EST’s experienced field chemists routinely collect groundwater samples from hundreds of public and private sites annually, including municipal landfills, industrial properties, and retail petroleum locations throughout the Northeast. EST has extensive experience with the collection of groundwater samples in accordance with the US EPA’s Low Flow Purging and Sampling Procedures. In order to provide the most reliable services available, EST maintains an extensive inventory of groundwater sampling equipment, including a variety of bladder pumps, flow-through cells, and multi-parameter sensors. Our equipment is routinely calibrated to ensure the highest standards of accuracy and reliability.
The primary purpose of low flow sampling is to purge and sample wells at rates comparable to ambient groundwater flow so that drawdown of the water level is minimized and mixing of stagnant water within the well casing is reduced.