296-62-077 Asbestos, tremolite,
anthophyllite, and actinolite. 296-62-07701 Scope and application. 296-62-07703 Definitions. 296-62-07705 Permissible
exposure limits (PELs). 296-62-07706 Multi-employer
worksites. 296-62-07709 Exposure assessment
and monitoring. 296-62-07711 Regulated areas. 296-62-07712 Requirements
for asbestos activities in construction and shipyard work. 296-62-07713
Methods of compliance for asbestos activities in general industry. 296-62-07715
Respiratory protection. 296-62-07717
Protective work clothing and equipment. 296-62-07719
Hygiene facilities and practices. 296-62-07721
Communication of hazards to employees. 296-62-07722
Employee information and training. 296-62-07723
Housekeeping. 296-62-07725
Medical surveillance. 296-62-07727
Recordkeeping. 296-62-07728
Competent person. 296-62-07733
Appendices. 296-62-07735
Appendix A-WISHA reference method-Mandatory. 296-62-07737
Appendix B-Detailed procedures for asbestos sampling and analysis-Nonmandatory. 296-62-07741
Appendix D-Medical questionnaires-Mandatory. 296-62-07743
Appendix E-Interpretation and classification of chest roentgenograms-Mandatory. 296-62-07745
Appendix F-Work practices and engineering controls for automotive
brake and clutch inspection, disassembly, repair and assembly-Mandatory. 296-62-07747
Appendix G-Substance technical information for asbestos-Nonmandatory. 296-62-07749
Appendix H-Medical surveillance guidelines for asbestos-Nonmandatory. 296-62-07751
Appendix I-Work practice and engineering controls for Class I
asbestos operations-Nonmandatory. 296-62-07753
Appendix J-Polaraized light microscopy of asbestos-Nonmandatory. 296-62-07755
Appendix K-Smoking cessation program information for asbestos,
tremolite, anthopyhyllite, and actinolite-Nonmandatory.
WAC
296-62-077 Asbestos, tremolite, anthophyllite, and actinolite.
(1) WAC
296-62-07701 through 296-62-07753
applies to all occupational exposures to asbestos in all industries
covered by chapter 49.17 RCW, Washington Industrial Safety and
Health Act and chapter 49.26 RCW, Health and Safety--Asbestos.
(2) This part applies to construction work as defined in WAC
296-155-012 except for work involving asbestos-containing
asphalt roof coatings, cements, and mastics. The exception for
roofing materials does not apply to asphalt coated asbestos felting
and similar built-up roofing.
(3) This part applies to ship repairing, shipbuilding and shipbreaking
employments and related employments as defined in WAC
296-304-01001 except for work involving asbestos-containing
asphalt roof coatings, cements, and mastics. The exception for
roofing materials does not apply to asphalt coated asbestos felting
and similar built-up roofing.
Accredited inspector means any person meeting the accreditation
requirements of the Federal Toxic Substance Control Act, Section
206(a)(1) and (3). 15 U.S.C. 2646(a)(1) and (3).
Aggressive method means removal or disturbance of building
material by sanding, abrading, grinding or other method that breaks,
crumbles, or disintegrates intact ACM.
Amended water means water to which surfactant (wetting
agent) has been added to increase the ability of the liquid to
penetrate ACM.
Asbestos includes chrysotile, amosite, crocidolite, tremolite
asbestos, anthophyllite asbestos, actinolite asbestos, and any
of these minerals that have been chemically treated and/or altered.
For purposes of this standard, “asbestos” includes
PACM, as defined below.
Asbestos abatement project means an asbestos project involving
three square feet or three linear feet, or more, of asbestos-containing
material.
Asbestos-containing material (ACM) means any material
containing more than 1% asbestos.
Asbestos project - includes the construction, demolition,
repair, remodeling, maintenance or renovation of any public or
private building or structure, mechanical piping equipment or
system involving the demolition, removal, encapsulation, salvage,
or disposal of material or outdoor activity releasing or likely
to release asbestos fibers into the air.
Authorized person means any person authorized by the employer
and required by work duties to be present in regulated areas.
Building/facility/vessel owner means any legal entity
or person who owns any public or private building, vessel, structure,
facility, or mechanical system or the remnants thereof, including
the agent of such person, but does not include individuals who
work on asbestos projects in their own single-family residences,
no part of which is used for commercial purposes. Also included
is any lessee, who exercises control over management and recordkeeping
functions relating to a building, vessel, and/or facility in which
activities covered by this standard takes place.
Certified asbestos supervisor means an individual certified
by the department under WAC
296-65-012.
Certified asbestos worker means an individual certified
by the department under WAC
296-65-010.
Certified industrial hygienist (CIH) means one certified
in the practice of industrial hygiene by the American Board of
Industrial Hygiene.
Class I asbestos work means activities involving the removal
of thermal system insulation or surfacing ACM/PACM.
Class II asbestos work means activities involving the
removal of ACM which is not thermal system insulation or surfacing
material. This includes, but is not limited to, the removal of
asbestos-containing wallboard, floor tile and sheeting, roofing
and siding shingles, and construction mastics.
Class III asbestos work means repair and maintenance operations
where “ACM,” including TSI and surfacing ACM and PACM,
may be disturbed.
Class IV asbestos work means maintenance and custodial
activities during which employees contact but do not disturb ACM
or PACM and activities to clean up dust, waste and debris resulting
from Class I, II, and III activities.
Clean room means an uncontaminated room having facilities
for the storage of employees' street clothing and uncontaminated
materials and equipment.
Closely resemble means that the major workplace conditions
which have contributed to the levels of historic asbestos exposure,
are no more protective than conditions of the current workplace.
Competent person means, in addition to the definition
in WAC
296-62-07728, one who is capable of identifying existing asbestos,
hazards in the workplace and selecting the appropriate control
strategy for asbestos exposure, who has the authority to take
prompt corrective measures to eliminate them as specified in WAC
296-62-07728. The competent person shall be certified as an
asbestos supervisor in compliance with WAC
296-65-030(3) and 296-65-012
for Class I and Class II work, and for Class III and Class IV
work involving 3 square feet or 3 linear feet or more of asbestos-containing
material. For Class III and Class IV work, involving less than
3 square feet or 3 linear feet, the competent person shall be
trained in an operations and maintenance (O&M) course which
meets the criteria of EPA (40 CFR 763.92(a)(2)).
