Item talk:Q226859

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Project",
 "url": "https://www.usgs.gov/centers/sawsc/science/pilot-scale-phytoremediation-pesticide-contaminated-groundwater-near-columbia",
 "headline": "Pilot-scale phytoremediation of pesticide-contaminated groundwater near Columbia, SC airport (CAE)",
 "datePublished": "March 18, 2024",
 "author": [
   {
     "@type": "Person",
     "name": "James Landmeyer",
     "url": "https://www.usgs.gov/staff-profiles/james-landmeyer",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-5640-3816"
     }
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "U.S Geological Survey (USGS) reviewed this historical groundwater-quality data collected at the site since 1996 and determined that an increased loss of pesticides (higher attenuation) occurred near the tributary compared to slower losses near the source areas in the old landfill. For example, the loss of total pesticides was 22 times greater in groundwater in the tributary floodplain relative to pesticide concentrations in groundwater leaving the source area. Similarly, the loss of other pesticides, such as \u03b2-BHC and toxaphene, were 48 and 8 times greater, respectively, near the tributary."
   },
   {
     "@type": "TextObject",
     "text": "Reference Cited"
   },
   {
     "@type": "TextObject",
     "text": "It was hypothesized that the observed faster rate of pesticide mass loss could be attributed to the use of groundwater by trees growing in the riparian zone where the water table is closer to land surface. Since then, the plans are to increase the rate of pesticide removal from groundwater by uptake though trees. This will be accomplished by planting a pilot-scale plot of fast, growing hybrid poplar trees that have more extensive root systems and are more capable of removing these contaminants from groundwater."
   },
   {
     "@type": "TextObject",
     "text": "Landmeyer, J.E., 2011, Introduction to Phytoremediation of Contaminated Groundwater. Springer. 415 p. ISBN 978-94-007-1956-9."
   },
   {
     "@type": "TextObject",
     "text": "Project Schedule"
   },
   {
     "@type": "TextObject",
     "text": "An old landfill is located east of South Carolina Highway 302 in West Columbia, Lexington County, South Carolina and adjacent to an unnamed tributary to Sixmile Creek, a tributary to the Congaree River. Historical sampling activities at the landfill include groundwater from monitoring wells, surface water in the tributary, and porewater from the bed sediments (hyporheic zone) of the tributary. This sampling indicated the presence of organochlorine pesticides (\u201cpesticides\u201d) in groundwater, surface water, and porewater."
   },
   {
     "@type": "TextObject",
     "text": "The pilot-scale system will comprise of about 200 hybrid poplar trees, which have been specially designed to take up groundwater and dissolved contaminants such as organochlorine pesticides (Landmeyer, 2011). The phytoremediation system is envisioned to be roughly 50- by 100-ft and will be installed in the spring of 2024, after existing scrub trees and vines in the selected area are grubbed and removed. Over at least a 2-year period, the performance of the pilot-scale trees will be evaluated using a monitoring system comprised of point surface-water flow measurements; collection and analyses of groundwater from existing monitoring wells by the existing site consultant; collection and analyses of pore-water samples and analyzed for twenty-one pesticides using EPA Method 8081A by the existing site consultant; and, collection and analyses of passive samplers installed in the pilot-scale trees, by the USGS."
   },
   {
     "@type": "TextObject",
     "text": "The hydrogeology and geomorphic characteristics of the site favors the success of a riparian zone phytoremediation system over other remedial technologies, because the riparian zone is characterized by:"
   },
   {
     "@type": "TextObject",
     "text": "Goals"
   },
   {
     "@type": "TextObject",
     "text": "The goals of the pilot-scale phytoremediation system are to provide data to evaluate the extent that the trees will:"
   },
   {
     "@type": "TextObject",
     "text": "A pilot-scale phytoremediation system is being implemented to address shallow groundwater contaminated by residual pesticides from a landfill near West Columbia, South Carolina. The pilot-scale phytoremediation system will test the idea that fast growing hybrid poplar trees will take up shallow groundwater that contains organochlorine pesticides, such as \u03b2-BHC compounds and toxaphene, at higher rates than native trees. The goal is to keep the contaminants from moving away from the landfill."
   },
   {
     "@type": "TextObject",
     "text": "Background"
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "South Atlantic Water Science Center (SAWSC)",
   "url": "https://www.usgs.gov/centers/sawsc"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "phytoremediation"
   },
   {
     "@type": "Thing",
     "name": "Science Technology"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "Water Quality"
   },
   {
     "@type": "Thing",
     "name": "Groundwater and Streamflow Monitoring"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "Environmental Monitoring"
   },
   {
     "@type": "Thing",
     "name": "Groundwater Contamination"
   },
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   }
 ]

}