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Title: JV Task 59-Demonstration of Accelerated In Situ Contaminant Degradation by Vacuum-Enhanced Nutrient Distribution

Abstract

The Energy & Environmental Research Center (EERC) conducted remediation of hydrocarbon-contaminated soils and groundwater at a former Mohler Oil site in Bismarck, North Dakota. The remedial strategy was based on the application of two innovative concepts: (1) design and deployment of the mobile extraction, treatment, and injection units to overcome site limitations associated with urban settings in high-traffic areas and (2) vacuum-controlled nutrient injection within and on the periphery of an induced hydraulic and pneumatic depression. Combined contaminant recovery since the beginning of the project in June 2003 totals over 13,600 lb ({approx}6,170 kg) of hydrocarbons, equivalent to 2176 gallons (8236 l) of product. In situ delivery of 1504 Ib (682 kg) of ionic nitrate and 540 Ib (245 kg) of dissolved oxygen translates into further reduction of about 489 Ib (222 kg) of benzene for the same period and provides for long-term stimulation of the natural attenuation process. In addition to contaminant recovered by extraction and reduced by in situ biodegradation, a total of 4136 Ib (1876 kg) of oxygen was delivered to the saturated zone, resulting in further in situ reduction of an estimated 1324 lb (600 kg) of dissolved-phase hydrocarbons. Based on the results of the EERCmore » demonstration, the North Dakota Department of Health approved site abandonment and termination of the corrective action.« less

Authors:
Publication Date:
Research Org.:
University Of North Dakota
Sponsoring Org.:
USDOE
OSTI Identifier:
903316
DOE Contract Number:
FC26-98FT40321
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; BENZENE; BIODEGRADATION; DESIGN; DISTRIBUTION; HYDRAULICS; HYDROCARBONS; NATURAL ATTENUATION; NITRATES; NUTRIENTS; OXYGEN; PNEUMATICS; SOILS; STIMULATION; CONTAMINATION

Citation Formats

Jaroslav Solc. JV Task 59-Demonstration of Accelerated In Situ Contaminant Degradation by Vacuum-Enhanced Nutrient Distribution. United States: N. p., 2007. Web. doi:10.2172/903316.
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Jaroslav Solc. JV Task 59-Demonstration of Accelerated In Situ Contaminant Degradation by Vacuum-Enhanced Nutrient Distribution. United States. doi:10.2172/903316.
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Jaroslav Solc. Thu . "JV Task 59-Demonstration of Accelerated In Situ Contaminant Degradation by Vacuum-Enhanced Nutrient Distribution". United States. doi:10.2172/903316. https://www.osti.gov/servlets/purl/903316.
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@article{osti_903316,
title = {JV Task 59-Demonstration of Accelerated In Situ Contaminant Degradation by Vacuum-Enhanced Nutrient Distribution},
author = {Jaroslav Solc},
abstractNote = {The Energy & Environmental Research Center (EERC) conducted remediation of hydrocarbon-contaminated soils and groundwater at a former Mohler Oil site in Bismarck, North Dakota. The remedial strategy was based on the application of two innovative concepts: (1) design and deployment of the mobile extraction, treatment, and injection units to overcome site limitations associated with urban settings in high-traffic areas and (2) vacuum-controlled nutrient injection within and on the periphery of an induced hydraulic and pneumatic depression. Combined contaminant recovery since the beginning of the project in June 2003 totals over 13,600 lb ({approx}6,170 kg) of hydrocarbons, equivalent to 2176 gallons (8236 l) of product. In situ delivery of 1504 Ib (682 kg) of ionic nitrate and 540 Ib (245 kg) of dissolved oxygen translates into further reduction of about 489 Ib (222 kg) of benzene for the same period and provides for long-term stimulation of the natural attenuation process. In addition to contaminant recovered by extraction and reduced by in situ biodegradation, a total of 4136 Ib (1876 kg) of oxygen was delivered to the saturated zone, resulting in further in situ reduction of an estimated 1324 lb (600 kg) of dissolved-phase hydrocarbons. Based on the results of the EERC demonstration, the North Dakota Department of Health approved site abandonment and termination of the corrective action.},
doi = {10.2172/903316},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}
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Technical Report:
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DOI:  10.2172/903316
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  • The Energy and Environmental Research Center (EERC) conducted a demonstration of a vacuum-enhanced recovery and feasibility of permeable treatment barriers for soil and groundwater remediation at an Independent Oil (Former Star Mart) site in Hazen, North Dakota. A total of 62,584 lb (28,388) of contaminant was recovered from impacted soils and groundwater. The mass of recovered contaminant equals approximately 10,116 gallons of product. Groundwater quality monitoring confirmed the continuing contaminants of concern (COC) reduction trend in most monitoring wells and an average benzene reduction of 85% within the entire impacted area since remediation system start-up. A comparison of mass balancemore » estimates for the extraction system with biodegradation stoichiometry using the assimilative capacity of the groundwater indicates that in situ natural attenuation processes became a dominant factor in reducing COCs and that improved site conditions justified termination of corrective action. The unit cost of contaminant recovery was $15. 26/lb ($33.65/kg). If in situ degradation resulting from oxygen delivery is considered, the cost would be $12.62/b ($27.82/kg) of contaminant recovered or degraded.« less

  • ;
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  • ;
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  • ; ; ; ...
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