A. 
Every owner of an underground gasoline storage system shall register with the Board of Health the size, type, age and location of each tank, and the type of material stored, on or before June 1, 1985. Information on the date of purchase, date of installation, and evidence of the issuance of a Fire Department permit shall be provided as part of such registration.
B. 
Owners of storage systems for which evidence of installation date is not available shall, by order of the Board of Health, have such tanks tested or uncovered for inspection. If, in the opinion of the Board of Health or the Fire Chief, the tank is not product tight, it shall be removed forthwith at the owner's expense.
A. 
All underground gasoline storage tanks and piping systems shall be subject to a Petro-Tite (Kent-Moore) or leak locator test, or any other state-approved test providing equivalent safety and effectiveness in the opinion of the Nantucket Board of Health. Such tests shall be conducted prior to the 10th anniversary of the installation of the tank and annually thereafter. Air-pressure tests shall not be permitted on tanks which have or have had petroleum product in them.
B. 
The Nantucket Board of Health may postpone the testing required above for new tanks installed after the effective date of these regulations until the fifth year prior to the predicted mean age to leak as established by a method of predictability analysis which is recognized by the petroleum industry and approved by the Board of Health. The method shall be based upon, at a minimum, the following factors: soil pH, soil moisture, soil conductivity, tank size, type of backfill, height of water table, tank depth, and the presence or absence of sulfides in the soils. In no case shall the "fifth year prior to mean age" be in excess of 25 years after the installation. Testing will be required annually thereafter.
All new or replacement gasoline tanks and their components shall be designed and constructed in accordance with the following specifications in order to provide maximum protection against corrosion and leakage.
A. 
Type of tank. Only the following tank systems shall be approved:
(1) 
UL-listed fiberglass-reinforced plastic (FRP) tanks. Fiberglass tanks shall be installed only by an installation contractor approved by the manufacturer of the tank.
(2) 
UL-listed steel tanks provided with cathodic protection, with a coal-tar epoxy or urethane coating and electrical isolation, and equipped with a test box to measure electrical potential.
(3) 
Steel tanks with bonded fiberglass coating, compatible inner corrosion-resistant lining and electrical isolation, the integrity of the outer coating to be verified by electrostatic testing and guaranteed by the manufacturer.
(4) 
Double-walled steel tanks with bonded fiberglass coating, electrical isolation, a vacuum of air pressure in the interstitial space and provision for continuous monitoring of the vacuum or air pressure.
(5) 
Any other "state-of-the-art" type tank construction approved by the State Fire Marshal, by the Board of Health and Fire Chief.
B. 
Striker plates. All new or replacement gasoline tanks must be equipped with a metallic or nonmetallic striker plate, at least 24 inches by 24 inches in area, at least 1/4-inch thick, and attached to the bottom of the tank under each opening.
C. 
Corrosion protection. All new or replacement tanks, including all accessory components, shall be protected against corrosion by use of noncorrosive materials or by use of cathodic protection and electrical isolation and be compatible with the product to be stored in the facility. All cathodic protection systems shall be tested annually by a qualified person and shall have at all times a negative voltage of at least 0.85 volt, as measured by a test box, between the structure being protected and a saturated copper-copper sulfate reference electrode contacting the soil electrolyte; provided that if a zinc reference electrode is used, the negative voltage must be at least 1.95 volts. These measurements shall be made with sacrificial anodes attached, or if impressed current is used, with the rectifier turned on.
D. 
Testing compatibility. All new or replacement gasoline tanks shall be designed, constructed and installed so as to allow testing for tightness or replacement without the need for disturbing elements of the storage facility other than the elements that are to be tested or replaced.
E. 
Backfilling. The Board of Health and the Fire Chief, or their agents, shall be present during the backfilling operations. The quality of the materials used for backfilling shall be subject to the approval of the Board of Health and Fire Chief, or their agents.
F. 
Testing after installation. All new or replacement tanks and their components shall be tested separately at the owner's expense, prior to being covered. The tank shall be tested hydrostatically, or by air pressure at not less than three pounds per square inch but not more than five pounds per square inch. The piping shall be tested hydrostatically to 150% of the maximum anticipated pressure of the system or tested pneumatically, after all joints and connections have been coated with soap solution, to 100% of the maximum anticipated pressure of the system, but not less than 50 pounds per square inch at the highest point of the system. After the tank and piping have been fully covered, the area paved and the tank filled with product, the tank and its piping shall be again tested, separately, at the owner's expense, by any state-approved test, not involving air pressure, which is accurate to 0.05 gallon per hour or less, after the adjustment for variables, and which is approved by the Board of Health with a certified copy of the results of all testing required by this subsection, which the Board of Health shall keep with the records for the storage facility.
Effective January 1, 1988, all underground gasoline storage systems which do not meet the design specifications as set forth in § 363-8 shall be removed and properly disposed of at an age of 20 years after installation.