7 CFR §301.55-7

1. (a)Any person (other than a person authorized to issue limited permits under § 301.555(c)) who desires a certificate or limited permit to move a regulated article interstate must request an inspector 1 to examine the articles as far in advance of the desired interstate movement as possible, but no less than 48 hours before the desired interstate movement.
2. (b)The regulated article must be assembled at the place and in the manner the inspector designates as necessary to comply with this subpart.