In enforcing the provisions of this chapter consistent with the national organic program, the department may conduct an investigation to determine if a person is complying with the requirements of this chapter. To the extent consistent with the national organic program, all of the following shall apply:
 1. The department may receive a complaint from any person regarding a violation of this chapter. The department shall adopt procedures for persons filing complaints. The department shall establish procedures for processing complaints including requiring minimum information to determine the verifiability of a complaint.
 2. The department may conduct inspections at times and places and to an extent that the department determines necessary in order to conclude whether there is a violation of this chapter. The department may enter upon any public or private premises during regular business hours in a manner consistent with the laws of this state and the United States, including Article I, section 8, of the Constitution of the State of Iowa, or the fourth amendment to the Constitution of the United States for purposes of carrying out an inspection.
 3. The department may conduct examinations of agricultural products in order to determine if the agricultural products are in compliance with this chapter. Unless the national organic program otherwise requires, all of the following shall apply:

 a. The methods for examination shall be the official methods adopted by the association of official agricultural chemists in all cases where methods have been adopted by the association.
 b. A sworn statement by the state chemist or the state chemist’s deputy stating the results of an analysis of a sample taken from a lot of agricultural products shall constitute prima facie evidence of the correctness of the analysis of that lot in a contested case proceeding or court proceeding.