(a) Sponsor(s)' responsibility for O&M of a completed project measure begins when a part of all of the contract installing such measure is completed and accepted from the contractor. If the installation of the project measure is performed by force account, division of work, or performance of work methods, the sponsor(s)' O&M responsibilities begin on the date the work or portion thereof is completed as determined by NRCS, except for completed work located on Federal lands which are subject to special-use permits. The O&M agreement shall specify that O&M will continue through: (1) The evaluated life of the project, or (2) the evaluated life of measures that are economically evaluated as a unit, or (3) the useful life of cost-shared measures that are for land conservation or land utilization. The sponsor(s)' duties and liabilities for the measures under other Federal and State laws are not affected by the expiration of the O&M agreement.

(b) For project measures being installed in segments, the sponsor(s) shall be responsible for O&M of completed and accepted segments. However, the NRCS may share in the cost of repairing damages to a completed segment when the damage is attributed to the continuation of work on uncompleted segments of the measure or when due to the fact that the measure was only partially completed.