Over the past several years, environmental professionals have sought new and innovative field techniques to allow on‐site plume delineation and in‐field location of monitoring wells. One technique adopted for site characterization is the multilevel drive point sampler (MLDPS). This technology allows sampling of soil gas and groundwater and measurement of aquifer permeability. MLDPSs offer a cost‐effective solution to the high cost of plume delineation by providing in‐field data for decisions on monitoring well location and depth. MLDPS technologies can increase the effectiveness of monitoring well installation programs, decrease the cost of site characterization, and accelerate the time between initial site assessment and implementation of a remediation program. MLDPS technologies offer distinct advantages over other field techniques, and a cost comparison is offered. A case study describing application of the MLDPS to the delineation of a TCE‐contaminated plume is described.
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