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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 331UNDERGROUND INJECTION CONTROL
SUBCHAPTER KADDITIONAL REQUIREMENTS FOR CLASS V INJECTION WELLS ASSOCIATED WITH AQUIFER STORAGE AND RECOVERY PROJECTS
RULE §331.184Operating Requirements

(a) All Class V aquifer storage and recovery (ASR) injection wells shall be operated in such a manner that injection will not endanger drinking water sources. Underground injection endangers drinking water sources if such injection may result in the presence in underground water which supplies or can reasonably be expected to supply any public water system of any contaminant, and if the presence of such contaminant may result in such system's not complying with any national primary drinking water regulation or may otherwise adversely affect the health of persons.

(b) Injection pressure at the wellhead shall not exceed a maximum which shall be calculated so as to assure the pressure in the injection zone does not cause movement of fluid out of the injection zone.

(c) The owner or operator of an ASR injection well that has ceased operations for more than two years shall notify the executive director 30 days prior to resuming operation of the well.

(d) The owner or operator shall maintain the mechanical integrity of all wells operated under this section.

(e) The quality of the water injected at an ASR project must meet the requirements in §331.186(a)(1) of this title (relating to Additional Requirements). Water recovered from an ASR project that is provided to a public water system is subject to all applicable requirements, maximum contaminant levels, and treatment techniques under Chapter 290 of this title (relating to Public Drinking Water).

(f) All ASR injection and ASR production wells must be installed with a flow meter for measuring the volume of water injected and the volume of the water recovered.

(g) This subsection only applies to an ASR project that is located within the jurisdiction of a groundwater conservation district or other special-purpose district with the authority to regulate the withdrawal of groundwater.

  (1) An authorization or permit issued under this chapter may not authorize a volume of water to be recovered that exceeds the volume of water that is injected or the volume of injected water that the commission determines can be recovered, whichever is less; and

  (2) The requirements of Texas Water Code, Chapter 36, Subchapter N apply to the volume of water recovered from an ASR project that exceeds the volume of water the commission determines can be recovered, and otherwise as applicable.


Source Note: The provisions of this §331.184 adopted to be effective June 28, 1996, 21 TexReg 5443; amended to be effective May 19, 2016, 41 TexReg 3513

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