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CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER D—WATER PROGRAMS (Parts 100–149) > PART 146—UNDERGROUND INJECTION CONTROL PROGRAM: CRITERIA AND STANDARDS > SUBPART C—Criteria and Standards Applicable to Class II Wells (§146.21 to §146.24) > 146.21—Applicability.
146.21—Applicability.
This subpart establishes criteria and standards for underground injection control programs to regulate Class II wells.