Historic Preservation - Technical Procedures
Guidelines For Reducing Air Concentrations Of Asbestos During Abatement Work
Federal Building, Wausau, Wi - Gsa - Chicago, Il
Hazardous Material Abatement
Guidelines For Reducing Air Concentrations Of Asbestos During Abatement Work
GUIDELINES FOR REDUCING AIR CONCENTRATIONS OF ASBESTOS DURING
A. This procedure includes guidance on work necessary to
reduce air concentrations of asbestos to the specified
level and maintain the specified asbestos control limits.
See also 02080-01-R for general asbestos abatement
procedures. For specific guidance in removing vinyl
asbestos tile or asbestos-containing light ballasts, see
02080-02-R and 02080-03-R respectively.
B. See 01100-07-S for general project guidelines to be
reviewed along with this procedure. These guidelines
cover the following sections:
1. Safety Precautions
2. Historic Structures Precautions
4. Quality Assurance
5. Delivery, Storage and Handling
6. Project/Site Conditions
7. Sequencing and Scheduling
8. General Protection (Surface and Surrounding)
These guidelines should be reviewed prior to performing
this procedure and should be followed, when applicable,
along with recommendations from the Regional Historic
Preservation Officer (RHPO).
A. American National Standards Institute, Inc. (ANSI), 1430
Broadway, New York, NY 10018.
1. Z9.2-79 Fundamentals Governing the Design and
Operation of Local Exhaust Systems.
B. American Society for Testing and Materials (ASTM), 100
Barr Drive, West Conshohocken, PA 19428, (610) 832-9585
or FAX (610) 832-9555.
1. E 849-82 Safety and Health Requirements relating to
Occupational Exposure to Asbestos.
C. Code of Federal Regulations (CFR):(Available from the
Government Printing Office), North Capitol Street between
G and H Streets, NW, Washington, DC 20402.
1. 29 CFR 1910.100, Occupational Safety and Health Act
2. 29 CFR 1910.20, Subpart C, General Safety and
3. 29 CFR 1910.134, OSHA Respirator Requirements.
4. CFR, Parts 230 and 231, Appendix B and C,
Procedures for Containing and Removing Building
Materials Containing Asbestos: Federal Register,
Volume 45, No. 182, Page 61961, September 17, 1980.
5. 40 CFR 61, Subparts A, B and M: U.S. Environmental
Protection Agency Regulations for Asbestos.
6. 40 CFR 260-265: U.S. Environmental Protection
Agency Regulations implementing the Resource
Conservation and Recovery Act.
7. State and Local Regulations: The Contractor shall
conform to all State and local regulations. If
there is a conflict between regulations (Federal,
State or local), the most stringent requirement
A. Submit prior to beginning work. Do not commence work
until the following have been approved.
B. Plan of Action: Submit a detailed plan of the procedures
proposed for use in complying with the regulations
included in this specification. The plan shall include
the location and layout of decontamination areas, the
sequencing of asbestos work, the interface of trades
involved in the performance of work, methods to be used
to assure the safety of building occupants and visitors
to the site, disposal plan including location of approved
disposal site, and a detailed description of the methods
to be employed to control pollution. Expand upon the use
of portable HEPA ventilation system, closing out of the
building s HVAC system, method of removal to prohibit
visible emissions in work area, and packaging of removed
asbestos debris. The plan must be approved by the
Contracting Officer prior to commencement of work.
C. Contractor Qualification Information: Approval by the
Contracting Officer is required of the following
submittals, which shall be submitted immediately after
award of contract:
1. Name and location of at least 5 asbestos abatement
projects performed by the Contractor, including
name and telephone number of contract
representative. Include the dollar value of the
abatement contract, the number of abatement workers
used and the type of work performed.
2. Copy of daily log and air monitoring reports
including final decontamination levels of last five
3. Name of and experience record of superintendent and
foreperson. Include evidence of knowledge of
applicable regulations; evidence of participation
and successful completion of EPA-approved training
course in asbestos removal and/or supervision of
asbestos related work; and experience with asbestos
related work in a supervisory position as evidenced
through supervision of at least two asbestos
4. Name and experience record of workers who will be
assigned to this project. Include for each person
the location of last two abatement projects, and
evidence of successful completion of in-house
training given qualified superintendent or
foreperson, or its equivalent. Provide copy of in-
house training course outline and attendance record
for all employees who will be working on the
5. If the State or municipality in which the work is
to take place requires a certification or license,
D. Laboratory Qualification Information:
1. Submit proof of qualifications of testing
laboratory and personnel. Accreditation by the
American Industrial Hygiene Association (AIHA) for
asbestos work; and certification that person
analyzing the samples have been judged proficient
by successful participation in the National
Institute for Occupational Safety and Health
(NIOSH) Proficiency Analytical Testing (PAT)
Program, shall be considered sufficient proof of
compliance. Submittal must be approved by the
Contracting Officer prior to beginning any testing.
