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P&S conducted sequential pneumatic permeability testing at a US EPA site in New Hampshire in order to define changes in transmissivity and to determine if a relationship existed between permeability and water quality data. A single MicroWell was driven to increasing depths and sequentially sampled. At each interval a pneumatic testing device was used to lower the water level. A pressure transducer then measured water level changes in a rising head permeability test. This approach, using a data logger and computer analysis, generated extensive data rapidly using minimal materials and at a fraction of the cost of other methods.