Passive in-situ cometabolic biotreatment of gasoline and diesel in soil and groundwater: An electrokinetic enhanced bioremediation case history
- Environment and Technology Services, San Francisco, CA (United States)
This paper presents the results of passive in-situ biotreatment of gasoline and diesel conducted at the subject facility in Hayward, California. Past spills of petroleum hydrocarbon fuels from an underground storage tank farm caused soil and shallow groundwater contamination in the clayey Bay Mud. The soil contamination was limited to a depth of about 10 feet with total petroleum hydrocarbons (TPH) concentration of 100 to 3,900 ppm. Due to the low permeability of the clayey Bay Mud, a passive in-situ biotreatment (PISB) system was designed and implemented for both soil and groundwater plumes. The PISB consisted of a system of electrokinetic, oxygen, nutrient and moisture enhancement units covering the soil and groundwater plumes. The electrokinetic system was installed to promote rapid migration of nutrient oxidant between electrodes to enhance the in-situ biodegradation processes. The gasoline and diesel in soil was remediated to less than 100 ppm of TPH. The TPH in groundwater was remediated to less than 10 ppm of TPH. The TPH in groundwater was remediated to less than 10 ppm. The groundwater remediation is in progress and the target cleanup levels were to be less than 10 ppm TPH and BTEX to less than 0.005, 1.0, 0.7 and 10.0 ppm respectively which are all below the MCL under the EPA primary drinking water standard. The total duration of this PISB was completed in less than 4 weeks.
- OSTI ID:
- 69849
- Report Number(s):
- CONF-941189-; ISBN 1-56590-016-2; TRN: IM9529%%237
- Resource Relation:
- Conference: SUPERFUND XV: 15th environmental conference and exhibition for the hazardous materials/hazardous waste management industry, Washington, DC (United States), 29 Nov - 1 Dec 1994; Other Information: PBD: 1994; Related Information: Is Part Of Superfund XV conference proceedings. Volume 2; PB: 877 p.
- Country of Publication:
- United States
- Language:
- English
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