(1) All new underground tanks must bear a permanent stencil, label or plate with the following information:

(2) A label which shows the information required in subdivision (a) of this section, and in section 596.2(h) of this Title, and the date of installation must be conspicuously displayed and permanently affixed at the fill port. It must be readily visible to the carrier and may be imbedded in concrete, welded to the fill port, or otherwise permanently affixed.

(1) Underground tanks must be of sufficient structural strength to withstand normal handling and use. They must be compatible with the hazardous substance to be stored and be protected or resistant to all forms of internal and external wear, vibration, shock and corrosion. They must have a stable foundation under all operating conditions and be protected from fire, heat, vacuum and pressure which might cause tank failure. If fiberglass-reinforced-plastic material is used, the material must be of sufficient density and strength to form a hard, impermeable shell which will not crack, wick, wear, soften or separate under normal service conditions. Tanks must be designed with a minimum of 30 years of useful life unless a shorter life expectancy is defined in the spill prevention report.

(2) All new underground tanks, their welds, seams and connecting fittings must be factory tested for tightness using generally accepted engineering practices. All tanks sold in New York State must be guaranteed by the manufacturer to be tight.

(3) All new underground tanks must meet the criteria of this subdivision and must be designed, constructed and installed or certified by a qualified engineer or technician in accordance with one of the following:

(1) All new underground tanks which are in contact with soil and subject to corrosion must be protected from external corrosion by one of the following:

(2) Cathodic protection must consist of one or a combination of the following:

(3) The corrosion protection system must be designed and constructed by a qualified engineer or corrosion specialist and must provide a minimum of 30 years of protection against external corrosion. The engineer or specialist must supervise the installation of all field fabricated corrosion protection systems and pre-fabricated systems where necessary to assure that the system has been installed as designed.

(4) Tanks which are protected with sacrificial anodes must be electrically insulated from the piping if the piping is constructed of a conductive material unless the cathodic protection system has been designed to protect the tank and piping. Electrical insulation must be provided by dielectric fittings, bushings, washers, sleeves or gaskets which are chemically stable when exposed to the stored substances and soil.

(5) The cathodic protection system must be installed with a monitor that allows for annual review of the adequacy of protection.

(6) The tank must be isolated from or protected against stray electric currents which include underground cables, electric machinery, railroad systems and electrical grounding rods.

(7) Tank and piping connections of two dissimilar metals which create a corrosion inducing galvanic cell are prohibited.

(8) External coatings must be fiberglass-reinforced-plastic, epoxy, or other suitable dielectric material with a minimum thickness of 10 mils after curing. The coating must be factory applied or equivalent, have a coefficient of thermal expansion compatible with that of steel and be firmly bonded to the steel. It must be of sufficient strength and density to form a hard, impermeable shell that will not crack, wick, wear, soften, flake or separate and must be non-corrodible under adverse underground electrolytic conditions. The application of the coating must be in strict accordance with the instructions of the supplier of the coating material.

(9) Coatings must be inspected for air pockets, cracks, blisters, and pinholes, and must be electrically tested for coating faults. Any defects must be repaired in accordance with the manufacturer's instructions prior to installation.