including but not limited to:

a. Asbestos Standard for the Construction Industry

Title 29, Part 1926, Section 1101 of the Code of Federal Regulations

b. Respiratory Protection Standard

Title 29, Part 1910, Section 134 of the Code of Federal Regulations

c. Construction Industry

Title 29, Part 1926, of the Code of Federal Regulations

d. Access to Employee Exposure and Medical Records

Title 29, Part 1910, Section 2 of the Code of Federal Regulations

e. Hazard Communication

Title 29, Part 1910, Section 1200 of the Code of Federal Regulations

f. Specifications for Accident Prevention Signs and Tags

Title 29, Part 1910, Section 145 of the Code of Federal Regulations

2. U.S. Environmental Protection Agency (EPA) including but not limited to:

a. Asbestos Hazard Emergency Response Act

Title 40, Part 763 of the Code of Federal Regulations

b. National Emission Standard for Asbestos

Title 40, Part 61, including Subpart A and Subpart M (Revised Subpart B) of the

Code of Federal Regulations

c. Resource Conservation and Recovery Act

Hazardous Waste Regulation

Title 40, Parts 260-265

3. U.S. Department of Transportation, Title 49, Parts 172 and 173:

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D. State Requirements: Which govern asbestos abatement work or hauling and disposal of asbestos waste materials include the following:

1. New Hampshire Code of Administrative Rules

a. ENV-A 1800 Asbestos Management and Control

b. ENV-SW 900 Management of Certain Wastes

2. New Hampshire Title X Public Health

a. RSA 141-E Asbestos Management and Control

E. Local Requirements: The Contractor shall comply with local requirements which govern asbestos abatement work or hauling and disposal of asbestos waste materials.

F. Reference Guidelines: Which govern asbestos abatement work or hauling and disposal of asbestos waste materials include the following:

1. American National Standards Institute (ANSI)

1430 Broadway

New York, New York 10018

(212) 354-3300

a. Fundamentals Governing the Design and Operation of Local Exhaust Systems, ANSI Publication Z9.2-79

b. Practices for Respiratory Protection, ANSI Publication Z288.2-80

1.7 AVAILABILITY OF TRAINED PERSONNEL

A. The Contractor shall provide a sufficient number of trained, licensed and qualified workers, foremen and superintendents to accomplish the work within the required schedule. No untrained, unlicensed, or non-qualified personnel shall be engaged in the abatement work.

1.8 RESPIRATORY PROTECTION

A. The Contractor shall provide all workers, foremen, superintendents, authorized visitors, and inspectors personally-issued and marked respiratory protective equipment approved by NIOSH and OSHA. When respirators with disposable filters are employed, the

Contractor shall provide sufficient filters for replacement as needed. The Contractor shall provide respirator filters for all workers, foremen, superintendents, authorized visitors, and inspectors. Filters shall be disposed of as asbestos waste.

B. The Contractor shall instruct and train each worker involved in asbestos abatement in proper respiratory use and require that each worker always wear a respirator, properly fitted on the face in the work area from the start of any operation which may cause asbestos fibers to become airborne until the work area is completely decontaminated. The Contractor shall use respiratory protection appropriate for the fiber level encountered in the work place. The respiratory protection provided by the Contractor shall be suitable for the work environment.

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C. Respiratory protection provided by the Contractor shall conform to the most current standards of the American National Standards Institute (ANSI), the National Institute for

Occupational Safety and Health (NIOSH), and the Mine Safety and Health Administration

(MSHA).

D. Initial Exposure Assessment

1. The Contractor shall employ a Competent Person as defined by OSHA to conduct an exposure assessment immediately before, or at the initiation of work to determine expected exposures during the work. For Class I asbestos work, until the Contractor conducts exposure monitoring and documents that workers on the job will not be exposed in excess of the Permissible Exposure Limit (PEL), or otherwise makes a negative exposure assessment, the Contractor shall assume that workers are exposed in excess of the PEL or excursion limit.

E. Respiratory Protection Selection:

1. The Contractor shall provide the appropriate respirator to all workers (and ensure that the employee uses the respirator provided) as specified below:

Airborne Concentration of Asbestos Required Respirator

Not in excess of 1 f/cc (10 X PEL) Half-mask air-purifying respirator equipped with

HEPA filters.

