(a) Any person, owning or possessing storage tanks containing materials classified as being capable of contaminating any public water supply or capable of endangering human health or the environment within the city and within one mile of the boundaries of the city shall provide protection against leakage or rupture of those tanks or connections thereto. These materials shall include, but not be limited to, hazardous materials as set forth in 49 C.F.R. part 172.101, as amended, the National Registry of Hazardous Materials, United Nations Classification System (cf Guidebook for Hazardous Materials, Department of Transportation, p. 5800.4) and hazardous wastes as set forth in 40 C.F.R. part 261, a copy of which is available at the public library.
(b) All tank systems shall be designed and installed in accordance with sound, recognized engineering practices. All tank systems shall meet or exceed the following standards.
(1) Tanks and appurtenances must be compatible with materials stored or handled.
(2) All tanks installed underground in the city and within one mile of the boundaries of the city must first be granted a permit for installation from the fire prevention division and have approval of the state department of environment and natural resources.
A. All metallic tanks must be approved double-wall design, cathodically protected and coated with a material approved by the state department of environment and natural resources.
B. All nonmetallic tanks must be of approved double-wall design.
(3) All underground tanks must be equipped with a continuous leak detection system capable of immediately detecting a leak and giving audible and visible alarms.
(4) All tanks must be equipped with overfill protection devices. These devices must alert the transfer operator that the tank is 90% full or automatically shut off flow to the tank when the tank is no more than 95% full. All tanks must be equipped with a spill containment basin.
(5) All fluid-handling piping shall be of double-walled design and shall include double-wall containment at the tank and to grade under any dispensing device.
A. All metallic piping shall be cathodically protected and coated with a material approved by the state department of environment and natural resources and tested as required by the city’s fire code before it is covered with approved backfill.
B. All nonmetallic piping shall be installed in accordance with the manufacturer’s recommended instructions and tested as required by the city’s fire code.
(6) Piping on pressure systems shall be equipped with leak detection devices that will promptly notify the operator of a problem in the system in one or more of the following manners:
A. Slow down the rate of dispensing to one-third its normal rate;
B. Give an audible and visible warning through the tank alarm panel; and
C. Completely stop the flow of the material to the dispenser.
(c) Any aboveground tanks shall be diked on the side and on the bottom with materials impervious to contaminants. The volume of the dike must be adequate to contain 110% of the volume of the largest tank and must conform with other provisions set forth in the International Fire Code, Chapter 34, § 3404.2.10.1, as amended. Diking must be approved by the fire prevention division.
(d) System plans must be submitted to the city fire department for review by appropriate city departments. Plans shall be approved or rejected within ten working days. Permits must be issued by the city fire department before any work proceeds.
(e) Any person owning or operating a tank system shall immediately notify Metro Communications of any alarm, spill or leak.
(1957 Rev. Ords., § 14.506; 1992 Code, § 19-13) (Ord. 2774, passed 7-26-1971; Ord. 90-86, passed 10-6-1986; Ord. 12-89, passed 1-30-1989; Ord. 79-02, passed 10-15-2002) Penalty, see § 10.999