What is 'pump-and-treat' remediation and what is its primary limitation?
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A
Extracting contaminated groundwater for surface treatment; limited by slow contaminant desorption and NAPL source persistence
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B
Injecting treatment oxidants and pumping out reaction products; limited by high chemical reagent costs
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C
Pumping clean water into an aquifer to dilute contamination; limited by available fresh water supply
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D
Excavating and thermally treating saturated soil; limited by deep excavation equipment costs