ONGC Petro-additions (OPAL), a joint venture company promoted by Oil and Natural Gas Corporation (ONGC) with 26% equity, and Gujarat State Petroleum Corporation, is implementing a mega petrochemicals project in the special economic zone (SEZ) at Dahej, Gujarat. ONGC said that the single largest component of this project is a dual feed cracker to produce 1,100 kilo-tonnes per annum of ethylene and 340 kilo-tonnes per annum of propylene. According to ONGC, the award of the contract, in the present challenging business environment, is proof of its determination to steer this project of national importance to successful commissioning by December 2012. The in-house feed stock for the project would be Naphtha streams from ONGC's Hazira and Uran land processing plants and C2-C3 from Dahej plant.