2. Testing laboratory shall be a firm separate from
the abatement contractor. Use of abatement
contractor personnel to conduct air sampling and
monitoring work will not be acceptable.
E. Certificates of Compliance: Submit certification that
vacuums, ventilation equipment, and other equipment
required to contain airborne asbestos fibers conform to
1.04 QUALITY ASSURANCE
A. Contractor Qualifications: The Contractor shall be a firm
of established reputation (or if newly organized, whose
personnel have previously established a reputation in the
same field), which is regularly engaged in, and which
maintains a regular force of workers skilled in asbestos
abatement, one of which will be an independent
professional Industrial Hygienist (CIH Ref. PBS P
50900.2C Ch. 4 Par. 69) who has performed asbestos
abatement on previous projects, and who will be
responsible for supervising inspections, reports,
monitoring daily logs that meet regulatory requirements,
and will be required to follow the requirements of this
specification. See Submittals paragraph for information
which must be submitted and approved.
B. Contractor Responsibility: The Contractor shall assume
full responsibility and liability for compliance with all
applicable Federal, State, and local regulations
pertaining to the protection of workers, visitors to the
site, and persons occupying areas adjacent to the site.
The Contractor is responsible for providing medical
examinations and maintaining medical records of personnel
as required by the applicable Federal, State, and local
regulations, and shall hold the government harmless for
failure to comply with any applicable safety or health
regulation on the part of Contractor, Contractor s
employees, or subcontractors.
C. Laboratory Qualifications: Laboratory shall be regularly
engaged in asbestos testing, and personnel used for
monitoring airborne concentrations of asbestos fibers
shall be proficient in this field. See Submittals
paragraph for information which must be submitted and
D. Asbestos Control Limits:
1. Inside Asbestos Work Area: Air concentrations of
asbestos shall not exceed an 8-hour time weighted
average of 0.2 fibers (longer than 5 microns), per
cubic centimeter of air and shall not exceed at any
time the ceiling level of 10 fibers (longer than 5
micrometers) per cubic centimeter of air. See 29
CFR 1910.1001. See evaluation regarding above
2. Outside Asbestos Work Area: Air concentrations of
asbestos shall be maintained at 8-hour time
weighted average below 0.01 fibers (longer than 5
microns) per cubic centimeter of air. This applies
to all areas in the building while work is in
progress except for the asbestos work area, and to
the entire building including the former work area,
after final clean-up.
E. Field Quality Control Monitoring:
1. Monitoring of airborne concentrations of asbestos
shall be in accordance with 29 CFR 1910.1001 and
ASTM E 849. Monitor the airborne concentration of
asbestos before starting work to obtain a baseline
fiber concentration in the affected areas. Then
monitor once every four hours, continuously during
the course of the work inside the asbestos work
area, outside the entrance to the asbestos work
area and at the exhaust opening of the local
exhaust system. If monitoring show airborne
concentrations greater than the asbestos control
limits, stop all work, correct the conditions
causing the excessive levels, and notify the
Contracting Officer immediately. In addition,
monitor the airborne concentrations of asbestos
after final clean-up and removal of the enclosure
of the asbestos control area in accordance with
paragraph Field Clean-up and Removal of
F. Field Quality Control Site Inspection: While performing
asbestos abatement work, the contractor shall be subject
to on-site inspection by agency officials. Work shall
also be subject to inspection by OSHA and EPA inspectors
and/or local building or health officials. If found to be
in violation of 29 CFR 1910.1001, the Contractor shall
cease all work immediately and until the violation is
resolved. Standby time required to resolve the violation
shall be at the Contractor s expense. One complete set of
equipment (such as respirators and disposable clothing)
required for entry to the asbestos control area shall be
made available within 2 hours of request by the
Contracting for inspection of the asbestos control area.
Such requests will only be made during working hours.
1.05 PROJECT/SITE CONDITIONS
A. Means of Egress: Establish and maintain emergency and
fire exits from the work area.
B. Use of Existing Facilities:
1. The use of showers, toilets and/or similar
facilities for decontamination areas is strictly
2. The use of existing facilities shall be coordinated
with the Director of Facilities with reference to
maintaining normal building work schedules.
1.07 SEQUENCING AND SCHEDULING
A. Coordinate the work of all trades to assure that their
work is performed in accordance with the applicable
regulations and that the asbestos control limits are
maintained at all times both inside and outside the
asbestos work area.
A. Equipment, including protective clothing and respirators,
used in the execution of this contract and provided to
visitors to the site, shall comply with ASTM E 849 and
with the applicable Federal, State, and local
regulations. Respirators shall conform to the OSHA
requirements in 29 CFR 1910.134. Use supplied air type
(type C ) units during actual removal operations.
