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Sources of Groundwater Contamination

Sources of Groundwater Contamination. Designed discharges On-site wastewater disposal Injection wells Land application Storage, treatment and disposal

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Sources of Groundwater Contamination

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  1. Sources of Groundwater Contamination Designed discharges On-site wastewater disposalInjection wellsLand application Storage, treatment and disposal **LandfillOpen dumpsResidential disposalSurface impoundmentsWaste tailingsWaste pilesMaterial stockpilesGraveyardsAnimal burialAboveground storage tanks*Underground storage tanksContainersOpen burning and detonationRadioactive disposal Transport and transmission PipelinesMaterials transport Activities with incidental releases IrrigationPesticide applicationFertilizer applicationAnimal feeding operationsDe-icing salt applicationUrban runoffAtmospheric deposition*Mining and mine drainage Activities altering flow patterns Oil and gas production wellsOther wellsExcavation Natural sources Surface-water interaction**Natural leachingSalt-water intrusion

  2. Mine Tailings/AMD

  3. Vineland Chemical

  4. Leaking Underground Storage Tanks Source: U.S. Environmental Protection Agency, August 7, 2002. Office of Underground Storage Tanks (OUST). U.S. Environmental Protection Agency. Washington D.C. www.epa.gov/swerust1/graphics/ miscpix1.htm. Accessed January 28, 2003.

  5. Oxidation and Reduction Capacities From Christensen et al, Applied Geochemistry 16(2001).

  6. Vertical Figures

  7. 2 Regions at Winthrop Landfill

  8. 2 Regions at Winthrop Landfill

  9. As in Bangladesh Exceedance of Arsenic Concentration Thresholds The animated maps that follow show the probability of arsenic exceeding various concentration thresholds in wells of any depth. The maps automatically progress through thresholds of 10, 50, 200 and 400 ppb. Click to continue http://www.es.ucl.ac.uk/research/lag/as/index.htm

  10. Profiles in a Bangladesh Well From Harvey et al, Science 298 pp. 1602-1606.

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