Precast Systems first production facility consisted of 1 septic tank form, one dry well form, one feed bunk form, a 1961 ford boom truck painted highway orange and a telephone box attached to a telephone pole Precast Systems makes 1000 gal septic tank, 1000 gal low profile septic tank, &hellip The Precast Systems has grown from manufacturing feed bunks & septic tanks to a variety of specialty products Working at Precast Systems in 1994 Jenny became our office manager when Elaine Riehle retired in 2002