Pub. L. 111-312, tit. VII, subtit. A, sec. 706
SUSPENSION OF LIMITATION ON PERCENTAGE DEPLETION FOR OIL AND GAS FROM MARGINAL WELLS.
SEC. 706. SUSPENSION OF LIMITATION ON PERCENTAGE DEPLETION FOR OIL AND GAS FROM MARGINAL WELLS.(a) In General.—Clause (ii) of section 613A(c)(6)(H) is amended by striking “January 1, 2010” and inserting “January 1, 2012”.124 STAT. 3312(b) Effective Date.—The amendment made by this section shall apply to taxable years beginning after December 31, 2009.