This document amends the Customs Regulations relating to the commercial testing and gauging of imported merchandise, pursuant to Customs modernization provisions of the North American Free Trade Agreement Implementation Act. The regulations revise the general procedures for the accreditation/reaccreditation of commercial laboratories, the approval/reapproval of commercial gaugers, and the suspension and revocation of such accreditations/approvals. Further, the regulations provide that Customs will charge such laboratories/ gaugers to accredit/approve and periodically reaccredit/reapprove their commercial services pursuant to a reimbursable fee schedule, and make provision for the imposition of monetary penalties for failure to adhere to any of the provisions applicable to the examination, sampling, and testing, or gauging of imported merchandise.