General Restrictions. An individual may not operate a hydraulic clam dredge unless they possess a valid tidal fish license to catch clams. The owner of a hydraulic clam dredge may not permit the operation of the dredge by more than one individual on any one day, including the owner. Measurement of Rig. A hydraulic clam dredging rig may not have more than one conveyor or elevator, blade, and water manifold. The water manifold may not be more than 36 inches in width measuring from the outside jets. The outside jets on the water manifold shall be set parallel to, or inclined inward toward, the median vertical longitudinal plane of the dredge. Muffler Required. A hydraulic clam dredge vessel shall have mufflers properly installed on all motors and engines in accordance with COMAR 08.18.03.08. An individual may not harvest clams by hydraulic dredge in the Chesapeake Bay offshore of Sandy Point State Park in Anne Arundel County within: 800 feet of the shoreline January 1 through March 31; 1,500 feet of the shoreline April 1 through September 30; and 800 feet of the shoreline October 1 through December 31. Private Bathing Beach. From May 1 through September 30, an individual may not catch or attempt to catch clams by hydraulic dredge within 300 feet of a private bathing beach. The private bathing beach shall be marked with a sign which shall: Be posted and maintained by the owner of the private bathing beach; Be a minimum of 2 feet high by 3 feet wide with legible black letters measuring a minimum of 4 inches high and 2 inches wide; State “Private Bathing Beach — No Clam Dredging Within 300 Feet”; Be made of durable material; and Conform to local ordinances and codes.