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

Affiliated Researchers provided its groundwater mapping services to effectively support ongoing investigations of polyfluoroalkyl substances (PFAS) associated with a former military base.

Affiliated Researchers successfully utilized its high-resolution sub-bottom profiler (SBP) system to penetrate the clay, sand, and gravel substrates beneath an inland lake adjacent the former base and map the lake bed stratigraphy.  This service helped determine the sub-terrain conveyance of the PFAS contaminated groundwater.  The SBP system was capable of penetrating the clay, gravel, sand substrates to a depth of greater than 100’, and provide accurate imagery to define the stratigraphy at a resolution of 3”.  The collected data were 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 used to compile the data into accurate CAD drawings, for assessment of the various substrates and sediment layers, and help decipher the groundwater conveyance.  Affiliated Researchers utilizes accurate 3-D graphics to allow further user-controlled analysis.

Affiliated Researchers experience with shallow-water SBP spans more than a decade of real-world applications with several different types of SBP systems, at numerous projects, under various site conditions throughout the United States.

To provide additional support toward the PFAS investigations at the former military base, Affiliated Researchers conducted accurate mapping of groundwater upwelling at the adjacent inland lake and the adjacent river, to further understand the conveyance of the contaminated groundwater.

While navigating its shallow-water survey vessel along designated transects within the lake and river environments, Affiliated Researchers utilized 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 lake and river beds in order to collect data corresponding to groundwater seeps.  Tens-of-thousands sets of temperature data are collected at a rate of 1 per second during the mapping of the lake and river environments.

An accurate mapping of the groundwater upwelling seeps 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 significantly aided in the understanding of the groundwater conveyance from the former base to the adjacent environments.

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.