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Assessment Of Natural Attenuation Of Contamination From Three Source Areas In The East Management Unit Dover Air Force Base Kent County Delaware
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Book Synopsis Assessment of Natural Attenuation of Contamination from Three Source Areas in the East Management Unit, Dover Air Force Base, Kent County, Delaware by : L. Joseph Bachman
Download or read book Assessment of Natural Attenuation of Contamination from Three Source Areas in the East Management Unit, Dover Air Force Base, Kent County, Delaware written by L. Joseph Bachman and published by . This book was released on 1998 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of Natural Attenuation of Contamination from Three Source Areas in the East Management Unit, Dover Air Force Base, Kent County, Delaware by : L. Joseph Bachman
Download or read book Assessment of Natural Attenuation of Contamination from Three Source Areas in the East Management Unit, Dover Air Force Base, Kent County, Delaware written by L. Joseph Bachman and published by . This book was released on 1998 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Publications of the Geological Survey by : Geological Survey (U.S.)
Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeology and Simulation of Ground-water Flow at Dover Air Force Base, Delaware by : Kurt C. Hinaman
Download or read book Hydrogeology and Simulation of Ground-water Flow at Dover Air Force Base, Delaware written by Kurt C. Hinaman and published by . This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeology And Simulation Of Ground-Water Flow At Dover Air Force Base, Delaware, U.S. Geological Survey, Water-Resources Investigations Report 99-4224, 2000 by :
Download or read book Hydrogeology And Simulation Of Ground-Water Flow At Dover Air Force Base, Delaware, U.S. Geological Survey, Water-Resources Investigations Report 99-4224, 2000 written by and published by . This book was released on 2000 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-resources Investigations Report by :
Download or read book Water-resources Investigations Report written by and published by . This book was released on 2001 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of natural attenuation of ground-water contamination at sites FT03 LF13 and WP14 LF15 Dover Air Force Base Delaware by :
Download or read book Assessment of natural attenuation of ground-water contamination at sites FT03 LF13 and WP14 LF15 Dover Air Force Base Delaware written by and published by DIANE Publishing. This book was released on with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the Geological Survey by : Geological Survey (U.S.)
Download or read book Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of Natural Attenuation of Ground-water Contamination at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware by : Jeffrey Ralph Barbaro
Download or read book Assessment of Natural Attenuation of Ground-water Contamination at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware written by Jeffrey Ralph Barbaro and published by . This book was released on 2002 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Publications of the U.S. Geological Survey by :
Download or read book New Publications of the U.S. Geological Survey written by and published by . This book was released on 2000 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1999 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Attenuation Assessment Plan by :
Download or read book Natural Attenuation Assessment Plan written by and published by . This book was released on 1997 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous investigations at Travis AFB concluded that groundwater in portions of the Base is contaminated with chlorinated hydrocarbons and petroleum hydrocarbons. The nature and extent of the contamination are described in Remedial Investigation (RI) reports prepared for four operable units (OUs) at Travis AFB. Each OU covers a portion of the Base and encompasses multiple sites. Natural attenuation of contaminated groundwater is a potential remedy considered for the NEWIOU. In the remedy selection process, the Natural Attenuation alternative (Alternative 2) was compared with the No Action alternative (Alternative 1) and the Extraction, Treatment, and Discharge alternative (Alternative 3). In general, sites considered favorable for natural attenuation are those for which "active" remediation (i.e., extraction, treatment, and discharge) may not be cost-effective because of the relatively low concentrations of contaminants, strong sorption of pollutants on soils, and the potential for natural processes to remediate the contaminant plume in a reasonable amount of time while being fully protective of human health and the environment. The NEWIOU Groundwater WOD selected natural attenuation as the interim remedy for one site (LF006) and identified two sites and a portion of five other sites where the selection of the interim remedy has been deferred, but where natural attenuation will be assessed further. More details regarding the relationship of these sites to the Natural Attenuation alternative are provided in the FS, Proposed Plan, and Groundwater IROD. While the nature and extent of contamination at these sites are characterized in the RI reports, data are lacking with respect to natural attenuation. The understanding of natural attenuation has only recently developed to the point where a systematic assessment of the complex processes involved is possible.
