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Annual Report 2008 - AMG Advanced Metallurgical Group NV

Annual Report 2008 - AMG Advanced Metallurgical Group NV

(447,000 GJ,

(447,000 GJ, predominantly electricity) and direct energy usage (496,000 GJ, predominantly natural gas). 3 The split between non-renewable and renewable sources is complex, depending on the local utility company’s generation mix, with the notable exception of Brazil where almost all electricity (both that purchased from the utility and internally generated) comes from hydroelectric generation contributing 90,000 GJ. Overall it is estimated that in excess of 10% of the total energy used by the Division comes from clearly defined renewable sources. Water consumption GRI Indicator EN8 Water consumption across the Division was reported for all purposes, including both process and sanitary uses. In 2007, the Division (excluding the mine site in Brazil) utilized 323 million liters of water, decreasing marginally to 308 million liters in 2008. Several of AMG’s businesses, notably the antimony trioxide plants in France, the coatings plant in Freiburg and the aluminum powder plants in the UK, run essentially dry production processes utilizing water almost exclusively for drinking and sanitary uses. These facilities each use 5 to 10 million liters per year, equivalent to that used by just 10 to 20 average western households. Other facilities use water for non-contact cooling purposes and often utilize closed cycle cooling loops and cooling towers to cut down on utilization, resulting in average usage of less than 90 million liters per year. The largest water usage within the Advanced Materials Division is at the mine site in Brazil representing over 80% of the Division’s total water usage. Estimated consumption at the mine decreased from 4,977 to 4,612 million liters as a result of reduced operations to install new, more efficient equipment. 5 Climate Change GRI Indicators EN16 and EN17 All Advanced Materials Division units were required to report CO 2 equivalent greenhouse gas emissions for 2008. Both direct greenhouse gas emissions (from the combustion of fossil fuels) and indirect emissions (from the purchase of electricity, steam or compressed gases) were reported and were calculated using local regulations, GHG Protocol methodology or first principle. For the Advanced Materials Division, CO 2 equivalent greenhouse gas emissions decreased from 103,000 metric tons in 2007 to 94,000 metric tons in 2008. This reduction can be attributed to improved efficiencies and the use of better, updated emissions factors and was achieved despite the inclusion of the Freiburg facility and a small increase in overall production tonnage. AMG will continue to refine its processes for collecting and reporting greenhouse gas emissions in the coming years in line with its goal of reducing its overall carbon footprint. 64 Sustainable Development 3 Indirect energy consumption does not include the energy consumed by electricity producers to generate the electricity or transmission losses. 4 Excludes Brazil mine 5 There is no direct measurement of water use at the mine and the volume is estimated based on pump capacities and operation times.

Emissions to air GRI Indicators EN19 and EN20 AMG’s operations benefit from stringent air emissions control technology. Particulates from furnaces, perhaps the major source of potential emissions, are controlled by baghouses, which are a reliable and widely used technology for particulate emission control. Additionally, acid gases such as SOx are controlled by desulfurization techniques. The inorganic nature of AMG’s processes means that organic hazardous air pollutants (HAPs) and chlorinated and fluorinated organic species do not represent a significant issue for any member of the Division. A survey of ozone depleting substances (EN 19) revealed that negligible amounts of these materials are utilized on the Divisions’s facilities. Where ozone depleting substances could have been present, for example in chillers or air conditioners, refrigerant replacement with nonozone depleting substances such as R134A has often been carried out. AMG facilities evaluate emissions from all operations in accordance with all local legislation. Where there are significant emissions, the regulators typically require continuous emissions monitoring systems (CEMS), while for less intensive emissions periodic stack emissions testing occurs. For the lowest level sources, engineering calculations are often utilized to demonstrate that the emissions associated with them are insignificant. In calculating its emissions AMG has used actual CEMS data where available or the latest stack testing data (which may not have been collected in 2007). For non-regulated sources the emissions are assumed to be insignificant. 6 Based on water usage estimates The two major contributors to air emissions are SOx and particulate. In 2008, particulate emissions across the Advanced Materials Division totaled 40 metric tons, an increase from 20 metric tons in 2007, resulting from improved data and measurements. Total SOx emissions in 2008 were 121 metric tons, down from 143 metric tons in 2007. Available data indicates that the remaining air pollutant, NOx, is a minor contributor for the Division. Emissions to water GRI Indicator EN21 In 2007 and 2008 all Advanced Materials Division companies reported the volume of aqueous effluents discharged to local water courses. This does not include rainwater runoff from the sites but does include process water discharges and non-sanitary discharges to sewers. In addition, chemical analysis of the effluent was used to determine the total mass of contaminants discharged. In 2008 total waste water disposed to water courses by the Division, excluding the Brazil mine, totaled 190 million liters compared to 152 million liters in 2007. The increase is attributed to improved estimation of discharge volumes. The Brazil mine site, which is a highly water intensive process, discharged an estimated 4,612 million liters in 2008, down from 4,977 million liters in 2007. 6 This was attributed to a shutdown period in 2008 to install more energy and water efficient process equipment, the benefits of which will be realized in 2009. Four manufacturing sites, the aluminum powder facilities in the UK and the antimony trioxide plants in France, have no offsite water disposal outside of that used for sanitary purposes. The pyrometallurgical processes used extensively by the Advanced Materials Division facilities means that relatively little contamination enters the water — most water is used solely for non-contact cooling and filtration or treatment plants mean the water is often cleaner when it leaves the site than when it enters. There are, however, a small number of wet chemical processes generating waste streams. For the four production sites reporting industrial process water disposal, the major Sustainable Development 65

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