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Author: Publisher: ISBN: Category : Languages : en Pages : 177
Book Description
This report presents the results of an intrinsic remediation treatability study (TS) performed by Parsons Engineering Science, Inc. (Parsons ES) at Site OT 24, MacDill Air Force Base (AFB, the Base), Tampa, Florida to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) contamination in the shallow saturated zone. Soil and groundwater contamination is documented for the site, with contamination being present in the aqueous (i.e., dissolved) and gaseous phases and as residual light nonaqueous-phase liquid (LNAPL) within the aquifer matrix. The presence of mobile LNAPL (free product) in the immediate vicinity of the contamination source area is also indicated at this site. This study focused on the impact of dissolved BTEX on the shallow groundwater system at and downgradient from the site. The impact of dissolved chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride on the shallow groundwater system is also discussed. Site history and the results of soil, groundwater, and sediment investigations conducted previously are summarized in this report.
Author: Publisher: ISBN: Category : Languages : en Pages : 177
Book Description
This report presents the results of an intrinsic remediation treatability study (TS) performed by Parsons Engineering Science, Inc. (Parsons ES) at Site OT 24, MacDill Air Force Base (AFB, the Base), Tampa, Florida to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) contamination in the shallow saturated zone. Soil and groundwater contamination is documented for the site, with contamination being present in the aqueous (i.e., dissolved) and gaseous phases and as residual light nonaqueous-phase liquid (LNAPL) within the aquifer matrix. The presence of mobile LNAPL (free product) in the immediate vicinity of the contamination source area is also indicated at this site. This study focused on the impact of dissolved BTEX on the shallow groundwater system at and downgradient from the site. The impact of dissolved chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride on the shallow groundwater system is also discussed. Site history and the results of soil, groundwater, and sediment investigations conducted previously are summarized in this report.
Author: Parsons engineering science inc denver co Publisher: ISBN: Category : Languages : en Pages : 240
Book Description
This report presents the results of an intrinsic remediation treatability s tudy (TS) performed by Parsons Engineering Science, Inc. (Parsons ES) at Site OT 24, MacDill Air Force Base (AFB, the Base), Tampa, Florida to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) contamination in the shallow saturated zone. Soil and groundwater contamination is documented for the site, with contamination being present in the aqueous (i.e., dissolved) and gaseous phases and as residual light nonaqueous-phase liquid (LNAPL) within the aquifer matrix. The presence of mobile LNAPL (free product) in the immediate vicinity of the contamination source area is also indicated at this site. This study focused on the impact of dissolved BTEX on the shallow groundwater system at and down-gradient from the site. The impact of dissolved chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride on the shallow groundwater system is also discussed. Site history and the results of soil, groundwater, and sediment investigations conducted previously also are summarized in this report.
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
This report presents the results of an intrinsic remediation treatability study (TS) performed by Parsons Engineering Science, Inc. (Parsons ES) at Site OT 24, MacDill Air Force Base (AFB, the Base), Tampa, Florida to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) contamination in the shallow saturated zone. Soil and groundwater contamination is documented for the site, with contamination being present in the aqueous (i.e., dissolved) and gaseous phases and as residual light nonaqueous-phase liquid (LNAPL) within the aquifer matrix. The presence of mobile LNAPL (free product) in the immediate vicinity of the contamination source area is also indicated at this site. This study focused on the impact of dissolved BTEX on the shallow groundwater system at and downgradient from the site. The impact of dissolved chlorinated aliphatic hydrocarbons (CAHs) such as vinyl chloride on the shallow groundwater system is also discussed. Site history and the results of soil, groundwater, and sediment investigations conducted previously also are summarized in this report.
Author: Publisher: ISBN: Category : Languages : en Pages : 124
Book Description
This work plan, prepared by Parsons Engineering Science, Inc. (Parsons ES), presents the scope of work for the collection of data necessary to conduct a treatability study (TS) for remediation of ground water contaminated with petroleum hydrocarbons at three sites located at MacDill Air Force Base (AFB) in Tampa, Florida, (the Base). The three sites are the Energy Management Test Laboratory (Site OT-24), Pumphouse 75 (Site 57), and the Army Air Force Exchange Service (AAFES) Gas Station (Site 56).
