Code of Federal Regulations Title 19. Customs Duties § 19.152.13 Commingling of merchandise

(a) Notice to importer. The Center director shall give written notice to the importer as promptly as possible after any commingling is discovered.

(b) Highest rate applicable. Commingled merchandise shall be assessed with duty at the highest rate or rates applicable to any one kind of merchandise included in the commingling, unless:

(c) Time limit. To obtain the benefit of General Note 3(f), HTSUS, the importer shall, within 30 days after the date of mailing or personal delivery of the notice provided for in paragraph (a) of this section, take appropriate action as follows:

(d) Extension of time limit. The 30–day limit for filing the evidence specified in General Note 3(f) or for performing the segregation specified in General Note 3(f), Harmonized Tariff Schedule of the United States, may be extended by the Center director for additional periods of 30 days each, but not beyond 6 months from the date of mailing or personal delivery of the notice provided for in paragraph (a) of this section, if the importer makes written application to the Center director for each extension and gives satisfactory reasons for its allowance.