Intrinsic Remediation Engineering Evaluation/Cost Analysis Addendum for UST Site 870, Hill Air Force Base Ogden, Utah PDF Download

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Languages : en
Pages : 44

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The intent of the EE/CA Addendum was to determine the role of natural attenuation in remediating fuel contamination in groundwater at Site 870. The EE/CA was conducted to evaluate the use of intrinsic remediation with long-term monitoring (LTM) for remediation of fuel hydrocarbon contamination dissolved in groundwater at UST Site 870. This update summarizes the results of the third sampling event performed as part of long-term groundwater monitoring at the site. This sampling was conducted in September 1998 by researchers from the US Environmental Protection Agency (USEPA) National Risk Management Research Laboratory (NRMRL) Subsurface Protection and Remediation Division. The original EE/CA sampling event was conducted in August 1993 with the first long-term sampling occurring in July 1994 and the second long-term sampling occurring in September 1995. The main emphasis of this summary is to evaluate changes in dissolved benzene, toluene, ethylbenzene, and xylene (BTEX) concentrations, plume extent, and natural attenuation mechanisms through time.

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Languages : en
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This report presents the results of an engineering evaluation/cost analysis (EE/CA) performed by Parsons Engineering Science, Inc. (Parsons ES) (formerly known as Engineering-Science, Inc. (ES)) at Hill Air Force Base, Utah to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring as a remedial option for dissolved-phase benzene, toluene, ethylbenzene, and xylene (BTEX) contamination in the shallow saturated zone near underground storage tank (UST) Site 870. Soil and ground water contamination is known to occur at the site, with contamination being present in the dissolved and gaseous phases, and as light nonaqueous phase liquid (LNAPL). This study focused on the impact of dissolved-phase BTEX on the shallow ground water system at the site. Site history and the results of soil and ground water investigations conducted previously are also summarized in this report.

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Languages : en
Pages : 176

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This report presents the results of an engineering evaluation/cost analysis (BE/CA) performed by Parsons Engineering Science, Inc. (Parsons ES) formerly known as Engineering-Science, Inc. (ES) at Hill Air Force Base, Utah to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring as a remedial option for dissolved-phase benzene, toluene, ethylbenzene, and xylene (BTEX) contamination in the shallow saturated zone near underground storage tank (UST) Site 870. Soil and ground water contamination is known to occur at the site, with contamination being present in the dissolved and gaseous phases, and as light nonaqueous phase liquid (LNAPL). This study focused on the impact of dissolved-phase BTEX on the shallow ground water system at the site. Site history and the results of soil and ground water investigations conducted previously are also summarized in this report.

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Languages : en
Pages : 95

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This work plan was prepared by Engineering-Science, Inc. (ES) and presents the scope of work required for the collection of data necessary to conduct an engineering evaluation/cost analysis (EB/CA) for remediation of fuel hydrocarbon-contaminated ground water at underground storage tank (UST) Site 870, Hill Air Force Base (AFB), Utah. Several remedial options will be evaluated during the EE/CA, including free product removal; ground water extraction, treatment, and reinjection (i.e., pump and treat); air sparging; and natural contaminant attenuation with long-term monitoring. All hydrogeologic and ground water chemical data necessary to evaluate the various remedial options will be collected under this program; however, this work plan is oriented toward the collection of hydrogeologic data to be used as input into the Bioplume II ground water model in support of the natural attenuation (intrinsic remediation) with long-term monitoring remedial option for restoration of fuel hydrocarbon-contaminated ground water.

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Languages : en
Pages : 69

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This report was prepared for the Air Force Center for Environmental Excellence (AFCEE) by Parsons Engineering Science, Inc. (Parsons ES) as a second addendum (Addendum II) to the Final Intrinsic Remediation Engineering Evaluation/Cost Analysis (EE/CA) (Parsons ES, 1995). The EE/CA was conducted to evaluate the use of natural attenuation with long-term monitoring (LTM) for remediation of fuel hydrocarbons dissolved in groundwater at site FT-002, Plattsburgh Air Force Base (AFB), New Y%rk. The report also provided an assessment of the concentration and distribution of chlorinated aliphatic hydrocarbons (CAHs) dissolved in groundwater.

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Languages : en
Pages : 0

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The intent of the Addendum was to evaluate the effectiveness of natural attenuation in remediating fuel contamination in groundwater at Site SS27/XYZ. The primary objective of this addendum is to evaluate changes in (1) concentrations of dissolved BTEX, (2) BTEX plume extent, and (3) natural attenuation mechanisms that are responsible for reducing BTEX mass and concentration between April 1994 and February 1999. Data collected in April 1994 for the EE/CA are used as a baseline for comparison. Groundwater samples were collected in September 1997 and February 1999 by researchers from the United States Environmental Protection Agency (USEPA) National Risk Management Research Laboratory (NRMRL) Subsurface Protection and Remediation Division.

