Profile: Pine & Swallow Associates deals with testing of groundwater, soil, soil gas and sediment applications. Our testing strategy includes Microwell® technology, vertical profiling, soil gas analysis and on-site mobile lab services. Our services include soil sampling, water body/marine services, vertical profiling and 3D analysis. Our microwell and vibradrill technology can provide sequential sampling of ground water, soil gas or permeability. Since the well is a single intact unit it can be advanced further into the ground in short intervals after a sample has been taken. Vertical profiling allows measurement of contaminant levels, head elevations and permeability as they vary with depth in a well. A correlation between permeability and ground water quality can be established enabling delineation of the contaminant plume.