Critical barrier means one or more layers of plastic sealed
over all openings into a work area or any other similarly placed
physical barrier sufficient to prevent airborne asbestos in a
work area from migrating to an adjacent area.
Decontamination area means an enclosed area adjacent and
connected to the regulated area and consisting of an equipment
room, shower area, and clean room, which is used for the decontamination
of workers, materials, and equipment contaminated with asbestos.
Demolition means the wrecking or taking out of any load-supporting
structural member and any related razing, removing, or stripping
of asbestos products. Where feasible, asbestos-containing materials
shall be removed from all structures prior to the commencement
of any demolition activity as per WAC
296-155-775(9).
Department means the department of labor and industries.
Director means the director of the department of labor
and industries or his/her authorized representative.
Director of NIOSH means the Director, National Institute for
Occupational Safety and Health, U.S. Department of Health and
Human Services, or designee.
Disturb or disturbance refers to activities that disrupt
the matrix of ACM or PACM, crumble or pulverize ACM or PACM, or
generate visible debris from ACM or PACM. This term includes activities
that disrupt the matrix of ACM or PACM, render ACM or PACM friable,
or generate visible debris. Disturbance includes cutting away
small amounts of ACM or PACM, no greater than the amount that
can be contained in one standard size glove bag or waste bag in
order to access a building or vessel component. In no event shall
the amount of ACM or PACM so disturbed exceed that which can be
contained in one glove bag or waste bag which shall not exceed
60 inches in length and width.
Employee exposure means that exposure to airborne asbestos
that would occur if the employee were not using respiratory protective
equipment.
Equipment room (change room) means a contaminated room
located within the decontamination area that is supplied with
impermeable bags or containers for the disposal of contaminated
protective clothing and equipment.
Fiber means a particulate form of asbestos, five micrometers
or longer, with a length-to-diameter ratio of at least three to
one.
Glove bag means not more than a 60 x 60 inch impervious
plastic bag-like enclosure affixed around an asbestos-containing
material, with glove-like appendages through which material and
tools may be handled.
High-efficiency particulate air (HEPA) filter means a
filter capable of trapping and retaining at least 99.97 percent
of all monodispersed particles of 0.3 micrometers mean aerodynamic
diameter or larger.
Homogeneous area means an area of surfacing material or
thermal system insulation that is uniform in color and texture.
Industrial hygienist means a professional qualified by
education, training, and experience to anticipate, recognize,
evaluate and develop controls for occupational health hazards.
Intact means that the ACM has not crumbled, been pulverized,
or otherwise deteriorated so that the asbestos is no longer likely
to be bound with its matrix. Friable ACM that is disturbed, as
defined in this part, is presumed to be no longer intact.
Modification for the purpose of WAC
296-62-07712 means a changed or altered procedure, material
or component of a control system, which replaces a procedure,
material or component of a required system. Omitting a procedure
or component, or reducing or diminishing the stringency or strength
of a material or component of the control system is not a “modification”
for the purposes of WAC
296-62-07712.
Negative initial exposure assessment means a demonstration
by the employer (which complies with the criteria in WAC
296-62-07709) that employee exposure during an operation is
expected to be consistently below the PELs.
PACM means “presumed asbestos-containing material.”
Presumed asbestos-containing material means thermal system
insulation and surfacing material found in buildings, vessels,
and vessel sections constructed no later than 1980. The designation
of a material as “PACM” may be rebutted pursuant to
WAC
296-62-07721.
Project designer means a person who has successfully completed
the training requirements for an abatement project designer established
by 40 U.S.C. 763.90(g).
Regulated area means an area established by the employer
to demarcate areas where Class I, II, and III asbestos work is
conducted, and any adjoining area where debris and waste from
such asbestos work accumulate; and a work area within which airborne
concentrations of asbestos, exceed or can reasonably be expected
to exceed the permissible exposure limit. Requirements for regulated
areas are set out in WAC
296-62-07711.
Removal means all operations where ACM and/or PACM is
taken out or stripped from structures or substrates, and includes
demolition operations.
Renovation means the modifying of any existing vessel,
vessel section, structure, or portion thereof.
Repair means overhauling, rebuilding, reconstructing,
or reconditioning of vessels, vessel sections, structures or substrates,
including encapsulation or other repair of ACM or PACM attached
to vessels, vessel sections, structures or substrates.
Surfacing material means material that is sprayed, troweled-on
or otherwise applied to surfaces (such as acoustical plaster on
ceilings and fireproofing materials on structural members, or
other materials on surfaces for acoustical, fireproofing, and
other purposes).
Surfacing ACM means surfacing material which contains
more than 1% asbestos.
Thermal system insulation (TSI) means ACM applied to pipes,
fittings, boilers, breaching, tanks, ducts, or other structural
components to prevent heat loss or gain.
Thermal system insulation ACM is thermal system insulation
which contains more than 1% asbestos.
(1) Time weighted average (TWA). The employer shall ensure that
no employee is exposed to an airborne concentration of asbestos
in excess of 0.1 fiber per cubic centimeter (0.1 f/cc) of air
as an eight-hour time-weighted average (TWA) as determined by
the method prescribed in Appendix A of this part, or by an equivalent
method recognized by the department.
(2) Excursion limit. The employer shall ensure that no employee
is exposed to an airborne concentration of asbestos in excess
of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged
over a sampling period of thirty minutes, as determined by the
method prescribed in Appendix A of this part, or by an equivalent
method recognized by the department.
(1) On multi-employer worksites, an employer performing work
requiring the establishment of a regulated area shall inform other
employers on the site of the nature of the employer's work with
asbestos and/or PACM, of the existence of and requirements pertaining
to regulated areas, and the measures taken to ensure that employees
of such other employers are not exposed to asbestos.
(2) Asbestos hazards at a multi-employer worksite shall be abated
by the employer who created or controls the source of asbestos
contamination. For example, if there is a significant breach of
an enclosure containing Class I work, the employer responsible
for erecting the enclosure shall repair the breach immediately.
(3) In addition, all employers of employees exposed to asbestos
hazards shall comply with applicable protective provisions to
protect their employees. For example, if employees working immediately
adjacent to a Class I asbestos job are exposed to asbestos due
to the inadequate containment of such jobs, their employer shall
either remove the employees from the area until the enclosure
breach is repaired; or perform an initial exposure assessment
pursuant to WAC
296-62-07709.
