The Urau oil field Development Project during its production stage will discharge a significant amount of chemicals into the ocean, according to its Environmental Impact Assessment (EIA). The EIA was done by Acorn International stated that, “Based on the estimated discharge rates, cooling water, produced water, slop discharge overboard, and brines from the sulphate removal, ultrafiltration, and wash water processing system are the operational discharges that are significant enough to require assessment, and thus these were the focus of modelling to assess the nature and extent of potential marine water quality impacts.” It was noted that a 20 percent contingency factor was added to most of these discharge rates for the modelling to provide conservatism for the assessment.