7 C.F.R. § 636.19
As a condition of program participation, any authorized NRCS representative will have the right to enter an agricultural operation or tract for the purposes of determining eligibility and for ascertaining the accuracy of any representations related to cost-share agreements and performance. Access will include the right to provide technical assistance; determine eligibility; inspect any work undertaken under the cost-share agreements, including the WHIP plan of operations and O&M agreement; and collect information necessary to evaluate the habitat development performance specified in the cost-share agreements. The NRCS representative will make a reasonable effort to contact the participant prior to the exercising of this provision.
7 C.F.R. § 636.19