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Site Investigation & Remediation
AEI Consultants provides full service environmental site investigation and remediation services to address a variety of pollutant conditions. Site Investigation includes comprehensive examinations, appropriate design and plan installations and feasibility studies to determine the contamination severity and mitigation methods on contaminated sites. AEI’s dedicated engineers develop effective solutions in order to successfully complete thousands of site investigation and remediation projects on schedule.
Our experienced project managers and professional geologists, engineers, and scientists identify cost-effective solutions and develop long-term relationships with our clients to understand their budgetary needs. AEI offers up-to-date knowledge of federal, state and local regulations throughout the United States. Quality control is strictly enforced and all work completed by AEI is documented and performed under the direction of a Professional Engineer or a Professional Geologist. AEI is well-known in the industry for our superior quality of work and client satisfaction.
A Phase II subsurface investigation would generally be recommended if historical documents or a site inspection suggests that soil or groundwater contamination might exist at the subject property following a Phase I Environmental Site Assessment (ESA).
The purpose of the Phase II Subsurface Investigation is to determine if contamination exist. Investigations determine the impact of the contamination on the soil and/or groundwater conditions beneath a property.
Potentially contaminated sites that are recommended for Phase II subsurface investigations commonly involve:
- Dry cleaning operations
- Printing Facilities
- Manufacturing Facilities
- Gas stations
- Underground StorageTanks (USTs)
- Leaking tanks
- Hazardous materials surrounding the subject property
All of AEI’s Phase II Subsurface Investigations are performed by experienced professional geologists who establish the scope of work, determine the location of each sample and interpret sample results. All samples are analyzed by certified laboratories under the guidelines established by the American Society of Testing and Materials (ASTM).
Once the laboratory results have been acquired, a report is prepared which includes the subject property map, analytical laboratory sample results, and conclusions and recommendations for additional work, if required.
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Soil, Groundwater and Soil-Vapor Investigations are performed to evaluate the extent of the identified contamination to soil and/or groundwater beneath a property. Site specific data is integral in evaluating the need for mitigation, human and environmental risks and obtaining regulatory closure.
Extensive soil and water sampling and laboratory analyses may be necessary to determine the extent of the contamination. In many cases installation of monitoring wells are needed for long term groundwater sampling monitoring. AEI’s comprehensive testing and evaluation procedure gives our clients the necessary information to make thoughtful, prudent business decisions regarding site cleanup.
Vapor intrusion and vapor encroachment is encountered primarily at sites contaminated with volatile organic chemicals such as petroleum from leaking underground storage tanks or pipelines and chlorinated solvents from dry-cleaning facilities. Vapor Intrusion studies may involve sampling indoor and ambient air, soil gases, and groundwater. State and federal environmental initiatives have recently addressed vapor intrusion issues and will have significant impacts on future real estate transactions. AEI’s experienced project managers have completed hundreds of vapor intrusion investigation studies at commercial and industrial properties.
AEI performs groundwater quality investigations which involve installing groundwater monitoring wells in order to assess geologic conditions, groundwater flow, pollution fate and transport dynamics. AEI properly designs monitoring programs.
Risk assessments are a means of quantifying risks to human health and the environment. It is often used to develope site-specific clean up standards, thus allowing some contaminants to be left in place. Some of the factors that influence the outcome include: nature of property use (commercial or residential); contaminants of concern; depth to groundwater; and the proximity to sensitive receptors such as schools, water supply wells, and other water bodies. AEI utilizes the most current industry approach to conduct risk assessments to provide accurate interpretations of risk at a specific site.
Remedial Investigations and Feasibility Studies (RI/FS) both follow the preliminary site investigation and are conducted concurrently. The primary purpose of an RI is to determine the nature and the extent of the contamination and to establish whether it poses public health and environmental threats. The primary purpose of the FS is to assess the cost of the necessary treatment and to evaluate cost-effective alternative actions of remediation for the contaminants of concern. These studies allow our clients to make informed decisions and practical approaches regarding site cleanup.
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AEI offers the ability to evaluate a wide range of remedial options based on site specific data and regulatory considerations. AEI engineers design and implement programs that result in significant reductions of remediation costs for our clients. Our remediation capabilities include regulatory support, remedial investigation, risk assessment, remediation engineering, field operation and management, and innovative technology.
Our services include:
- In-Situ and Ex-Situ Bioremediation
- Soil Vapor Extraction / Bioventing
- Chemical Oxidation
- Product Recovery
- Stabilization
- Groundwater Extraction Treatment
- Engineering Controls(venting, vapor barriers, reactive barriers, etc)
- Soil Excavation
Design of a Corrective Action or Remedial Action Plan (RAP) for a site, incorporates all assessment data and prior experience in remedial investigations and feasibility tests. The RAP contains risk based cleanup levels negotiated with the regulator, and contains all of the information necessary to construct and operate the remediation system. The RAP also provides detailed procedures for monitoring the progress of cleanup and criteria for recommending closure. Upon approval of the RAP, the system is installed and operated until cleanup levels are met, or it can be demonstrated that the point of diminishing returns is reached. AEI is very cognizant of the need to maximize the value of client dollars spent on remediation. AEI’s track record includes numerous release sites that have gained case closure through the implementation of cost-effective remediation methods.
Typically required in the case of open release sites, AEI assists our clients with assessing the extent of groundwater contamination. Through the installation and sampling of a network of monitoring wells, the lateral and vertical extent of groundwater contamination and the rate at which the contamination is migrating toward sensitive receptors such as surface water bodies and water supply wells is evaluated. We assist clients in achieving the necessary documentation to proceed toward site closure, or risk assessment and remediation if needed.
AEI assists clients with achieving site closure or no further action (NFA) status with open release sites through monitoring, remediation, and regulatory reporting activities. AEI also assists clients with facility closure of industrial sites in the event that hazardous materials must be removed and facility equipment decommissioned. Proper closure is critical for lenders and property owners in connection with potential liabilities associated with former tenant operations.
Properties that become abandoned or underused due to suspected contamination are commonly
referred to as “brownfields”. Brownfields often contain contaminants from prior operations. AEI works with
commercial and industrial property owners and developers to identify potential legal responsibilities and
integrate appropriate remedial measures for Brownfield sites. AEI provides a full range of services including due
diligence (Phase I and Phase II assessments) and when needed pollution characterization and the evaluation and
implementation of mitigation methods.
AEI’s comprehensive approach to delivering due diligence, site investigation and remediation, industrial hygiene and construction services assures clients they are managing their risks while meeting regulatory obligations in the most cost effective way possible. Occasions arise when additional regulatory assistance is needed. AEI’s national staff of experts can give compliance consultation and design plans for solving a host of issues regarding environmental regulations.
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