The Bethpage Plume is a significant groundwater contamination plume located in Nassau County, Long Island, New York. Its primary source is historical industrial activity, primarily from the former Grumman Aerospace Corporation and the United States Navy facilities located in Bethpage. The plume stretches several miles south from its origin, impacting numerous communities and posing a potential threat to drinking water sources.
Understanding the geographic extent of the Bethpage Plume is crucial for effective remediation and protection of public health. The “Map of Bethpage Plume” generally refers to visual representations depicting the estimated boundaries and contaminant concentrations within the affected groundwater. These maps are developed and updated by environmental agencies, primarily the New York State Department of Environmental Conservation (NYSDEC), based on extensive groundwater sampling and modeling.
Key features represented on a Bethpage Plume map include:
- Plume Boundaries: The map delineates the estimated outer limits of the contaminated groundwater. This boundary is often defined by the concentration of specific contaminants exceeding established maximum contaminant levels (MCLs) set by regulatory agencies.
- Contaminant Concentrations: The map typically uses color-coding or contour lines to illustrate the varying concentrations of different contaminants within the plume. Higher concentrations are usually found closer to the source area in Bethpage, gradually decreasing as the plume migrates southward.
- Contaminants of Concern: The primary contaminants of concern in the Bethpage Plume are volatile organic compounds (VOCs), specifically trichloroethylene (TCE) and tetrachloroethylene (PCE). These chemicals were historically used as degreasers and solvents in industrial processes. Other VOCs, such as dichloroethane (DCA) and vinyl chloride, may also be present. The map may specify the location and concentration of each contaminant.
- Monitoring Wells: The locations of monitoring wells used to collect groundwater samples are often marked on the map. These wells provide valuable data for tracking the plume’s movement, contaminant concentrations, and the effectiveness of remediation efforts.
- Drinking Water Sources: The map may show the locations of public and private drinking water wells in relation to the plume. This information is crucial for assessing potential risks to drinking water supplies and for implementing appropriate treatment or alternative water source strategies.
- Remediation Systems: The locations of operating remediation systems, such as pump-and-treat facilities and in-situ treatment zones, are often indicated on the map. These systems are designed to remove contaminants from the groundwater and prevent further plume migration.
The Bethpage Plume map is a dynamic tool that evolves as new data becomes available. The NYSDEC regularly updates the map based on ongoing groundwater monitoring and the progress of remediation efforts. The map is essential for stakeholders, including residents, businesses, government agencies, and environmental organizations, to understand the extent of the contamination, assess potential risks, and participate in the decision-making process regarding remediation strategies. Accessing the most current version of the Bethpage Plume map from the NYSDEC website is crucial for accurate and up-to-date information.
