Stephanie Perkins
Stephanie is a Chemist at the Columbia Environmental Research Center.
Science and Products
Spatial and temporal trends in occurrence of emerging and legacy contaminants in the Lower Columbia River 2008-2010
The Lower Columbia River in Oregon and Washington, USA, is an important resource for aquatic and terrestrial organisms, agriculture, and commerce. An 86-mile stretch of the river was sampled over a 3 year period in order to determine the spatial and temporal trends in the occurrence and concentration of water-borne organic contaminants. Sampling occurred at 10 sites along this stretch and at 1 sit
Authors
David A. Alvarez, Stephanie D. Perkins, Elena B. Nilsen, Jennifer L. Morace
Bioassay of estrogenicity and chemical analyses of estrogens in streams across the United States associated with livestock operations
Animal manures, used as a nitrogen source for crop production, are often associated with negative impacts on nutrient levels in surface water. The concentrations of estrogens in streams from these manures also are of concern due to potential endocrine disruption in aquatic species. Streams associated with livestock operations were sampled by discrete samples (n = 38) or by time-integrated polar or
Authors
David A. Alvarez, Nancy W. Shappell, L.O. Billey, Dietrich S. Bermudez, Vickie S. Wilson, Dana W. Kolpin, Stephanie D. Perkins, Nicola Evans, William T. Foreman, James L. Gray, J.M. Shipitalo, Michael T. Meyer
Bottom sediment as a source of organic contaminants in Lake Mead, Nevada, USA
Treated wastewater effluent from Las Vegas, Nevada and surrounding communities' flow through Las Vegas Wash (LVW) into the Lake Mead National Recreational Area at Las Vegas Bay (LVB). Lake sediment is a likely sink for many hydrophobic synthetic organic compounds (SOCs); however, partitioning between the sediment and the overlying water could result in the sediment acting as a secondary contaminan
Authors
David A. Alvarez, Michael R. Rosen, Stephanie D. Perkins, Walter L. Cranor, Vickie L. Schroeder, Tammy L. Jones-Lepp
Evaluation of passive samplers for long-term monitoring of organic compounds in the untreated drinking water supply for the city of Eugene, Oregon, September–October 2007
Two types of passive samplers, polar organic chemical integrative samplers (POCIS) and semipermeable membrane devices (SPMDs), were deployed at three sites in the McKenzie River basin during September-October 2007. The McKenzie River is the source of drinking water for the city of Eugene, Oregon, and the work presented here was designed to evaluate the use of POCIS and SMPDs as part of a long-term
Authors
Kathleen A. McCarthy, David A. Alvarez, Chauncey W. Anderson, Walter L. Cranor, Stephanie D. Perkins, Vickie Schroeder
Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants
The seasonal occurrence of organic contaminants, many of which are potential endocrine disruptors, entering the Potomac River, USA, watershed was investigated using a two-pronged approach during the fall of 2005 and spring of 2006. Passive samplers (semipermeable membrane device and polar organic chemical integrative sampler [POCIS]) were deployed in tandem at sites above and below wastewater trea
Authors
D.A. Alvarez, W.L. Cranor, S.D. Perkins, V.L. Schroeder, L. R. Iwanowicz, R.C. Clark, C.P. Guy, A.E. Pinkney, V. S. Blazer, J.E. Mullican
Reconnaissance of persistent and emerging contaminants in the Shenandoah and James River Basins, Virginia, during Spring of 2007
Fish exhibiting external lesions, incidences of intersex, and death have recently been observed in the Shenandoah and James River Basins. These basins are characterized by widespread agriculture (intensive in some areas), several major industrial discharges, numerous sewage treatment plant discharges, and urban, transportation, and residential growth that has increased rapidly in recent years. Nin
Authors
David A. Alvarez, Walter Cranor, Stephanie D. Perkins, Vickie Schroeder, Stephen Werner, Edward Furlong, Donald Kain, Robert Brent
Investigation of organic chemicals potentially responsible for mortality and intersex in fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007
Declining fish health, fish exhibiting external lesions, incidences of intersex, and death, have been observed recently within the Potomac River basin. The basin receives surface runoff and direct inputs from agricultural, industrial, and other human activities. Two locations on the North Fork of the Shenandoah River were selected for study in an attempt to identify chemicals that may have contrib
Authors
David A. Alvarez, Walter L. Cranor, Stephanie D. Perkins, Vickie L. Schroeder, Stephen Werner, Edward T. Furlong, John Holmes
Chemical and toxicologic assessment of organic contaminants in surface water using passive samplers
Passive sampling methodologies were used to conduct a chemical and toxicologic assessment of organic contaminants in the surface waters of three geographically distinct agricultural watersheds. A selection of current-use agrochemicals and persistent organic pollutants, including polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and organochlorine pesticides, were targeted using the pola
Authors