(4) All employers of employees working adjacent to regulated
areas established by another employer on a multi-employer worksite,
shall take steps on a daily basis to ascertain the integrity of
the enclosure and/or the effectiveness of the control method relied
on by the primary asbestos contractor to assure that asbestos
fibers do not migrate to such adjacent areas.
(5) All general contractors on a construction project which includes
work covered by this standard shall be deemed to exercise general
supervisory authority over the work covered by this standard,
even though the general contractor is not qualified to serve as
the asbestos “competent person” as defined by WAC
296-62-07703. As supervisor of the entire project, the general
contractor shall ascertain whether the asbestos contractor is
in compliance with this standard, and shall require such contractor
to come into compliance with this standard when necessary.
(a) Each employer who has a workplace or work operation where
exposure monitoring is required under this part must perform
monitoring to determine accurately the airborne concentrations
of asbestos to which employees may be exposed.
(b) Determinations of employee exposure must be made from breathing
zone air samples that are representative of the eight-hour TWA
and thirty minute short-term exposures of each employee.
(c) Representative eight-hour TWA employee exposures must be
determined on the basis of one or more samples representing
full-shift exposure for each shift for each employee in each
job classification in each work area.
(d) Representative thirty minute short-term employee exposures
must be determined on the basis of one or more samples representing
thirty minute exposures associated with operations that are
most likely to produce exposures above the excursion limit for
each shift for each job classification in each work area.
(2) Exposure monitoring requirements for all occupational exposures
to asbestos in all industries covered by the Washington Industrial
Safety and Health Act except construction work, as defined in
WAC
296-155-012, and except ship repairing, shipbuilding and shipbreaking
employments and related employments as defined in WAC
296-304-01001.
(a) Initial monitoring.
(i) Each employer who has a workplace or work operation covered
by this standard, except as provided for in (a)(ii) and (iii)
of this subsection, must perform initial monitoring of employees
who are, or may reasonably be expected to be exposed to airborne
concentrations at or above the TWA permissible exposure limit
and/or excursion limit. The initial monitoring must be at
the initiation of each asbestos job to accurately determine
the airborne concentration of asbestos to which employees
may be exposed.
(ii) Where the employer or his/her representative has monitored
after March 31, 1992, for the TWA permissible exposure limit
and/or excursion limit, and the monitoring satisfies all other
requirements of this section, and the monitoring data was
obtained during work operations conducted under workplace
conditions closely resembling the processes, type of material
including percentage of asbestos, control methods, work practices,
and environmental conditions used and prevailing in the employer's
current operations, the employer may rely on such earlier
monitoring results to satisfy the requirements of (a)(i) of
this subsection.
(iii) Where the employer has relied upon objective data that
demonstrates that asbestos is not capable of being released
in airborne concentrations at or above the TWA permissible
exposure limit and/or excursion limit under those work conditions
of processing, use, or handling expected to have the greatest
potential for releasing asbestos, then no initial monitoring
is required.
(b) Monitoring frequency (periodic monitoring) and patterns.
After the initial determinations required by subsection (2)(a)(i)
of this section, samples must be of such frequency and pattern
as to represent with reasonable accuracy the levels of exposure
of the employees. Sampling must not be at intervals greater
than six months for employees whose exposures may reasonably
be foreseen to exceed the TWA permissible exposure limit and/or
excursion limit.
(c) Daily monitoring within regulated areas: The employer must
conduct daily monitoring that is representative of the exposure
of each employee who is assigned to work within a regulated
area. Exception: When all employees within a regulated area
are equipped with full facepiece supplied-air respirators operated
in the pressure-demand mode equipped with either an auxiliary
positive pressure self-contained breathing apparatus or a HEPA
filter, the employer may dispense with the daily monitoring
required by this subsection.
(d) Changes in monitoring frequency. If either the initial
or the periodic monitoring required by subsection (2)(a) and
(b) of this section statistically indicates that employee exposures
are below the TWA permissible exposure limit and/or excursion
limit, the employer may discontinue the monitoring for those
employees whose exposures are represented by such monitoring.
(e) Additional monitoring. Notwithstanding the provisions of
subsection (2)(a)(ii) and (c) of this section, the employer
must institute the exposure monitoring required under subsection
(2)(a)(i) and (ii) of this section whenever there has been a
change in the production, process, control equipment, personnel,
or work practices that may result in new or additional exposures
above the TWA permissible exposure limit and/or excursion limit,
or when the employer has any reason to suspect that a change
may result in new or additional exposures above the TWA permissible
exposure limit and/or excursion limit.
(3) Exposure assessment monitoring requirements for all construction
work as defined in WAC
296-155-012 and for all ship repairing, shipbuilding and shipbreaking
employments and related employments as defined in WAC
296-304-01001.
(a) Initial exposure assessment.
(i) Each employer who has a workplace or work operation covered
by this standard must ensure that a “competent person”
conducts an exposure assessment immediately before or at the
initiation of the operation to ascertain expected exposures
during that operation or workplace. The assessment must be
completed in time to comply with the requirements which are
triggered by exposure data or lack of a “negative exposure
assessment,” and to provide information necessary to
assure that all control systems planned are appropriate for
that operation and will work properly.
(ii) Basis of initial exposure assessment: Unless a negative
exposure assessment has been made according to (b) of this
subsection, the initial exposure assessment must, if feasible,
be based on monitoring conducted according to (b) of this
subsection. The assessment must take into consideration both
the monitoring results and all observations, information or
calculations which indicate employee exposure to asbestos,
including any previous monitoring conducted in the workplace,
or of the operations of the employer which indicate the levels
of airborne asbestos likely to be encountered on the job.
For Class I asbestos work, until the employer conducts exposure
monitoring and documents that employees on that job will not
be exposed in excess of the PELs, or otherwise makes a negative
exposure assessment according to (b) of this subsection, the
employer must presume that employees are exposed in excess
of the TWA and excursion limit.
(b) Negative exposure assessment: For any one specific asbestos
job which will be performed by employees who have been trained
in compliance with the standard, the employer may demonstrate
that employee exposures will be below the PELs by data which
conform to the following criteria:
(i) Objective data demonstrating that the products or material
containing asbestos minerals or the activity involving such
product or material cannot release airborne fibers in concentrations
exceeding the TWA and excursion limit under those work conditions
having the greatest potential for releasing asbestos; or
(ii) Where the employer has monitored prior asbestos jobs
for the PEL and the excursion limit within 12 months of the
current or projected job, the monitoring and analysis were
performed in compliance with the asbestos standard in effect;
and the data was obtained during work operations conducted
under workplace conditions “closely resembling”
the processes, type of material including percentage of asbestos,
control methods, work practices, and environmental conditions
used and prevailing in the employer's current operations,
the operations were conducted by employees whose training
and experience are no more extensive than that of employees
performing the current job, and these data show that under
the conditions prevailing and which will prevail in the current
workplace there is a high degree of certainty that employee
exposures will not exceed the TWA or excursion limit; or
(iii) The results of initial exposure monitoring of the current
job made from breathing zone samples that are representative
of the 8-hour TWA and 30-minute short-term exposures of each
employee covering operations which are most likely during
the performance of the entire asbestos job to result in exposures
over the PELs.
