Ground investigation programme for natural gas production sites 2015-2017
Description
From July 2015 to May 2017, the LBEG carried out a systematic campaign to investigate soil loads 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 examined for possible contamination by heavy metals, various hydrocarbons, dioxins and furans. In addition, specific radioactivity was measured at selected sites.
The programme took into account all districts in which natural gas production sites are located. In addition to the district of 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 places were selected in such a way that an approximately equal proportion of the total available funding places was 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, inter alia, that further sediment investigations be carried out at all natural gas production sites that drain into surface waters (in particular those sites that were not investigated in the above-mentioned project (AG Hg I). The sediment investigations are necessary because in the course of the investigations carried out (AG Hg I), exceedances of the threshold values (OW) in sediments of drainage-relevant surface waters were found to be remarkably frequent.
In the course of the further sediment investigations, further orientation studies were carried out in the summer of 2018 in the vicinity of a total of 42 natural gas production sites. Sampling was carried out at the discharge points as well as in the inflow and outflow of the discharge points or the natural gas production stations, both in dry trenches and in surface waters. The results were presented in November 2018 and summarised in the final report on the further sediment investigations (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=922&Service=WMS&Request=GetCapabilities& |