The city of Ourinhos is located in southwestern São Paulo state, 365 kilometers from the state capital, bordering the state of Paraná. Ourinhos municipal district has a population of 108,000 and occupies an area of 296.8 km2. The city owes its name to Antonio José da Costa Junior, a farmer and politician, who donated the land of Fazenda Ourinhos (Ourinhos Farm) for the erection of the city. Ourinhos has a subtropical climate, with an annual average temperature of 21 °C, and is served by three rivers: Paranapanema, Pardo and Turvo. The rail and road networks in the area favor producers as well as suppliers, which have made the city to be known as the “Mercosul Gateway”.