(c) Periodic monitoring.
(i) Class I and Class II operations. The employer must conduct
daily monitoring that is representative of the exposure of
each employee who is assigned to work within a regulated area
who is performing Class I or II work, unless the employer
according to (b) of this subsection, has made a negative exposure
assessment for the entire operation.
(ii) All operations under the standard other than Class I
and II operations. The employer must conduct periodic monitoring
of all work where exposures are expected to exceed a PEL,
at intervals sufficient to document the validity of the exposure
prediction.
(iii) Exception. When all employees required to be monitored
daily are equipped with supplied-air respirators operated
in the pressure demand mode, the employer may dispense with
the daily monitoring required by subsection (2)(c) of this
section. However, employees performing Class I work using
a control method which is not listed in WAC
296-62-07712 or using a modification of a listed control
method, must continue to be monitored daily even if they are
equipped with supplied-air respirators.
(d) Termination of monitoring. If the periodic monitoring required
by (c) of this subsection reveals that employee exposures, as
indicated by statistically reliable measurements, are below
the permissible exposure limit and excursion limit the employer
may discontinue monitoring for those employees whose exposures
are represented by such monitoring.
(e) Monitoring outside negative-pressure enclosures: The employer
must conduct representative area monitoring of the airborne
fiber levels at least every other day at the HEPA machine exhaust
and entrance to the decontamination area.
(f) Additional monitoring. Notwithstanding the provisions of
(b), (c), and (d) of this subsection, the employer must institute
the exposure monitoring required under (c) of this subsection
whenever there has been a change in process, control equipment,
personnel or work practices that may result in new or additional
exposures above the permissible exposure limit and/or excursion
limit or when the employer has any reason to suspect that a
change may result in new or additional exposures above the permissible
exposure limit and/or excursion limit. Such additional monitoring
is required regardless of whether a “negative exposure
assessment” was previously produced for a specific job.
(g) Preabatement monitoring. Prior to the start of asbestos
work, respresentative area monitoring must be conducted for
comparison to clearance monitoring as required by subsection
(3)(h) of this section. Preabatement air monitoring is not required
for outdoor work.
(h) Clearance monitoring. Representative area air monitoring
must be taken at the completion of the asbestos work. Air sample
results must be obtained before removal or reoccupancy of the
regulated area. Clearance air monitoring is not required for
outdoor asbestos work. The employer must demonstrate by monitoring
that the airborne concentration is below:
The permissible exposure limit; or
At or below the airborne fiber level existing prior to the
start of the asbestos work, whichever level is lower.
(4) Method of monitoring.
(a) All samples taken to satisfy the employee exposure monitoring
requirements of this section must be personal samples collected
following the procedures specified in WAC
296-62-07735, Appendix A.
(b) Monitoring must be performed by persons having a thorough
understanding of monitoring principles and procedures and who
can demonstrate proficiency in sampling techniques.
(c) All samples taken to satisfy the monitoring requirements
of this section must be evaluated using the WISHA reference
method specified in WAC
296-62-07735, Appendix A, or an equivalent counting method
recognized by the department.
(d) If an equivalent method to the WISHA reference method is
used, the employer must ensure that the method meets the following
criteria:
(i) Replicate exposure data used to establish equivalency
are collected in side-by-side field and laboratory comparisons;
and
(ii) The comparison indicates that ninety percent of the
samples collected in the range 0.5 to 2.0 times the permissible
limit have an accuracy range of plus or minus twenty-five
percent of the WISHA reference method results at a ninety-five
percent confidence level as demonstrated by a statistically
valid protocol; and
(iii) The equivalent method is documented and the results
of the comparison testing are maintained.
(e) To satisfy the monitoring requirements of this section,
employers must use the results of monitoring analysis performed
by laboratories which have instituted quality assurance programs
that include the elements as prescribed in WAC
296-62-07735, Appendix A.
(5) Employee notification of monitoring results.
(a) The employer must, as soon as possible but no later than
within five days for construction and shipyard industries and
fifteen working days for other industries, after the receipt
of the results of any monitoring performed under the standard,
notify the affected employees of these results in writing either
individually or by posting of results in an appropriate location
that is accessible to affected employees.
(b) The written notification required by (a) of this subsection
must contain the corrective action being taken by the employer
to reduce employee exposure to or below the TWA and/or excursion
exposure limits, wherever monitoring results indicated that
the TWA and/or excursion exposure limits had been exceeded.
(6) Observation of monitoring.
(a) The employer must provide affected employees or their designated
representatives an opportunity to observe any monitoring of
employee exposure to asbestos conducted in accordance with this
section.
(b) When observation of the monitoring of employee exposure
to asbestos requires entry into an area where the use of protective
clothing or equipment is required, the observer must be provided
with and be required to use such clothing and equipment and
shall comply with all other applicable safety and health procedures.
(1) General. The employer shall establish a regulated area in
work areas where airborne concentrations of asbestos exceed or
can reasonably be expected to exceed the permissible exposure
limits prescribed in WAC
296-62-07705. All Class I, II and III asbestos work shall
be conducted within regulated areas. All other operations covered
by this standard shall be conducted within the regulated area
where airborne concentrations of asbestos exceed or can reasonably
be expected to exceed permissible exposure limits. Regulated areas
shall comply with the requirements of subsections (2), (3), (4),
(5), (6), (7), and (8) of this section.
(2) Demarcation. The regulated area shall be demarcated in any
manner that minimizes the number of persons within the area and
protects persons outside the area from exposure to airborne asbestos.
Where critical barriers or negative pressure enclosures are used,
they may demarcate the regulated area. Signs shall be provided
and displayed pursuant to the requirements of WAC
296-62-07721.
(3) Access. Access to regulated areas shall be limited to authorized
persons or to persons authorized by the Washington Industrial
Safety and Health Act or regulations issued pursuant thereto.