1. Isolate the work area for the duration of the work
by completely sealing off all openings and fixtures
in the work area, including but not limited to,
heating and ventilation ducts, doorways, corridors,
windows, and lighting with plastic sheeting taped
securely in place.
2. Build double barriers of plastic sheeting at all
entrances and exits to the work area so that the
work area is always closed off by one barrier when
workers enter or exit.
1. Cover all floors and wall surfaces in the work area
with plastic sheeting taped securely in place to
protect from damage.
2. Before the work is begun, clean all removable items
and equipment. Remove them from the work area and
store as directed.
3. Cover all nonremovable items and equipment in the
work area with plastic sheeting taped securely in
4. Remove all heating, ventilation, and air-
conditioning system filters, pack them in sealable
plastic bags (6-mil minimum) for disposal in the
approved waste disposal site and replace them with
E. Post warning signs and labels as required by 29 CFR
1910.1001, ASTM E 849, and as directed by the Contracting
3.02 ERECTION, INSTALLATION, APPLICATION
A. General Procedures: Perform all asbestos related work and
comply with the general safety and health provisions in
conformance with 29 CFR 1910.1001 and 29 CFR 1910.20,
respectively. For asbestos abatement work, use general
work practices, work practices for removal, and work
practices for encapsulation as specified in 34 CFR Part
231, Appendix C, ASTM E 849, and other appropriate work
procedures approved by the Environmental Protection
B. Local Exhaust System: Provide a local exhaust system in
the asbestos control area as required to meet the
asbestos control limit and ceiling concentration. The
local exhaust system shall be in accordance with ANSI
Z9.2, using High Efficiency Particulate Air (HEPA)
filters. Equip exhaust openings with the necessary
filters required to reduce the airborne asbestos
concentration to below the asbestos control limit. Local
exhaust equipment must be sufficient to maintain a
negative air pressure in the asbestos control area. In no
case shall the building ventilation system be used as the
local exhaust system for the asbestos control limit.
Filtering in vacuums and exhaust equipment shall conform
to ANSI Z9.2.
C. Clean-up and Disposal:
1. Permits and Notifications: Secure necessary permits
in conjunction with asbestos removal, hauling and
disposition and provide timely notification of such
actions, as may be required by Federal, State,
regional and local authorities. Notify the Regional
Office of the Environmental Protection Agency (EPA)
and provide copies of the notification to the
Contracting Officer twenty (20) days prior to the
commencement of the work. Provide notification in
accordance with 40 CFR 61.22(d)(1).
2. Housekeeping: Essential parts of an asbestos dust
control are housekeeping and cleanup procedures.
Maintain all surfaces throughout the area free of
accumulations of asbestos fibers to prevent further
dispersion. Give meticulous attention to
restricting the spread of dust and debris, keep
waste from being distributed over the general area
or to lower floors. Use approved industrial vacuum
cleaners with a HEPA filter to collect dust and
small scraps. The blowing down of the space with
compressed air is forbidden. Post appropriate
asbestos hazard warning signs. In all possible
instances workers shall clean up their own areas.
Equip personnel engaged in cleaning up asbestos
scraps and waste with necessary respiratory
equipment and protective clothing. When cleanup is
completed, monitor the asbestos airborne
concentration of the areas as specified herein and
certify the area as safe before the signs are
removed. Notify the Contracting Officer before
unrestricted entry is permitted. The Government
shall have the option to perform monitoring to
certify the areas are safe before entry is
3. Disposal of Friable Asbestos: Collect and dispose
of friable asbestos waste, scraps, debris, bags,
containers, equipment and asbestos-contaminated
clothing which may produce airborne concentrations
of asbestos fibers in sealed impermeable bags.
Prior to placing in bags, or containers, wet down
asbestos wastes to reduce airborne concentrations.
Waste asbestos material shall be disposed of in
accordance with all Federal regulations at a
sanitary landfill that meets EPA requirements.
Establish a temporary holding area approved by the
Contracting Officer for properly packaged asbestos
4. Final Cleanup and Removal of Enclosure: The
Contracting Officer or designated representative
will inspect the work area prior to decontamination
and removal of enclosure. Visual observation of
asbestos materials, dust or debris is not permitted
on any surface in or around the work area. Clean
work area in accordance with EPA-approved methods,
then perform air sampling for clearance purposes.
Perform sampling in an aggressive manner, using
fans or similar equipment to create exaggerated air
movement during the clearance air sampling. Repeat
the process until fiber concentration level reaches
0.01 f/cc or the level recommended by EPA. Then
wait 24 hours and repeat air sampling process
again. If fiber concentration does not exceed 0.01
f/cc or the level recommended by EPA, the
Contracting Officer or designated representative
may authorize removal of the enclosure. Contracting
Officer approval of final cleaning and restoration
of the work area is required.
END OF SECTION