Emily Guyer, P.E.

Expert Mediation Settlement Support, Confidential Superfund Site, New Jersey — Served as task manager and primary technical support to experts for a PRP group at a complex site with collocated arsenic, waste oils, and tar processing residuals, with multiple forms of nonaqueous-phase liquids (NAPLs) in soils, groundwater, and river sediments. Developed an allocation framework, including cost scenarios for negotiations concerning future site redevelopment, Gore factors, and other criteria. Prepared an allocation report and mediation statement, delivered technical presentations to a mediator, and provided real-time technical support at the mediation table. Supported the successful defense of the client group against a significant third-party cost claim, reducing the upland claim by more than two orders of magnitude and eliminating remediation and natural resource damages liability for river sediments entirely.

Cost Allocation, Confidential Sediment Superfund Site, New York — Served as project manager and consulting expert, providing technical support to a small industrial party for liabilities associated with historical manufacturing operations at a complex urban waterway site contaminated with PAHs, PCBs, metals, and NAPLs, including tar from multiple sources. Evaluated chemical fate and transport and remedial cost drivers. Performed source identification, risk assessment, and bioavailability evaluations. Quantified and determined the fate of historical contaminant loadings. Carved out remedial design and construction costs related to sources. Partnered with counsel to demonstrate to the allocator that the client’s liabilities were de minimis.

Consulting Expert Support, Confidential Superfund Site, Puget Sound, Washington — Act as project manager, consulting expert, and strategic lead for an industrial client with liabilities associated with historical manufacturing activities at a complex urban waterway site. Conduct historical operations research, environmental data analysis, mapping, remedy driver and cost evaluations, and chemical fate and transport evaluations. Also prepare reports and disclosure documents. Partner with the client and outside counsel to develop an innovative approach to resolve liabilities. In addition, serve as project manager and technical lead for development of three conceptual restoration design alternatives to mitigate natural resource damages in the same waterway, within the framework of the Trustee Council’s natural resource damage assessment and CERCLA cleanup process. Restoration alternatives include mudflat, riparian, and marsh habitats and off-channel configurations. Apply engineering principles to assess constructability, sediment dynamics, and remedial feasibility of each alternative, and partner with a team of ecologists to calculate the ecological value of each. Lead a team developing sampling, analysis, and permitting plans for sediment remediation and intertidal habitat restoration. Participate in stakeholder meetings to present restoration concepts and the alternatives evaluation.

Cost Allocation and Natural Resource Damage Support, Confidential MTCA Cleanup Site, Salish Sea, Washington — Served as project manager and consulting expert for allocation of sediments impacted with PAHs, PCBs, and dioxins at a Model Toxics Control Act (MTCA) cleanup site. Led a multidisciplinary expert team integrating expertise in sediment transport and analysis of sewer discharges. Served as lead author of an expert report addressing allocation of sediment cleanup costs and natural resource damages, defending the client against liability associated with stormwater discharges by applying expertise in municipal stormwater permitting and treatment. Supported restoration alternatives identification and evaluation and planning-level cost estimation as part of a natural resource damage assessment.

Allocation Support for Multiple Sediment Sites, Upstate New York — Provided consulting expert support and project management. Performed reviews of historical operations and remedial design documents and assessed remedy cost drivers and physical and forensic chemical characteristics to distinguish sources of PAHs, metals, and NAPLs in lake and tributary sediments in upstate New York.

Litigation Support, U.S. West Coast — Served as project manager for a confidential matter involving a broad assessment of causation related to an emerging stormwater contaminant on the U.S. West Coast. Led a multidisciplinary team of scientists and engineers to evaluate the latest science and literature and multiple candidates for potential impairments to threatened and endangered species. Coordinated technical strategy and stakeholder engagement in support of ongoing litigation.

Consulting Expert Support, Superfund Site, Illinois — Serve as project manager for a confidential Superfund matter involving an initial liability assessment for a railroad party. Direct records collection and analysis from university and national archives to evaluate historical operations and assess potential liabilities of the client and other PRPs. Lead the technical review of the proposed CERCLA remedy, including a National Contingency Plan consistency evaluation, ARARs evaluation, cost estimation review, and remedy selection analysis, and support the legal team in responding to EPA Section 104(e) information requests to inform the client’s response to a special notice letter.

Pearl Harbor Sediment Remediation, Hawaii — Provided engineering support and progressively senior technical oversight for an electrical utility client in connection with the U.S. Navy’s Superfund cleanup of PCB-impacted sediments in Pearl Harbor. As project engineer, reviewed and provided technical opinions on the Navy’s RI/FS documents, co-authored a PCB source tracing and control action plan accepted by the Navy, and authored a cleanup cost estimate. As design engineer, designed source control mitigation measures, including soil and sediment removal, capping, sewer cleaning, and erosion and sediment controls. Prepared bid packages that included technical specifications and engineering drawings for sediment remediation and sewer cleaning work. Currently providing senior technical reviews of contractor submittals for ongoing cleanup work.