Author: Publisher: ISBN: Category : Languages : en Pages : 115
Book Description
This work plan, prepared by Parsons Engineering Science, Inc. (Parsons ES), formerly Engineering-Science, Inc. (ES), presents the scope of work required for the collection of data necessary to develop a treatability study (TS). The TS will address remediation of ground water contaminated with petroleum hydrocarbons at Sites OT-1 and SS-42 (near Building 5009) at Wurtsmith Air Force Base (Base), in Oscoda, Michigan. This work plan is oriented toward the collection of hydrogeologic and chemical data that will be used to document the occurrence of intrinsic remediation of benzene, toluene, ethylbenzene, and xylenes (BTEX) dissolved in ground water. Intrinsic remediation is a risk management strategy that relies on natural attenuation to control the risks associated with exposure to contaminants in the subsurface. However, data collected under this program will also allow for the evaluation of several remedial options, such as free product removal; bioventing for source removal; air sparging; and intrinsic remediation with long-term monitoring (LTM). This work plan was developed based on discussions among representatives from the Air Force Center for Environmental Excellence (AFCEE) Technology Transfer Division, Michigan Department of Natural Resources (MDNR), Wurtsmith AFB, and Parsons ES at a meeting at the Base on August 24, 1994.
Author: Publisher: ISBN: Category : Languages : en Pages : 329
Book Description
Intrinsic remediation is an innovative remedial approach that relies on natural attenuation to remediate contaminants dissolved in groundwater. Mechanisms for natural attenuation of benzene, toluene, ethylbenzene, and xylenes (BTEX) include biodegradation, advection, dispersion, dilution froin recharge, sorption, and volatilization. Of these processes, biodegradation is the only mechanism working to transform contaminants into innocuous byproducts. Intrinsic bioremediation occurs when indigenous microorganisms work to bring about a reduction in the total mass of contamination in the subsurface without the addition of nutrients. Patterns and rates of intrinsic remediation can vary markedly from site to site depending on governing physical and chemical processes. The main emphasis of the work described herein was to evaluate if natural attenuation mechanisms would be sufficient to reduce concentrations of dissolved fuel- related compounds in groundwater to levels that meet federal and state groundwater protection standards. The potential for these mechanisms to effectively reduce the concentrations of chlorinated solvents at the site, which is ancillary to the scope of this program, also was qualitatively considered. This study is not intended to be contaminant assessment report, a remedial action options evaluation, or a remedial action plan; rather, it is provided for the use of the Base and its prime environmental contractor(s) as information to be used for future decision making regarding this site.
Author: Publisher: ISBN: Category : Languages : en Pages : 91
Book Description
This work plan, prepared by Parsons Engineering Science, Inc. (Parsons ES) formerly Science, Inc. (ES), presents the scope of work required for the collection of data necessary to conduct a treatability study (TS) for remediation of groundwater contaminated with petroleum hydrocarbons at Installation Restoration Program (IRP) Site SS-16 (a former military gasoline service station site), Langley Air Force Base (AFB) in Hampton, Virginia. Hydrogeologic and groundwater chemical data necessary to evaluate multiple remedial options will be collected under this program; however, this work plan is primarily oriented toward the collection of Hydrogeologic data to be used in support of intrinsic remediation (natural attenuation) for restoration of fuel-hydrocarbon- contaminated groundwater. Other remedial options will be considered in conjunction with intrinsic remediation during the TS, including free product removal; groundwater extraction and treatment (i.e., pump and treat); biosparging; bioslurping; and long-term monitoring.
Author: Publisher: ISBN: Category : Languages : en Pages : 433
Book Description
This report presents the results of a treatability study performed by Parsons Engineering Science, Inc. (Parsons ES) at Fire Protection Training Area 3 (FPTA3), Offutt Air Force Base, Nebraska 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 groundwater. Residual light nonaqueous-phase liquid (LNAPL) is present within the soil and dissolved contamination is present in the groundwater. There is no evidence of mobile LNAPL (free product) at this site. This study focused on the impact of dissolved BTEX on the shallow groundwater system at the site. Dissolved chlorinated solvents also are present in the shallow groundwater; therefore, the impact of the dissolved chlorinated solvents was studied as well. Site history and the results of soil and groundwater investigations conducted previously are also summarized in this report.
Author: Publisher: ISBN: Category : Languages : en Pages : 170
Book Description
This report was prepared by Parsons Engineering Science, Inc. (Parsons ES) and presents the results of a treatability study (TS) conducted to evaluate the use of intrinsic remediation for remediation of fuel-hydrocarbon-contaminated groundwater at Installation Restoration Program (IRP) Site S 5-16 (a former military gasoline service station site) at Langley Air Force Base (AFB, the Base), in Hampton, Virginia. Previous investigations determined that fuel hydrocarbons had been released into the soil and shallow groundwater at the site. The main emphasis of the work described herein was to evaluate if naturally occurring attenuation mechanisms would be sufficient to reduce dissolved fuel-related compounds in groundwater to levels that meet state-specified groundwater protection standards. This study is not intended to be a contamination assessment report or a remedial action plan; rather, it is provided for the use of the Base and its prime environmental contractor(s) as information to be used for future decision making regarding this site.
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