Emily Majcher, PE
Emily Majcher is a Hydrologist at the U.S. Geological Survey, Maryland-Delaware-DC Water Science Center in the Baltimore office.
Her current work is focused on occurrence, fate, and mitigation of contaminants in the environment. She strives to provide technical understanding and solutions to environmental restoration challenges.
Professional Experience
Senior Hydrologist (2015-current) USGS, MD-DE-DC Water Science Center
Contracted Engineer (2011-2015) CNTS for USGS, MD-DE-DC Water Science Center
Hydrologist (2001- 2007), USGS, MD-DE-DC Water Science Center
Education and Certifications
M.S. in Environmental Soil Science, The Pennsylvania State University, University Park, PA
B.S. in Environmental Engineering, Purdue University, West Lafayette, IN
P.E. in Environmental Engineering, State of Maryland (since 2003)
Science and Products
Tracking Status and Trends in Seven Key Indicators of River and Stream Condition in the Chesapeake Bay Watershed
Identifying and tracking the status of, and trends in, stream health within the Chesapeake Bay watershed is essential to understanding the past, present, and future trajectory of the watershed’s resources and ecological condition. A team of USGS scientists is meeting this need with an initiative to track the status of, and trends in, key indicators of the health of non-tidal freshwater streams...
Urban Waters Federal Partnership—Patapsco Watershed (Baltimore, Md. region)
Several watersheds in the Baltimore region have elevated PCB loads in tidal waters. Local jurisdictions are responsible for reducing PCB loading from their watersheds. The USGS is embarking on a pilot study in the Patapsco watershed that will help determine sources of PCBs and will demonstrate innovative monitoring and analysis techniques for more efficient use of mitigation resouces.
Applied Biosolids Data Input Summed from Fields to National Hydrography Dataset Plus V2 in Virginia, 2024 Applied Biosolids Data Input Summed from Fields to National Hydrography Dataset Plus V2 in Virginia, 2024
This metadata record contains two tables with reported and calculated amounts of biosolids applied to agricultural land within Virginia in 2024 at different scales. Included in the dataset are (1) mass of land-applied biosolids calculated for NHDPlus Version 2.1 (NHDPlusV2) reach catchments in 2024 as a CSV and (2) reported amount of biosolids applied to land by county in 2024 as a CSV...
Volatile organic compound and biogeochemical parameter concentrations from samples collected in porewater, groundwater, and rock matrix, Fort Detrick, Frederick, Maryland, 2018-2020 Volatile organic compound and biogeochemical parameter concentrations from samples collected in porewater, groundwater, and rock matrix, Fort Detrick, Frederick, Maryland, 2018-2020
This metadata record contains 14 tables of biogeochemical data collected to evaluate the fate and transport of chlorinated ethenes in Area B groundwater, Fort Detrick, Frederick, Maryland collected during 2018-2020. Included in the dataset are (1) FtD_All_Constituents_NA_2019: concentrations of all non-VOC constituents analyzed as part of the natural attenuation sampling event in 2019,...
Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022 Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022
This metadata record consists of 16 tables containing data generated from laboratory experiments of trichloroethene (TCE) biodegradation and during field characterization and performance monitoring of a groundwater bioremediation pilot test conducted at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota. The data was collected from December 2020 through December...
Per-and polyfluoroalkyl substances and polychlorinated biphenyls in influent, effluent, and biosolids samples collected from municipal wastewater treatment plants of the Patapsco and Potomac watersheds, 2021-2023 Per-and polyfluoroalkyl substances and polychlorinated biphenyls in influent, effluent, and biosolids samples collected from municipal wastewater treatment plants of the Patapsco and Potomac watersheds, 2021-2023
This metadata record consists of 3 tables containing per-and-poly-fluoroalkyl substances (PFAS) and polychlorinated biphenyls (PCB) concentration data of wastewater and biosolid samples from wastewater treatment plants within the Patapsco and Potomac watersheds. The PCB concentration data was used to assess the occurrence and fate of PCB in wastewater treatment plants within the Patapsco...
Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus
This metadata record contains two tables with reported and calculated amounts of biosolids applied to agricultural land within the Chesapeake Bay watershed in 2023 at different scales. Included in the dataset are (1) mass of land-applied biosolids calculated for NHDPlus Version 2.1 (NHDPlusV2) reach catchments in 2023 and (2) actual amount of biosolids applied to land by county in 2023...
Priority Toxic Contaminant Metadata Inventory and Associated Total Polychlorinated Biphenyls Concentration Data Priority Toxic Contaminant Metadata Inventory and Associated Total Polychlorinated Biphenyls Concentration Data
In June 2019, the U.S. Geological Survey Maryland-Delaware-District of Columbia Water Science Center (MD-DE-DC WSC) team began to collect and inventory available information on toxic contaminants within the Chesapeake Bay Watershed. State agencies were contacted to determine available data. Also, the National Water Information System (NWIS) and National Water Quality Database (NWQD) were...
Polychlorinated Biphenyl (PCB) Concentrations of Passive Samplers, Solids, Fat, Oil, and Greases (FOG), and Road Sediments; and Dissolved Organic Carbon (DOC), Total Suspended Solids (TSS), and Particulate Organic Carbon (POC) Concentrations in the Back R Polychlorinated Biphenyl (PCB) Concentrations of Passive Samplers, Solids, Fat, Oil, and Greases (FOG), and Road Sediments; and Dissolved Organic Carbon (DOC), Total Suspended Solids (TSS), and Particulate Organic Carbon (POC) Concentrations in the Back R
This metadata record contains 6 tables used to assess sources of Polychlorinated Biphenyls (PCB) in the Back River watershed, Baltimore City, Maryland. Included in the dataset are PCB concentrations of surface water and porewater passive samplers from Herring Run, Moores Run, tidal Back River, and Back River Wastewater Treatment Plant; PCB concentrations of bed sediments and other solids...
Volatile Organic Compound and Other Analyses Associated with Laboratory Microcosm Experiments to Determine Biodegradation Rates in Fractured Sedimentary Rock at the Former Naval Air Warfare Center in West Trenton, New Jersey, 2016–18 Volatile Organic Compound and Other Analyses Associated with Laboratory Microcosm Experiments to Determine Biodegradation Rates in Fractured Sedimentary Rock at the Former Naval Air Warfare Center in West Trenton, New Jersey, 2016–18
This metadata record presents analytical results for laboratory microcosms conducted during 2016-18 as part of a study to develop a field test and numerical interpretation method to determine the effective diffusion coefficients and sorption coefficients of trichloroethene (TCE) and daughter products in the rock matrix of sedimentary rock, as well as biodegradation rate coefficients in...
Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015 Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015
This dataset presents analytical results for laboratory and field tests conducted during 2015�19 as part of a bioremediation study in the wetland study area at Standard Chlorine of Delaware, Inc. Superfund site. Included in the dataset are (1) volatile organic compound and metal concentrations from field sampling in the wetland area, (2) results from in situ microcosms in the reactive...
Nutrient, Bacteria, Ammonia, & TSS Annual Loads; Green & Gray Infrastructure; Land Cover Change; and Climate Data in the Gwynns Falls Subwatersheds, Baltimore, MD, 1998-2016 Nutrient, Bacteria, Ammonia, & TSS Annual Loads; Green & Gray Infrastructure; Land Cover Change; and Climate Data in the Gwynns Falls Subwatersheds, Baltimore, MD, 1998-2016
This metadata record document contains 7 tables used to assess factors influencing long-term water quality changes in the Gwynns Falls, Baltimore, MD, 1998-2016. Included are daily discharge measurements (source: United States Geological Survey (USGS), 2016), weekly nutrient sampling concentrations (source: Baltimore Ecosystem Study (BES), 2015), and approximately monthly bacteria...