(4) Provision of respirators. Each person entering a regulated
area where employees are required in WAC
296-62-07715(1) to wear respirators shall be supplied with
and required to use a respirator, selected in accordance with
WAC
296-62-07715(2).
(5) Protective clothing. All persons entering a regulated area
shall be supplied with and required to wear protective clothing,
selected in accordance with WAC
296-62-07717.
(6) Prohibited activities. The employer shall ensure that employees
do not eat, drink, smoke, chew tobacco or gum, or apply cosmetics
in the regulated areas.
(7) Permit-required confined space. The employer shall determine
if a permit-required confined space hazard exists and shall take
any necessary precautions in accordance with chapter
296-62 WAC Part M.
(8) Competent persons. For construction and shipyard work the
employer shall ensure that all asbestos work performed within
regulated areas is supervised by a competent person, as defined
in WAC
296-62-07703. The duties of the competent person are set out
in WAC
296-62-07728.
WAC
296-62-07712 Requirements for asbestos activities in construction
and shipyard work.
(1) Methods of compliance, the following engineering controls
and work practices of this section must be used for construction
work defined in WAC
296-155-012 and for all ship repair defined in WAC
296-304-010.
(2) Engineering controls and work practices for all operations
covered by this section. The employer must use the following engineering
controls and work practices in all operations covered by this
section, regardless of the levels of exposure:
(a) Vacuum cleaners equipped with HEPA filters to collect all
debris and dust containing ACM and PACM, except as provided
in subsection (10)(b) of this section in the case of roofing
material.
(b) Wet methods, or wetting agents, to control employee exposures
during asbestos handling, mixing, removal, cutting, application,
and cleanup, except where employers demonstrate that the use
of wet methods is infeasible due to, for example, the creation
of electrical hazards, equipment malfunction, and, in roofing,
except as provided in subsection (10)(b) of this section.
(c) Asbestos must be handled, mixed, applied, removed, cut,
scored, or otherwise worked in a wet saturated state to prevent
the emission of airborne fibers unless the usefulness of the
product would be diminished thereby.
(d) Prompt cleanup and disposal of wastes and debris contaminated
with asbestos in leak-tight containers except in roofing operations,
where the procedures specified in this section apply.
(3) In addition to the requirements of subsection (2) of this
section, the employer must use the following control methods to
achieve compliance with the TWA permissible exposure limit and
excursion limit prescribed by WAC
296-62-07705:
(a) Local exhaust ventilation equipped with HEPA filter dust
collection systems;
(b) Enclosure or isolation of processes producing asbestos
dust;
(c) Ventilation of the regulated area to move contaminated
air away from the breathing zone of employees and toward a filtration
or collection device equipped with a HEPA filter;
(d) Use of other work practices and engineering controls that
the department can show to be feasible;
(e) Wherever the feasible engineering and work practice controls
described above are not sufficient to reduce employee exposure
to or below the permissible exposure limit and/or excursion
limit prescribed in WAC
296-62-07705, the employer must use them to reduce employee
exposure to the lowest levels attainable by these controls and
must supplement them by the use of respiratory protection that
complies with the requirements of WAC
296-62-07715.
(4) Prohibitions. The following work practices and engineering
controls must not be used for work related to asbestos or for
work which disturbs ACM or PACM, regardless of measured levels
of asbestos exposure or the results of initial exposure assessments:
(a) High-speed abrasive disc saws that are not equipped with
point or cut ventilator or enclosures with HEPA filtered exhaust
air;
(b) Compressed air used to remove asbestos, or materials containing
asbestos, unless the compressed air is used in conjunction with
an enclosed ventilation system designed to capture the dust
cloud created by the compressed air;
(c) Dry sweeping, shoveling or other dry cleanup of dust and
debris containing ACM and PACM;
(d) Employee rotation as a means of reducing employee exposure
to asbestos.
(5) Cleanup.
(a) After completion of asbestos work (removal, demolition,
and renovation operations), all surfaces in and around the work
area must be cleared of any asbestos debris.
(b) Encapsulant must be applied to all areas where asbestos
has been removed to ensure binding of any remaining fibers.
(6) Class I requirements. The following engineering controls
and work practices and procedures must be used:
(a) All Class I work, including the installation and operation
of the control system must be supervised by a competent person
as defined in WAC
296-62-07703;
(b) For all Class I jobs involving the removal of more than
25 linear or 10 square feet of thermal system insulation or
surfacing material; for all other Class I jobs, where the employer
cannot produce a negative exposure assessment according to WAC
296-62-07709(3), or where employees are working in areas
adjacent to the regulated area, while the Class I work is being
performed, the employer must use one of the following methods
to ensure that airborne asbestos does not migrate from the regulated
area:
(i) Critical barriers must be placed over all the openings
to the regulated area, except where activities are performed
outdoors; or
(ii) The employer must use another barrier or isolation method
which prevents the migration of airborne asbestos from the
regulated area, as verified by perimeter area surveillance
during each work shift at each boundary of the regulated area,
showing no visible asbestos dust; and perimeter area monitoring
showing that clearance levels contained in 40 CFR Part 763,
Subpart E, of the EPA Asbestos in Schools Rule are met, or
that perimeter area levels, measured by Phase Contrast Microscopy
(PCM) are no more than background levels representing the
same area before the asbestos work began. The results of such
monitoring must be made known to the employer no later than
24 hours from the end of the work shift represented by such
monitoring. Exception: For work completed outdoors where employees
are not working in areas adjacent to the regulated areas,
(a) of this subsection is satisfied when the specific control
methods in subsection (7) of this section are used;
(c) For all Class I jobs, HVAC systems must be isolated in
the regulated area by sealing with a double layer of 6 mil plastic
or the equivalent;
(d) For all Class I jobs, impermeable dropcloths shall be placed
on surfaces beneath all removal activity;
(e) For all Class I jobs, all objects within the regulated
area must be covered with impermeable dropcloths or plastic
sheeting which is secured by duct tape or an equivalent;
(f) For all Class I jobs where the employer cannot produce
a negative exposure assessment, or where exposure monitoring
shows that a PEL is exceeded, the employer must ventilate the
regulated area to move contaminated air away from the breathing
zone of employees toward a HEPA filtration or collection device.
