Employment Loss
Oil refineries are large, complicated affairs and may provide hundreds of people with skilled, well-paying jobs. If new legislation, or some other sudden, dramatic or unexpected event, forces the refinery to shut down, the abandonment of the oil refinery can lead to a sudden employment shock. Abandoned oil refineries may only employ a handful of people to patrol the grounds or handle the dismantling and sale of refinery equipment, leaving a large hole in the employment opportunities for a community.
Health and Safety Concerns
Oil refineries left completely abandoned may be inviting for scavengers looking for metals they can steal, the urban homeless or "urban explorers" --- adrenaline junkies who enjoy exploring abandoned buildings. Abandoned refineries present dangers to these individuals: asbestos contamination, floors and ceilings weakened by years of neglect, wild animals, exposed sharp metal and the possibility of falls from a great height. Because resourceful people will find ways around locked gates, the only way to prevent infiltration may be costly monitoring systems or the expense of round-the-clock monitoring by an on-site security guard.
Environmental Pollution
Refining oil is dirty business, and abandoned refineries may contain hazardous chemicals or improperly disposed of chemicals when the refinery closed. As a result, abandoned oil refineries or refining sites are Environmental Protection Agency Superfund properties; oil refineries can contain toxins, including heavy metals like lead, arsenic, chromium and mercury; benzene and derivatives, including pyrene, xylene and toluene; asbestos; phenols; hydrochloric acid; and ammonia. These chemicals can pollute the air, soil and groundwater around the oil refinery, and cleanup costs can be substantial.
Land Reuse
Abandoned oil refineries can make it tough to reuse that property. The existing buildings and support infrastructure must be carefully dismantled and disposed of; frequently, contamination requires extensive --- and costly --- soil remediation before the plot can be safely inhabited. In some cases, bacteria may be introduced to help speed biological breakdowns of hazardous chemicals; in others, the soil itself may need to be removed, buried safely far away from human habitation, then replaced.