Filter Total Items: 15
Treatability study to evaluate bioremediation of trichloroethene at Site K, former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020–22 Treatability study to evaluate bioremediation of trichloroethene at Site K, former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020–22
Executive Summary Chlorinated solvents, including trichloroethene (TCE) and other chlorinated volatile organic compounds (cVOCs), are widespread contaminants that can be treated by bioremediation approaches that enhance anaerobic reductive dechlorination. Reductive dechlorination can be enhanced either through the addition of an electron donor (biostimulation) or the addition of a known
Authors
Michelle M. Lorah, Emily H. Majcher, Adam C. Mumford, Ellie P. Foss, Trevor P. Needham, Andrew W. Psoras, Colin T. Livdahl, Jared J. Trost, Andrew M. Berg, Bridgette F. Polite, Denise M. Akob, Isabelle M. Cozzarelli
Tracking status and trends in seven key indicators of river and stream condition in the Chesapeake Bay watershed Tracking status and trends in seven key indicators of river and stream condition in the Chesapeake Bay watershed
Freshwater streams and rivers are recognized as vital habitats within the Chesapeake Bay watershed, which has been undergoing extensive restoration efforts for more than 30 years. Resource managers need to understand stream and river condition and how these conditions are changing over time to determine whether regional long-term restoration and conservation goals are being met. The...
Authors
Lindsey J. Boyle, Samuel H. Austin, Matthew J. Cashman, Zachary J. Clifton, John W. Clune, James E. Colgin, Kaitlyn E.M. Elliott, Rosemary M. Fanelli, Ellie P. Foss, Nathaniel P. Hitt, Elizabeth A. Hittle, Coral M. Howe, Emily H. Majcher, Kelly O. Maloney, Christopher A. Mason, Marina J. Metes, Douglas L. Moyer, Trevor P. Needham, Karli M. Rogers, Joshua J. Thompson, Guoxiang Yang, Tammy M. Zimmerman
Contaminated stormwater sediment source tracking for polychlorinated biphenyls in an urban watershed of the Chesapeake Bay, United States Contaminated stormwater sediment source tracking for polychlorinated biphenyls in an urban watershed of the Chesapeake Bay, United States
Fine-grained sediment in stormwater acts as a vector for persistent organic pollutants, like polychlorinated biphenyls (PCBs), through mobilization from sources within drainage areas of impacted urban watersheds. This study implemented a novel approach to identify the relative contributions of various landscape and stream sources of sediment from the Back River watershed in eastern...
Authors
Ellie P. Foss, Zachary J. Clifton, Emily H. Majcher, Trevor P. Needham, Andrew W. Psoras
Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach
Managing per- and polyfluoroalkyl substances (PFAS) in water resources requires a basin-scale approach. Predicted environmental concentrations (PEC) and stream-vulnerability scores for PFAS were determined for the Potomac River watershed in the eastern United States. Approximately 15% of stream reaches contained municipal and/or industrial wastewater treatment plant (WWTP) discharges...
Authors
Larry B. Barber, Samuel Adam Miller, Lee Blaney, Paul M. Bradley, Kaycee E. Faunce, Jacob Fleck, Malinda Frick, Ke He, Ryan D. Hollins, Conor J. Lewellyn, Emily H. Majcher, Mitchell A. McAdoo, Kelly Smalling
Evaluation and review of best management practices for the reduction of polychlorinated biphenyls to the Chesapeake Bay Evaluation and review of best management practices for the reduction of polychlorinated biphenyls to the Chesapeake Bay
Polychlorinated biphenyls (PCBs) continue to impact the environment due to historic and ongoing anthropogenic sources (for example, industrial and agricultural), despite their ban. Contaminated stormwater has been identified as a vector for PCB transport to many estuaries impaired by PCBs. Management of these regulated discharges is typically achieved by best management practices (BMPs)...
Authors
Trevor P. Needham, Emily H. Majcher, Ellie P. Foss, Olivia Devereux
Tracking status and trends in seven key indicators of stream health in the Chesapeake Bay watershed Tracking status and trends in seven key indicators of stream health in the Chesapeake Bay watershed
“The Bay Connects us, the Bay reflects us” writes Tom Horton in the book “Turning the Tide—Saving the Chesapeake Bay”. The Chesapeake Bay watershed contains the largest estuary in the United States. The watershed stretches north to Cooperstown, New York, south to Lynchburg and Virginia Beach, Virginia, west to Pendleton County, West Virginia, and east to Seaford, Delaware, and Scranton
Authors
Samuel H. Austin, Matthew J. Cashman, John W. Clune, James E. Colgin, Rosemary M. Fanelli, Kevin P. Krause, Emily H. Majcher, Kelly O. Maloney, Christopher A. Mason, Douglas L. Moyer, Tammy M. Zimmerman
By
Ecosystems Mission Area, Water Resources Mission Area, Environmental Health Program, Chesapeake Bay Activities, Eastern Ecological Science Center, Maryland-Delaware-D.C. Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Virginia and West Virginia Water Science Center
Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed
No abstract available.
