Groundwater Pollution

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Presentation transcript:

Groundwater Pollution

Groundwater Pollution Non-point Sources Pesticides Fertilizers Petroleum products (oil, gasoline from roads) Point Sources Underground Storage Tanks (USTs)- gas stations, oil tanks, factories Septic Tanks from homes Unlined Landfills Wastewater or Manure Lagoons

Industrial wastewater lagoon Manure Lagoon Underground Storage Tank (UST) Industrial wastewater lagoon

Septic Tanks www.suffolkva.us

Plume- a continuous emission from a point source that has a starting point and observable pathway earthsci.org

Cleaning Groundwater Pollution Extremely difficult problem to solve: Aquifers are difficult to access, unlike surface water Recharge and flow rates are very slow Soil and Rock can “cling” to pollutants for many years

Remediation- the process of cleaning up pollution In situ remediation- cleans up contaminated soils and groundwater without removing any materials; minimal disturbance Ex situ remediation- removes contaminated material from the site to be either: Dumped in a secure, off-site location (ex: landfill) Cleaned and then replaced in original location

Groundwater Contamination Lab Arsenic Investigation Lab objective: Determine the source of Arsenic using well data from a community Complete Part 1, then pick up Part 2 up front