Environmental Remediation Services
ESI provides innovative and cost-effective services to remediate contaminated sites. The staff is experienced in the design and implementation of a wide range of remedial options for soil and groundwater contamination from both organic and inorganic compounds.
Remedial options selected by ESI meet several criteria:
· Remediation must be justified based on a thorough understanding of a site’s environmental conditions, an assessment of risk to human health and the environment, and a reasonable determination of future usage.
· Remediation must be determined to be the most cost-effective approach to the resolution of on-site environmental conditions.
· Remediation must have specific objectives that are measurable and remedial progress must be capable of being accurately documented so that site closure can be achieved.
ESI has successfully managed remedial projects addressing both organic (e.g., petroleum hydrocarbons (PCBs)) and inorganic (e.g., heavy metals) compounds, utilizing innovative remedial strategies (e.g., soil venting systems, bio-remediation), designed, and implemented for the specific characteristics and constraints of each site. Examples of Site Remediation projects include:
· Concurrent remediation of hydrocarbon contaminated soil and groundwater at a former gas station in Brooklyn, New York. Bioremediation was utilized as the primary remedial action, while strategically placed extraction wells and modified air stripping resulted in containing the plume of contaminated groundwater and methodically removing hydrocarbons. Acceptable soil and groundwater levels were achieved within eight months of completing this remediation.
· Investigation and remediation of a former major oil storage facility (MOSF) in Dutchess County, New York. Investigation documented the presence of both soil and groundwater contamination, as well as the presence of remaining underground storage tanks (USTs). A Workplan was prepared and approved by the NYSDEC. Remediation involved the use of on-site asphalt batching to transform the contaminated soil into asphalt to be used for biking trails on the site. Portable asphalt batching was proposed by ESI as the preferred alternative because of the Client’s projected need for asphalt on the site, the suitability of the soils for asphalt manufacture (i.e., the soils contained a significant percentage of ash and other fine inorganics and was contaminated with a heavy grade of petroleum), and the relatively lengthy site development timetable. Bioremediation was not considered because of the occasional salt intrusion into the Site, which would increase subgrade soil chloride levels.
· Design, installation and operation of a soil vapor extraction system augmented with activated carbon stripping to effectively remove an estimated 90% of perchlorethylene (PCE) in shallow soils at a former dry cleaner. Aggressive remedial actions resulted in site clean up within six months of initiating vapor extraction, successfully eliminating the site from possible inclusion as a State Superfund site.