Affiliated Researchers collected sediment samples using vibracore sediment coring and ponar surface grab sampling methods at a USEPA Superfund Site in Illinois. The sediment samples were needed to help determine the extent of contamination, as a necessary aspect of an environmental restoration program at this site.
Affiliated Researchers utilized its 20’ pontoon vibracore vessel, RTK-GPS survey equipment, and a Rossfelder P3 vibracore system to collect sediment cores from the lake bed. In locations where there was not enough recoverable surface sediment using vibracore techniques, a 6-inch petite Ponar sampler was deployed to collect surface samples for chemical analysis.
Affiliated Researchers utilized its RTK-GPS survey equipment to establish lakebed elevations, and sediment poling techniques to determine the sediment thickness at each sampling location.
Affiliated Researchers utilized its RTK-GPS survey equipment and OPUS methods to establish two, USGS verified benchmarks at the project location. Affiliated Researchers setup a RTK-GPS “base station” at one of the benchmarks to transmit accurate, real-time GPS corrections to its RTK-GPS survey equipment onboard the vibracore vessel. An accurate measurement (0.1’) of the lakebed elevation was recorded at each sampling location to help determine the vertical extent of contamination to be determined.