Former Manufactured Gas Plant (MGP) Site, Newark, New Jersey — Evaluated and selected remedial alternatives for MGP-contaminated soil. Performed as project engineer to develop design plans for interim remedial measures, including preparation of engineering drawings. Prepared construction bid specifications for soil remediation. The scope of the project involved the installation of an approximately 1,500-linear-foot barrier wall, excavation of 54,000 yd³ of soil, construction of a 1.2-acre engineered cap, and in situ oxidation. An active business was present on site and continued to operate during all phases of the remedial activities. Work also included all permitting necessary for implementation of the remedy and oversight. Also served as project engineer to develop the final site plan for City of Newark approval. Work included preparation of site restoration drawings, calculations, and details for a commercial parking lot to be constructed at the site after completion of remedial activities. Detailed design included layout of the 52,000 ft² parking lot in accordance with local codes, including stormwater drainage, lighting, and landscaping design and a traffic flow analysis. This work included close coordination with city engineers and members of the City of Newark Central Planning Board.

Lower Passaic River Superfund Site, New Jersey — Served as project engineer and primary author for feasibility studies evaluating five sediment remedial alternatives for a Superfund site spanning more than 17 miles of river. Prepared cost estimates and supporting engineering calculations for each alternative. Evaluated dredged material management options, including confined aquatic disposal, open water disposal, and confined upland disposal, and assessed options for beneficial reuse of dredged material under the New York/New Jersey Harbor Dredge Material Management Plan. Additional technical support included navigation channel deepening considerations during active cleanup operations, future waterway user assessments, residuals management evaluations, and remedial technology evaluations.

Soil and Sediment Remediation at a Former MGP Site, New York — Prepared the remedial design work plan and engineering design documents for regulatory approval, including engineering drawings, a sampling and analysis plan, a citizen participation plan, design mix testing requirements, specifications, and other ancillary plans for the remediation of upland soil and sediment at a former MGP site.  Selected remedial technologies included in situ solidification, removal, and capping.

Remedial Design and Site Reclassification of a Commercial Site, Great Neck, New York — Prepared remedial design documents and drawings for a chlorinated solvent site in Great Neck, New York.  Remedial design components included an upgrade of a sub-slab depressurization system (SSDS) with electrical performance/operational monitoring components.  Also performed a confirmatory round of groundwater sampling and worked closely with regulators to reclassify the site.

Multiple Sites throughout Brooklyn, Queens, Bronx, Manhattan, and Staten Island, New York — Assisted in preparation of remedial design specifications and drawings for multiple sites throughout New York City.  Remedial design components included gas vapor barriers and SSDSs for new commercial building and school construction.  Assisted in collaborations with architects to incorporate environmental design into overall new construction design packages.

Feasibility Studies for Multiple Media at Former MGP Superfund Sites, New York — Prepared feasibility studies to address MGP-related contaminants above applicable or relevant and appropriate requirements in soil, sediment, and groundwater. Feasibility study reports included a summary of existing conditions; the identification of standards, criteria, and guidance; remedial action objectives; the identification and screening of remedial technologies and process options; alternatives for each media and a detailed analysis of the alternatives; a comparative estimate of capital and operation and maintenance costs; and the selection of a preferred remedy for each contaminated medium.

Remedial Action Work Plan for PCB Remediation, New Rochelle, New York — Prepared the remedial action work plan for the remediation of PCBs in soil at a former military facility located on an island.

Former Metals Plating and Metals Products Sites, New Jersey and New York — Prepared feasibility studies and engineering design plans for contaminated soil and groundwater at Superfund sites. Prepared the feasibility study to address contamination of inorganic chemicals in soil, volatile organic compounds (VOCs), and semivolatile organic compounds (SVOCs) in groundwater and surface water as well as inorganic chemicals and SVOCs in sediments. Technologies included soil excavation, ex situ groundwater treatment, and sediment capping. Also provided risk management support, including presentations to the public. Evaluated state land use (e.g., freshwater wetlands, flood hazard area) permit issues associated with construction of the groundwater treatment plant. Prepared remedial design documents and freshwater wetlands and flood hazard area submittals to the New Jersey Department of Environmental Protection under its Land Use Regulation Program.

Soil Erosion and Sediment Control Plans, New Jersey — Prepared multiple soil erosion and sediment control plans, including engineering drawings, for approval from local soil conservation districts for remedial construction activities.

Gas Works Park MTCA Sediment Cleanup, Seattle, Washington — Served as design engineer for feasibility evaluations at an MTCA sediment cleanup site. Using sediment physical and geotechnical data, performed engineering calculations to assess sediment dredgeability and residuals management to support remedy selection. Supported evaluation of cleanup alternatives, including an assessment of remedial technology performance, constructability, and compliance with MTCA cleanup standards.

