Section Env-Or 306.09 - Interior Inspections of ASTs(a) The owner of an AST facility shall have a detailed inspection performed of the interior of each tank at the facility that has a capacity of 5,100 gallons or more in accordance with the schedule specified in (c), below, and the procedures specified in (d), below.(b) All detailed interior tank inspections shall be performed by a certified AST inspector.(c) Detailed inspections of tank interiors as described in (d), below, shall be performed in accordance with the following schedule: (1) For tanks where any part of the shell is in contact with the ground, the initial inspection for previously uninspected tank systems shall be performed when the tank is 10 years old;(2) For tanks where the tank shell is entirely off the ground, such as tanks on racks or in cradles, the initial inspection for previously uninspected tank systems shall be performed when the tank is 20 years old; and(3) Following the initial inspection, an inspection shall be performed at least every 5 years for tank systems containing gasoline, and at least once every 10 calendar years of the in-service life of the tank for tank systems containing other motor fuels, heating oils, and fuel oils.(d) Detailed interior tank inspections shall consist of: (1) Cleaning the tank such that all visible evidence of liquids, sludges, by-products, solids, and the like are removed and the interior surface of the tank is completely visible;(2) Removing, transporting, and disposing of sludge in a manner consistent with all applicable state and federal requirements;(3) Entering the tank to determine its suitability for continued service in accordance with API 653 or STI SP001, as applicable; and(4) Performing a tightness test in accordance with NFPA 30 or manufacturer's specifications on any portion of the piping system that is underground.(e) The certified AST inspector shall document each interior inspection by: (1) Recording the information required by Env-Or 306.06(a) in a document that is provided to the owner to be maintained as specified in Env-Or 304.06, provided that the information required by Env-Or 306.06(a)(4) shall be whether any conditions that adversely affect the tank's suitability for continued service as specified in API 653 or STI SP001 were observed; and(2) Signing the report as specified in Env-Or 306.06(b)-(c).(f) Within 60 days of the date of the inspection, the owner shall submit to the department a copy of the inspection results and the certification page signed by the certified AST inspector and including the inspector's API or STI certification number or professional engineer stamp.N.H. Admin. Code § Env-Or 306.09
(See Revision Note at chapter heading for Env-Or 300) #10487, eff 2-7-14