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In Bulgaria, a promising method for creating underground gas storage is the use of aquifers. The main prerequisites are: the presence of reservoir systems with a favorable combination of permeable and shielding rocks; hydrogeological and thermobaric conditions marking the chemistry and dynamics of water, the phase state and the quantities of stored gas; the structural-tectonic conditions defining the type of the perspective traps and their architecture; Neo-Seismotectonic activity, determining the degree of seismi...

The work presents and validates the methodology for assessing surface hydrocarbon dissipation which is observed in the vicinity of natural sites and technological facilities. The results of the application of this methodology can be employed in the assessment of the potential environmental risks, the degree of environmental pollution, the influence areas of pollution, etc. and in taking adequate actions to prevent possible emergency situations.