7 C.F.R. § 361.10
Unless a user fee is payable under § 354.3 of this chapter, the services of an APHIS inspector during regularly assigned hours of duty and at the usual places of duty will be furnished without cost. The U.S. Department of Agriculture's provisions relating to overtime charges for an APHIS inspector's services are set forth in part 354 of this chapter. The U.S. Department of Agriculture will not be responsible for any costs or charges incident to inspections or compliance with this part, other than for the services of the APHIS inspector during regularly assigned hours of duty and at the usual places of duty. All expenses incurred by the U.S. Department of Agriculture (including travel, per diem or subsistence, and salaries of officers or employees of the Department) in connection with the monitoring of cleaning, labeling, other reconditioning, or destruction of seed, screenings, or refuse under this part shall be reimbursed by the owner or consignee of the seed or screenings.
7 C.F.R. § 361.10