(2)
Regulations of the Administrator under this section for State underground injection control programs may not prescribe requirements which interfere with or impede—
(A)
the underground injection of brine or other fluids which are brought to the surface in connection with oil or natural gas production or natural gas storage operations, or
(B)
any underground injection for the secondary or tertiary recovery of oil or natural gas,
unless such requirements are essential to assure that underground sources of drinking water will not be endangered by such injection.