Case Study: Refined Oil and Crude Oil Spill at a Refinery
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Site Location & Description: Refinery in South Texas
The refinery had a number of spills in several different areas within their facility. The hydrocarbon contaminated soil was a mix of refined and crude oils. The soil was excavated, collected and consolidated into one area, a bio-pad. The total amount of soil treated in the bio-pad was approximately 100 cubic yards.
Contaminants Treated: Refinery petroleum hydrocarbon waste and crude oils.
Geology: Caliche and Sandy Soil
Starting Levels: TPH levels from 8,000 to over 14,000 ppm. A sample composite was prepared in the treated area by collecting 10 samples from randomly selected points.
Cleanup Standards - per the State of Texas (TCEQ):
- TPH (total petroleum hydrocarbons) - less than 50 ppm.
- BTEX (benzene,toluene,ethylbenzene,& xylenes) - non detect
- MTBE (methyl tertiary-butyl ether) - non detect
Treatment Method - in situ: The soil was treated once with the Piranha mixture and tilled. Water was added at approximately 10%.