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settlement, vibration, expansion or contraction.
<br />(f) The owner or operator shall provide the type and degree of corrosion protection necessary, based on the
<br />information provided under subsection (a)(3) of this section, to ensure the integrity of the tank system during use
<br />of the tank system. The installation of a corrosion protection system that is field fabricated shall be supervised by
<br />an independent corrosion expert to ensure proper installation.
<br />(g) The owner or operator shall obtain and keep on file at the facility written statements by those persons required
<br />to certify the design of the tank system and supervise the installation of the tank system in accordance with
<br />the requirements of subsections (b) through (f) of this section to attest that the tank system was properly designed
<br />and installed and that repairs, pursuant to subsection (b) and (d) of this section were performed. These written
<br />statements shall also include the certification statement as required in section 66270.11(d) of this division.
<br />(h)(1) Notwithstanding subsections (a) through (g) of this section, design and installation of new tank systems or
<br />components used to manage hazardous waste, and which meet the criteria specified in subsection (h)(2) of this
<br />section, are not subject to the requirements of subsections (h) through (m) of this section until January 24, 1998.
<br />The assessment specified in subsection (k) of this section shall be obtained prior to placing a new tank system in
<br />service and shall be kept on file at the facility. This assessment shall be reviewed and certified by an independent,
<br />qualified, professional engineer, registered in California, in accordance with section 66270.11(d), attesting that the
<br />tank system has sufficient structural integrity and is acceptable for the transferring, storing and treating of
<br />hazardous waste. The assessment shall be valid for a maximum period of five (5) years or the remaining service
<br />life of the tank system, as stated in the engineer's assessment, whichever is less. New tank systems that have
<br />been assessed pursuant to subsections (a) through (g) of this section prior to June 1, 1995 are not required to be
<br />reassessed pursuant to subsection (k) for a period of five years from the date of the assessment or June 1, 2000,
<br />whichever is the earlier date. If changes have been made to the tank system or new components have been
<br />added to the tank system subsequent to an assessment conducted prior to June 1, 1995, the tank system shall be
<br />reassessed pursuant to subsection (k).
<br />(2) The provisions of subsection (h)(1) of this section apply only to:
<br />(A) onground or aboveground tank systems containing only non-RCRA hazardous wastes generated onsite, and
<br />tank systems authorized under Permit -by -Rule pursuant to Chapter 45 of this division, Conditional Authorization
<br />pursuant to HSC 25200.3, and Conditional Exemption pursuant to HSC 25201.5, and
<br />(B) onground or aboveground tank systems containing RCRA hazardous wastes generated onsite, if:
<br />1. the owner or operator is a conditionally exempt small quantity generator as defined in 40 CFR section 261.5, or
<br />a small quantity generator of more than 100 kg but less than 1000 kg per month as defined in 40 CFR section
<br />265.201, or
<br />2. the owner or operator is not subject to regulation in 40 CFR part 265 pursuant to an exemption in 40 CFR
<br />section 265.1, but the owner or operator is subject to the standards of this article.
<br />(i) A generator or owner or operator authorized pursuant to Permit -by -Rule pursuant to Chapter 45 of this division,
<br />Conditional Authorization pursuant to HSC 25200.3, or Conditional Exemption pursuant to HSC 25201.5,
<br />operating a non-RCRA underground tank system or an underground tank system otherwise exempt from
<br />permitting requirements pursuant to the federal act, shall comply with the applicable standards of Title 23 of the
<br />California Code of Regulations relating to underground tank systems.
<br />(j) New, onground or aboveground non-RCRA tank systems or tank systems otherwise exempt from permitting
<br />requirements pursuant to the federal act, with secondary containment, whose design and installation have been
<br />approved by a local agency or agencies, may, at the discretion of the CUPA, be exempt from the engineering
<br />assessment specified in subsection (k) of this section, provided minimum criteria specified in subsections 0)(1)
<br />through 0)(3) of this section are met. If the CUPA determines to exempt a new tank system from the assessment
<br />required pursuant to this subsection, the exemption shall be for a period of not more than three (3) years from the
<br />date the exemption was granted. The tank system owner or operator shall submit documentation of local agency
<br />approval to the applicable CUPA for review and possible acceptance in lieu of the assessment specified in
<br />subsection (k) of this section. If there is no CUPA, or the CUPA requests that the Department make a
<br />determination, the documentation shall be submitted to the Department.
<br />(1) tank system must have secondary containment capable of containing 100 percent of the contents of the tank
<br />and ancillary piping volume; and
<br />(2) if tank system is exposed to precipitation, the secondary containment system must have sufficient capacity, in
<br />addition to that required in subsection 0)(1) of this section, to contain run-on and infiltration from a 25 -year, 24-
<br />hour rainfall event;
<br />(3) tank system secondary containment shall be provided with a leak detection system that is designed and
<br />operated so that it will detect either the failure of the primary and secondary containment structure or any release
<br />of hazardous waste or accumulated liquid in the secondary containment system within 24 hours, or at the earliest
<br />practicable time if the existing detection technology or site conditions will not allow detection of a release within 24
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