; (2) in subsection (a)(4)— (A) by striking six-year and inserting four-year ; and (B) by striking shall the first time such term appears and inserting may ; and (3) in subsection (b)(1) by striking and after the semicolon at the end of subparagraph (C), by striking the period at the end of subparagraph (D) and inserting ; and , and by adding at the end the following: (E) is made within the adjustment period for that obligation. . 114. Obligation period Section 115(c) of the Federal Oil and Gas Royalty Management Act of 1982 ( 30 U.S.C. 1724(c) ) is amended by adding at the end the following new paragraph: (3) Adjustments In the case of an adjustment under section 111A(a) in which a recoupment by the lessee results in an underpayment of an obligation, for purposes of this Act the obligation becomes due on the date the lessee or its designee makes the adjustment. . 115. Tolling agreements and subpoenas (a) Tolling agreements Section 115(d)(1) of the Federal Oil and Gas Royalty Management Act of 1982 ( 30 U.S.C. 1724(d)(1) ) is amended by striking (with notice to the lessee who designated the designee) . (b) Subpoenas Section 115(d)(2)(A) of the Federal Oil and Gas Royalty Management Act of 1982 ( 30 U.S.C. 1724(d)(2)(A) ) is amended by striking (with notice to the lessee who designated the designee, which notice shall not constitute a subpoena to the lessee) . 116. Appeals Section 115(h) of the Federal Oil and Gas Royalty Management Act of 1982 ( 30 U.S.C. 1724(h) ) is amended— (1) in paragraph (1), in the heading, by striking 33-month and inserting 48-month ; (2) by striking 33 months each place it appears and inserting 48 months