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                    <gco:CharacterString>Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services</gco:CharacterString>
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                        <gco:Date>2010-12-08</gco:Date>
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            <gco:CharacterString>The dataset was generated according to accepted protocols as detailed in the supporting documentation. Pumps for the Andersen samplers were tested before each sampling day using inline flow meters. The Osiris particulate counter is serviced and recalibrated yearly as advised by the manufacturer. All equipment and filters for endotoxin analysis were depyrogenated before use. Controls included analysing unexposed filters and filters that were placed on the Andersen without the pumps running to check for contamination.</gco:CharacterString>
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