116 STAT. 228 PUBLIC LAW 107-171—MAY 13, 2002 "(I) address at least 1 significant resource of concern for the enrolled portion of the agricultural operation at a level that meets the appropriate nondegradation standard; and "(11) cover active management of conservation practices that are implemented or maintained under the conservation security contract. " (B) TIER II CONSERVATION SECURITY CONTRACTS.— A conservation security plan for land enrolled under a Tier II conservation security contract shall— "(i) be for a period of not less than 5 nor more than 10 years, as determined by the producer; "(ii) include conservation practices appropriate for the agricultural operation, that, at a minimum— "(I) address at least 1 significant resource of concern for the entire agricultural operation, as determined by the Secretary, at a level that meets the appropriate nondegradation standard; and "(II) cover active management of conservation practices that are implemented or maintained under the conservation security contract. " (C) TIER HI CONSERVATION SECURITY CONTRACTS. —A conservation security plan for land enrolled under a Tier III conservation security contract shall— "(i) be for a period of not less than 5 nor more than 10 years, as determined by the producer; and "(ii) include conservation practices appropriate for the agricultural operation that, at a minimum— "(I) apply a resource management system that meets the appropriate nondegradation standard for all resources of concern of the entire agricultural operation, as determined by the Secretary; and "(II) cover active management of conservation practices that are implemented or maintained under the conservation security contract. "(6) MINIMUM REQUIREMENTS.—The minimum requirements for each tier of conservation contracts implemented under paragraph (5) shall be determined and approved by the Secretary. " (e) CONSERVATION SECURITY CONTRACTS.— "(1) IN GENERAL.—On approval of a conservation security plan of a producer, the Secretary shall enter into a conservation security contract with the producer to enroll the land covered by the conservation security plan in the conservation security program. "(2) MODIFICATION.— "(A) OPTIONAL MODIFICATIONS.—^A producer may apply to the Secretary for a modification of the conservation security contract of the producer that is consistent with the purposes of the conservation security program. "(B) OTHER MODIFICATIONS.— "(i) IN GENERAL.—The Secretary may, in writing, require a producer to modify a conservation security contract before the expiration of the conservation security contract if the Secretary determines that a change made to the type, size, management, or other aspect of the agricultural operation of the producer would,
�
