CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER D—WATER PROGRAMS (Parts 100–149) > PART 147—STATE, TRIBAL, AND EPA-ADMINISTERED UNDERGROUND INJECTION CONTROL PROGRAMS > SUBPART HHH—Lands of the Navajo, Ute Mountain Ute, and All Other New Mexico Tribes (§147.3000 to §147.3016) > 147.3009—Area of review.

147.3009—Area of review.

The area of review shall be defined as follows:
(a) Class II wells. The area of review for Class II permits and area permits shall be defined by a fixed radius as described in § 146.6(b) (1) and (2) of this chapter except that the radius shall be one-half mile.
(b) Class I and III wells. The area of review for Class I and III wells are well fields which may be either:
(1) An area defined by a radius two and one-half miles from the well or well field; or
(2) An area one-quarter mile from the well or well field where the well field production at the times exceeds injection to produce a net withdrawal; or
(3) A suitable distance, not less than one-quarter mile, proposed by the owner or operator and approved by the Director based upon a mathematical calculation such as that found in § 146.6(a)(2) of this chapter.