Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-215-124

(1) Septic tanks;

(2) Farm or residential tanks of one thousand one hundred gallons (1,100 gal.) or less used for storing motor fuel for noncommercial purposes;

(3) Tanks used for storing heating oil for consumption on the premises where stored;

(4) Pipeline facilities (including gathering lines) regulated under:

(5) Surface impoundments, pits, ponds, or lagoons;

(6) Storm water or waste water collection systems;

(7) Flow-through process tanks;

(8) Liquid traps or associated gathering lines directly related to oil or gas production and gathering operations;

(9) Petroleum storage tanks situated in an underground area (such as a basement, cellar, mine working, drift, shaft, or tunnel) if the storage tank is situated upon or above the surface of the floor; and

(10) Pipes or connections connected to exempted tanks.