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42 U.S.C. 300f et seq.; and 42 U.S.C. 6901 et seq.
49 FR 20197, May 11, 1984, unless otherwise noted.
53 FR 43109, Oct. 25, 1988, unless otherwise noted.
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Subscribe to: 40 CFR 147.3107
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Nomenclature changes to part 147 appear at 69 FR 18803, Apr. 9, 2004.
(a) Monitoring of annulus pressure conducted pursuant to § 146.8(b)(1) shall be preceded by an initial pressure test. A positive gauge pressure on the casing/tubing annulus (filled with liquid) shall be maintained continuously. The pressure shall be monitored monthly.
(b) Pressure tests conducted pursuant to § 146.8(b)(2) of this chapter shall be performed with a pressure on the casing/tubing annulus of at least 200 p.s.i. unless otherwise specified by the Director. In addition, pressure tests conducted during well operation shall maintain an injection/annulus pressure differential of at least 100 p.s.i. throughout the tubing length.
(c) Monitoring of enhanced recovery wells conducted pursuant to § 146.8(b)(3), must be preceded by an initial pressure test that was conducted no more than 90 days prior to the commencement of monitoring.