CH#954 - Diesel/Gasoline Remediation


Courtesy of Bio-Systems International

A Truck and Fueling Plaza

A tank area that had contained both diesel and gasoline tanks was discovered to have several leaks. The tanks from the pit area were removed. Definition and characterization revealed that not only the tank area was contaminated, but the contaminate plume had migrated under an area where a new building was being constructed. Initial laboratory analysis revealed TPH (Total Petroleum Hydrocarbon) levels of 26,000 ppm using the U.S. EPA Method 8015, modified. These levels made the site actionable.

Due to the extent of the contaminate plume and the fact that it was located beneath a new building under construction, bioremediation was selected as the most economical method of remediating this site. BIO-SYSTEMS augmented insitu subsurface bioremediation process was selected. BIO-SYSTEMS™ product (a proprietary blend of microaerophilic bacteria and micronutrients) was propagated on site. The batch solution was then placed onto the contaminate plume. Routine PID readings of degradation components were monitored and recorded. Bioremediation began on September 19, 1990 and readings below clean-up levels were obtained on December 10, 1990. Final samples were obtained and forwarded to an independent laboratory for verification results. U.S. EPA Method 5030/8020 showed nondetect results.

By utilizing BIO-SYSTEMS bioremediation process and products, the property has no ties to a disposal site. The owners avoided considerable expense in eliminating contamination from beneath the new building. In addition, the owners have no PRP (Potentially Responsible Parties) liabilities as the gasoline and diesel contamination was eliminated.

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