Not in excess of 5 f/cc (50 X PEL) Full face piece air-purifying respirator equipped with HEPA filters.

Not in excess of 10 f/cc (100 X PEL) Any Powered Air Purifying Respirator (PAPR) equipped with high efficiency filters or any supplied air respirator operated in continuous flow mode.

Not in excess of 100 f/cc (1,000 X PEL) Full face piece supplied air respirator operated in pressure demand mode.

Greater than 100 f/cc (1,000 X PEL) or Full face piece supplied air respirator unknown concentration operated in pressure demand mode equipped with an auxiliary positive pressure self-contained breathing apparatus.

2. The Contractor shall provide a half-face air purifying respirator equipped with high efficiency filters whenever a worker performs Class II asbestos abatement where a negative exposure assessment is not produced.

3. The Contractor shall provide a full face powered air purifying respirator (PAPR) for all workers within a regulated area where Class I work is being performed for which a negative assessment has not been produced or if the TWA exposure to asbestos exceeds

1 fiber/cc.

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4. Single-use, disposable respirators shall not be used on the work site.

5. Half- or Full-Face Air Purifying Respirators shall only be worn by personnel when approved by a physician, and after a quantitative or qualitative fit test is performed by an experienced industrial hygienist pursuant to OSHA regulations. Written copies of the results of these fit tests shall be provided to the Contracting Officer before any work activities begin.

F. Respiratory protection as specified herein shall be worn at all times, including preparation of the work areas, loading and unloading of waste containers in the work area or at the transport truck, cleaning of work areas, and performance of glove bag removal work.

G. Facial hair such as beards, long sideburns, and mustaches, which could interfere with the seal of air purifying type respirators, shall not be worn.

H. Respiratory protection maintenance and decontamination procedures shall meet the following requirements:

1. Respiratory protection shall be inspected and decontaminated on a daily shift basis in accordance with OSHA 29 CFR 1910. 134(b).

2. HEPA filters for negative pressure air filtering respirators shall be changed after each shower.

3. Respiratory protection shall be the last piece of worker protection equipment to be removed. Workers must wear respirators in the shower when going through decontamination procedures as stated herein.

4. Powered air-purifying respirator face pieces shall be worn into the shower.

Filter/power pack assemblies shall be decontaminated in accordance with manufacturer’s recommendations.

5. Respirators shall be stored in a dry place and in such a manner that the face piece and exhalation valves are not distorted.

6. Organic solvents shall not be used for washing of respirators.

7. For negative pressure respirators, workers shall perform a positive and negative air pressure fit check each time a respirator is worn. Powered air-purifying respirators shall be tested for adequate flow (using the methods specified by the manufacturer) every four (4) hours of use and each time the worker enters or exits the work area.

Written logs of these tests shall be maintained by the Contractor.

8. The Contractor shall furnish to the Contracting Officer written documentation that each worker is medically approved to wear respirators and has been properly trained in their use, inspection, care, maintenance, and fitting testing pursuant to the Contractor's written Respirator Plan and applicable regulations.

1.9 AIR MONITORING

A. The New Hampshire asbestos regulations require clearance air monitoring to be conducted

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at the completion of an asbestos abatement project. The Contracting Officer will contract with an asbestos consulting firm to provide post-abatement re-occupancy monitoring in accordance with the New Hampshire Code of Administrative Rules ENV-A 1805.09.

B. The Contractor shall perform air monitoring as required to meet OSHA requirements for maintenance of Time-Weighted Average (TWA) fiber counts or airborne concentration of asbestos for types of respiratory protection provided.

1.10 COMPLETION DOCUMENTATION

A. At the completion of the asbestos abatement, the Contractor shall provide a documentation package including certifications, medical surveillance, and fit tests for all personnel involved in the project; copies of all notifications; a summary of abatement procedures used; daily sign in logs; daily supervisor’s logs, waste shipment records indicating receipt of waste by the landfill; air sampling methodology; documentation of post abatement occupancy criteria; and results of OSHA monitoring.

