A. Signs.
(1) Danger Signs. A person engaged in an
asbestos project that is a NESHAP source shall display 20-inch by 14-inch
danger signs wherever airborne asbestos fibers may be present, in accordance
with Regulation 29 CFR Part
1926.58.
(2) Project Notification Signs. A business
entity or public unit planning an asbestos project that is a NESHAP source
shall also comply with the following:
(a)
Except in emergency situations and except as provided in §A(3), of this
regulation, at least 3 days before removing or encapsulating asbestos, post the
signs required by §A(4), of this regulation immediately outside all
entrances to and exits from the work site or asbestos project to inform the
public in the immediate vicinity that asbestos abatement will be performed;
and
(b) Keep the signs required by
§A(4), of this regulation, posted until the Maryland Air and Radiation
Management Administration receives the written notice of final air monitoring
results required under §B(3)(f) of this regulation.
(3) Utility companies are not required to
post signs 3 days before removing or encapsulating asbestos at a work site or
asbestos project, but shall comply with any federal requirements regarding the
posting of signs.
(4) Notice of
Asbestos Project signs required by §A(2)(a) of this regulation shall
display the following language with letter sizes and styles of type at least
equal to those specified in this subsection:
(a) The following is an example of the Notice
of Asbestos Project sign:
Pursuant to Environment Article, §
6-414.1, Annotated Code
of Maryland, and COMAR 26.11.21.06 a A(4), notice is hereby given that an
asbestos project is planned for this area. The work will commence on
______________ and is expected to be completed on ____________.
Contractor:
__________________________________________________Owner:
______________________________________________
__________________________________________________
______________________________________________
__________________________________________________
______________________________________________
This notice is required to be posted 3 days in advance on
all asbestos projects which exceed 160 square feet or 260 linear feet of
friable asbestos material.
Date of Posting: _________________Problems or complaints
concerning this work may be referred to Maryland Air and Radiation Management
Administration, (410)631-3200.
(b) Printing Requirements - Type Sizes and
Fonts.
(i) The heading "Notice of Asbestos
Project" shall be printed in 1 inch sans serif type, gothic or block.
(ii) Lines two through ten of the "Notice of
Asbestos Project" sign shall be printed in 24 point sans serif type, gothic or
block.
(iii) The "Date of Posting"
shall be printed in 24 point sans serif type, gothic or block.
(iv) The sentence beginning "Problems or
complaints" shall be printed in 18 point sans serif type, gothic or
block.
B. Any Asbestos Project That Is a NESHAP
Source. A person engaged in an asbestos project in which 260 feet (80 meters)
or more of pipe covered or coated with asbestos materials are stripped or
removed, or 160 square feet (15 square meters) or more of asbestos materials
used to cover or coat any duct, boiler, tank, reactor, turbine, or structural
member are stripped or removed, shall comply with the following:
(1) Use plastic sheeting 6 mils thick or
equivalent. Use either duct tape or equivalent waterproof tape.
(2) Wet asbestos materials to be removed with
a solution containing a surfactant which significantly reduces interfacial
surface tension of water or penetrates friable asbestos materials such that the
material is wet thoroughly and remains wet during the removal process to
minimize dust.
(3) Use the
following cleaning and air monitoring procedures:
(a) If a building or structure is to be
completely demolished, after removing any asbestos materials, clean the work
area until no residue or asbestos material is visible.
(b) During any other asbestos project subject
to this section, after removing any asbestos materials, and before removing any
plastic barriers separating the site from the rest of the building or any
plastic barriers covering vents, windows, doors, or entries to the work site:
(i) Clean all surfaces in the work area using
the water and surfactant solution prescribed in §B(2) of this
regulation;
(ii) When the surface
has dried, vacuum any remaining dry residue on all surfaces using a vacuum
equipped with a high efficiency particulate air (HEPA) filter; and
(iii) Repeat the sequence of wet mopping and
vacuuming until no residue is visible and the measured airborne concentration
of asbestos fibers longer than 5 microns is less than 0.01 fibers per cubic
centimeter (8-hour time-weighted average) using the procedures specified in
§B(3)(c)-(e), of this regulation.