Authors
Kelly L. Smalling, Michelle M. Lorah, Greg Allen, Lee Blaney, Mark Cantwell, Lara Fowler, Thomas F. Ihde, Mark Mank, Emily H. Majcher, George Onyullo, Scott W. Phillips
Refining sources of polychlorinated biphenyls in the Back River watershed, Baltimore, Maryland, 2018–2020 Refining sources of polychlorinated biphenyls in the Back River watershed, Baltimore, Maryland, 2018–2020
Older urban landscapes present unique and complex stressors to urban streams and their habitats through the introduction of legacy and emerging toxic contaminants. Contaminant sources are often associated with various developed land uses such as older residential areas, active and former industrial sites, contaminated sites, and effluents from municipal wastewater treatment plant...
Authors
Emily H. Majcher, Upal Ghosh, Trevor P. Needham, Nathalie Lombard, Ellie P. Foss, Mandare Bokare, Sarahana Joshee, Louis Cheung, Jada Damond, Michelle M. Lorah
Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure
The steadily rising global urban population has placed substantial strain on urban water quality, and this strain is projected to increase for the foreseeable future. Considerable attention has been given to the hydrological and physico-chemical effects of urbanization on stream ecosystems. However, due to the relative infancy of the field of urban ecology, long-term water quality...
Authors
Alexander J. Reisinger, Ellen L Woytowitz, Emily H. Majcher, Emma J. Rosi, Kenneth T. Belt, Jonathan M. Duncan, Sujay S. Kaushal, Peter M. Groffman
Effective solubility assessment for organic analytes in liquid samples, BKK class I landfill, West Covina, California, 2014–16 Effective solubility assessment for organic analytes in liquid samples, BKK class I landfill, West Covina, California, 2014–16
Executive Summary The U.S. Geological Survey assessed the effective solubilities of organic analytes at the BKK Class Ⅰ Landfill site, West Covina, California, in cooperation with the California Department of Toxic Substances Control, using available data for liquid samples collected within (in-waste) and below (sub-waste) the landfill in 2014–16. The primary purpose of the effective...
Authors
Michelle M. Lorah, Emily H. Majcher, Carol J. Morel
Factors affecting long-term trends in surface-water quality in the Gwynns Falls watershed, Baltimore City and County, Maryland, 1998–2016 Factors affecting long-term trends in surface-water quality in the Gwynns Falls watershed, Baltimore City and County, Maryland, 1998–2016
Factors affecting water-quality trends in urban streams are not well understood, despite current regulatory requirements and considerable ongoing investments in gray and green infrastructure. To address this gap, long-term water-quality trends and factors affecting these trends were examined in the Gwynns Falls, Maryland, watershed during 1998–2016 in cooperation with Blue Water...
Authors
Emily H. Majcher, Ellen L. Woytowitz, Alexander J. Reisinger, Peter M. Groffman
Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12 Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12
Wetlands at the Standard Chlorine of Delaware, Inc. Superfund Site (SCD) in New Castle County, Delaware, are affected by contamination with chlorobenzenes and benzene from past waste storage and disposal, spills, leaks, and contaminated groundwater discharge. In cooperation with the U.S. Environmental Protection Agency, the U.S. Geological Survey began an investigation in June 2009 to...