PART 2 – PRODUCTS

2.1 TEMPORARY FACILITIES

A. The Contractor shall provide water and electric service sufficient to perform and complete the work of this Specification. The Contractor shall obtain all necessary permits and approvals to provide temporary power and water. The Contractor shall use qualified tradesmen for installation of temporary services and facilities. The Contractor shall locate temporary services and facilities where they will serve the project adequately and result in minimum interference with the performance of the work. The Contractor shall relocate, modify and extend services and facilities as required during the course of work so as to accommodate the entire work of the project.

B. Water Service: The Contractor shall provide hot and cold water service to the Site. Service shall be sufficient to provide water for abatement and decontamination of workers and equipment. Sufficient hot water for all workers shall be supplied by Contractor at a minimum temperature of 100 degrees F.

1. Temporary Water Service Connection: All connections to the water system shall include backflow protection. Valves shall be temperature and pressure rated for operation of the temperatures and pressures encountered. After completion of use, connections and fittings shall be removed without damage or alteration to existing water piping and equipment.

2. Water Hoses: The Contractor shall use heavy-duty abrasion-resistant hoses with a pressure rating greater than the maximum pressure of the water distribution system to provide water into each work area and to each decontamination unit. The Contractor shall provide temporary water heating equipment, branch piping, showers, shut-off nozzles and equipment. The Contractor shall maintain hose connections and outlet valves in leak proof condition.

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3. Hot Water Heater: The Contractor shall provide a UL rated 40 - 80 gallon electric hot water heater to supply hot water for the decontamination unit shower. The heater shall be activated from 30 amp circuit breaker located within the decontamination unit. The

Contractor shall provide a relief valve compatible with water heater operation, including a relief valve piped to drip pan on the floor. Drip pans shall consist of a 12"

X 12" X 6" deep pan, made of 19 gauge galvanized steel, with handles. Wiring of the hot water heater shall be in compliance with the National Electric Code (NEC), New

Hampshire modifications to the NEC, and UL standards.

C. Electrical Service: The Contractor shall comply with applicable NEC, New Hampshire modifications to the NEC, and UL standard and governing regulations for materials and layout of temporary electric service. The Contractor shall provide a weatherproof, grounded temporary electric power service and distribution system of sufficient size, capacity, and power characteristics to accommodate performance of work during the construction period. Install temporary lighting adequate to provide sufficient illumination for safe work and traffic conditions in every area of work and acceptable to the Contracting

Officer.

1. Temporary Power: Provide service to decontamination unit sub-panel with minimum

60 amp, 2 pole circuit breaker or fused disconnect connected to the main distribution panel. Sub-panel and disconnect shall be sized and equipped to accommodate all electrical equipment required for completion of the work.

2. Provide electrical outlets (and extension cords) in the clean room, equipment room, and at locations inside and outside the work area for the use of the Contracting Officer’s air monitoring firm for air monitoring purposes.

D. Temporary Lighting: The Contractor shall provide sufficient temporary lighting to ensure proper workmanship throughout the work area, by combined use of daylight and portable task lighting. Protect lamps with guard cages or tempered glass enclosures, where fixtures are exposed to breakage by construction operations. Provide exterior fixtures where fixtures are exposed to the weather or moisture.

E. Sanitary Facilities: The Contractor shall provide one self-contained chemical toilet for each ten workers (as a minimum). Toilets shall be located outside the asbestos abatement work areas.

F. Temporary Heating: The Contractor shall provide temporary heat where indicated or needed for performance of the work. Provide temporary heating units that have been tested and labeled by UL, FM or other recognized trade association.

G. Fire Extinguishers: Comply with the applicable recommendation of NFPA Standard 10

"Standard for Portable Fire Extinguishers." Locate fire extinguishers where they are most convenient and effective for their intended purpose, but provide no less than one extinguisher in the corner of each work area, one in each Equipment Room, and one outside each work area in the Clean Room.

2.2 DECONTAMINATION FACILITIES

A. The Contractor shall construct a decontamination facility that is adjacent and connected to

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the regulated area for the decontamination of workers. The decontamination facility shall consist of an equipment room, shower area and clean room in series. The Contractor shall ensure that workers enter and exit the regulated area through the decontamination area.

The Contractor shall provide the following:

1. Equipment Room (Dirty Room): Provide an equipment room with airlocks to the work area and shower room, large enough for all workers to remove and dispose of contaminated protective clothing, and for storage of contaminated Contractor equipment.

