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Environmental Remediation Services
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ESI has extensive experience in providing innovative and cost-effective services to remediate contaminated sites. The staff are 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:
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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.
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Remediation must be determined to be the most cost-effective approach to the resolution of on-site environmental conditions.
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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.
Risk Assessments
An integral component of proper site restoration is an assessment of risks associated with known environmental conditions. ESI performs the following risk assessments to achieve initial determination of the need for remedial actions, as well as to set appropriate site-specific clean-up levels:
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Assessment of heavy metal-contaminated site, documenting stability of the elements within the soil column and the localization (both lateral and vertical) of contaminated soil. Secured state agency approvals to leave soils on-site with no active remedial actions. Prepared monitoring plan and materials management plans for future handling of metal-containing wastes.
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Assessment of hydrocarbon-contaminated site in Irvington, New Jersey, documenting the absence of down-gradient receptors, the presence of soil and groundwater conditions that would accelerate natural attenuation, and the lack of significant off-site contaminant migration. Analyses conducted by the office were instrumental in justifying no further action and regulatory agency file closure.
Site Remediation
ESI supervises remedial activities for properties where contaminant concentrations have been determined to represent a threat to public health and/or the environment. 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.
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Concurrent remediation of hydrocarbon contaminated soil and groundwater at a former gas station in Brooklyn, New York. Bio-remediation 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 implementing remediation.
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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. Due to the occasional salt intrusion into the Site, thereby increasing subgrade soil chloride levels, bioremediation was not considered.
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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.
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Combined soil removal and on-site treatment (i.e., vapor extraction) for electronics manufacturing facility known to be contaminated with PCBs, heavy metals and petroleum hydrocarbons in Queens, New York. Proper documentation of minimal risks was instrumental in securing state agency approvals of site remediation plans.
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Vertical and lateral delineation of lead-contaminated soil on an urban property proposed for a park in Ulster County, New York. Designed site remediation plan and secured approvals from state and local health agencies.
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Remediation of former metal processing facility. Identified areas requiring remediation and coordinated the removal of chemical (acids) bulk storage tanks and piping networks, the disposal of accumulated wastewater, and the closure of waste neutralization pits. Work was conducted in conjunction with site-re-development.
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Remediation of former dry cleaner in Manhattan, utilizing SVE technology. Remediation of site was integrated with site re-development. Ongoing monitoring of PCE removal.
Tank Closure Assessments
ESI adheres to strict quality control standards in the provision of underground storage tank closure and remediation services and maintains necessary licenses and certifications.
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Proper in-place closure of two 20,000-gallon abandoned tanks at a major medical facility, situated where removal would have threatened the structural stability of the emergency room and a liquid oxygen tank. Report documented the presence of low levels of hydrocarbons in soil that were permitted to remain on-site based on a preliminary risk-based assessment.
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Closure of three 15,000-gallon tanks at an institutional facility adjacent to a New York City reservoir. Groundwater analyses and soil studies documented the immobility of previously identified hydrocarbons in the soil. State and local environmental agency approvals were secured.
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Closure of six fuel oil tanks at a shopping complex in New Jersey, including documentation of subsurface soil and groundwater contamination. Services required both in-place tank closure and tank removal.
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