(a) Garbage, trash, rubbish, litter, or any other waste material or waste liquid generated on the WCA shall be removed from the area or deposited in receptacles provided for that purpose. The improper disposal of such wastes within the boundaries of the WCA is prohibited.

(b) The use of refuse containers for the disposal of refuse not generated on the WCA is prohibited.

(c) It is a violation to bring any material onto the WCA for the purpose of disposal.

(d) The discharge or placing of sewage, galley waste, garbage, refuse or pollutants into the WCA waters from any vessel or watercraft is prohibited.

(a) Special events including, but not limited to, water carnivals, boat regattas, music festivals, dramatic presentations, or other special recreation programs are prohibited unless written permission has been granted by the District Engineer.

(b) The public shall not be charged any fee by the sponsor of such permitted event unless the District Engineer has approved in writing the proposed schedule of fees. The District Engineer shall have authority to revoke permission and require removal of any equipment upon failure of the sponsor to comply with terms and conditions of the permit/permission. Any violation shall constitute a separate violation for each calendar day in which it occurs.

(a) The use of a vehicle off roadways is prohibited except as may be authorized by the District Engineer.

(b) Vehicles shall not be parked in violation of any posted restriction, or in such a manner as to endanger any Federal property to include natural features. The owner of any vehicle parked in violation of this section shall be presumed to have parked it, and unless rebutted such presumption will be sufficient to sustain a conviction as provided for in § 331.25.

(c) Vehicles shall be operated in accordance with all posted regulations.

(d) Driving or operating any vehicle in a careless, negligent, or reckless manner, heedlessly or in willful disregard for the safety of other persons, or in such manner as to endanger any property or environmental feature, or without due care or at a speed greater than is reasonable and prudent under prevailing conditions with regard to traffic, weather, road, light and surface conditions, is prohibited.

(e) This section pertains to all vehicles, including, but not limited to, automobiles, trucks, motorcycles, minibikes, trail bikes, snowmobiles, dune buggies, all terrain vehicles, bicycles, trailers, campers, or any other such equipment.

(f) Except as authorized by the District Engineer, no person shall operate any motorized vehicle without a proper and effective exhaust muffler, or with an exhaust muffler cutout open, or in any other manner which renders the exhaust muffler ineffective in muffling the sound of engine exhaust.

(a) The operation of aircraft on WCA lands and waters is prohibited, unless authorized in writing by the District Engineer.

(b) Except in extreme emergencies threatening human life or serious property loss, the air delivery of any person or thing by parachute, helicopter, or other means onto project lands or waters without written permission of the District Engineer is prohibited.

(c) The provisions of this section shall not be applicable to aircraft engaged on official business of the Federal Government or used in emergency rescue in accordance with the directions of the District Engineer.

§ 331.15 Fires.

Open fires are prohibited unless confined to fireplaces, grills, or other facilities designed for this purpose as designated by the District Engineer. Fires shall not be left unattended and must be completely extinguished prior to departure.

§ 331.16 Interference with government employees.

Interference with any Government employee in the conduct of his or her official duties pertaining to the administration of these regulations is prohibited. It is a violation to fail to comply with a lawful order directed by any Government employee or to knowingly give any false, fictitious, or fraudulent report or other information to any government employee in the performance of his or her official duties pertaining to the administration of these regulations.

§ 331.19 Commercial activities.

Unless otherwise authorized in writing by the District Engineer, the engaging in or solicitation of business or money is prohibited.

§ 331.20 Advertisement.

Unless otherwise authorized in writing by the District Engineer, advertising by the use of billboards, signs, markers, audio devices, or any other means whatsoever including handbills, circulars, and posters is prohibited. Vessels or vehicles with semipermanent or permanently installed signs are exempt if being used for authorized recreational activities or special events and in compliance with all other rules and regulations pertaining to vessels and vehicles.

§ 331.21 Unauthorized structures.

The construction, placing, or continued existence of any structure of any kind under, upon, in, or over WCA lands or waters is prohibited unless a permit, lease, license, or other appropriate written agreement therefor has been issued by the District Engineer. Structures not so authorized are subject to summary removal or impoundment by the District Engineer. The design, construction, placing, existence, or use of structures in violation of the terms of the permit, lease, license, or other written agreement therefor is prohibited.

§ 331.22 Abandonment of personal property.

(a) Personal property of any kind left unattended upon WCA lands or waters for a period of 24 hours shall be considered abandoned and may be impounded and stored at a storage point designated by the District Engineer who may assess a reasonable impoundment fee. Such fee shall be paid before the impounded property is returned to its owner.

(b) If abandoned property is not claimed by its owner within 3 months after the date it is received at the storage point designated by the District Engineer, it may be disposed of by public or private sale or by other means determined by the District Engineer. Any net proceeds from the sale of property shall be conveyed unto the Treasury of the United States as miscellaneous receipts.

§ 331.23 Control of animals.

(a) No person shall bring or allow horses, cattle, or other livestock in the WCA.

(b) No person shall bring dogs, cats, or other pets into the WCA unless penned, caged, or on a leash under 6