McKenzie Street Contaminated Site Engineering Design, Bellingham, Washington — Serving as project manager for engineering design of an excavation remedy addressing petroleum hydrocarbons and metals in soil on behalf of the City of Bellingham. Managing multiple subcontractors, including geotechnical engineers and archaeologists, and coordinating with city staff and stakeholders. Work elements include pre-design sampling, excavation area delineation, and preparation of design drawings, technical specifications, and permit applications addressing municipal requirements, geotechnical constraints, and cultural resource concerns. Cleanup designed to meet MTCA requirements.

Former Dry Cleaners, Mukilteo, Washington — Serve as project manager overseeing long-term compliance with an environmental covenant at a former dry-cleaner site with residual perchloroethylene (PCE) and trichloroethylene (TCE) contamination in soil. Supported the legal team in preparing the environmental covenant for Washington State Department of Ecology review and acceptance. Manage collection of sub-slab soil vapor, indoor air, and outdoor air samples in accordance with Washington State Department of Ecology’s vapor intrusion guidance to evaluate exposure risks and ensure continued protectiveness of the remedy.

Former MGP Site, Missoula, Montana — Serve as project manager and communications lead for environmental assessment and remedial planning at a former MGP entering a state voluntary cleanup program. Led development of a conceptual site model integrating site history, nature and extent of contamination, chemical fate and transport, migration pathways, human and ecological risks, and key data gaps. Coordinated additional site investigation to fill data gaps in support of remedy planning. Currently leading risk evaluations to support Montana’s consideration of updating water quality standards to focus on toxicity-driving contaminants, consistent with EPA maximum contaminant levels, which will allow the client and others in the cleanup program to adhere to cleanup goals driven by toxicity, resulting in more targeted and effective remedies. Managing multiple subcontractors and coordinating technical activities across disciplines.

Fuel Oil Terminal, Brooklyn, New York — Served as project manager for remedial investigation and engineering and liability support. Prepared the remedial investigation work plan, managed field activities for the remedial investigation, and supported preparation of the remedial investigation report for a fuel oil terminal in Brooklyn, New York. Also acted as design engineer for a solar-powered light NAPL recovery system. Field activities included the collection of soil, groundwater, and light NAPL samples in addition to product recovery system installation oversight. Strategic remediation management and close coordination with multiple stakeholders successfully removed the fuel oil terminal client from liabilities at an adjacent property, and the regulatory agency granted a “No Further Action” designation for the site.

In Situ Oxidation Treatment of PCE–Contaminated Groundwater at a Superfund Site, Upstate New York — Provided task management and execution of a 10,000-gallon in situ chemical oxidation treatment of PCE-contaminated groundwater. Provided consultation to the EPA project manager and the New York State Department of Environmental Conservation project manager as the project was transitioned from EPA to the State of New York. Provided installation oversight and managed five subcontractors with four mobilizations. Performed work in harsh winter weather, in confined space entry conditions, and inside abandoned buildings for most of the subsurface effort. Obtained a shared vision with the client on a revised injection approach when subsurface conditions varied from previously documented information. Groundwater monitoring data demonstrated that an overall decrease in VOC contamination to achieve below-treatment goals was successful.

Environmental Due Diligence, Multiple Sites, New York and New Jersey — Performed multiple Phase I environmental site assessments (ESAs) for redevelopment projects throughout the New York City metro area.  Work included site inspections, Phase I ESA reporting, and probabilistic cost estimation for remediation and redevelopment scenarios.

Ecological Risk Assessment at PCB-Contaminated Commercial Site, New Jersey — Performed fieldwork associated with the ecological risk assessment for a site contaminated with PCBs.  Work included supporting the risk assessment lead in small mammal collection for laboratory analysis.

Ecological Risk Assessment at PCB-Contaminated Federal Site, Virginia — Performed fieldwork associated with the ecological risk assessment for a federal site contaminated with PCBs.  Work included shellfish collection for laboratory analysis.

Groundwater Investigation, Great Neck, New York — Conducted low-flow groundwater sampling to confirm a site was not a contributing source of VOCs to groundwater.

Phase II Investigation and Liability Support, Brooklyn, New York — Planned, managed, and oversaw the collection of soil and groundwater samples to investigate areas of concern and potential CERCLA liability at a site located along an urban waterway.

Chemical Forensics Sampling, Multiple Sites, New York and New Jersey — Supported environmental forensics experts in collection of surface soil, surface sediment, surface water, and sheen samples for forensics analysis.

Free Product Delineation, Long Island City, New York — Provided task planning and field oversight for delineation of free product via laser-induced fluorescence at a site in Long Island City.  Delineated a small volume of free product in the subsurface and performed recovery and confirmatory groundwater sampling to achieve site closure.