2. Shower Room: Provide a completely watertight operational shower to be used for transit by cleanly dressed workers heading for the work area from the clean room, and for showering by workers leaving the work area after undressing in the equipment room. The shower room facilities and size shall be adequate to allow decontamination and thorough washing of all the workers and visitors.

a. Construct room by providing a shower pan and 2 shower walls in a configuration that will cause water running down walls to drip into pan.

Install a freely draining wooden floor in shower pan at elevation of top of pan.

b. Provide shower head with flexible hose and controls.

c. Provide temporary extensions of existing hot and cold water and drainage, as necessary for a complete and operable shower.

d. Provide a soap dish and a continuously adequate supply of soap and maintain in sanitary condition.

e. Arrange so that water from showering does not splash into the clean room or equipment room.

f. Arrange water shut off and drain pump operation controls so that a single individual can shower without assistance from either inside or outside of the work area.

g. The Contractor shall provide 20 micron and 5 micron waste water filters in line to treat decontamination water. Treated water shall be discharged to a sanitary sewer, or stored in a temporary tank for off-site disposal. Change filters daily or more often if necessary. Locate filters inside shower unit so that water lost during filter changes is caught by shower pan. The Contractor shall obtain necessary approvals to discharge or dispose of treated decontamination water.

3. Clean Room: Provide a room that is physically and visually separated from the rest of the building for the purpose of changing into protective clothing. Locate so that access to work area from clean room is through shower room.

a. Require workers to remove all street clothes in this room, dress in clean disposable coveralls, and don respiratory protection equipment. Do not

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allow asbestos contaminated items to enter this room. Require workers to enter this room either from outside the structure dressed in street clothes, or from the showers.

b. Maintain floor of clean room dry and clean at all times. Do not allow overflow water from shower to wet floor in clean room.

c. Damp wipe all surfaces twice after each shift change with a disinfectant solution.

d. Provide a continuously adequate supply of disposable bath towels.

e. The Contractor shall post information with all emergency phone numbers and procedures in the clean room.

B. Construction: Decontamination facilities shall be located in areas acceptable to the

Contracting Officer and as shown on the Contractor’s Asbestos Abatement Plan. The decontamination facility shall be fully lined using two layers of 6-mil opaque polyethylene sheeting at a minimum. The entire floor of the decontamination facility shall be covered with two (2) layers of 6-mil polyethylene sheeting turned up 12-16" on the wall layers.

The upper layer of floor polyethylene sheeting shall be replaced as wear necessitates. The floor of the shower room shall be sealed and maintained watertight at all times. Leaks shall be immediately cleaned up and then the cause repaired. The interior surfaces of the walls, floor, and ceiling shall then be covered with an additional two layers of 6-mil polyethylene sheeting sealed water and airtight with duct tape at all overlapping seams.

C. Air Locks: Shall be constructed by placing three overlapping sheets of plastic over a framed doorway, securing each along the top of the doorway. The first and third sheets shall be secured on one side of the doorway and the middle sheet shall be secured on the other side of the doorway. The distance between doorways must allow enough space for one doorway to be closed before the next doorway is opened (i.e., approximately three (3) feet).

D. Provide heating and HEPA-filtered exhaust ventilation for all decontamination systems so that air flow will be from the clean outside towards the contaminated workspace.

E. Cleaning: The decontamination facility shall be cleaned using a HEPA-filtered vacuum at least once every shift, or more frequently if needed to prevent residue accumulation.

F. Prohibitions: Smoking, drinking, or eating shall not be permitted in the work area, Shower

Room or Equipment Room. Personal equipment such as radios or flashlights shall not be permitted in the work area, Shower Room or Equipment Room unless they can be washed in the shower.

G. The Contractor shall post or have available the following items in each clean room of the worker decontamination facility.

1. A copy of the U.S. Environmental Protection Agency Regulations for Asbestos, 40

CFR 61 Subparts A and M; and a copy of OSHA Asbestos Regulations, 29 CFR 1926.1101;

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2. A copy of the Licensure and Training Requirements for Persons Engaging in Asbestos

Abatement and Consultation Services, RCSA 20-440-1 through 20-440-9.

3. A list of telephone numbers for local hospital, location of hospital and/or emergency squad, local fire department, and the name and telephone number of the Contracting

Officer.

