1. (a) Except as provided in §331.9 of this title (relating to Injection Authorized by Rule) and by subsection (d) of this section, all injection wells and activities must be authorized by permit.
2. (b) For Class III in situ uranium solution mining wells, Frasch sulfur wells, and other Class III operations under commission jurisdiction, an area permit authorizing more than one well may be issued for a defined permit area in which wells of similar design and operation are proposed. The wells must be operated by a single owner or operator. Before commencing operation of those wells, the permittee may be required to obtain a production area authorization for separate production or mining areas within the permit area.
3. (c) The owner or operator of a large capacity septic system or a septic system which accepts industrial waste must obtain a wastewater discharge permit in accordance with Texas Water Code, Chapter 26 and Chapter 305 of this title (relating to Consolidated Permits), and must submit the inventory information required under §331.10 of this title (relating to Inventory of Wells Authorized by Rule).
4. (d) Pre-injection units for Class I nonhazardous, noncommercial injection wells and Class V injection wells permitted for the disposal of nonhazardous waste must be either authorized by a permit issued by the commission or registered in accordance with §331.17 of this title (relating to Pre-Injection Units Registration). The option of registration provided by this subsection shall not apply to pre-injection units for Class I injection wells used for the disposal of byproduct material, as that term is defined in Chapter 336 of this title (relating to Radioactive Substance Rules).

Source Note:The provisions of this §331.7 adopted to be effective May 13, 1986, 11 TexReg 1980; amended to be effective April 28, 1997, 22 TexReg 3526; amended to be effective July 12, 2001, 26 TexReg 5019; amended to be effective January 9, 2003, 28 TexReg 340.