Current through Register Vol. 24-06, March 15, 2024
(1) Applicability. The regulations in this
section apply to owners and operators of all dangerous waste facilities that
store dangerous waste in containers.
(2) Condition of containers. If a container
holding dangerous waste is not in good condition (e.g., severe corroding or
rusting or flaking or scaling, and/or apparent structural defects) or if it
begins to leak, the owner or operator must transfer the dangerous waste from
the container to a container that is in good condition or manage the waste in
some other way that complies with the requirements of chapter 173-303 WAC. In
addition, the owner or operator must address leaks and spills in accordance
with the applicable provisions of WAC
173-303-145
and
173-303-360.
(3) Identification of containers. The owner
or operator storing dangerous waste in containers must do the following:
(a) Clearly label or mark containers with the
words "Dangerous Waste" or "Hazardous Waste." Except for containers one gallon
(or four liters) and under, the lettering must be legible from a distance of
twenty-five feet or the lettering size is a minimum of one-half inch in
height.
(b) Clearly label or mark
containers with an indication of the hazards of the contents (examples include,
but are not limited to, the applicable dangerous waste characteristic(s) and
criteria of ignitable, corrosive, reactive and toxic and the applicable
hazard(s) identified for listed dangerous wastes). The label or marking must
be:
(i) Legible and/or recognizable from a
distance of twenty-five feet or the lettering size is a minimum of one-half
inch in height; and
(ii) Include
descriptive word(s) and/or pictogram(s) that identifies the hazards associated
with the contents of the containers for employees, emergency response
personnel, waste handlers, and the public; for containers one gallon (or four
liters) and under the label, marking or lettering can be appropriate for the
size of the container.
(c) Affix labels upon transfer of dangerous
wastes from one container to another. The owner or operator must destroy or
otherwise remove labels from the emptied container, unless the container will
continue to be used for storing dangerous waste at the facility.
(d) Ensure that labels are not obscured,
removed, or otherwise unreadable in the course of inspection required under WAC
173-303-320.
(4) Compatibility of waste with containers.
The owner or operator must use a container made of or lined with materials
which will not react with, and are otherwise compatible with, the dangerous
waste to be stored, so that the ability of the container to contain the waste
is not impaired.
(5) Management of
containers.
(a) A container holding dangerous
waste must always be closed, except when it is necessary to add or remove
waste.
(b) A container holding
dangerous waste must not be opened, handled, or stored in a manner which may
rupture the container or cause it to leak.
(c) A minimum thirty-inch aisle space
separation is required between rows of containers. A row of containers must be
no more than two wide and allow for unobstructed inspection of each
container.
(6)
Inspections. The owner or operator must conduct "weekly inspections" (as
defined in WAC
173-303-040 ), of
areas where containers are stored, looking for leaking containers and for
deterioration of containers and the containment system caused by corrosion,
deterioration, or other factors. The owner or operator must keep a written or
electronic inspection log including at least the date and time of the
inspection, the printed name and the handwritten or electronic signature of the
inspector, a notation of the observations made and the date and nature of any
repairs or remedial actions taken. The log must be kept at the facility for at
least five years from the date of inspection.
(7) Containment.
(a) Container storage areas must have a
containment system that is capable of collecting and holding spills and leaks.
In addition to the necessary leak containment capacity, uncovered storage areas
must be capable of holding the additional volume that would result from the
precipitation of a maximum twenty-five year storm of twenty-four hours
duration. The containment system must:
(i)
Have a base underlying the containers which is free of cracks or gaps and is
sufficiently impervious to contain leaks, spills, and accumulated rainfall
until the collected material is detected and removed. The base must be sloped
or the containment system must be otherwise designed and operated to drain and
remove liquids resulting from leaks, spills, or precipitation, unless the
containers are elevated or are otherwise protected from contact with
accumulated liquids;
(ii) Be
designed for positive drainage control (such as a locked drainage valve) to
prevent release of contaminated liquids and so that uncontaminated
precipitation can be drained promptly for convenience of operation. Spilled or
leaked waste and accumulated precipitation must be removed from the containment
system in as timely a manner as is necessary to prevent overflow; and
(iii) Have sufficient capacity to contain ten
percent of the volume of all containers or the volume of the largest container,
whichever is greater. Only containers holding free liquids, or holding wastes
designated as F020, F021, F022, F023, F026, or F027 need to be considered in
this determination.
