KEMRON was tasked by the USEPA to respond to a contaminated site in Memphis, TN. The Former Custom Cleaners (FCC) site operated as a laundry or dry cleaner from approximately 1950 until the mid-1990s. In 2013, the Tennessee Department of Environment and Conservation (TDEC) conducted investigation activities that indicated tetrachloroethylene, also known as perchloroethylene (PCE), was used during Custom Cleaners tenure at the site. In March 2015, the EPA supported TDEC Site Inspection (SI) sampling activities at the FCC site that included the collection of subsurface soil samples, soil gas samples, and groundwater samples. Analytical results for samples collected during the Site Investigation indicated the presence of a PCE source.
KEMRON demolished the existing building to allow access to the contaminated soil beneath the structure and surrounding pavement. KEMRON demolished the structure and all concrete paving in the area resulting in 23 truckloads of debris taken to a local subtitle D Landfill for disposal. KEMRON then excavated PCE contaminated soil and staged the material on site in 500 yard piles.
The Applied Technology Group of KEMRON Environmental Services, Inc. (KEMRON) conducted a dewatering laboratory bench scale study on impacted sediment from a river site located in the Boston, Massachusetts area. The purpose of the dewatering study was to evaluate dewatering techniques in order to increase the material percent solids and density for potential disposal. Four site sediments were evaluated during the bench scale study. The sediments showed a variation in particle size distribution from coarse sand to silt and was impacted with Hexavalent Chromium. KEMRON evaluated the effectiveness on the site materials for three different dewatering techniques including Recessed Plate Simulations through the use of Baroid filter press testing, Belt Filter dewatering using a Crown® Belt Filter Press, and GeoTube® dewatering through the use of the GeoTube® Rapid Dewatering Technique (RDT). The study included polymer evaluations as well as evaluating the dewatering technology on the “as received” material and material screened through a #200 sieve (de-sanded).
Through our Worldwide Environmental Remediation Services (WERS) contract with USACE-Huntsville, KEMRON was contracted by USACE-Alaska to perform excavation, packaging, transportation and disposal of approximately 33,000 tons of PCB-contaminated soil from the White Alice Radio Relay Station (RRS) in Port Heiden, AK. The work was performed for the benefit of US Air Force, who is responsible for the environmental cleanup of the White Alice RRS. Alaska Department of Environmental Conservation (ADEC) provided regulatory oversight of the work of the CERCLA non-time critical removal action.
Since work at the remote area of Alaska is performed only during the warm summer months of May through September, KEMRON and Jacobs, our team subcontractor, coordinately closely with the native village officials and the local construction subcontractor, Aniakchak Contractors LLC. Close coordination with the community is maintained to ensure adequate housing and meals for field workers and availability of the limited labor pool and heavy equipment at Port Heiden during the limited field season.