PFAS related Sampling and Mapping

Specializing in environmental mapping, reporting and technology, Affiliated Researchers utilizes advanced geophysical instruments, thermographic sensors, and advanced software to provide polyfluoroalkyl substance (PFAS) related mapping within lakes, harbors, rivers, canals, estuaries, and marine environments.

Affiliated Researchers successfully utilizes its high-resolution sub-bottom profiler (SBP) system to penetrate the clay, sand, and gravel substrates beneath a body of water to map the lake bed stratigraphy.  This service can help determine the sub-terrain conveyance of the PFAS contaminated groundwater.  The SBP system is capable of penetrating the clay, gravel, sand substrates to a depth of greater than 100’, and provide accurate imagery to define the stratigraphy.  The collected data are then compiled to develop a digital terrain model (DTM) of the stratigraphy layers and provide a mapping of potential channels of groundwater conveyance.

Advanced geophysical software is then used to compile the data into accurate CAD drawings, to allow for the assessment of the various substrates and sediment layers, and help decipher the groundwater conveyance.

Where applicable, Affiliated Researchers utilizes highly-sensitive sensors and advanced software to integrate GPS positioning to a continuous data-string of in situ water temperatures.  The sensor is deployed at depths close to the aquatic / marine bed in order to collect data corresponding to groundwater seeps.  Tens-of-thousands of temperature-GPS data sets are collected at a rate of 1 per second during the mapping of the environment.

These data are developed by Affiliated Researchers to enable the accurate measurement, delineation, and mapping of groundwater upwelling seeps within aquatic and marine areas of concern.  The groundwater mapping has significantly aided in the understanding of the groundwater conveyance of PFAS.

Affiliated Researchers has also been involved in a number of projects requiring vibracore sediment sampling.  The sediments often neccessary to evaluate grain size distribution and document the type of deposition environments where PFAS may be present.  Due to project association with the occurrence of PFAS, special handling and sampling requirements were incorporated into procedures in accordance with established protocols to avoid cross contamination.

Geo-referenced backgrounds can also be added to the data to further visualize the deliverable. GeoTIFF, JPEG, PDF, CAD, or GIS formats also enable convenient data sharing.