| Alternatively,
the AHERA protocol may be used to determine volume and flow rate needed
for transmission electron microscopy (TEM) analysis in accordance
with the mandatory provisions of Appendix A (relating to Interim Transmission
Electron Microscopy Analytical Methods--Mandatory and Nonmandatory--and
Mandatory Section to Determine Completion of Response Actions) of
AHERA.
(A) Baseline.
(i) Baseline air samples must be collected before the
start of any asbestos abatement project that requires a design as
described in §296.191(i) and (j) of this chapter. The samples
must be collected from inside the space that will become the regulated
area for the project before any asbestos abatement activity that disturbs
ACBM begins. A minimum of three samples must be collected on 0.8 micron
(MCE) filters loaded in cassettes with electrically conductive extension
cowls. The locations from which baseline air samples are collected
must provide suitable data for comparison with indoor air monitoring
samples collected after asbestos abatement activities begin. Sampling
and, if any, analysis must conform to the NIOSH 7400 method, counting
rules A. For each sample, a sample volume of at least 1,250 liters
must be drawn. Only one cassette may be placed on a pump at a time.
(ii) Baseline air samples must be kept for no fewer
than 30 days after clearance is achieved.
(B) Air sampling during the project.
(i) Ambient air samples must be collected continually
during disturbance of ACM or when asbestos abatement is being conducted
in a containment. Air samples must be analyzed in accordance with
the NIOSH 7400 method, counting rules A and only one cassette may
be placed on a pump at a time.
(ii) Ambient air samples must be collected:
(I) inside containment adjacent to the abatement activities;
(II) outside containment but inside the building, if
applicable;
(III) within 10 feet of the unobstructed exhaust from
the negative air unit discharge, but not directly in the airstream,
where feasible;
(IV) immediately outside the entrance to the decontamination
area used to enter the containment (representative of the air being
drawn into the containment area) or in the case of a remote decontamination
area, immediately outside the entrance to the containment;
(V) immediately outside the entrance of the bag-out
area, if applicable; and
(VI) at any other location required by the specifications
and plans.
(C) Clearance.
(i) Project clearance must consist of an initial visual
inspection, followed by air clearance sampling, removal of containment,
and a final visual inspection.
(ii) Clearance air samples must be collected inside
the containment, as specified by a licensed asbestos consultant, with
a minimum of two samples per containment or in accordance with AHERA
and OSHA regulations, as applicable. Only one cassette may be placed
on a pump at a time.
(iii) All project activities, except an SSSD O&M
activity performed as described in §296.213 of this chapter,
must be cleared by using aggressive air sampling. For each sample,
a sample volume of at least 1,250 liters must be drawn. All air sampling
and analysis must comply with the NIOSH 7400 requirements. Clearance
is achieved if no sample is reported greater than 0.01 f/cc by the
analysis report from the licensed laboratory.
(D) Air sample results. The licensed air monitoring
technician, AMT/PM, or licensed asbestos consultant must record in
writing the results of area, baseline, and clearance air samples that
are analyzed and document that the results are provided to the asbestos
abatement contractor verbally by the following time frames, unless
the consultant designs a sampling strategy that deviates from these
time frames, as described in paragraph (4) of this subsection:
(i) the next working day after the date of sampling,
for any air sample analyzed on-site; or
(ii) for asbestos abatement of friable ACBM, the third
working day after the date of initial sampling, for any air sample
analyzed in an asbestos laboratory off-site.
(2) Personal air monitoring.
(A) Unless a negative exposure assessment is made in
compliance with 29 CFR §1926.1101(f)(2)(iii) (relating to Asbestos),
personal air samples must be collected, monitoring conducted, and
employees informed of results, in compliance with 40 CFR Part 763,
Subpart G (related to Asbestos Worker Protection) or 29 CFR §1926.1101
(relating to Asbestos), as applicable, and subsection (f) of this
section.
(B) Without limiting the requirements of 40 CFR Part
763, Subpart G or 29 CFR §1926.1101, as applicable, a licensed
air monitoring technician, AMT/PM, or asbestos consultant must record
in writing the results of personal air samples that are analyzed and
document that the results are provided to the asbestos abatement contractor
in writing by the following time frames, unless the asbestos consultant
designs a sampling strategy that deviates from these time frames,
as described in paragraph (4) of this subsection:
(i) the next working day after the date of sampling,
for any air sample analyzed on-site; or
(ii) for asbestos abatement of friable ACBM, the third
working day after the date of initial sampling for any air sample
analyzed in an asbestos laboratory off-site.
(3) Other monitoring requirements.
(A) Initial visual inspection. The licensed asbestos
abatement supervisor must perform an initial visual inspection of
the abatement area to confirm that all specified ACM was removed,
encapsulated, or enclosed. The asbestos abatement supervisor must
ensure that all abatement-related items are removed from the containment,
excluding negative air machines and equipment essential to maintain
the containment and to perform the visual inspection. Once the asbestos
abatement supervisor confirms that all specified ACM is addressed,
a licensed asbestos consultant, or a licensed asbestos project manager
or licensed AMT/PM whom the asbestos consultant has given written
authorization to perform the visual inspection, must perform a visual
inspection to determine that all specified ACM was removed, encapsulated,
or enclosed. The initial visual inspection must be performed to ensure
compliance with this chapter, the site-specific specifications and
plans, AHERA, and NESHAP.
(B) Final visual inspection. A final visual inspection
must be performed after the removal of containment and the initial
visual inspection to determine if any ACM escaped the containment
or any ACWM remains. This visual inspection must be conducted by a
licensed asbestos consultant or the consultant's designated licensed
asbestos project manager or licensed AMT/PM and as required in subsection
(b)(1) of this section. The licensed asbestos abatement contractor
must abate all ACM and remove any ACWM discovered by the final visual
inspection, as required in this chapter.
(4) Deviations. A licensed asbestos consultant must
design the air monitoring strategies and may deviate from this subsection
or from the time frames required under §296.54(c)(4) of this
chapter (relating to Asbestos Air Monitoring Technician) and paragraphs
(1)(D) and (2)(B) of this subsection for reporting air sampling results
only if the consultant demonstrates in writing in the specifications
and plans that the engineering controls are at least as protective
of public health as the requirements of this subsection, or for deviations
from the time frames, why the deviation is necessary and any additional
controls put in place as a result of the deviation. The deviation
must be documented on the notification form and described in the project
specifications and plans. The asbestos consultant must, upon request
by DSHS, provide documentation and justification to support any deviation
and must be able to demonstrate that the design is as protective of
public health as the requirements of this subsection, paragraphs (1)(D)
and (2)(B) of this subsection, or §296.54(c)(4) of this chapter,
as applicable.
(i) Posting documents. Each licensed asbestos abatement
contractor, licensed O&M contractor, and RFCI contractor must
post the following documents visible to the public at the entrance
to the regulated area:
(1) the Violation Notification Procedure poster issued
by DSHS; and
(2) a copy of any asbestos-related order issued by
DSHS or any other order from a federal or state asbestos-regulating
authority; each order must be posted for a period of 12 months after
the effective date of the order or for a federal asbestos-related
order, the period required by the federal asbestos-regulating authority.
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