• Period: 09/2019 - 01/2020
• Field of activity: Environment; orientating investigation of two contaminated sites in Tündern recorded in the register of contaminated sites of the state of Lower Saxony.
• Scope of services:

Sampling, analysis and evaluation of topsoil mixture sample areas in accordance with BBodSchV; carrying out small pile-drilling, sampling, preparation of mixed samples and evaluation in accordance with LAGA TR Boden; sampling, analysis and evaluation of soil air soundings in accordance with LAWA and LABO; sampling, analysis and evaluation of groundwater in accordance with LAWA; risk assessment for the soil - human and soil - groundwater impact pathways; waste law evaluation; documentation of the results.

• Brief description:
  • Orientating investigation of two sites listed in the state's register of contaminated sites

Lower Saxony in Tündern. The first old landfill site consists of backfilled lowlands or former ponds that were created from a former oxbow lake of the Weser. The lowlands were backfilled with household and bulky waste, excavated soil, building rubble and commercial waste. The second old landfill comprises a former sand and gravel pit, which was backfilled with household and bulky waste, commercial waste, garden and park waste, agricultural and forestry waste, building rubble, excavated soil and road rubble. Both old landfills are located in residential areas.

The objectives of the exploratory investigation are to determine the extent of the two landfills as well as the thickness and composition of the landfill and the landfill cover. With regard to the use of the two old landfills as a residential area, a risk assessment for the landfill cover is to be carried out for human health via the soil-human impact pathway. The landfill is to be assessed in terms of waste legislation. In addition, the potential impacts of the landfill and the hazards for the protected goods soil, soil air and groundwater are to be assessed.