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Bixby UST
Bixby, OK
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Client:
Young's
Service Sation, Bixby, OK
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Free phase recovery tanks and surfactant mixing system at Bixy UST site |
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The Bixby UST site is located in town of Bixby, Oklahoma, near City
of Tulsa in northeastern Oklahoma. The site was impacted by free phase
of gasoline and diesel fuel released from different leakage underground
storage tanks. Depth to the contaminated zone was 6 to 14 feet. Site
geology was fine sand and the volume of contaminated soil was estimated
to be 8,900 cubic yard. The primary goal was to remove the free phase
gasoline and diesel fuels. The secondary goal was to achieve site-specific
treatment level (SSTL) in timely manner (in two to three months vs.
several years using conventional remedial technologies).
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TASKS
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- Injection
of one pore volume (120,000 gallons) of surfactant
solution (< 1 wt%) to recover free phase product
in 13 days
- Chemical
oxidation (convention Fenton's Reagent)
(0.4 wt% 130,000 gallons injected in 6 days) was used
to treat the residual dilute plume to achieve the SSTL
- Initial observed product thickness levels were between
0.5 to 2.2 feet in the monitoring wells. No evidence
of free phase gasoline and diesel fuel was detected during
the post surfactant sampling event
- Post chemical oxidation indicated benzene concentrations
were between non-detected to 1.8 mg/L (SSTL = 5.6 mg/L)
- Project was completed in two and a-half months
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