AURO-Environmental-declaration-2014-04.2019

15 Environmental aspects mine the total annual emission of odorous materials. On a long-term basis, the odour emissions can be reduced by optimising formulations and improving the process technol- ogy (closed systems). Further aspects to be considered are energy emissions in the form of discharged heat and acoustic noise. Except for those originating from the heating plant, they cannot be quanti- fied. However, the levels are very low, so no measurements have been made and none will be made. Noise is pro- duced at the seven exhaust air shafts because the fan motors are on the outside. However, the noise which they produce is perceptible only on windless days. The noise origination from the urban motorway close to the site is much greater. Thermal discharge is produced by the gas-powered 250 kW condensing gas boiler (exhaust gas temperature: 53 °C) of the heating plant, by the steam generator (exhaust gas temperature: 143 °C) and by the boiler used for the production of plant paint pigments. Moreover, heat is discharged with the room air through the exhaust air shafts. As from the year 2007, AURO is annually certified as CO 2 -free company by the Climate Neutral Group. Soil Catch pans within the production and storage areas prevent escape of liquid raw materials out of the buildings and into the soil in the case of leakage of the storage containers. The storage hall 7, erected in 1992 and provided with a transfer location equipped specially according to the WHG (water resources legislation), ensures that there is no danger to the soil or water resources when transferring raw materials and products. All drains in the production and storage areas are sealed, so that on these routes too it is impossible for raw materials and products to escape into the canalisation. Further facts on the subject of the soil are considered under “Production site - key figures”. Air Hydrocarbons of vegetable-origin are released directly into the environment when processing essential oils in large quantities. Measurements made in the seven exhaust air shafts have shown that about 1400 kg total hydrocarbons are emitted annually. This means that the emission lies considerably below the maximum mass current of 3 kg/h (measurement obligatory) permitted according to the legislation TA Luft 86. The seven exhaust air shafts discharge annually a total quantity of 21 million m 3 room air. The odour substance concentration fluctuates between 0 and 1820 GE/m 3 (GE = odour units) of exhaust air. It is not possible to deter- ...for future generations. ...and clean air... Intact soil...