4. A copy of the asbestos abatement Specifications.

5. A copy of the respirator protection program which conforms to the requirements of 29

CFR 1910.134(b).

6. A listing of all employees, by name, social security number and New Hampshire

Asbestos Abatement Worker or Supervisor/Foreperson Certification Number working on the Project.

7. A legible copy of each assigned employee's New Hampshire Asbestos License.

8. A daily sign in/out log which identifies persons by name and New Hampshire Asbestos

Certification Number, who are/were at the site, and the length of the time each spent at the site.

H. A solid, hinged door with a lock shall be installed at the outside entrance to the decontamination facility. Provide a shutter which opens on make-up air inflow and seals on air flow cessation. This door shall be closed and locked whenever the work area is unattended. Two sets of keys for the lock shall be distributed to the Contracting Officer.

I. Ensure that barriers and plastic linings are effectively sealed and taped at all times, and that the Shower Room floor is watertight. Repair damaged barriers, and remedy defects immediately upon discovery. Visually inspect the facility at the beginning of each work period.

J. Maintain emergency and fire exits from the work areas, or establish alternative exits satisfactory to local fire officials and the Contracting Officer. Exits shall be checked daily for exterior blockages or impediments to exiting.

K. Signs: Post an approximately 20 inch by 14 inch manufactured caution sign at each entrance to the work area displaying the following legend with letter sizes and styles of a visibility required by 29 CFR 1926:

DANGER:

ASBESTOS CANCER AND LUNG DISEASE HAZARD

RESPIRATORS AND PROTECTIVE CLOTHING ARE REQUIRED

IN THIS AREA.

Provide spacing between respective lines at least equal to the height of the respective upper line.

L. Equipment and Waste Decontamination Facility – The Contractor shall provide a separate decontamination facility consisting of a serial arrangement of a holding area and wash room for removal of equipment and material from the work area. No person shall enter or

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exit work area through Equipment decontamination facility.

2.3 PERSONNEL PROTECTION AND DECONTAMINATION

A. Protective Clothing

1. Coveralls: Provide disposable full-body coveralls and disposable head covers, and require that they be worn by all workers in the work area. Provide a sufficient number for all required changes, for all workers in the work area.

2. Boots: Provide work boots with non-skid soles, compliant with OSHA requirements for all workers. Work boots used in asbestos abatement shall be dedicated to use in the work area, and shall not be removed from the work area for any reason. Dispose of boots as asbestos contaminated waste at the end of the work or seal in 6-mil polyethylene bags (with labels) for transportation to another work area.

3. Goggles: Provide eye protection (goggles) as required by OSHA for all workers involved in scraping, spraying, or any other activity which may potentially cause eye injury.

4. Gloves: Provide work gloves to all workers and require that they be worn at all times in the work area. Do not remove gloves from work area and dispose of as asbestos-contaminated waste at the end of the work.

5. Hard Hats: Provide hard hats to all workers and authorized visitors and require that they be worn at all times in the work area. Hard hats shall be worn over the hood of the coveralls.

6. Additional Protective Equipment: Respirators, disposable coveralls, head covers, and footwear covers shall be provided by the Contractor for the Contracting Officer, and other authorized visitors who may inspect the job site.

B. Each Time Work Area is Entered: Remove all street clothes in the Changing Room of the

Personnel decontamination unit and put on new disposable coverall, new head cover, and a clean respirator. Proceed through Shower Room to Equipment Room and put on work boots.

C. Decontamination Procedures: All workers shall use the following decontamination procedure as a minimum requirement whenever leaving the work area with a half or full face cartridge type respirator:

1. When exiting area, remove disposable coveralls, disposable head covers, and disposable footwear covers or boots in the Equipment Room.

2. Still wearing respirators, proceed to showers. Showering is mandatory. Care must be taken to follow reasonable procedures in removing the respirator and filters to avoid asbestos fibers while showering. The following procedure is required as a minimum:

3. Thoroughly wet body from neck down.

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4. Wet hair as thoroughly as possible without wetting the respirator filter if using an air purifying type respirator.

5. Take a deep breath, hold it and/or exhale slowly, complete wetting of hair, thoroughly wetting face, respirator and filter (air purifying respirator). While still holding breath, remove respirator and hold it away from face before starting to breathe.