(7) Specific control methods for Class I work. In addition, Class
I asbestos work must be performed using one or more of the following
control methods according to the limitations stated below:
(a) Negative pressure enclosure (NPE) systems: NPE systems
may be used where the configuration of the work area does not
make the erection of the enclosure infeasible, with the following
specifications and work practices:
(i) Specifications:
(A) The negative pressure enclosure (NPE) may be of any
configuration;
(B) At least 4 air changes per hour must be maintained
in the NPE;
(C) A minimum of -0.02 column inches of water pressure
differential, relative to outside pressure, must be maintained
within the NPE as evidenced by manometric measurements;
(D) The NPE must be kept under negative pressure throughout
the period of its use; and
(E) Air movement must be directed away from employees performing
asbestos work within the enclosure, and toward a HEPA filtration
or collection device.
(ii) Work practices:
(A) Before beginning work within the enclosure and at the
beginning of each shift, the NPE must be inspected for breaches
and smoke-tested for leaks, and any leaks sealed.
(B) Electrical circuits in the enclosure must be deactivated,
unless equipped with ground-fault circuit interrupters.
(b) Glove bag systems may be used to remove PACM and/or ACM
from straight runs of piping and elbows and other connections
with the following specifications and work practices:
(i) Specifications:
(A) Glove bags must be made of 6 mil thick plastic and
must be seamless at the bottom.
(B) Glove bags used on elbows and other connections must
be designed for that purpose and used without modifications.
(ii) Work practices:
(A) Each glove bag must be installed so that it completely
covers the circumference of pipe or other structure where
the work is to be done.
(B) Glove bags must be smoke-tested for leaks and any leaks
sealed prior to use.
(C) Glove bags may be used only once and may not be moved.
(D) Glove bags must not be used on surfaces whose temperature
exceeds 150oF.
(E) Prior to disposal, glove bags must be collapsed by
removing air within them using a HEPA vacuum.
(F) Before beginning the operation, loose and friable material
adjacent to the glove bag/box operation must be wrapped
and sealed in two layers of six mil plastic or otherwise
rendered intact.
(G) Where system uses attached waste bag, such bag must
be connected to collection bag using hose or other material
which must withstand pressure of ACM waste and water without
losing its integrity.
(H) Sliding valve or other device must separate waste bag
from hose to ensure no exposure when waste bag is disconnected.
(I) At least two persons must perform Class I glove bag
removal operations.
(c) Negative pressure glove bag systems. Negative pressure
glove bag systems may be used to remove ACM or PACM from piping.
(i) Specifications: In addition to specifications for glove
bag systems above, negative pressure glove bag systems must
attach HEPA vacuum systems or other devices to bag during
removal.
(ii) Work practices:
(A) The employer must comply with the work practices for
glove bag systems in this section.
(B) The HEPA vacuum cleaner or other device used during
removal must run continually during the operation until
it is completed at which time the bag must be collapsed
prior to removal of the bag from the pipe.
(C) Where a separate waste bag is used along with a collection
bag and discarded after one use, the collection bag may
be reused if rinsed clean with amended water before reuse.
(d) Negative pressure glove box systems: Negative pressure
glove boxes may be used to remove ACM or PACM from pipe runs
with the following specifications and work practices:
(i) Specifications:
(A) Glove boxes must be constructed with rigid sides and
made from metal or other material which can withstand the
weight of the ACM and PACM and water used during removal.
(B) A negative pressure generator must be used to create
negative pressure in the system.
(C) An air filtration unit must be attached to the box.
(D) The box must be fitted with gloved apertures.
(E) An aperture at the base of the box must serve as a
bagging outlet for waste ACM and water.
(F) A back-up generator must be present on site.
(G) Waste bags must consist of 6 mil thick plastic double-bagged
before they are filled or plastic thicker than 6 mil.
(ii) Work practices:
(A) At least two persons must perform the removal.
(B) The box must be smoke-tested for leaks and any leaks
sealed prior to each use.
(C) Loose or damaged ACM adjacent to the box must be wrapped
and sealed in two layers of 6 mil plastic prior to the job,
or otherwise made intact prior to the job.
(D) A HEPA filtration system must be used to maintain pressure
barrier in box.
(e) Water spray process system. A water spray process system
may be used for removal of ACM and PACM from cold line piping
if, employees carrying out such process have completed a 40-hour
separate training course in its use, in addition to training
required for employees performing Class I work. The system must
meet the following specifications and shall be performed by
employees using the following work practices:
(i) Specifications:
(A) Piping must be surrounded on 3 sides by rigid framing.
(B) A 360 degree water spray, delivered through nozzles
supplied by a high pressure separate water line, must be
formed around the piping.
(C) The spray must collide to form a fine aerosol which
provides a liquid barrier between workers and the ACM and
PACM.
(ii) Work practices:
(A) The system must be run for at least 10 minutes before
removal begins.
(B) All removal must take place within the water barrier.
(C) The system must be operated by at least three persons,
one of whom must not perform removal, but must check equipment,
and ensure proper operation of the system.
(D) After removal, the ACM and PACM must be bagged while
still inside the water barrier.
(f) A small walk-in enclosure which accommodates no more than
two persons (mini-enclosure) may be used if the disturbance
or removal can be completely contained by the enclosure with
the following specifications and work practices:
(i) Specifications:
(A) The fabricated or job-made enclosure must be constructed
of 6 mil plastic or equivalent.
(B) The enclosure must be placed under negative pressure
by means of a HEPA filtered vacuum or similar ventilation
unit.
(C) Change room. A small change room made of 6-mil-thick
polyethylene plastic should be contiguous to the mini-enclosure,
and is necessary to allow the worker to vacuum off his/her
protective coveralls and remove them before leaving the
work area. While inside the enclosure, the worker should
wear Tyvek disposable coveralls or equivalent and must use
the appropriate HEPA-filtered dual cartridge respiratory
protection. The advantages of mini-enclosures are that they
limit the spread of asbestos contamination, reduce the potential
exposure of bystanders and other workers who may be working
in adjacent areas, and are quick and easy to install. The
disadvantage of mini-enclosures is that they may be too
small to contain the equipment necessary to create a negative-pressure
within the enclosure; however, the double layer of plastic
sheeting will serve to restrict the release of asbestos
fibers to the area outside the enclosure.
(ii) Work practices:
(A) Before use, the mini-enclosure must be inspected for
leaks and smoke-tested to detect breaches, and any breaches
sealed.
(B) Before reuse, the interior must be completely washed
with amended water and HEPA-vacuumed.
(C) During use, air movement must be directed away from
the employee's breathing zone within the mini-enclosure.