Authors
Michelle M. Lorah, Charles W. Walker, Anna C. Baker, Jessica A. Teunis, Emily Majcher, Michael J. Brayton, Jeff P. Raffensperger, Isabelle M. Cozzarelli
Non-USGS Publications**
Majcher, E.H., Draft Summary Report of the Urban Waters Monitoring Workshop, 18 June 2014, Baltimore, MD. http://www.urbanwaters.gov/baltimore/pdf/Urban-Water-Monitoring-Assets_091014.pdf
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Tracking Status and Trends in Seven Key Indicators of River and Stream Condition in the Chesapeake Bay Watershed
Identifying and tracking the status of, and trends in, stream health within the Chesapeake Bay watershed is essential to understanding the past, present, and future trajectory of the watershed’s resources and ecological condition. A team of USGS scientists is meeting this need with an initiative to track the status of, and trends in, key indicators of the health of non-tidal freshwater streams...
Urban Waters Federal Partnership—Patapsco Watershed (Baltimore, Md. region)
Several watersheds in the Baltimore region have elevated PCB loads in tidal waters. Local jurisdictions are responsible for reducing PCB loading from their watersheds. The USGS is embarking on a pilot study in the Patapsco watershed that will help determine sources of PCBs and will demonstrate innovative monitoring and analysis techniques for more efficient use of mitigation resouces.
Applied Biosolids Data Input Summed from Fields to National Hydrography Dataset Plus V2 in Virginia, 2024 Applied Biosolids Data Input Summed from Fields to National Hydrography Dataset Plus V2 in Virginia, 2024
This metadata record contains two tables with reported and calculated amounts of biosolids applied to agricultural land within Virginia in 2024 at different scales. Included in the dataset are (1) mass of land-applied biosolids calculated for NHDPlus Version 2.1 (NHDPlusV2) reach catchments in 2024 as a CSV and (2) reported amount of biosolids applied to land by county in 2024 as a CSV...
Volatile organic compound and biogeochemical parameter concentrations from samples collected in porewater, groundwater, and rock matrix, Fort Detrick, Frederick, Maryland, 2018-2020 Volatile organic compound and biogeochemical parameter concentrations from samples collected in porewater, groundwater, and rock matrix, Fort Detrick, Frederick, Maryland, 2018-2020
This metadata record contains 14 tables of biogeochemical data collected to evaluate the fate and transport of chlorinated ethenes in Area B groundwater, Fort Detrick, Frederick, Maryland collected during 2018-2020. Included in the dataset are (1) FtD_All_Constituents_NA_2019: concentrations of all non-VOC constituents analyzed as part of the natural attenuation sampling event in 2019,...
Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022 Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022
This metadata record consists of 16 tables containing data generated from laboratory experiments of trichloroethene (TCE) biodegradation and during field characterization and performance monitoring of a groundwater bioremediation pilot test conducted at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota. The data was collected from December 2020 through December...
Per-and polyfluoroalkyl substances and polychlorinated biphenyls in influent, effluent, and biosolids samples collected from municipal wastewater treatment plants of the Patapsco and Potomac watersheds, 2021-2023 Per-and polyfluoroalkyl substances and polychlorinated biphenyls in influent, effluent, and biosolids samples collected from municipal wastewater treatment plants of the Patapsco and Potomac watersheds, 2021-2023
This metadata record consists of 3 tables containing per-and-poly-fluoroalkyl substances (PFAS) and polychlorinated biphenyls (PCB) concentration data of wastewater and biosolid samples from wastewater treatment plants within the Patapsco and Potomac watersheds. The PCB concentration data was used to assess the occurrence and fate of PCB in wastewater treatment plants within the Patapsco...
Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus Biosolids Data Input Disaggregation from County to National Hydrography Dataset Plus
This metadata record contains two tables with reported and calculated amounts of biosolids applied to agricultural land within the Chesapeake Bay watershed in 2023 at different scales. Included in the dataset are (1) mass of land-applied biosolids calculated for NHDPlus Version 2.1 (NHDPlusV2) reach catchments in 2023 and (2) actual amount of biosolids applied to land by county in 2023...
Priority Toxic Contaminant Metadata Inventory and Associated Total Polychlorinated Biphenyls Concentration Data Priority Toxic Contaminant Metadata Inventory and Associated Total Polychlorinated Biphenyls Concentration Data
In June 2019, the U.S. Geological Survey Maryland-Delaware-District of Columbia Water Science Center (MD-DE-DC WSC) team began to collect and inventory available information on toxic contaminants within the Chesapeake Bay Watershed. State agencies were contacted to determine available data. Also, the National Water Information System (NWIS) and National Water Quality Database (NWQD) were...
