Norton Wood Products - Memphis, Tennessee
In accordance with the Post-Closure Corrective Action Order for this former wood treatment facility in Memphis, Tennessee, a comprehensive Site Assessment Plan to characterize and delineate on-site and off-site soil and ground water contamination was developed.
Following baseline monitoring of 18 monitoring wells located on and off site, monthly monitoring of water levels in three water-bearing zones occurred to determine seasonal variations in ground water flow patterns. Additional work activities focused on aquifer testing (slug-tests) of selected wells within each water-bearing zone, semi-annual ground water sampling of selected wells, and recovery of DNAPL.
Foundry Sands Corrective Action - Hammond, Indiana
Historical use of foundry sands as fill material at a valve manufacturing facility was the focus of a RCRA clean-up in Hammond, Indiana. The investigation and clean-up activities were conducted under the oversight of Indiana Department of Environmental Management (IDEM). Following the approval and implementation of several work plans for the determination of the extent of contamination, soil removal activities were begun. In conducting soil removal activities, a pre-approved verification sampling plan was implemented and, upon completion of backfill activities, additional ground water monitoring wells were installed at the site. These wells were monitored for a period of five years prior to abandonment to verify unchanged conditions at the site following remediation. The site has since been designated as a closed file by IDEM.
Universal Manufacturing - Paterson, New Jersey
This project involved the investigation and remediation of ground water contaminated with trichloroethene (TCE) and di-ethytl-hexyl phthalate (DEHP) resulting from the manufacture, repair, and distribution of light ballasts containing polychlorinated biphenyls (PCB) and DEHP. The work was conducted under the oversight of the New Jersey Department of Environmental Protection (NJDEP) as a result of a real estate transfer. Following sampling and investigation activities, a pilot remedial demonstration was conducted utilizing two recovery wells and a surficial aquifer interceptor trench for the discharge of treated ground water following extraction. The design of the project was complex in that ex-filtration from an antiquated combined (sanitary and storm) sewer system serving the area was affecting the recovery of contaminated ground water. Ultimately, this artifact of the project allowed for early closure of the project due to the finding of additional responsible parties that contributed contaminants to the failed sewer system.
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