ANOMALOUS DEEP WATERS GURGLING TO THE SURFACE AND IMPACTING SOILS IN THE VAL D'AGRI OIL FIELD, SOUTHERN ITALYJournal: International journal of ecosystems and ecology science (IJEES) (Vol.4, No. 4)
Publication Date: 2014-11-10
Authors : Albina Colella;
Page : 533-542
Keywords : anomalous; deep waters gurglıng; surface; ımpactıng soıls; Val d'agrı Southern Italy;
This preliminary study documents the first occurrence in Southern Apennines of anomalous deep ground-water gurgling to the surface and impacting soils, that become infertile. 2 murky water pools (LaRossa wa-ters) have appeared in 2011 in a bucolic farm area near Montemurro, north of the Pertusillo Lake, in the Val d’Agri oil field (Basilicata, Italy), 2,3 km from the Costa Molina 2 reinjection well. To determine their properties 13 water samples were analysed, including LaRossa waters and, for comparison, 5 spring waters of the Val d’Agri. Physico-chemical parameters of LaRossa waters resulted different, showing higher con-centrations of salts, sodium, hydrocarbons, phenols and metals. The most abundant chemicals were: so-dium, chlorides, bicarbonates, total hydrocarbons, phenols, aluminum, iron, barium, boron, strontium, lead, manganese, cupper, zinc. LaRossa waters are turbid, rich of colloids and contain some gas; they are anoxic, with high temperature and intermittent flow rates at daily intervals, and cause soil degradation along their flow path. Physico-chemical characteristics of LaRossa waters are most similar to oil produced waters. A preliminary hypothesis indicates that a likely source of LaRossa waters is represented by leakage of the oil produced waters reinjected in the Costa Molina 2 well, probably due to problems of well integrity, with contamination of aquifers and toxic waters gurgling to the surface. A multidisciplinary study is needed in order to confirm this hypotesis.
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