This excerpt taken from the PBR 6-K filed Jan 23, 2007.
Refining Park Enhancement and Modernization
The projects to enhance and modernize Petrobras refineries will broaden the processed load by 100,000 barrels per day and raise the processed Brazilian oil volume by 250,000 barrels per day (from 80% to 90% processed load).
The R$22.6 billion in investments (by 2010), involving work in all Petrobras refineries, also hope to improve fuel quality, rendering it cleaner, and to have an important socio-environmental effect. Improved diesel fuel quality will prevent emissions calculated at upwards of 86,000 tons of SO2 per year, contributing to quality of life in the cities.