Environmental Investigation Services

Whether it is a simple site assessment or a complex RCRA facility investigation, most environmental investigation projects begin with determining the extent and type of contamination through a combination of exploratory actions such as review of regulatory records and aerial photography, site visits and in-depth interviews of past and present property owners, and sampling and collection of other site-specific data.

A well-planned investigation saves costs by reducing regulatory review, and efficient sampling maximizes the information available for analysis and interpretation. SES is an experienced provider of multi-media sampling services to help define problem areas and determine the type and severity of contamination.

Featured Projects

SITE INVESTIGATION OF A SMALL ARMS RANGE BERM AREA – Fort Stewart, Georgia
In preparation for major construction on the site of a former small arms firing range, SES delineated the extent of contamination by sampling soil, sediment, groundwater and surface water. Elevated levels of lead were found in multiple media. Findings from the investigation indicated the need for further delineation beyond the known extent of the berm encompassing a larger portion of the range fan and modifications to this project expanded it to over seven times its original contract value. Approximately 1,050 tons of contaminated soil were removed from the site.

RCRA FACILITY INVESTIGATION (RFI) AT SWMU 39 – Fort Stewart, Georgia
Based on previous investigations to determine the extent of TCE contamination at SWMU 39 on Fort Stewart, SES performed an RFI at the site. This provided information for an ecological risk assessment. The investigation also included a revision of a human health risk assessment. SES recommended further action to remove free product by excavating an area around the well where the free product was present, replacing it with a larger diameter well, and continued monitoring of groundwater at the site.

RCRA FACILITY INVESTIGATION (RFI) AT FORMER SKEET RANGE – Fort Gordon, Georgia
SES delineated soil contamination at the site of a former skeet range in Fort Gordon, Georgia, and prepared an RFI report. This included the delineation of PAH and metal contamination in soil and groundwater, obtained through samples collected from 39 soil borings installed up to 25 feet below ground surface, and from six groundwater monitoring wells. The results of this investigation were used for a baseline human health risk assessment from which SES recommended that soils be removed to five feet to remove all clay pigeons and PAH contaminated soils in the vicinity.