6. Dispose of wet filters from air purifying respirator.

7. Carefully wash face piece of respirator inside and out.

8. Shower completely with soap and water.

9. Rinse thoroughly.

10. Rinse Shower Room walls and floor prior to exit.

11. Proceed from shower to Changing Room and change into street clothes or into new disposable work items.

D. Workers shall NOT eat, drink, smoke, chew gum or tobacco, or use toilet facilities (either existing or temporary) in the work area. To eat, chew, drink or smoke, workers shall follow the procedure described above, and then dress in street clothes before entering the non-work areas of the building.

E. The Contractor shall post written procedures in work place and train all personnel on the procedures for the evacuation of the injured and the handling of potential fires. Provide aid to a seriously injured worker without delay for decontamination. Make provisions to minimize exposure of rescue workers and to minimize spreading of contamination during evacuations and fire procedures.

F. The Contractor shall instruct all employees and workers in the proper care of their personally issued respiratory equipment, including daily maintenance, sanitizing procedures, etc.

G. All respiratory equipment shall be inspected by Contractor's project supervisory personnel at the beginning of each work period, including breaks and lunch periods. Written records of these inspections shall be maintained for review by the Contracting Officer.

2.4 EXPOSURE CONTROLS AND HEPA-FILTERED EXHAUST VENTILATION

A. The Contractor shall install inside each work area, including the Decontamination (and

Waste Transfer) Facilities, portable HEPA-filtered exhaust units to maintain the area under negative air pressure and to reduce and control airborne asbestos fiber concentrations.

Exhaust systems shall be operated twenty-four hours per day at all times from the time the

Contractor establishes a negative pressure environment until air clearance is achieved.

B. Each unit shall be serviced by a dedicated minimum 115V-20A circuit with overload

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device.

C. The exhaust system must be capable of providing: 1) at least four (4) full air changes per hour in each work area; 2) an inward velocity through any openings, including the decontamination facilities, of at least 200 fpm; and 3) a static negative air pressure inside the area of a minimum of 0.02 inches water column.

D. The Contractor shall determine number of units needed to achieve the requirements above.

Capacity of a unit for purposes of this Section is the capacity, in cubic feet per minute with fully loaded filters, (pressure differential which causes loaded filter warning light to come

on) in the machines labeled operating characteristics. Add a minimum of one (1) additional unit as a backup in case of equipment failure or machine shutdown for filter changing.

E. All exhaust air shall pass through HEPA-filters before being discharged to the exterior of a building. The Contractor shall securely install (and seal with caulking) a solid window or door insert with cutouts sized for the exhaust air duct from each HEPA-exhaust unit.

The exterior exhaust discharge point shall be at least 40 feet from a receptor such as an air intake port, louvers, or entrances to the building or an adjoining building.

F. Locate exhaust unit(s) so that makeup air enters work area primarily through decontamination facilities and traverses work area as much as possible. This may be accomplished by positioning the exhaust unit(s) at a maximum distance from the worker access opening or other makeup air sources.

G. If there are multiple sealed areas or partition walls within a work area, the exhaust systems shall be arranged so that air flows from the least to most contaminated area, and to prevent spaces from having poor or dead air movement.

H. Testing the System: Test the negative pressure system before any asbestos-containing material is wetted or removed. After the work area has been prepared, the decontamination facility set up, and the exhaust unit(s) installed, start the unit(s) one at a time. Demonstrate operation and testing of negative pressure system to the Contracting Officer.

Demonstrating and testing the operation of the negative pressure system will include, but not be limited to, the following:

1. Plastic barriers and sheeting move lightly in toward work area.

2. Curtain of decontamination units move lightly in toward work area.

3. There is a noticeable movement of air through the decontamination unit. Use smoke tube to demonstrate air movement from Clean Room to Shower Room, from Shower

Room to Equipment Room, and from Equipment Room to work area.

4. Use a differential pressure meter or manometer to demonstrate a pressure difference of at least 0.02 inches of water across every barrier separating the work area from the balance of the building or outside.