Polychlorinated Biphenyl (PCB) Concentrations of Passive Samplers, Solids, Fat, Oil, and Greases (FOG), and Road Sediments; and Dissolved Organic Carbon (DOC), Total Suspended Solids (TSS), and Particulate Organic Carbon (POC) Concentrations in the Back R Polychlorinated Biphenyl (PCB) Concentrations of Passive Samplers, Solids, Fat, Oil, and Greases (FOG), and Road Sediments; and Dissolved Organic Carbon (DOC), Total Suspended Solids (TSS), and Particulate Organic Carbon (POC) Concentrations in the Back R
This metadata record contains 6 tables used to assess sources of Polychlorinated Biphenyls (PCB) in the Back River watershed, Baltimore City, Maryland. Included in the dataset are PCB concentrations of surface water and porewater passive samplers from Herring Run, Moores Run, tidal Back River, and Back River Wastewater Treatment Plant; PCB concentrations of bed sediments and other solids...
Volatile Organic Compound and Other Analyses Associated with Laboratory Microcosm Experiments to Determine Biodegradation Rates in Fractured Sedimentary Rock at the Former Naval Air Warfare Center in West Trenton, New Jersey, 2016–18 Volatile Organic Compound and Other Analyses Associated with Laboratory Microcosm Experiments to Determine Biodegradation Rates in Fractured Sedimentary Rock at the Former Naval Air Warfare Center in West Trenton, New Jersey, 2016–18
This metadata record presents analytical results for laboratory microcosms conducted during 2016-18 as part of a study to develop a field test and numerical interpretation method to determine the effective diffusion coefficients and sorption coefficients of trichloroethene (TCE) and daughter products in the rock matrix of sedimentary rock, as well as biodegradation rate coefficients in...
Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015 Volatile organic compound and metal concentrations associated with field sampling and laboratory experiments and in situ microcosm results, wetland bioremediation study, Standard Chlorine of Delaware, Inc. Superfund site, New Castle County, Delaware, 2015
This dataset presents analytical results for laboratory and field tests conducted during 2015�19 as part of a bioremediation study in the wetland study area at Standard Chlorine of Delaware, Inc. Superfund site. Included in the dataset are (1) volatile organic compound and metal concentrations from field sampling in the wetland area, (2) results from in situ microcosms in the reactive...
Nutrient, Bacteria, Ammonia, & TSS Annual Loads; Green & Gray Infrastructure; Land Cover Change; and Climate Data in the Gwynns Falls Subwatersheds, Baltimore, MD, 1998-2016 Nutrient, Bacteria, Ammonia, & TSS Annual Loads; Green & Gray Infrastructure; Land Cover Change; and Climate Data in the Gwynns Falls Subwatersheds, Baltimore, MD, 1998-2016
This metadata record document contains 7 tables used to assess factors influencing long-term water quality changes in the Gwynns Falls, Baltimore, MD, 1998-2016. Included are daily discharge measurements (source: United States Geological Survey (USGS), 2016), weekly nutrient sampling concentrations (source: Baltimore Ecosystem Study (BES), 2015), and approximately monthly bacteria...
Filter Total Items: 15
Treatability study to evaluate bioremediation of trichloroethene at Site K, former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020–22 Treatability study to evaluate bioremediation of trichloroethene at Site K, former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020–22
Executive Summary Chlorinated solvents, including trichloroethene (TCE) and other chlorinated volatile organic compounds (cVOCs), are widespread contaminants that can be treated by bioremediation approaches that enhance anaerobic reductive dechlorination. Reductive dechlorination can be enhanced either through the addition of an electron donor (biostimulation) or the addition of a known
Authors
Michelle M. Lorah, Emily H. Majcher, Adam C. Mumford, Ellie P. Foss, Trevor P. Needham, Andrew W. Psoras, Colin T. Livdahl, Jared J. Trost, Andrew M. Berg, Bridgette F. Polite, Denise M. Akob, Isabelle M. Cozzarelli
Tracking status and trends in seven key indicators of river and stream condition in the Chesapeake Bay watershed Tracking status and trends in seven key indicators of river and stream condition in the Chesapeake Bay watershed
Freshwater streams and rivers are recognized as vital habitats within the Chesapeake Bay watershed, which has been undergoing extensive restoration efforts for more than 30 years. Resource managers need to understand stream and river condition and how these conditions are changing over time to determine whether regional long-term restoration and conservation goals are being met. The...
