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Use constraints
Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports. For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Original cartography by Philippe Rekacewicz (le Monde Diplomatique) assisted by Laura Margueritte and Cecile Marin, later updated by Riccardo Pravettoni (GRID-Arendal), Novikov, Viktor (Zoi Environment Network))
Source(s)
Interpretation of Caspian Sea Sediment Data, Caspian Environment Programme, 2002; Transboundary Diagnostic Analysis Revisit, 2007
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Uploaded on Thursday 01 Mar 2012
by GRID-Arendal
Pesticides and heavy metals in sediments
Year:
2012
Author:
Original cartography by Philippe Rekacewicz (le Monde Diplomatique) assisted by Laura Margueritte and Cecile Marin, later updated by Riccardo Pravettoni (GRID-Arendal), Novikov, Viktor (Zoi Environment Network)
Description:
Often, once the oil extraction activity stops, waste
remains and constitutes a hazard. In Kazakhstan there are
19 oilfields with 1485 oil wells in the coastal zone of the
Caspian Sea, including 148 in the flooded zone. Drilling
technology in the 1960s to 1980s did not account for the
corrosive nature of seawater and its effects on metal casing
and lay head. Over time, wells have become considerable
sources of marine pollution. Some 600 000 hectares of
land in the Atyrau and Mangystau Oblasts of Kazakhstan
are polluted with a thick layer of oil penetrating the soil
to a depth 8 to 10 metres and polluting the ground water.
About 30 000 hectares of soil on Azerbaijan’s Absheron
peninsula is polluted by oil products and various forms of
industrial waste.
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