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inner wall of the tank, and is designed with release detection in accordance with LAC 33:XI.701.A.6.a; or
ii.it is some other secondarily-contained tank system approved by the department prior to installation.
2.Piping. Piping on new UST systems that routinely contains regulated substances and is in contact with the ground or water must be properly designed, constructed, and protected from corrosion in accordance with Subsection A of this Section and as described below:
a.the piping is constructed of fiberglass-reinforced plastic; or
b.the piping is constructed of metal and cathodically protected in the following manner:
i.the piping is coated with a suitable dielectric material;
ii.field-installed cathodic protection systems are designed by a corrosion expert;
iii.impressed current systems are designed to allow determination of current operating status as required in LAC 33:XI.503.A.3; and
iv.cathodic protection systems are operated and maintained in accordance with LAC 33:XI.503 or guidelines established by the department; or
c.the piping is constructed of metal without additional corrosion protection measures, provided that:
i.the piping is installed at a site that a corrosion expert determines is not corrosive enough to cause the piping to have a release due to corrosion during its operating life; and
ii.owners and operators maintain records that demonstrate compliance with the requirements of Clause D.2.c.i of this Section for the remaining life of the piping; or
d.the piping construction and corrosion protection are determined by the department to be designed to prevent the release or threatened release of any stored regulated substance in a manner that is no less protective of human health and the environment than the requirements in Subparagraphs D.2.a-c, e, and f of this Section; or
e.the piping is of double-walled non-metallic flexible or semi-rigid construction;
f.if piping connected to a UST is installed or replaced after December 20, 2008, along with meeting the requirements of Subparagraphs D.2.a-e of this Section, the piping employs secondary containment, as defined in LAC 33:XI.103, as follows:
i.any of the accepted piping designs listed in Subparagraphs D.2.a-e of this Section shall be fabricated with double-walled or jacketed construction in accordance with Subsection A of this Section, shall be capable of containing a release from the inner wall of the piping, shall be designed with release detection in accordance with LAC 33:XI.701.B.4; or
ii.the piping system shall have some other form of secondary containment system approved by the department prior to installation; and
g.if 25 percent or more of the piping to any one UST is replaced after December 20, 2008, it shall comply with Clause D.2.f.i or ii of this Section. If a new motor fuel dispenser is installed at an existing UST facility and new piping is added to the UST system to connect the new dispenser to the existing system, then the new piping shall comply with Clause D.2.f.i or ii of this Section. Suction
piping that meets the requirements of LAC 33:XI.703.D.2.b.i–v and suction piping that manifolds two or more tanks together are not required to meet the secondary containment requirements outlined in this Paragraph.
3.Spill and Overfill Prevention Equipment
a.Except as provided in Subparagraph D.3.b of this Section, to prevent spilling and overfilling associated with product transfer to the UST system, owners and operators must use:
i.spill prevention equipment that will prevent release of product to the environment when the transfer hose is detached from the fill pipe (for example, a spill bucket). Spill buckets shall have liquid-tight sides and bottoms and be maintained free of regulated substances. Regulated substances spilled into any spill bucket shall be immediately removed by the UST owner and/or operator or the bulk fuel distributor. The presence of greater than one inch of regulated substances in a spill bucket is a violation of this Section and may result in issuance of an enforcement action to the UST owner and/or operator and the bulk fuel distributor, common carrier, or transporter; and
ii.overfill prevention equipment that will:
(a).automatically shut off flow into the tank when the tank is no more than 95 percent full;
(b).alert the transfer operator when the tank is no more than 90 percent full by restricting the flow into the tank or triggering a high-level alarm; or
(c).restrict flow 30 minutes prior to overfilling, or alert the operator with a high-level alarm one minute before overfilling, or automatically shut off flow into the tank so that none of the fittings on top of the tank are exposed to product because of overfilling.
b.Owners and operators are not required to use the spill and overfill prevention equipment specified in Subparagraph D.3.a of this Section if:
i.alternative equipment is used that the department determines is no less protective of human health and the environment than the equipment specified in Clause D.3.a.i or ii of this Section; or
ii.the UST system is filled by transfers of no more than 25 gallons at one time.
4.Under-Dispenser Secondary Containment. After December 20, 2008, under-dispenser containment sumps:
a.are required under the following conditions:
i.in any installation of a new dispenser at a new facility;
ii.in any installation of a new dispenser at an existing facility where new piping is added to the UST system to connect the new dispenser to the existing system;
iii.in any installation of a replacement dispenser at an existing facility where the piping that connects the dispenser to the existing piping is replaced, including replacing the metal flexible connector, riser, or other transitional components that are beneath the dispenser and the impact shear valve and that connect the dispenser to the piping. Replacing an existing dispenser where no piping and none of the piping that connects the dispenser to the existing piping are replaced does not require the addition of an under-dispenser containment sump; and
b.shall have liquid-tight sides and bottoms and be maintained free of storm water and debris. Regulated

Louisiana Register   Vol. 34, No. 10   October 20, 2008

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