(8) Alternative control methods for Class I work. Class I work
may be performed using a control method which is not referenced
in subsection (2)(a) through (3)(e) of this section, or which
modifies a control method referenced in subsection (2)(a) through
(3)(e) of this section, if the following provisions are complied
with:
(a) The control method shall enclose, contain or isolate the
processes or source of airborne asbestos dust, before it enters
the breathing zone of employees.
(b) A certified industrial hygienist or licensed professional
engineer who is also qualified as a project designer as defined
in WAC
296-62-07703, shall evaluate the work area, the projected
work practices and the engineering controls and shall certify
in writing that the planned control method is adequate to reduce
direct and indirect employee exposure to below the PELs under
worst-case conditions of use, and that the planned control method
will prevent asbestos contamination outside the regulated area,
as measured by clearance sampling which meets the requirements
of EPA's Asbestos in Schools rule issued under AHERA, or perimeter
monitoring which meets the criteria in subsection (6)(b)(ii)
of this section. Where the TSI or surfacing material to be removed
is 25 linear or 10 square feet or less, the evaluation required
in subsection (8)(b) of this section may be performed by a competent
person.
(c) Before work which involves the removal of more than 25
linear or 10 square feet of thermal system insulation or surfacing
material is begun using an alternative method which has been
the subject of subsection (2)(a) through (3)(e) of this section
required evaluation and certification, the employer shall include
a copy of such evaluation and certification with notifications
required by WAC
296-65-020, Notification requirements. The submission shall
not constitute approval by WISHA.
(d) The evaluation of employee exposure required in WAC
296-62-07712(8) must include and be based on sampling and
analytical data representing employee exposure during the use
of such method under the worst-case conditions and by employees
whose training and experiences are equivalent to employees who
are to perform the current job.
(9) Work practices and engineering controls for Class II work.
(a) All Class II work must be supervised by a competent person
as defined in WAC
296-62-07703.
(b) For all indoor Class II jobs, where the employer has not
produced a negative exposure assessment according to WAC
296-62-07709(3), or where during the job, changed conditions
indicate there may be exposure above the PEL or where the employer
does not remove the ACM in a substantially intact state, the
employer must use one of the following methods to ensure that
airborne asbestos does not migrate from the regulated area:
(i) Critical barriers must be placed over all openings to
the regulated area; or
(ii) The employer must use another barrier or isolation method
which prevents the migration of airborne asbestos from the
regulated area, as verified by perimeter area monitoring or
clearance monitoring which meets the criteria set out in subsection
(6)(b)(ii) of this section.
(c) Impermeable dropcloths must be placed on surfaces beneath
all removal activity.
(d) All Class II asbestos work must be performed using the
work practices and requirements set out above in subsection
(2) of this section.
(10) Additional controls for Class II work. Class II asbestos
work must also be performed by complying with the work practices
and controls designated for each type of asbestos work to be performed,
set out in this paragraph. Where more than one control method
may be used for a type of asbestos work, the employer may choose
one or a combination of designated control methods. Class II work
also may be performed using a method allowed for Class I work,
except that glove bags and glove boxes are allowed if they fully
enclose the Class II material to be removed.
(a) For removing vinyl and asphalt flooring materials which
contain ACM or for which in buildings constructed no later than
1980, the employer has not verified the absence of ACM according
to WAC
296-62-07712 (10)(a)(ix). The employer must ensure that
employees comply with the following work practices and that
employees are trained in these practices according to WAC
296-62-07722.
(i) Flooring or its backing must not be sanded.
(ii) Vacuums equipped with HEPA filter, disposable dust bag,
and metal floor tool (no brush) must be used to clean floors.
(iii) Resilient sheeting must be removed by cutting with
wetting of the snip point and wetting during delamination.
Rip-up of resilient sheet floor material is prohibited.
(iv) All scraping of residual adhesive and/or backing must
be performed using wet methods.
(v) Dry sweeping is prohibited.
(vi) Mechanical chipping is prohibited unless performed in
a negative pressure enclosure which meets the requirements
of subsection (7)(a) of this section.
(vii) Tiles must be removed intact, unless the employer demonstrates
that intact removal is not possible.
(viii) When tiles are heated and can be removed intact, wetting
may be omitted.
(ix) Resilient flooring material including associated mastic
and backing must be assumed to be asbestos-containing unless
an industrial hygienist determines that it is asbestos-free
using recognized analytical techniques.
(b) For removing roofing material which contains ACM the employer
must ensure that the following work practices are followed:
(i) Roofing material must be removed in an intact state to
the extent feasible.
(ii) Wet methods must be used to remove roofing materials
that are not intact, or that will be rendered not intact during
removal, unless such wet methods are not feasible or will
create safety hazards.
(iii) Cutting machines must be continuously misted during
use, unless a competent person determines that misting substantially
decreases worker safety.
(iv) When removing built-up roofs with asbestos-containing
roofing felts and an aggregate surface using a power roof
cutter, all dust resulting from the cutting operation must
be collected by a HEPA dust collector, or must be HEPA vacuumed
by vacuuming along the cut line. When removing built-up roofs
with asbestos-containing roofing felts and a smooth surface
using a power roof cutter, the dust resulting from the cutting
operation must be collected either by a HEPA dust collector
or HEPA vacuuming along the cut line, or by gently sweeping
and then carefully and completely wiping up the still wet
dust and debris left along the cut line. The dust and debris
must be immediately bagged or placed in covered containers.
(v) Asbestos-containing material that has been removed from
a roof must not be dropped or thrown to the ground. Unless
the material is carried or passed to the ground by hand, it
must be lowered to the ground via covered, dust-tight chute,
crane or hoist:
(A) Any ACM that is not intact must be lowered to the ground
as soon as is practicable, but in any event no later than
the end of the work shift. While the material remains on
the roof it must either be kept wet, placed in an impermeable
waste bag, or wrapped in plastic sheeting.
(B) Intact ACM must be lowered to the ground as soon as
is practicable, but in any event no later than the end of
the work shift.
(vi) Upon being lowered, unwrapped material must be transferred
to a closed receptacle in such manner so as to preclude the
dispersion of dust.
(vii) Roof level heating and ventilation air intake sources
shall be isolated or the ventilation system must be shut down.
(viii) Notwithstanding any other provision of this section,
removal or repair of sections of intact roofing less than
25 square feet in area does not require use of wet methods
or HEPA vacuuming as long as manual methods which do not render
the material nonintact are used to remove the material and
no visible dust is created by the removal method used. In
determining whether a job involves less than 25 square feet,
the employer must include all removal and repair work performed
on the same roof on the same day.
