On-Site Bioremediation Systems Reduce Crude Oil Contamination

Oilfield properties frequently have areas where soils contain concentrations of crude oil. These soils can be either hazardous wastes or designated wastes under regulatory guidelines. As a result, property owners and financial institutions face potential liabilities when oilfield properties are transferred to new operators, abandoned, or converted to other uses. Modern, well-designed soil bioremediation systems are cost-effective ways to treat soils that contain concentrations of crude oil, and these systems can eliminate an owner's subsequent liabilities. A modern on-site bioremediation system requires significantly less surface area, results in lower operating costs, and provides more effective, expeditious results than traditional land-farming practices. It also eliminates potential long-term liabilities and is typically more cost-effective than excavation and off-site disposal of oilfield soils. Case studies indicate that on-site bioremediation systems have reduced crude oil contamination in soil to levels acceptable to regulatory agencies in less than 20 weeks in some cases, less than ten weeks.