Sub-soil contamination due to oil spills in zones surrounding oil pipeline-pump stations and oil pipeline right-of-ways in Southwest-Mexico |
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Authors: | Rosario Iturbe Carlos Flores Alejandrina Castro Luis G Torres |
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Institution: | (1) Grupo Saneamiento de Suelos y Acuiferos: Coordinacion de Ingenieria Ambiental. Instituto de Ingeniería, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-472, Coyoacan, 04510 Mexico City, D.F., Mexico |
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Abstract: | Oil spills due to oil pipelines is a very frequent problem in Mexico. Petroleos Mexicanos (PEMEX), very concerned with the
environmental agenda, has been developing inspection and correction plans for zones around oil pipelines pumping stations
and pipeline right-of-way. These stations are located at regular intervals of kilometres along the pipelines. In this study,
two sections of an oil pipeline and two pipeline pumping stations zones are characterized in terms of the presence of Total
Petroleum Hydrocarbons (TPHs) and Polycyclic Aromatic Hydrocarbons (PAHs). The study comprehends sampling of the areas, delimitation
of contamination in the vertical and horizontal extension, analysis of the sampled soils regarding TPHs content and, in some
cases, the 16 PAHs considered as priority by USEPA, calculation of areas and volumes contaminated (according to Mexican legislation,
specifically NOM-EM-138-ECOL-2002) and, finally, a proposal for the best remediation techniques suitable for the contamination
levels and the localization of contaminants. |
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Keywords: | PAHs Pipelines Pumping stations Soil contamination TPHs |
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