; and (2) during any five-year period exceed $150,000. (b) Waiver authority In the case of contracts under this chapter for projects of special environmental significance, as determined by the Secretary, the Secretary may waive the limitation otherwise applicable under subsection (a)(1). (c) Prevention of duplication The Secretary shall not approve a contract or provide payments to any individual for a practice that has already been paid for as part of a previously approved and completed contract for any particular parcel of land. . C Reforming the Conservation Stewardship Program 221. Definitions Section 1238D of the Food Security Act of 1985 ( 16 U.S.C. 3838d ) is amended— (1) in paragraph (2)(B)— (A) by redesignating clause (ii) as clause (iii); (B) by striking clause (i) and inserting the following: (i) vegetative measures, and land management measures, including integrated pest, nutrient, crop residue, crop rotation, and managed rotational grazing management measures, as determined by the Secretary; (ii) structural measures that are integrated with and essential to the successful implementation of such vegetative and land management measures; and ; and (C) in clause (iii), as so redesignated by subparagraph (A), by inserting designated before priority ; (2) in paragraph (3)— (A) in subparagraph (A), by inserting designated before priority ; and (B) in subparagraph (D), by striking new and existing conservation activities and inserting conservation activities needed to comprehensively address the designated priority resource concerns ; (3) by amending paragraph (5) to read as follows: (5) Priority resource concern The term priority resource concern means the cause of a specific impairment that— (A) threatens— (i) public health or quality of life through degradation of air or water quality; or (ii) natural resources, including soil, fish, and wildlife; and (B) is identified at the national, State, or local level as a priority for a particular area of a State.