1. (a) Injection pressure at the wellhead shall not exceed a maximum, as specified in the permit or commission order, which shall be calculated so as to assure that the pressure in the injection zone during injection does not:

   1. (1) initiate new fractures or propagate existing fractures in the injection zone;
   2. (2) initiate fractures in the confining zone; or
   3. (3) cause the migration of injection or formation fluids into USDWs.
2. (b) Injection between the outermost casing protecting USDWs and the wellbore is prohibited.

Source Note:The provisions of this §331.83 adopted to be effective May 13, 1986, 11 TexReg 1984; amended to be effective April 28, 1997, 22 TexReg 3526.