Innovative Environmental Engineering Services 

SESI Consulting Engineers provides environmental engineering services including due diligence, design, and remediation services for all facets of the construction and real estate industry. SESI’s partnership with our Clients helps to protect buyers from environmental liability; brings underutilized and environmentally impacted Sites back to productive use; and serves to protect human health and the environment. SESI provides industry-leading solutions to all projects, including the most complex environmental sites.

Recent Work

Our Environmental Engineering Services

The following is a list of the environmental engineering services that SESI provides to our clients:

  • Brownfield Site Redevelopment

    Properties that have hazardous contaminants require specialty evaluation and remediation which abides by local, state, and federal guidelines.

  • Construction Dewatering & Seepage Studies

    The design of treatment systems for site groundwater/rainwater to be discharged to municipal sewer systems. The requires navigating the process of obtaining discharge permits from Municipality, County, and/or state regulatory authorities. Regular testing of discharge water is also performed to ensure that contaminant levels in the discharge water meet the effluent limits specified in the permit.

  • Environmental Site Assessment & Due Diligence

    The overall process to assess environmental-related risks and liability of a property and to determine the feasibility of the potential purchase and economic reuse of the property. The process typically begins with database inquiries, records searches, interviews, and site reconnaissance that are documented in a Phase I ESA report, or Preliminary Assessment Report in New Jersey. If Recognized Environmental Conditions (RECs) or Areas of Concern (AOC) are discovered, then environmental investigation (Phase II ESA or Site Investigation) is performed based on the findings of the Phase I ESA or Preliminary Assessment.

  • Expert Witness Testimony

    A Client should always be confident with the advice their hired expert provides, but questions may arise after construction from internal or external sources. An SESI expert can review the information and act as an expert witness, provide testimony, and prepare expert reports.

  • Fill Source Sampling & Evaluation

    We help our Clients fulfill the requirements for sourcing of all fill from construction Sites and permitted facilities and provide the coordination to evaluate which facilities are economical and suitable for use on their projects. We also work to assist with compliance and tracking for fill sources, where warranted and applicable.

  • Forensic Investigations

    The collection and evaluation of site samples, historical data, and other available information to reconstruct a site to understand how the property became contaminated; to determine liability of various parties; and/or to evaluate the fate and transport of various contaminants.

  • Groundwater Investigations & Remediation

    The level of evaluation will depend on the project use, characteristics of the site, and availability of existing information/reports. In order to determine a base of cost estimate, and project feasibility, the preliminary investigation will investigate the subsurface material’s hydrologic and geologic characteristics.

  • Industrial Site Recovery Act (ISRA)

    Applicable to owners of facilities with specific industrial classifications, the ISRA requires them to investigate and remediate any issues prior to property transfers.

  • Landfill Engineering & Closure

    Landfills pose unique challenges in both the planned use and 30-year post closure use of the site. To ensure the public and environmental health is preserved, landfills are designed to be “functionally stable” with leachate and gas collection systems as well as stormwater management systems.

  • Licensed Site Remediation Professionals (LSRP)

    The Site Remediation Reform Act (SRRA) of 2009 implemented the LSRP program, which licenses private-sector professionals to navigate the rules and regulations for contaminated sites, providing oversight for the remediation phases, and completing necessary steps to issue a Response Action Outcome (RAO). This program has proved successful in expediting the clean-up of contaminated sites in New Jersey.

  • Permitting & Environmental Regulatory Compliance

    Permitting and compliance services to confirm that businesses, facilities, individuals, and/or redevelopments are in compliance with applicable laws, regulations, and codes designed to protect human health and the environment. There are various local, state, federal regulations a project may be subject to and we help pinpoint, acquire, and manage appropriate permits.

  • Phase I Environmental Assessment (Phase I ESA)

    Typically the first step in environmental due diligence for property transfers, this process identifies potential/existing recognized environmental conditions (RECs) resulting from current and historic site uses and possible adjoining property effects. Phase I ESAs are also utilized by lending firms during the potential sale of a property. Phase I identifies the potential for environmental liabilities.

  • Phase II Environmental Site Assessment (Phase II ESA)

    A Phase II ESA investigation may be conducted to confirm the findings of Phase I ESA. A Phase II ESA consists of collecting and analyzing soil samples, groundwater, and/or soil vapor samples to check for evidence of contaminant discharges as a result of current or historical activities/operations.

  • Preliminary Assessment Report (PAR)

    This is the first report to start the remedial process in NJ. It is the NJ equivalent of a Phase I ESA, with the exception that a PAR is under regulation in NJ and a Phase I ESA is a voluntary standard.

  • Remedial Investigation & Design

    This comprehensive investigation collects and evaluates data to determine the nature and extent of site contamination. The information is then used to establish the cleanup criteria and support technical and cost analyses of alternatives.

  • Sediment Stabilization

    The primary function of sediment stabilization is to contain contamination. The process involves applying and mixing a solution with sediment in or adjacent to the contamination. The area is then either removed or remains in place.

  • Site Investigation (SI)

    SI is a remedial step required in NJ in lieu of a Phase II ESA to confirm the findings of the PAR. A SI consists of collecting and analyzing soil samples, groundwater, and/or soil vapor samples to check for evidence of contaminant discharges as a result of current or historical activities/operations. SIs are typically limited in scope.

  • Site Remediation Oversight

    Proper execution of the environmental remediation design is necessary to avoid costly errors and penalties. We monitor remediation contractors to ensure the remedial action plan is being followed, the correct equipment is being used, and the operation is properly staffed.

  • Subsurface Investigations & Remedial Design

    The investigation of environmental media (soils, groundwater, soil vapor, etc.) at a Site below grade surface to evaluate the presence of environmental-related contaminants at levels that may be potentially harmful to human health and the environment. If environmental contamination is identified as a result of the investigation, a conceptual site model and remedial design are completed to outline the steps to confirm the extent of the contamination followed by the steps to remediate it will be implemented.

  • Treatability Studies

    Studies completed by using site Samples to determine the best of treatment options based on specific contamination and site variables, i.e. material types, soil/groundwater chemistry, leachability, etc.

  • Waste Characterization and Disposal Coordination

    The process of characterizing soil/fill material through environmental sampling and testing with the intention of removing and disposing of the materials at an approved offsite facility or Site.

  • Wastewater Management Planning - WWMP or Comprehensive Wastewater Management Plan (CWMP)

    This plan ensures that the project will not negatively impact wastewater systems that support the existing local community and natural environment. The public system and project wastewater systems are evaluated and designed to ensure neither system will be overwhelmed and fail under peak use.