Except for a licensed harvester delivering the harvester's catch to a certified dealer on the day of harvest, a person may not offer shellfish for sale in-State or interstate unless the person is licensed and certified in accordance with this chapter. In order to operate a shellfish plant, a person shall obtain a food processing plant license pursuant to the provisions of: Health-General Article, §21-305, Annotated Code of Maryland; COMAR 10.15.04; and This chapter. The person-in-charge shall ensure that: Shellfish are not purchased, sold, or processed without the: License required by the Health-General Article, §21-305, Annotated Code of Maryland; and Certification required by this chapter; and The required food processing plant license and certification are conspicuously posted in the plant. In order to purchase or ship shellfish products in in-State or interstate commerce, a person shall obtain certification pursuant to this chapter. The Department shall specify on the license and certification issued to a person operating a shellfish plant that the person is approved to operate as a: Shucker-packer (SP); Repacker (RP); Shellstock shipper (SS); Reshipper (RS); or Depuration processor (DP). The person-in-charge shall ensure that the operations in the plant are limited to the type of shellfish operation specified on the license and certification pursuant to §E of this regulation.