The number of animals that may be kept on a property is based on animal units at the rate of one animal unit (1,000 pounds of animal) per 1.5 acres of available land. "Available land" is defined as all land on a lot, excluding the residence, lawn, driveway, garage, other buildings or structures not used for animal husbandry, septic system leach fields or equivalent waste disposal facilities, and all areas within 50 feet of wells, watercourses and wetlands. Animal unit equivalents are published by the Cornell Cooperative Extension. Copies of the most recent publication are available from the Zoning Administrator.