Study programme Sediments in the environment of natural gas production sites 2018
Description
From July 2015 to May 2017, the LBEG carried out a systematic campaign to investigate soil pollution in the vicinity of natural gas production sites. A total of 200 of the 455 active natural gas production sites in Lower Saxony were sampled and investigated for possible loads of heavy metals, different hydrocarbons, dioxins and furans. In addition, specific radioactivity was measured at selected locations.
The program took into account all counties in which natural gas production sites are located. In addition to the district Rotenburg/Wümme, the locations were in the districts of Aurich, Celle, Cloppenburg, Diepholz, Emsland, County Bentheim, Heidekreis, Leer, Nienburg, Oldenburg, Vechta and Verden as well as in the city of Emden and the Hanover region.
The funding areas were selected in such a way that an approximately equal proportion of the total available funding places were examined in each district (approximately 40 %). All investigations were carried out in accordance with the legal requirements of the Federal Soil Protection Ordinance. The LBEG presented the results at a press conference on 15 May 2017. The final report is available for download.
On the basis of the results obtained, it was proposed, among other things, that further sediment studies should be carried out at all natural gas production sites that drained in surface waters (particularly the sites that were not examined within the framework of the above-mentioned project (AG Hg I). Sedimentary studies are necessary because the tests carried out (AG Hg I) are noticeably frequent overshoots of thresholds (OW) in sediments of drainage relevant surface waters.
In the course of the further sediment studies, further orientating investigations were carried out in the summer of 2018 in the vicinity of a total of 42 natural gas production sites. Sampling was carried out both in dry trenches and in surface waters at the entry and outflow of the discharge points or the natural gas production sites. The results were presented in November 2018 and summarised in the final report on further sediment studies (http://www.lbeg.niedersachsen.de/startseite/boden_grundwasser/schadstoffmessungen/untersuchungen_im_umfeld_von_erdgasfoerderplaetzen/untersuchungen-im-umfeld-von-erdgasfoerderplaetzen-135742.html).
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https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=1097&Service=WMS&Request=GetCapabilities& |