A product of a partnership between Philadelphia's Water Department and the Institute for Innovations in Local Farming, Somerton Tanks Farm is non-profit situated in northeast Philadelphia that uses a technique called S.P.I.N. (Small Plot INtensive) farming to turn its half-acre demonstration urban farm into a profitable, self-sufficient social enterprise. Founded in 2003, by 2006, the project had grown to have gross revenues of $68,000, with expenses coming in at $20,000. Two full time farmers, an assistant in training, and several volunteers operate the farm. The farm also runs a CSA program, maintains stands at three farmers' markets and supplies produce to a restaurant and catering hall.