An individual may not catch hard-shell clams for commercial purposes on Sunday. An individual may not possess more than 10 percent of hard-shell clams per container with a transverse dimension of less than 1 inch. Times for Harvesting, Landing, and Delivering. From May 1 through September 30, an individual harvesting hard-shell clams for commercial purposes: Shall land hard-shell clams not later than 3 p.m. on the same day of harvest; and Shall deliver hard-shell clams: To a person who is licensed and certified to sell shellfish by the Maryland Department of Health in accordance with COMAR 10.15.04 and 10.15.07; and Not later than 4 p.m. on the same day of harvest. From October 1 through April 30, an individual harvesting hard-shell clams for commercial purposes: Shall land hard-shell clams not later than 1 hour after sunset on the same day of harvest; and Shall deliver hard-shell clams: To a person who is licensed and certified to sell shellfish by the Maryland Department of Health in accordance with COMAR 10.15.04 and 10.15.07; and Not later than 9 p.m. on the same day of harvest. An individual shall notify the Natural Resources Police when there is an emergency which would prevent compliance with the times specified in this section. In addition to the requirements of this chapter, a commercial licensee who harvests hard-shell clams shall harvest hard-shell clams in accordance with the National Shellfish Sanitation Program Model Ordinance that is incorporated by reference by the Maryland Department of Health in COMAR 10.15.07.01A.