(b)
Run-on into the containment system must be prevented, unless the department
waives this requirement in the permit after determining that the collection
system has sufficient excess capacity in addition to that required in (a)(iii)
of this subsection to accommodate any run-on which might enter the
system.
(c) Storage areas that
store containers holding only wastes that do not contain free liquids, do not
exhibit either the characteristic of ignitability or reactivity as described in
WAC
173-303-090(5) or
(7), and are not designated as F020, F021,
F022, F023, F026, or F027, need not have a containment system as described in
this subsection: Provided, That:
(i) The
storage area is sloped or is otherwise designed and operated to drain and
remove liquid resulting from precipitation; or
(ii) The containers are elevated or are
otherwise protected from contact with accumulated liquids.
(d) The department may require owners and
operators to protect their containers from the elements by means of a building
or other protective covering if the department determines that such protection
is necessary to prevent a release of waste or waste constituents due to the
nature of the waste or design of the container. The building or other
protective covering must allow adequate inspection under subsection (6) of this
section.
(8) Special
requirements for ignitable or reactive waste.
(a) Containers holding reactive waste
exhibiting a characteristic specified in WAC
173-303-090(7)(a)(vi),
(vii) or (viii) must be stored in a manner
equivalent to the separation distances for storage of explosives in the
International Fire Code, 2015 edition, or the version adopted by the local fire
district.
(b) The owner or operator
must design, operate, and maintain ignitable waste and reactive waste (other
than a reactive waste which must meet (a) of this subsection) container storage
in a manner equivalent with the International Fire Code. Where no specific
standard or requirements are specified in the International Fire Code, or in
existing state or local fire codes, applicable sections of the NFPA 30
"Flammable and Combustible Liquids Code," must be used. The owner/operator must
also comply with the requirements of WAC
173-303-395(1)(d).
(9) Special requirements for incompatible
wastes.
(a) Incompatible wastes, or
incompatible wastes and materials must not be placed in the same container,
unless WAC
173-303-395(1)(b)
is complied with.
(b) Dangerous
waste must not be placed in an unwashed container that previously held an
incompatible waste or material.
(c)
A storage container holding a dangerous waste that is incompatible with any
waste or other materials stored nearby in other containers, piles, open tanks,
or surface impoundments must be separated from the other materials or protected
from them by means of a dike, berm, wall, or other device. Containment systems
for incompatible wastes must be separate.
(10) Closure. At closure, all dangerous waste
and dangerous waste residues must be removed from the containment system.
Remaining containers, liners, bases, and soil containing or contaminated with
dangerous waste or dangerous waste residues must be decontaminated or
removed.
(11) Air emission
standards. The owner or operator must manage all hazardous waste placed in a
container in accordance with the applicable requirements of 40 C.F.R. Part 264,
Subparts AA, BB, and CC, which are incorporated by reference at WAC
173-303-690
through
173-303-692.
Statutory Authority:
Chapters
70.105,
70.105D, and
15.54 RCW and
RCW
70.105.007. 04-24-065 (Order 03-10), §
173-303-630, filed 11/30/04, effective 1/1/05; 00-11-040 (Order 99-01), §
173-303-630, filed 5/10/00, effective 6/10/00. Statutory Authority:
Chapters
70.105 and
70.105D RCW. 95-22-008 (Order
94-30), § 173-303-630, filed 10/19/95, effective 11/19/95; 94-01-060
(Order 92-33), § 173-303-630, filed 12/8/93, effective 1/8/94. Statutory
Authority:
Chapters
70.105 and
70.105D RCW, 40 C.F.R. Part 271.3
and RCRA § 3006 ( 42 U.S.C. 3251 ). 91-07-005 (Order 90-42), §
173-303-630, filed 3/7/91, effective 4/7/91. Statutory Authority:
Chapter
70.105 RCW. 86-12-057
(Order DE-85-10), § 173-303-630, filed 6/3/86; 84-09-088 (Order DE 83-36),
§ 173-303-630, filed 4/18/84. Statutory Authority:
Chapter
70.105 RCW and
RCW
70.95.260. 82-05-023 (Order DE 81-33), §
173-303-630, filed 2/10/82.