Investor Presentaiton

2016 Braskem | Annual Report DISTRIBUTION OF EFFLUENT DISPOSAL BY LOCATION G4-EN22 Countries Location Effluent Destination Volume of effluents discharged (m³/year) Treatment method Rio de Janeiro Canal de Coelho 587,244 Biological COD (kg/year) 69,939 Odebrecht Ambiental Bahia 6,157,184 Treatment Station Pre-treatment with water-oil separator and biological treatment at Odebrecht Ambiental 3,492,411 Alagoas Ocean disposal 3,375,706 Neutralization/Aerobic process (activated sludge) 320 Brazil Rio Grande do Sul External Effluent Treatment Station (ETE) 4,155,331 Pre-treatment with water-oil separator and primary, secondary (biological) and tertiary treatments 1,261,223 Ponte Funda Stream 85,153 Sent for external treatment 290,466 Perequê River São Paulo 271,386 Water-oil separator and primary treatment through decantation and filtration ΝΑ Conventional primary and physical, Tamanduateí River 1,949,353 333,868 physicochemical, and biological La Porte Houston navigation channel 443,044 Primary treatment and chlorination 2,658 Marcus Hook Delaware River via POTW 695,995 Primary, biological, and chlorination treatment 6,960 United States Neal Seadrift Oyster Creek Big Sandy River 241,157 Primary treatment and chlorination 1,471 Victoria Barge Canal 303,324 External treatment ΝΑ Oyster Creek 86,417 External treatment NA Germany Schkopau Wesseling Saale River 83,382 External treatment ΝΑ Rio Rhine 149,904 Primary and biological treatment 1,799 Mexico Mexico Huazuntlán River 1,271,951 Internal treatment with partial reuse and sending to the Huazuntlán River 87 Among the main impacts on effluent generation in 2016 are the quality of the abstracted water, the influence of the summer temperature in some regions, operational problems, and shutdowns for maintenance. On the other hand, positive actions were implemented, such as increasing the concentration cycle in cooling towers, optimizing operating procedures with consequent reuse of water currents and reduced losses.

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