Authors
Lindsey J. Boyle, Samuel H. Austin, Matthew J. Cashman, Zachary J. Clifton, John W. Clune, James E. Colgin, Kaitlyn E.M. Elliott, Rosemary M. Fanelli, Ellie P. Foss, Nathaniel P. Hitt, Elizabeth A. Hittle, Coral M. Howe, Emily H. Majcher, Kelly O. Maloney, Christopher A. Mason, Marina J. Metes, Douglas L. Moyer, Trevor P. Needham, Karli M. Rogers, Joshua J. Thompson, Guoxiang Yang, Tammy M. Zimmerman
Contaminated stormwater sediment source tracking for polychlorinated biphenyls in an urban watershed of the Chesapeake Bay, United States Contaminated stormwater sediment source tracking for polychlorinated biphenyls in an urban watershed of the Chesapeake Bay, United States
Fine-grained sediment in stormwater acts as a vector for persistent organic pollutants, like polychlorinated biphenyls (PCBs), through mobilization from sources within drainage areas of impacted urban watersheds. This study implemented a novel approach to identify the relative contributions of various landscape and stream sources of sediment from the Back River watershed in eastern...
Authors
Ellie P. Foss, Zachary J. Clifton, Emily H. Majcher, Trevor P. Needham, Andrew W. Psoras
Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach Municipal and industrial wastewater treatment plant effluent contributions to per- and polyfluoroalkyl substances in the Potomac River: A basin-scale measuring and modeling approach
Managing per- and polyfluoroalkyl substances (PFAS) in water resources requires a basin-scale approach. Predicted environmental concentrations (PEC) and stream-vulnerability scores for PFAS were determined for the Potomac River watershed in the eastern United States. Approximately 15% of stream reaches contained municipal and/or industrial wastewater treatment plant (WWTP) discharges...
Authors
Larry B. Barber, Samuel Adam Miller, Lee Blaney, Paul M. Bradley, Kaycee E. Faunce, Jacob Fleck, Malinda Frick, Ke He, Ryan D. Hollins, Conor J. Lewellyn, Emily H. Majcher, Mitchell A. McAdoo, Kelly Smalling
Evaluation and review of best management practices for the reduction of polychlorinated biphenyls to the Chesapeake Bay Evaluation and review of best management practices for the reduction of polychlorinated biphenyls to the Chesapeake Bay
Polychlorinated biphenyls (PCBs) continue to impact the environment due to historic and ongoing anthropogenic sources (for example, industrial and agricultural), despite their ban. Contaminated stormwater has been identified as a vector for PCB transport to many estuaries impaired by PCBs. Management of these regulated discharges is typically achieved by best management practices (BMPs)...
Authors
Trevor P. Needham, Emily H. Majcher, Ellie P. Foss, Olivia Devereux
Tracking status and trends in seven key indicators of stream health in the Chesapeake Bay watershed Tracking status and trends in seven key indicators of stream health in the Chesapeake Bay watershed
“The Bay Connects us, the Bay reflects us” writes Tom Horton in the book “Turning the Tide—Saving the Chesapeake Bay”. The Chesapeake Bay watershed contains the largest estuary in the United States. The watershed stretches north to Cooperstown, New York, south to Lynchburg and Virginia Beach, Virginia, west to Pendleton County, West Virginia, and east to Seaford, Delaware, and Scranton
Authors
Samuel H. Austin, Matthew J. Cashman, John W. Clune, James E. Colgin, Rosemary M. Fanelli, Kevin P. Krause, Emily H. Majcher, Kelly O. Maloney, Christopher A. Mason, Douglas L. Moyer, Tammy M. Zimmerman
By
Ecosystems Mission Area, Water Resources Mission Area, Environmental Health Program, Chesapeake Bay Activities, Eastern Ecological Science Center, Maryland-Delaware-D.C. Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Virginia and West Virginia Water Science Center
Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed
No abstract available.
