Water quality_2

Water quality_2 - Groundwater Contamination Residence time...

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Groundwater Contamination Residence time of groundwater usually much longer than for surface waters Often difficult to detect groundwater contamination Difficult to clean-up (remediate) contaminated aquifers Plume -- elongate pattern of contamination from point source Groundwater Contamination on Long Island Toxic metals – primarily from industrial activities Nitrates – wastewater (septic system recharge), fertilizers Pesticides – primarily from agriculture, horticulture Organic chemicals – household wastes, industrial sources Petroleum (gasoline) spills – single-shell underground tanks
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Landfilling started at this site in 1947 Point source contamination into Upper Glacial Aquifer Leachate (chloride shows distribution) Plume – elongated pattern of contaminant dispersal Plume is 3500 m in length Leakage duration 33 years 3500m/33yr = 106 m/yr Rate of contaminant movement Babylon Landfill
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Heavy metal contamination at electroplating plant in South Farmingdale Between 1940-1960, cadmium and chromium-containing water was discharged into recharge basins
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Recharge basins (point source) Massapequa Creek Plume
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Chromium Cr(VI) Cadmium Cross-sections of Contaminant Plume Source Flow
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Non-point source Brookhaven Nat’l Lab Babylon landfill E. Northport landfill
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E. Northport Landfill (point source) Plume Region expected to become contaminated Private wells N
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This note was uploaded on 05/13/2011 for the course GEO 101 taught by Professor Hanson during the Spring '08 term at SUNY Stony Brook.

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Water quality_2 - Groundwater Contamination Residence time...

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