56 Ecology Emissions In terms of emissions, CO2 stands in the foreground at both sites under review. Our CO2 emissions were recompiled for this report and categorised into Scopes 1 to 3. At both sites, fossil fuels for mobility (in addition to heating energy at Endingen) are the main emitters of CO2. We had set ourselves the objective of expanding the charging infrastructure for vehicles weighing up to 3.5 tonnes in the current reporting period. However, a needs assessment for staff and fleet planning at both sites indicated that the existing infrastructure would be sufficient to meet demand until the end of 2023. We are however again considering a respective expansion for 2024. All of our CO2 emissions falling under Scopes 1 and 2, as well as quantified emissions under Scope 3, are fully offset with certificates from the Fair Recycling Foundation. Bützberg site For the present report, we have recalculated the emission factors for CO2, but also for SOx and NOx, using current figures provided by the FOEN (Federal Office for the Environment). The SOx and NOx emissions however are so low, at 0.006 and 0.3 tonnes respectively, that we will remain mindful of these, but will not discuss these further in this report. Under Scope 1, fuel is by far the largest item, accounting for 87% of the total. We note that emissions have returned to their previous customary levels, following the reduced mobility caused by the pandemic. Furthermore, the CO2 emissions from the oil heating system, at 6%, belong to direct emissions under Scope 1. For this classification, we have succeeded in keeping the proportion of oil used to cover our heating energy requirements at a low level. Our wood heating worked reliably and there were few very cold days that could not be covered by our wood heating alone. Under Scope 2, we report on our electricity usage. Here, we almost exclusively used electricity with a Swiss hydropower certificate of origin. The adjusted conversion factor, according to the FOEN, and the simultaneous savings that we were able to achieve in 2022 more than halved the CO2 emissions under Scope 2 compared to previous years. Water consumption at the Endingen site is mainly a consequence of usage in the sanitary facilities and social areas. The consumption figures remained respective stable and lie within the normal fluctuation range. In Bützberg, general water consumption accounts for 43% over the reporting period and has been stable over four years at approx. 1,200 m3/year. Process water for wood drying is the next largest consumer at 34%, followed by the irrigation of green areas at 23%. Water consumption for both process water and irrigation varies widely. In the case of irrigation, this is dependent on the weather, whereas process water consumption depends on the usage of the wood drying system. In 2022, we completed an upgrade to the water treatment process that will enable us to make 30-50% savings in process water consumption. The 2023 figures will show definitively whether this remains achievable in the long term. The reduced consumption in 2022 is promising, but since the savings only occurred over a few months and system usage additionally influences consumption, only the figures for the full 2023 year will provide a reliable assessment. Roland Ammann Water
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