A US-based geologist has dismissed Maharashtra government's claim over the safety of the proposed nuclear plant site at Jaitapur, stating that the site is vulnerable to quakes. "Since Jaitapur lies in the same compressional stress regime that has been responsible for generating two major earthquakes at Latur and Koyna in the past five decades it can be argued that a similarly intense quake could possibly occur directly beneath the power plant," Prof Dr Roger Bilham of the University of Colarado said here.