(c) Conduct air monitoring required by
§B(3)(b)(iii), of this regulation, using procedures specified in NIOSH
Analytical Method #P&CAM 239, Asbestos Fibers in Air (February, 1979) which
is incorporated by reference, or equivalent. When clearance monitoring by
transmission electron microscopy is elected, the protocol outlined in the U.S.
EPA Asbestos Hazard and Emergency Response Act (AHERA) rules in 40 CFR Part
763
shall apply, including the application of the "Z" test.
(d) Also, for air monitoring required by
§B(3)(b)(iii), of this regulation, take sufficient samples to represent
asbestos concentrations in the entire work area. Representative sampling shall
require at least:
(i) One sample in every
room; and
(ii) At least one sample
for every 50,000 cubic feet or 5,000 square feet of floor area, whichever
requires more samples.
(e) Within 24 hours after receiving final
written monitoring results, submit to the Department a record of the air
monitoring required by §B(3)(b)(iii) of this regulation. The record shall
indicate the asbestos concentration monitored in the work area after it is
cleaned and before barriers are removed.
(4) To minimize airborne asbestos dust inside
enclosures, use negative pressure systems which meet the following:
(a) The exhaust air passes through a High
Efficiency Particulate Air (HEPA) filter;
(b) The air flow is such that a complete
change of air occurs in the enclosed area at least once every 15 minutes;
and
(c) When practical, the
negative pressure systems are vented to the outside air.
C. Demolition. A person subject to
§§A and B, of this regulation, and engaged in demolition shall also
comply with the following:
(1) Before
beginning any demolition project, cover all windows, doors, and other openings
with plastic sheeting and seal with tape;
(2) Use a negative pressure system described
in §B(4) of this regulation;
(3) If a structure or building is to be
partially demolished, construct a barrier of plastic sheeting sealed with tape
to prevent asbestos from entering any portion of the structure or building not
to be demolished, and seal ducts, including air conditioning and heat ducts,
before wetting and removal;
(4) Wet
all components that contain or may contain asbestos before stripping the
asbestos;
(5) Wet the structure and
components as necessary to assure that the asbestos material to be stripped
remains wet during removal, loading, and transportation; and
(6) For structural members and components
from which asbestos will not be stripped, wet the asbestos at the cut points
and remove this wet asbestos before cutting and removing the structural member
or component.
D.
Renovation. A person subject to §§A and B, of this regulation, and
engaged in renovation shall also comply with the following:
(1) Before beginning any renovation project,
remove all movable objects from the work area and cover the nonmovable objects
with plastic sheeting taped securely in place. Cover floors, other large areas
such as walls, and all windows in the work area with plastic sheeting sealed
with tape. Shut down all forced-air ventilation to the work area and seal
exhaust and intake ducts.
(2)
Construct double barriers of plastic sheeting at all entrances and exits to the
work area. Construct double barriers at entrances to a separate three-stage
decontamination station with the work area to be used for removal of
contaminated protective clothing and for storage of contaminated items and
tools. Also provide a separate clean room where workers obtain clean protective
clothing and respirators before entering the decontamination area.
(3) Wet all areas or surfaces that contain or
may contain friable asbestos before removal. Ensure that the
asbestos-containing materials remain wet during the removal process.
(4) Not use the glove bag technique on
projects subject to NESHAP.
(5)
Ensure that all persons not involved in the asbestos project are out of the
area before beginning abatement.
E. Exemptions.
(1) The Department may, on a case-by-case
basis, approve an alternative procedure for control of emissions from an
asbestos project provided that the person submits a written description of the
alternative procedure to the Department and demonstrates to the satisfaction of
the Department that compliance with the prescribed procedures is not practical
or not feasible, or that the proposed alternative procedure provides equivalent
control of asbestos. The Department, following its review, may approve an
alternative procedure if it determines that it will minimize the emissions of
asbestos into the air. The Department shall respond to a written request within
10 working days of receipt of the request.
(2) A person may not be exempt from the
requirements of 40 CFR Part
61, except as provided there.