Section 122-19-002 - Specific Requirements002.01 Operating requirements for Class I injection wells shall, at a minimum, specify that: 002.01A Injection pressure at the wellhead shall not exceed a maximum which shall be calculated so as to assure that the pressure in the injection zone during injection does not initiate new fractures or propagate existing fractures in the injection zone, initiate fractures in the confining zone or cause the movement of injection or formation fluids into an underground source of drinking water;002.01B Injection between the outermost casing protecting underground sources of drinking water and the well bore is prohibited; and002.01C Unless an alternative to a packer has been approved under Chapter 17 of this Title, the annulus between the tubing and the long string of casings shall be filled with a fluid approved by the Director; and a pressure, also approved by the Director, shall be maintained on the annulus.002.02 Operating requirements for Class III injection wells shall, at a minimum, specify that: 002.02A Injection pressure at the wellhead shall not exceed a maximum which shall be calculated so as to assure that the pressure in the injection zone during injection does not initiate new fractures or propagate existing fractures in the injection zone, initiate fractures in the confining zone or cause the migration of injection or formation fluids into an underground source of drinking water; and002.02B Injection between the outermost casing protecting underground sources of drinking water and the well bore is prohibited.002.03 Operating requirements for Class V injection wells authorized by permit shall, at a minimum, specify that:002.03A Injection pressure at the wellhead shall not exceed a maximum which shall be calculated so as to assure that the pressure in the injection zone during injection does not initiate new fractures or propagate existing fractures in the injection zone, initiate fractures in the confining zone or cause the migration of injection or formation fluids into another underground source of drinking water; and002.03B Injection between the outermost casing protecting an underground source of drinking water and the well bore is prohibited.002.03C Injection fluid concentrations may not exceed Nebraska Title 118 - Ground Water Quality Standards and Use Classification, except as outlined in Chapter 3 of this Title.122 Neb. Admin. Code, ch. 19, § 002