Authors
Kelly L. Smalling, Michelle M. Lorah, Greg Allen, Lee Blaney, Mark Cantwell, Lara Fowler, Thomas F. Ihde, Mark Mank, Emily H. Majcher, George Onyullo, Scott W. Phillips
Refining sources of polychlorinated biphenyls in the Back River watershed, Baltimore, Maryland, 2018–2020 Refining sources of polychlorinated biphenyls in the Back River watershed, Baltimore, Maryland, 2018–2020
Older urban landscapes present unique and complex stressors to urban streams and their habitats through the introduction of legacy and emerging toxic contaminants. Contaminant sources are often associated with various developed land uses such as older residential areas, active and former industrial sites, contaminated sites, and effluents from municipal wastewater treatment plant...
Authors
Emily H. Majcher, Upal Ghosh, Trevor P. Needham, Nathalie Lombard, Ellie P. Foss, Mandare Bokare, Sarahana Joshee, Louis Cheung, Jada Damond, Michelle M. Lorah
Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure
The steadily rising global urban population has placed substantial strain on urban water quality, and this strain is projected to increase for the foreseeable future. Considerable attention has been given to the hydrological and physico-chemical effects of urbanization on stream ecosystems. However, due to the relative infancy of the field of urban ecology, long-term water quality...
Authors
Alexander J. Reisinger, Ellen L Woytowitz, Emily H. Majcher, Emma J. Rosi, Kenneth T. Belt, Jonathan M. Duncan, Sujay S. Kaushal, Peter M. Groffman
Effective solubility assessment for organic analytes in liquid samples, BKK class I landfill, West Covina, California, 2014–16 Effective solubility assessment for organic analytes in liquid samples, BKK class I landfill, West Covina, California, 2014–16
Executive Summary The U.S. Geological Survey assessed the effective solubilities of organic analytes at the BKK Class Ⅰ Landfill site, West Covina, California, in cooperation with the California Department of Toxic Substances Control, using available data for liquid samples collected within (in-waste) and below (sub-waste) the landfill in 2014–16. The primary purpose of the effective...
Authors
Michelle M. Lorah, Emily H. Majcher, Carol J. Morel
Factors affecting long-term trends in surface-water quality in the Gwynns Falls watershed, Baltimore City and County, Maryland, 1998–2016 Factors affecting long-term trends in surface-water quality in the Gwynns Falls watershed, Baltimore City and County, Maryland, 1998–2016
Factors affecting water-quality trends in urban streams are not well understood, despite current regulatory requirements and considerable ongoing investments in gray and green infrastructure. To address this gap, long-term water-quality trends and factors affecting these trends were examined in the Gwynns Falls, Maryland, watershed during 1998–2016 in cooperation with Blue Water...
Authors
Emily H. Majcher, Ellen L. Woytowitz, Alexander J. Reisinger, Peter M. Groffman
Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12 Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009-12
Wetlands at the Standard Chlorine of Delaware, Inc. Superfund Site (SCD) in New Castle County, Delaware, are affected by contamination with chlorobenzenes and benzene from past waste storage and disposal, spills, leaks, and contaminated groundwater discharge. In cooperation with the U.S. Environmental Protection Agency, the U.S. Geological Survey began an investigation in June 2009 to...
Authors
Michelle M. Lorah, Charles W. Walker, Anna C. Baker, Jessica A. Teunis, Emily Majcher, Michael J. Brayton, Jeff P. Raffensperger, Isabelle M. Cozzarelli
Non-USGS Publications**
Majcher, E.H., Draft Summary Report of the Urban Waters Monitoring Workshop, 18 June 2014, Baltimore, MD. http://www.urbanwaters.gov/baltimore/pdf/Urban-Water-Monitoring-Assets_091014.pdf
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.