5. The Contracting Officer may use smoke generators to confirm that air flowing through all open areas is directed into the decontamination facilities and isolation barrier, and good air turnover conditions exist within the work area. If deficient air flows are

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reported to the Contractor, the Contractor shall cease work and promptly correct the deficiency.

I. Use of System During Abatement Operations:

1. Start exhaust units before beginning work (before any asbestos-containing material is disturbed). After abatement work has begun, run units continuously to maintain a constant negative pressure until final air clearance of the work area is complete. Do not turn off units at the end of the work shift or when abatement operations temporarily stop.

2. Start abatement work at a location farthest from the exhaust units and proceed toward them. If an electric power failure occurs, immediately stop all abatement work and do not resume until power is restored and exhaust units are operating again.

3. At completion of abatement work, allow exhaust units to run to remove airborne fibers that may have been generated during abatement work and cleanup and to purge the work area with clean makeup air. The units may be required to run for a longer time after decontamination, if dry or only partially wetted asbestos material was encountered during any abatement work.

J. On loss of negative air pressure or electric power, all work activities in an area shall stop immediately and shall not resume until power is restored and the HEPA-exhaust systems are operating again. When power failure or loss of negative pressure lasts, or is expected to last, longer than one hour, and then the following shall occur:

1. The make-up air inlets in the decontamination facilities shall be sealed airtight.

2. The decontamination facilities shall be sealed airtight after the evacuation of all personnel from the work area.

3. All adjacent areas shall be monitored for asbestos fiber concentration upon discovery of, and subsequently throughout, the power failure.

K. Monitoring: Continuously monitor and record pressure differential between the work area and the building outside the work area with a monitoring device incorporating a continuous recorder. Meter shall be equipped with a warning buzzer which will sound if pressure differential drops below 0.02 inches of water. The Contractor shall provide a record of the pressure differential monitoring including date and time to the Contracting Officer.

2.5 MATERIALS, TOOLS, AND EQUIPMENT

A. Negative Air Machines: Supply the required number of asbestos air filtration units to the site in accordance with these specifications. Each unit shall include the following:

1. Cabinet: Constructed of steel or other durable materials able to withstand damage from rough handling and transportation. The width of the cabinet should be less than 30 inches to fit through standard-size doorways. Cabinet shall be factory sealed to prevent asbestos-containing dust from being released during use, transport, or maintenance.

Access to and replacement of all air filters shall be from intake end. Unit shall be mounted on casters or wheels.

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2. Fans: Rate capacity of fan according to useable air-moving capacity under actual operating conditions. Use centrifugal-type fan.

3. HEPA Filters: The final filter shall be the HEPA type. The filter media (folded into closely pleated panels) must be completely sealed on all edges with a structurally rigid frame.

a. A continuous rubber gasket shall be located between the filter and the filter housing to form a tight seal.

b. Each filter shall be individually tested and certified by the manufacturer to have an efficiency of not less than 99.97 percent when challenged with 0.3 um dioctylphthalate (DOP) particles. Testing shall be in accordance with Military Standard Number 282 and Army Instructions

Manual 136-300-175A. Each filter shall bear a UL586 label to indicate ability to perform under specified conditions.

c. Each filter shall be marked with: the name of the manufacturer, serial number, air flow rating, efficiency and resistance, and the direction of test air flow.

4. Pre-filters, which protect the final filter by removing the larger particles, are required to prolong the operating life of the HEPA filter. Two stages of pre-filtration are required. The first-stage pre-filter shall be a low-efficiency type (e.g., for particles 10 um and larger). The second-stage (or intermediate) filter shall have efficiency (e.g., effective for particles down to 5 um). Pre-filters and intermediate filters shall be installed either on or in the intake grid of the unit and held in place with special housings or clamps. Pre-filters shall be checked for accumulation at least twice per shift, and shall be changed as frequently as conditions require, especially during asbestos removal or during times of dust creation.

5. Safety and Warning Devices: The unit shall have an electrical (or mechanical) lockout to prevent fan from operating without a HEPA filter or with a filter installed backwards. Units shall be equipped with automatic shutdown system to stop fan in the event of a major rupture in the HEPA filter or blocked air discharge. Warning lights and audible alarms are required to indicate normal operation, too high a pressure drop across the filters (i.e., filter overloading), and too low of a pressure drop (i.e., major rupture is HEPA filter or obstructed discharge).

