California Code of Regulations › Title 22 - Social Security › Division 4.5 - Environmental Health Standards for the Management of Hazardous Waste › Chapter 14 - Standards for Owners and Operators of Hazardous Waste Transfer, Treatment, Storage, and Disposal Facilities › Article 10 - Tank Systems › Section 66264.191 - Assessment of Existing Tank System's Integrity

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Tanks shall have sufficient shell
				  strength and, for closed tanks, pressure controls (e.g., vents) to assure that
				  they do not collapse or rupture. The Department will review the design of the
				  tanks, including the foundation, structural support, seams and pressure
				  controls and seismic considerations. The Department shall require that a
				  minimum shell thickness be maintained at all times to ensure sufficient shell
				  strength. Factors to be considered in establishing minimum thickness include
				  the width, height and materials of construction of the tank, and the specific
				  gravity of the waste which will be placed in the tank. In reviewing the design
				  of the tank and approving a minimum thickness, the Department shall rely upon
				  appropriate industrial design standards and other available
				  information.
(b) For each existing
				  tank system that does not have secondary containment meeting the requirements
				  of section
				  66264.193, the owner or operator
				  shall determine that the tank system is not leaking or is unfit for use. Except
				  as provided in subsections (d) and (g) of this section, and in addition to the
				  requirements of subsection (f) of this section, the owner or operator shall
				  obtain and keep on file at the facility a written assessment reviewed and
				  certified by an independent, qualified professional engineer, registered in
				  California, in accordance with section
				  66270.11(d), that
				  attests to the tank system's integrity.
(c) This assessment shall determine that the
				  tank system is adequately designed and has sufficient structural strength and
				  compatibility with the waste(s) to be transferred, stored or treated, to ensure
				  that it will not collapse, rupture, or fail. At a minimum, this assessment
				  shall consider the following:
(1) design
				  standard(s), if available, according to which the tank and ancillary equipment
				  were constructed;
(2) hazardous
				  characteristics of the waste(s) that have been and will be handled;
(3) existing corrosion protection
				  measures;
(4) documented age of the
				  tank system, if available (otherwise, an estimate of the age);
(5) results of a leak test, internal
				  inspection, or other tank integrity examination such that:
(A) for non-enterable underground tanks, the
				  assessment shall include a leak test that is capable of taking into account the
				  effects of temperature variations, tank end deflection, vapor pockets, and high
				  water table effects, and
(B) for
				  other than non-enterable underground tanks and for ancillary equipment, this
				  assessment shall include either a leak test, as described above, or other
				  integrity examination, that is certified by an independent, qualified,
				  professional engineer, registered in California, in accordance with section
				  66270.11(d), that
				  addresses cracks, leaks, corrosion, and erosion; and
(6) those design requirements and factors
				  listed in subsection (a) of this section.