Haw. Code R. § 11-280.1-24 - Secondary containment design
(a) Secondary
containment systems must be designed, constructed, and installed to:
(1) Contain regulated substances leaked from
the primary containment until they are detected and removed;
(2) Prevent the release of regulated
substances to the environment at any time during the operational life of the
UST system; and
(3) Be checked for
evidence of a release at least every thirty-one days.
(b) Double-walled tanks must be designed,
constructed, and installed to:
(1) Contain a
leak from any portion of the inner tank within the outer wall; and
(2) Detect the failure of the inner
wall.
(c) External liners
(including vaults) must be designed, constructed, and installed to:
(1) Contain one hundred percent of the
capacity of the largest tank within its boundary;
(2) Prevent precipitation and groundwater
intrusion from interfering with the ability to contain or detect a leak or
release of regulated substances; and
(3) Surround the UST completely to
effectively prevent lateral and vertical migration of regulated
substances.
Notes
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(a) Secondary containment systems must be designed, constructed, and installed to:
(1) Contain regulated substances leaked from the primary containment until they are detected and removed;
(2) Prevent the release of regulated substances to the environment at any time during the operational life of the UST system ; and
(3) Be checked for evidence of a release at least every thirty-one days.
(b) Double-walled tanks must be designed, constructed, and installed to:
(1) Contain a leak from any portion of the inner tank within the outer wall; and
(2) Detect the failure of the inner wall.
(c) External liners (including vaults) must be designed, constructed, and installed to:
(1) Contain one hundred percent of the capacity of the largest tank within its boundary;
(2) Prevent precipitation and groundwater intrusion from interfering with the ability to contain or detect a leak or release of regulated substances; and
(3) Surround the UST completely to effectively prevent lateral and vertical migration of regulated substances.