PERSONAL DATA: Born 18 August, 1958 in Volynsky District, Lipetsk Region (Russia). Married to Elvira Victorovna Trescheva. They have two sons, Dmitry and Alexy. His father is Yevgeny Georgievich Treschev, and his mother is Nina Davydovna Trescheva. His hobbies include soccer, volleyball, ice hockey, hiking, tennis, music, photography, and video.

EDUCATION: 1982 Graduated of the Moscow Energy Institute.

EXPERIENCE: From 1982 to 1984, Treschev served as a group leader in an Air Force regiment. He worked as a foreman and as an engineer at the RSC ENERGIA from 1984 to 1986. His responsibilities included the analysis and planning of cosmonaut activities aboard the Orbital Station and their inflight technical training. He also developed technical documentation and, together with the Yuri Gagarin Cosmonaut Training Center, coordinated all facets of cosmonaut training. His duties also included crew support and training for descent and emergency escape scenarios aboard the MIR Orbital Station. He also participated as a test operator during tests of the ground-based complex (transport vehicle/MIR core module/KVANT-2 module docked configuration) to optimize the Life Support System.

In 1992, he enrolled in the RSC ENERGIA cosmonaut detachment, and from 1992 to 1994 he completed the basic Cosmonaut training course. Treschev spent the next 3 years (1994 to 1996) in advanced Test Cosmonaut training.

From June 1997 to February 1998, Treschev trained as a flight engineer for the Mir station backup Exp-25 crew.

From June 1999 to July 2000 he trained as a flight engineer for the Soyuz-TM backup ISS contingency crew.

Initially, he trained as backup to the ISS Expedition-3 crew.

Since June 7, 2002, Treschev has served as International Space Station (ISS) Increment 5 flight engineer The Expedition-Five crew (two Russian cosmonauts and one American astronaut) will stay on the station for approximately 5 months.