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Languages : en
Pages : 43

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This report presents the results of an addendum to the Intrinsic Remediation Engineering Evaluation/Cost Analysis (EE/CA) for the Former Aerospace Ground Equipment (AGE) Fueling Facility Site performed by Parsons Engineering Science (Parsons ES) at Seymour-Johnson Air Force Base (AFB), North Carolina (Parsons ES, 1996). The EE/CA was conducted to evaluate the use of intrinsic remediation with long-term monitoring (LTM) to address fuel-hydrocarbon-contaminated groundwater at the AGE Site. This addendum to the EE/CA summarizes the results of a groundwater sampling event conducted in April 2001 by the United States Environmental Protection Agency (US EPA) National Risk Management Research Laboratory (NRMRL) Subsurface Protection Division and Parsons ES. Results of this sampling event are used to evaluate spatial and temporal trends of groundwater contaminants at the AGE Site.

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Languages : en
Pages : 53

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This report was prepared for the Air Force Center for Environmental Excellence (AFCEE) by Parsons Engineering Science, Inc. (Parsons ES) as an addendum to the Final Intrinsic Remediation Engineering Evaluation/Cost Analysis (EE/CA) for the Former Car Care Center, Bolling Air Force Base (AFB), Washington, District of Columbia (DC) (Parsons ES, 1997a). The EE/CA was conducted to evaluate the use of natural attenuation (intrinsic remediation) with longterm monitoring (LTM) for remediation of fuel hydrocarbon contamination dissolved in groundwater at the Former Car Care Center. This addendum summarizes the results of the third sampling event performed as a part of the evaluation of natural attenuation at the site. This sampling was conducted in September 1997 by researchers from the US Environmental Protection Agency (USEPA) National Risk Management Research Laboratory (NRMRL) Subsurface Protection and Remediation Division. The original EE/CA sampling event was conducted in August 1994, and the first natural attenuation update sampling occurred in June 1996. The main emphasis of this summary is to evaluate changes in dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations, plume extent, and natural attenuation mechanisms through time. Results, calculations, and predictions presented in the EE/CA are used as the basis for comparison.

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Languages : en
Pages : 0

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This report presents the results of an Engineering Evaluation/Cost Analysis (EE/CA) performed by Parsons Engineering Science, Inc. (Parsons ES) at Plattsburgh Air Force Base, New York, to evaluate if naturally occurring attenuation mechanisms would be sufficient to reduce dissolved fuel-related compounds in shallow ground water at and migrating from the former Fire Training Area (Site FT-002) to levels that meet federal- and state-specified ground water protection standards. Several site investigations completed at Site FT-002 under the Department of Defense (DOD) Installation Restoration Program (IRP) indicate that the soil and ground water associated with and downgradient of the former fire training area is contaminated with JP-4-related compounds and chlorinated solvents. Significant light nonaqueous phase liquid (LNAPL) still exists at the site, which acts as a continuing source of contamination mass to the ground water. The main emphasis of the work described herein was to quantitatively investigate the fate and transport of dissolved benzene, toluene, ethylbenzene, and total xylenes (BTEX) in the shallow ground water at the site. The fate and transport of dissolved chlorinated solvents (i.e., trichloroethene (TCE), cis- and trans-dichloroethene (DCE), and vinyl chloride) in shallow ground water was qualitatively considered to evaluate whether remedial technologies that may be appropriate for the BTEX compounds would also be effective on these other site-related contaminants.

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Languages : en
Pages : 540

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Book Description
This report presents the results of the investigation performed by Parsons Engineering Science, Inc. (Parsons ES) at Bolling Air Force Base (AFB), District of Columbia to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and xylene (BTEX) contamination in the shallow saturated zone. Parsons ES conducted field investigations during August 1994 and June 1996 at the former Car Care Center Site (Building 4). The source of the contamination was leaking underground storage tanks and other associated equipment. BTEX and total volatile hydrocarbons (TVH) was determined to be dissolved in groundwater and absorbed to soils. Residual light nonaqueous phase liquid (LNAPL) was found throughout the soil column, both above and below the groundwater interface. However, minimal mobile LNAPL (free product) was observed at the site during the field investigations. This study focused on the impact of dissolved BTEX and residual LNAPL on the shallow groundwater system at the site.