Book Synopsis Remediation by Natural Attenuation Treatability Study for Site SS-04, Langley Air Force Base, Virginia by :
Download or read book Remediation by Natural Attenuation Treatability Study for Site SS-04, Langley Air Force Base, Virginia written by and published by . This book was released on 1999 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a treatability study for remediation by natural attenuation (RNA TS), completed by Parsons Engineering Science, Inc. (Parsons ES) at IRP Site SS-04, Langley Air Force Base (AFB), Virginia. The TS evaluates the use of natural attenuation with long-term monitoring (LTM) as a remedial option for dissolved hydrocarbon fuel constituents in groundwater. The occurrence of groundwater and soil contamination at the site, as a consequence of leakage of petroleum-based fuel (jet fuel or JP-4), has been documented during previous investigations. This TS focuses primarily on the impact of dissolved fuel constituents, in particular benzene, toluene, ethylbenzene, and xylene isomers (BTEX), in the groundwater system at, and downgradient from, the source area. Residual fuel hydrocarbon contamination in soil surrounding the source area (the abandoned USTs) was remediated from 1992 through 1996 with a vapor extraction system. The site history and the results of previously- completed soil and groundwater investigations are summarized in this report. Soil and groundwater samples were collected from the site and analyzed to obtain the information necessary for the transport evaluation and RNA demonstration. Physical and chemical data collected under this program were supplemented (where necessary) with data collected during previous site characterization investigations and monitoring events. Biodegradation of fuel hydrocarbons can occur when an indigenous population of hydrocarbon-degrading microorganisms is present in the subsurface, and sufficient concentrations of electron acceptors, nutrients, and electron donors (including fuel hydrocarbons) are available to these organisms. Several lines of chemical and geochemical evidence indicate that dissolved BTEX constituents are undergoing biodegradation within and downgradient from the contaminant source area.
Book Synopsis Site Characterization of Area 6, Dover Air Force Base, in Support of Natural Attenuation and Enhanced Anaerobic Bioremediation Projects by : Nancy R. Grosso
Download or read book Site Characterization of Area 6, Dover Air Force Base, in Support of Natural Attenuation and Enhanced Anaerobic Bioremediation Projects written by Nancy R. Grosso and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A field program for site characterization of targeted study areas at the Dover Air Force Base was conducted between January 16, 1995, and March 9, 1995. The stated objectives of the investigation, 'to characterize the stratigraphy, depth to groundwater, groundwater flow directions, and the vertical and horizontal distribution of contaminants within the accelerated anaerobic biodegradation test plot and the intrinsic bioremediation test plot, ' were accomplished in a phased approach. The site stratigraphy was characterized based on the interpretation and correlation of recent cone penetrometer technology (CPT) logs with existing well logs. Depth to water and aerial groundwater flow directions across the study area were determined from contoured water-level measurements in new piezometers and existing monitor wells. The extent of contamination, both vertical and horizontal, was determined based on 'StrataProbe' groundwater sampling and laboratory analysis for selected target constituents. This report summarizes the work conducted, describes the details of the effort, and reports the conclusions. The activity portion of this report is divided into sections corresponding to the three phases of the fieldwork described in the work plan: CPT logging, soil and groundwater sampling, and piezometer installation.
Book Synopsis Intrinsic Remediation Engineering Evaluation/Cost Analysis Addendum for Site SS27/XYZ, Dover Air Force Base Dover, Delaware by :
Download or read book Intrinsic Remediation Engineering Evaluation/Cost Analysis Addendum for Site SS27/XYZ, Dover Air Force Base Dover, Delaware written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Work Plan for a Demonstration of Remediation by Natural Attenuation for Groundwater at OU 4 by :
Download or read book Work Plan for a Demonstration of Remediation by Natural Attenuation for Groundwater at OU 4 written by and published by . This book was released on 1997 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work plan (WP) was prepared by Parsons Engineering Science, Inc. (Parsons ES) to define the scope of work and procedures required to evaluate remediation by natural attenuation (RNA) of groundwater contaminated with chlorinated aliphatic hydrocarbons (CAHs) at Operable Unit 4 (OU 4), Hill Air Force Base (AFB), Utah. To this end, this work plan presents a preliminary conceptual model based on available data, and provides suggested protocols to fill the identified data gaps necessary to develop a more thorough conceptual model of groundwater flow and RNA at OU 4. The CAH plume covers an area of about 60 acres of which approximately 45 acres are off-base. Landfills have been identified as the primary source of the groundwater contamination. Trichloroethene (TCE) is the primary CAll contaminant. Leachate from the landfills has migrated into shallow groundwater and has been transported under the influence of steep hydraulic gradients to hillside discharge points. For the purposes of this WP, RNA is defined as a management strategy that relies on natural attenuation mechanisms to bring about a reduction in the total mass of contaminants dissolved in groundwater, and to control receptor exposure risks associated with this contamination. Natural attenuation is defined by the United States Environmental Protection Agency (USEPA) Offices of Research and Development (ORD) and Solid Waste and Emergency Response (OSWER), as follows: The biodegradation, dispersion, sorption, volatilization, and/or chemical and biochemical stabilization of contaminants to effectively reduce contaminant toxicity, mobility, or volume to levels that are protective ofhuman health and the ecosystem. As suggested by this definition, there are destrnctive and non-destmctive mechanisms of natural attenuation. Of these processes, biodegradation is the only mechanism working to transform contaminants into innocuous by.