6. Flexible hoses (ducts) of sufficient length must be provided to allow the units to discharge outside of buildings (where possible).

7. Electrical components shall be approved by the National Electrical Manufacturers

Association (NEMA) and Underwriter's Laboratories (UL). Each unit shall be equipped with overload protection sized for the equipment. The motor, fan, fan housing, and cabinet shall be grounded.

B. Wetting Materials: The contractor shall use water amended with a surfactant to wet asbestos containing materials prior to disturbance. The surfactant shall be intended for use in asbestos abatement projects. The material must be odorless, non-flammable, non-toxic, REFUELING WING

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non-irritating, and non-carcinogenic. It shall be applied as a mist using a low pressure sprayer recommended by the manufacturer. The Contractor shall use a mixture of surfactant and water which results in wetting of the asbestos containing material and retardation of fiber release during disturbance of the material equal to or greater than that provided by the use of one ounce of a surfactant consisting of 50% polyoxyethylene ester and 50% polyoxyethylene ether mixed with five gallons of water.

C. Encapsulants: The Contractor shall provide penetrating or lock-down type encapsulants specifically designed for the use intended. The material shall not contain organic solvents and be non-flammable, non-toxic, non-irritating, and non-carcinogenic.

D. Polyethylene Sheeting: Provide flame resistant 6 mil polyethylene film that conforms to requirements set forth by the National Fire Protection Association Standard 701, Small

Scale Fire Test for Flame-resistant Textiles and Films. Provide largest size possible to minimize seams.

E. Duct Tape: Provide duct tape in 2" or 3" widths, with an adhesive which is formulated to aggressively stick to sheet polyethylene.

F. Spray Cement: Provide spray adhesive in aerosol cans which is specifically formulated to stick tenaciously to sheet polyethylene.

G. Waste Containers: For asbestos waste, provide 6 mil thick leak-tight polyethylene bags labeled with required EPA, DOT, OSHA labels. If the waste material contains sharp edges or may otherwise puncture polyethylene bags, provide drums or other closed containers for storage, transportation, and disposal.

H. Fans and Leaf Blowers: Provide two leaf blowers and one 20" diameter fan per 10,000 cubic feet of work area volume to be used for aggressive sampling techniques for clearance air testing.

I. Filters: Provide cascaded filter units on drain lines from showers or any other water source carrying asbestos contaminated water from the work area. Provide units with disposable filter elements as indicated below. Connect so that discharged water passes primary filter and output of primary filter passes through secondary filter.

Primary Filter – Capable of filtering particles down to 20 microns in size

Secondary Filter – Capable of filtering particles down to 5 microns in size.

J. Sump Pump: The Contractor shall provide a totally submersible waterproof sump pump with integral float switch. Provide unit sized to pump 2 times the flow capacity of all showers or hoses supplying water to the sump, through the filters specified herein when they are loaded to the extent that replacement is required. Provide unit capable of pumping debris, sand, plaster or other materials washed off during decontamination procedures without damage to mechanism of pump. Adjust float switch so that a minimum of 3" remains between top of liquid and top of sump pan.

K. Warning Signs and Labels - Shall comply with 29 CFR 1926.1101, and all other federal, state, or local codes and regulations.

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L. Ladders or Scaffolds - Shall be OSHA-approved, and be of sufficient dimensions and quantities so that all work surfaces can be easily and safely accessed by representatives of the Contracting Officer. Scaffold joints and ends shall be sealed with tape to prevent incursion of asbestos fibers.

M. Hand Power Tools - Shall be equipped with HEPA-filtered local exhaust ventilation if used to drill, cut into, or otherwise disturb ACM.

N. Pressure-Differential Recorder - Provide air pressure sensing devices equipped with recorders for continuous monitoring of work area pressure differential. Provide sufficient quantities of chart paper and maintain devices until completion of work.

O. Lumber and Plywood - All lumber and plywood used for temporary barriers, platforms, and Decontamination Facilities shall be new and of fire retardant grade to comply with the requirement for a flame spread of 25 or less with no evidence of significant progressive combustion when tested for thirty minutes duration under the Standard Test Method for surface burning characteristics of building materials (ASTM E-84, NFPA 255, UL 723 and

AWPA C-20…