Case Study

Case Study for Chemical Oxidation

Contaminant: TPHg
Type of Site: Industrial
Significance: In Situ Soil Mixing
Location: Hayward, CA

Overview:

NEW! A former industrial facility in northern California contained two underground storage tanks (USTs) which were shown to be partially decayed and disintegrated during tank removal activities. Samples taken within the UST removal area indicated gasoline constituents benzene, toluene, ethylbenzene and xylenes (BTEX) at approximately 70 parts per million (ppm) in soil. Following soil and groundwater investigations, more than 2,100 tons of petroleum-impacted soil was excavated and transported offsite for disposal. An additional 8,000 cubic yards of soil was excavated and treated onsite. After excavation activities were completed, reassessment of the site was performed and resulted in a treatment area more extensive than previously investigated. Continued excavation was deemed too costly and a remedial strategy was sought to treat the remaining petroleum hydrocarbons onsite. A soil mixing design using RegenOx™ and ORC Advanced® was implemented.

Documents:

Chemical Oxidation of TPHg and TPHd in San Francisco Bay Mud via In Situ Dual Axis Soil Mixing"