P&S utilizes vibratory drilling to obtain virtually undisturbed four feet long by 2.25" diameter soil cores with high rates of recovery. Samples are collected in transparent liners allowing for either viewing or immediate samples of the cores. Continuous or discrete sampling can be performed depending on the client's needs. P&S's equipment is high strength and powerful enabling performance in dense soils. Coupled with P&S's mobile laboratory, immediate analysis can be performed which aids in guiding the site program.