Md. Code Regs. 26.13.05.10 - General Requirements for Hazardous Waste Management in Tank Systems
A. Applicability.
(1) Owners and operators of facilities that
use tank systems to treat or store hazardous waste shall comply with the
requirements of this regulation and Regulations .10-1-.10-7 of this chapter,
except as otherwise provided in §A(2), (3), and (5) of this regulation or
in Regulation .01 of this chapter.
(2) Tank systems that are used to store or
treat hazardous waste which contains no free liquids and are situated inside a
building with an impermeable floor are exempted from the requirements of
Regulation .10-4 of this chapter. To determine whether a waste contains free
liquids, a person shall use EPA Method 9095 (Paint Filter Liquids Test) as
described in "Test Methods for Evaluating Solid Wastes, Physical/Chemical
Methods" (EPA Publication SW-846), which is incorporated by reference in COMAR
26.13.01.05 o A(4).
(3) Tank systems, including sumps as defined
in COMAR 26.13.01.03 o B, that serve as
part of a secondary containment system to collect or contain releases of
hazardous wastes, are exempted from the requirements of Regulation .10-4A of
this chapter.
(4) For the purposes
of classifying a tank system as either new or existing, installation of the
tank system is considered to have begun if the following criteria are met:
(a) The owner or operator has obtained all
federal, State, and local approvals or permits necessary to begin physical
construction of the site or installation of the tank system; and
(b) A continuous on-site physical
construction or installation program has begun, or the owner or operator has
entered into contractual obligations, which cannot be canceled or modified
without substantial loss, for either completion of physical construction of the
site or installation of the tank system within a reasonable time.
(5) Tanks, sumps, and other
collection devices or systems used in conjunction with drip pads as defined in
COMAR 26.13.01.03 o B and regulated
under Regulations .17-1-.17-4 of this chapter are subject to the requirements
of this regulation and Regulations .10-1-.10-7 of this chapter.
B. Waste Analysis and Trial Tests.
In addition to the waste analysis required by Regulation .02D of this chapter,
whenever a tank is to be used to chemically treat or store a hazardous waste
which is substantially different from waste previously treated or stored in
that tank, or chemically treat hazardous waste with a substantially different
process than any previously used in that tank, the owner or operator shall,
before treating or storing the different waste or using the different process:
(1) Conduct waste analysis and trial
treatment or storage tests, such as bench scale or pilot plant scale tests;
or
(2) Obtain written, documented
information on similar storage or treatment of similar waste under similar
operating conditions, to show that this proposed treatment or storage will meet
the requirements of §C(1) of this regulation.
C. General Operating Requirements.
(1) A person may not place hazardous wastes
or treatment reagents in a tank system if they could cause the tank, its
ancillary equipment, or the containment system to rupture, corrode, leak, or
otherwise fail.
(2) Overfilling.
The owner or operator shall use appropriate controls and practices to prevent
spills and overflows from tank or containment systems, and, at a minimum, shall
employ the following controls and practices to comply with this requirement:
(a) Controls to prevent overfilling, such as
level sensing devices, high level alarms, automatic feed cutoff, or by-pass to
a standby tank;
(b) For uncovered
tanks, maintenance of sufficient freeboard to prevent overtopping by wave or
wind action or by precipitation; and
(c) Spill prevention controls, such as check
valves or dry disconnect couplings.
(3) The owner or operator shall comply with
the requirements of Regulation .10-6 of this chapter if a leak or spill occurs
in the tank system.
D.
Inspections. The owner or operator shall:
(1)
Develop and follow a schedule and procedure for inspecting overfill
controls;
(2) Inspect at least once
each operating day:
(a) Data gathered from
monitoring and leak detection equipment, such as pressure and temperature
gauges and monitoring wells, to ensure that the tank system is being operated
according to its design;
(b) For
uncovered tanks, the level of waste in the tank to ensure compliance with
§C(2)(b) of this regulation;
(c) Above-ground portions of the tank system
to detect corrosion or releases of waste; and
(d) The construction materials of, and the
area immediately surrounding the externally accessible portion of the tank
system, including the secondary containment system, to detect erosion or signs
of releases of hazardous wastes, such as wet spots or dead
vegetation;
(3) Inspect
cathodic protection systems, if present, according to, at a minimum, the
following schedule to ensure that they are functioning properly:
(a) Confirm proper operation of the cathodic
protection system within 6 months after initial installation and annually after
that; and
(b) Inspect or test, or
both, as appropriate, all sources of impressed current at least every 2
months;
(4) Develop, as
part of the inspection schedule required in Regulation .02F of this chapter,
and in addition to the specific requirements of §D(1)-(3) of this
regulation, a schedule and procedures for assessing the condition of the tank
which meet the following requirements:
(a) The
schedule and procedures shall be adequate to detect cracks, leaks, corrosion,
or erosion which may prevent compliance with §C(1) of this
regulation;
(b) The inspection
procedure shall include procedures for emptying a tank to allow entry and
inspection of the interior when tank entry is necessary to detect corrosion or
erosion of the tank sides and bottom; and
(c) The scheduled frequency of assessments
shall be based on the material of construction of the tank, type of corrosion
or erosion protection used, rate of corrosion or erosion observed during the
previous inspections, and the characteristics of the waste being treated or
stored;
(5) Document, in
the operating record of the facility, inspections of the items required to be
made in §D(1)-(4) of this regulation.
E. Air Emissions. The owner or operator shall
provide all tanks with the treatment process controls, emission controls, and
safety or emergency procedures that are necessary to protect human health and
the environment from toxic or otherwise harmful fumes, mists, or gases
resulting from:
(1) Volatilization of wastes
stored or treated in the tank;
(2)
Chemical reactions in the tank, either routine or resulting from process
upsets; or
(3) Physical agitation
or other forms of treatment conducted in the tank.
Notes
Regulations .10D, F amended, effective February 13, 1984 (11:3 Md. R. 202)
Regulations .10 amended effective January 31, 1983 (10:2 Md. R. 110)
Regulations .10D amended, effective July 30, 1984 (11:15 Md. R. 1330)
Regulation .10D, E amended effective April 18, 1988 (15:8 Md. R. 1009)
Regulation .10I adopted effective April 18, 1988 (15:8 Md. R. 1009)
Regulations .10-7 adopted effective May 24, 1993 (20:10 Md. R. 853)
Regulation .10G amended effective December 23, 1991 (18:25 Md. R. 2759)
Regulation .10A amended effective September 10, 1997 (24:5 Md. R. 413)
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