(c) When removing cementitious asbestos-containing siding and
shingles or transite panels containing ACM on building exteriors
(other than roofs, where subsection (10)(b) of this section
applies) the employer must ensure that the following work practices
are followed:
(i) Cutting, abrading or breaking siding, shingles, or transite
panels, must be prohibited unless the employer can demonstrate
that methods less likely to result in asbestos fiber release
cannot be used.
(ii) Each panel or shingle must be sprayed with amended water
prior to removal.
(iii) Unwrapped or unbagged panels or shingles must be immediately
lowered to the ground via covered dust-tight chute, crane
or hoist, or placed in an impervious waste bag or wrapped
in plastic sheeting and lowered to the ground no later than
the end of the work shift.
(iv) Nails must be cut with flat, sharp instruments.
(d) When removing gaskets containing ACM, the employer must
ensure that the following work practices are followed:
(i) If a gasket is visibly deteriorated and unlikely to be
removed intact, removal must be undertaken within a glove
bag as described in subsection (7)(b) of this section.
(ii) (Reserved.)
(iii) The gasket must be immediately placed in a disposal
container.
(iv) Any scraping to remove residue must be performed wet.
(e) When performing any other Class II removal of asbestos-containing
material for which specific controls have not been listed in
subsection (10) of this section, the employer must ensure that
the following work practices are complied with.
(i) The material must be thoroughly wetted with amended water
prior to and during its removal.
(ii) The material must be removed in an intact state unless
the employer demonstrates that intact removal is not possible.
(iii) Cutting, abrading or breaking the material must be
prohibited unless the employer can demonstrate that methods
less likely to result in asbestos fiber release are not feasible.
(iv) Asbestos-containing material removed, must be immediately
bagged or wrapped, or kept wet until transferred to a closed
receptacle, no later than the end of the work shift.
(f) Alternative work practices and controls. Instead of the
work practices and controls listed in subsection (10) of this
section, the employer may use different or modified engineering
and work practice controls if the following provisions are complied
with.
(i) The employer must demonstrate by data representing employee
exposure during the use of such method under conditions which
closely resemble the conditions under which the method is
to be used, that employee exposure will not exceed the PELs
under any anticipated circumstances.
(ii) A competent person must evaluate the work area, the
projected work practices and the engineering controls, and
must certify in writing, that the different or modified controls
are adequate to reduce direct and indirect employee exposure
to below the PELs under all expected conditions of use and
that the method meets the requirements of this standard. The
evaluation must include and be based on data representing
employee exposure during the use of such method under conditions
which closely resemble the conditions under which the method
is to be used for the current job, and by employees whose
training and experience are equivalent to employees who are
to perform the current job.
(11) Work practices and engineering controls for Class III asbestos
work. Class III asbestos work must be conducted using engineering
and work practice controls which minimize the exposure to employees
performing the asbestos work and to bystander employees.
(a) The work must be performed using wet methods.
(b) To the extent feasible, the work must be performed using
local exhaust ventilation.
(c) Where the disturbance involves drilling, cutting, abrading,
sanding, chipping, braking, or sawing of thermal system insulation
or surfacing material, the employer must use impermeable dropcloths,
and must isolate the operation using mini-enclosures or glove
bag systems according to subsection (7) of this section or another
isolation method.
(d) Where the employer does not produce a “negative exposure
assessment” for a job, or where monitoring results show
the PEL has been exceeded, the employer must contain the area
using impermeable dropcloths and plastic barriers or their equivalent,
or must isolate the operation using a control system listed
in and in compliance with subsection (7) of this section.
(e) Employees performing Class III jobs, which involve the
disturbance of thermal system insulation or surfacing material,
or where the employer does not produce a “negative exposure
assessment” or where monitoring results show a PEL has
been exceeded, must wear respirators which are selected, used
and fitted according to provisions of WAC
296-62-07715.
(12) Class IV asbestos work. Class IV asbestos jobs must be conducted
by employees trained according to the asbestos awareness training
program set out in WAC
296-62-07722. In addition, all Class IV jobs must be conducted
in conformity with the requirements set out in this section, mandating
wet methods, HEPA vacuums, and prompt clean up of debris containing
ACM and PACM.
(a) Employees cleaning up debris and waste in a regulated area
where respirators are required must wear respirators which are
selected, used and fitted according to provisions of WAC
296-62-07715.
(b) Employers of employees who clean up waste and debris in,
and employers in control of, areas where friable thermal system
insulation or surfacing material is accessible, must assume
that such waste and debris contain asbestos.
(13) Alternative methods of compliance for installation, removal,
repair, and maintenance of certain roofing and pipeline coating
materials. Notwithstanding any other provision of this section,
an employer who complies with all provisions of subsection (10)(a)
and (b) of this section when installing, removing, repairing,
or maintaining intact pipeline asphaltic wrap, or roof flashings
which contain asbestos fibers encapsulated or coated by bituminous
or resinous compounds will be deemed to be in compliance with
this section. If an employer does not comply with all provisions
of this subsection (13), or if during the course of the job the
material does not remain intact, the provisions of subsection
(10) of this section apply instead of this subsection (13).
(a) Before work begins and as needed during the job, a competent
person who is capable of identifying asbestos hazards in the
workplace and selecting the appropriate control strategy for
asbestos exposure, and who has the authority to take prompt
corrective measures to eliminate such hazards, must conduct
an inspection of the worksite and determine that the roofing
material is intact and will likely remain intact.
(b) All employees performing work covered by this subsection
(13) must be trained in a training program that meets the requirements
of WAC
296-62-07722.
(c) The material must not be sanded, abraded, or ground. When
manual methods are used, materials must stay intact.
(d) Material that has been removed from a roof must not be
dropped or thrown to the ground. Unless the material is carried
or passed to the ground by hand, it must be lowered to the ground
via covered, dust-tight chute, crane or hoist. All such material
must be removed from the roof as soon as is practicable, but
in any event no later than the end of the work shift.
(e) Where roofing products which have been labeled as containing
asbestos pursuant to WAC
296-62-07721, installed on nonresidential roofs during operations
covered by this subsection (13), the employer must notify the
building owner of the presence and location of such materials
no later than the end of the job.
(f) All removal or disturbance of pipeline asphaltic wrap must
be performed using wet methods.
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