(A) If there has been a leak or release of hazardous materials from an underground storage facility or tank system or any part thereof not under pressure, the owner or permit holder may repair the tank once by an interior coating process if the tank meets all of the following criteria:
(1) An inspector qualified to check tank interiors for possible damage shall enter the tank and inspect the entire surface and certify that the shell will provide structural support for interior lining;
(2) The material used to repair the tank by an interior coating process is approved by the city as compatible with the hazardous materials to be stored in the tank;
(3) The material used to repair the tank by an interior coating process is applied by a person holding a valid underground tank installer or on-site supervisor license issued by the State of Texas and in accordance with nationally recognized engineering practices, such as American Petroleum Institute Publication #1631;
(4) Each interior lined steel tank shall be protected from corrosion through the use of an engineered, properly maintained and installed cathodic protection system;
(5) Before the tank is placed back in service following the repair, the tank is tested in operating condition using a precision test method. The precision test shall not be performed by the owner or operator of the tank or by an employee of the owner or operator; and
(6) The permit holder shall notify the city of his or her intent to interior line an underground storage tank and shall apply for authorization on forms provided by the city. No work shall commence prior to the city's approval of such application. The permit holder shall submit documentation of interior lining and cathodic protection to the city no later than 30 days after the tank has been interior lined.
(B) If there has been no leak or release from an underground storage tank containing hazardous materials not under pressure, the permit holder may line the interior of the tank as a preventative measure in accordance with the requirements in division (A)(6) above.
(C) Damaged piping shall not be repaired, but shall instead be replaced.