remediation site characterization Articles
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Presumptive Remedies
A presumptive remedy is a technology that EPA believes, based upon its past experience, generally will be the most appropriate remedy for a specified type of site. EPA is establishing presumptive remedies to accelerate site-specific analysis of remedies by focusing the feasibility study efforts. EPA expects that a presumptive remedy, when available, will be used for all CERCLA sites except under ...
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Green remediation best management practices: pump and treat technologies
Overview Pump and treat (P&T) technology typically is selected in a cleanup remedy to hydraulically contain contamination and/or restore an aquifer to beneficial use. Opportunities to reduce the energy and environmental footprint of a P&T remedy, which are available during site characterization and the remedy selection, design, construction, and operation phases, rely on effective planning and ...
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Bioremediation of 1,2-dichloroethane with INTEROX® case study
At a chemica plant in a harbour area, the surface aquifer was contaminated with 1,2-dichoroethane (1,2-DCEa) which had to be remediated. Site characterisation, and laboratory tests demonstrated that oxygen was the limiting factor for the insitu biodegradation of 1,2-DCEa. The remedial strategy was based on flushing with simuftaneous aerobic biodegradation enhancement. Biodegradation was ...
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The Discrete Fracture Network (DFN) approach for contaminated bedrock site characterization
A comprehensive methodology known as the Discrete Fracture Network (DFN) Approach has been developed since the mid-1990’s as a framework for characterization of contaminated sites on fractured rock. This article provides an overview of the Approach and is followed by eight additional articles that describe the various methods that constitute this Approach. The ninth article also describes ...
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Characterization, Remediation and Management in Kansas of Total Petroleum Hydrocarbons (TPH) and Light Non-Aqueous Phase Liquid (LNAPL)
The Kansas policy on TPH and LNAPL provide guidelines observed in implementing initiatives to address petroleum contaminated sites. Such initiatives include characterizing, remediating, and managing the release of petroleum into the environment. The policy was developed to be used in place of the Kansas Department of Health and Environment (KDHE) Bureau of Environmental Remediation (BER) Policy. ...
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Marshall Iron and Metal BOS 200+ - Case Study
Marshall Iron & Metal in the City of Marshall, Michigan, operated as a railroad maintenance yard from 1899 to 1931 and a foundry from 1938 to 1960. Most recently, it served as an auto salvage/metal scrapyard from 1961 to 1996. Excavation and disposal of soil and debris were completed in the fall of 2015. During these activities, light non-aqueous phase liquid (LNAPL) was observed in an ...
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Real Estate Development: Southern California Campus at Former Aerospace Manufacturing Facility - Case Study
In 2015, Intrinsyx was retained by a Fortune 100 client with a campus being developed (late 2018 opening) at a highly contaminated former aerospace manufacturing facility. We worked with the client’s Environmental Health & Safety team, their architectural firm, their landscaping firm, as well as state and federal regulators. We developed a tailored planting scheme for their campus using ...
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Brownfield Site Phytoremediation for Oil Company - Case Study
The site was a petroleum tank farm from the early half of the 20th century. Contaminants on-site include petroleum hydrocarbons, benzene and ethylbenzene, and PAHs naphthalene and 2-methylnapthalene. Most contaminants are in subsurface and groundwater, with the exception of PAHs that extend from the surface to ...
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MEW Superfund Site: TCE Groundwater Plume - Case Study
Working with NASA-Ames Environmental Remediation Group and the EPA, this site was our first field deployment of Endophyte Assisted Phytoremediation, at one of the region’s largest Superfund sites with TCE groundwater contamination. Intrinsyx planted 300 hybrid poplar trees as 12-inch cuttings. Within a year, the benefits of using our PDN3 bacterial endophyte to inoculate trees were visible, ...
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