D.A. Alvarez, W.L. Cranor, S.D. Perkins, R.C. Clark, S.B. Smith
Science and Products
Spatial and temporal trends in occurrence of emerging and legacy contaminants in the Lower Columbia River 2008-2010
The Lower Columbia River in Oregon and Washington, USA, is an important resource for aquatic and terrestrial organisms, agriculture, and commerce. An 86-mile stretch of the river was sampled over a 3 year period in order to determine the spatial and temporal trends in the occurrence and concentration of water-borne organic contaminants. Sampling occurred at 10 sites along this stretch and at 1 sit
Authors
David A. Alvarez, Stephanie D. Perkins, Elena B. Nilsen, Jennifer L. Morace
Bioassay of estrogenicity and chemical analyses of estrogens in streams across the United States associated with livestock operations
Animal manures, used as a nitrogen source for crop production, are often associated with negative impacts on nutrient levels in surface water. The concentrations of estrogens in streams from these manures also are of concern due to potential endocrine disruption in aquatic species. Streams associated with livestock operations were sampled by discrete samples (n = 38) or by time-integrated polar or
Authors
David A. Alvarez, Nancy W. Shappell, L.O. Billey, Dietrich S. Bermudez, Vickie S. Wilson, Dana W. Kolpin, Stephanie D. Perkins, Nicola Evans, William T. Foreman, James L. Gray, J.M. Shipitalo, Michael T. Meyer
Bottom sediment as a source of organic contaminants in Lake Mead, Nevada, USA
Treated wastewater effluent from Las Vegas, Nevada and surrounding communities' flow through Las Vegas Wash (LVW) into the Lake Mead National Recreational Area at Las Vegas Bay (LVB). Lake sediment is a likely sink for many hydrophobic synthetic organic compounds (SOCs); however, partitioning between the sediment and the overlying water could result in the sediment acting as a secondary contaminan
Authors
David A. Alvarez, Michael R. Rosen, Stephanie D. Perkins, Walter L. Cranor, Vickie L. Schroeder, Tammy L. Jones-Lepp
Evaluation of passive samplers for long-term monitoring of organic compounds in the untreated drinking water supply for the city of Eugene, Oregon, September–October 2007
Two types of passive samplers, polar organic chemical integrative samplers (POCIS) and semipermeable membrane devices (SPMDs), were deployed at three sites in the McKenzie River basin during September-October 2007. The McKenzie River is the source of drinking water for the city of Eugene, Oregon, and the work presented here was designed to evaluate the use of POCIS and SMPDs as part of a long-term
Authors
Kathleen A. McCarthy, David A. Alvarez, Chauncey W. Anderson, Walter L. Cranor, Stephanie D. Perkins, Vickie Schroeder
Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants
The seasonal occurrence of organic contaminants, many of which are potential endocrine disruptors, entering the Potomac River, USA, watershed was investigated using a two-pronged approach during the fall of 2005 and spring of 2006. Passive samplers (semipermeable membrane device and polar organic chemical integrative sampler [POCIS]) were deployed in tandem at sites above and below wastewater trea
Authors
D.A. Alvarez, W.L. Cranor, S.D. Perkins, V.L. Schroeder, L. R. Iwanowicz, R.C. Clark, C.P. Guy, A.E. Pinkney, V. S. Blazer, J.E. Mullican
Reconnaissance of persistent and emerging contaminants in the Shenandoah and James River Basins, Virginia, during Spring of 2007
Fish exhibiting external lesions, incidences of intersex, and death have recently been observed in the Shenandoah and James River Basins. These basins are characterized by widespread agriculture (intensive in some areas), several major industrial discharges, numerous sewage treatment plant discharges, and urban, transportation, and residential growth that has increased rapidly in recent years. Nin
Authors
David A. Alvarez, Walter Cranor, Stephanie D. Perkins, Vickie Schroeder, Stephen Werner, Edward Furlong, Donald Kain, Robert Brent
Investigation of organic chemicals potentially responsible for mortality and intersex in fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007
Declining fish health, fish exhibiting external lesions, incidences of intersex, and death, have been observed recently within the Potomac River basin. The basin receives surface runoff and direct inputs from agricultural, industrial, and other human activities. Two locations on the North Fork of the Shenandoah River were selected for study in an attempt to identify chemicals that may have contrib
Authors
David A. Alvarez, Walter L. Cranor, Stephanie D. Perkins, Vickie L. Schroeder, Stephen Werner, Edward T. Furlong, John Holmes
Chemical and toxicologic assessment of organic contaminants in surface water using passive samplers
Passive sampling methodologies were used to conduct a chemical and toxicologic assessment of organic contaminants in the surface waters of three geographically distinct agricultural watersheds. A selection of current-use agrochemicals and persistent organic pollutants, including polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and organochlorine pesticides, were targeted using the pola
Authors
D.A. Alvarez, W.L. Cranor, S.D. Perkins, R.C. Clark, S.B. Smith