Adam Orion Flaxman, PG, LSRP

Mr. Flaxman is a Principal Hydrogeologist, Licensed Site Remediation Professional (LSRP) in New Jersey, and a Licensed Professional Geologist (PG) in New York with over fifteen years of experience. He serves as a strategic advisor to commercial and industrial clients, specializing in the management of complex environmental liabilities. His practice focuses on reducing remediation footprints and financial exposure through rigorous site characterization and the development of Conceptual Site Models (CSMs) that drive cost-effective solutions.

Mr. Flaxman possesses specialized expertise in fractured bedrock hydrogeology and the assessment of comingled plumes. He leverages this technical background to distinguish on-site discharges from off-site sources, protecting clients from unwarranted liability. He regularly directs remedial investigations for challenging contaminants—including chlorinated volatile organic compounds (CVOCs), 1,4-dioxane, and per- and polyfluoroalkyl substances (PFAS)—and incorporates forensic data evaluation to inform remedial design. Additionally, Mr. Flaxman manages compliance with the New Jersey Department of Environmental Protection (NJDEP) Industrial Site Recovery Act (ISRA) and the United States Environmental Protection Agency (USEPA) Toxic Substances Control Act (TSCA) regulations for polychlorinated biphenyls (PCBs), overseeing the implementation of remedial actions that address soil, groundwater, and vapor intrusion issues to achieve regulatory closure.

• Former Industrial Facility, ISRA Compliance, and LSRP Services. As Principal Hydrogeologist and LSRP, coordinated and provided guidance for the implementation of remedial investigation activities at an 8-acre property in accordance with ISRA regulations. The Site has a complex history, formerly operating as a lacquer manufacturing company, trucking terminal, and asphalt production facility. Detailed investigation activities involved characterizing and delineating a range of contaminants in soil, including petroleum-related volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), metals, PCBs, and residual product. Current remedial planning involves coordination with the USEPA to address PCBs subject to TSCA and residual product through a combined remedy of excavation and In Situ Stabilization (ISS).
• Commercial Facility, Remedial Investigation. As Project Manager, managed the investigation of a 7.5-acre former fuel oil distribution and dry cleaning facility overlying complex fractured bedrock. Investigation activities focused on characterizing and delineating CVOCs in overburden and multiple bedrock groundwater zones. Field investigations included a site-wide geophysical survey, packer testing, and Compound-Specific Isotope Analysis (CSIA). These forensic tools successfully demonstrated that off-site contamination was unrelated to client operations, identifying a comingled plume and significantly limiting the client’s remedial responsibility. Currently providing forensic technical support to evaluate contaminant transport pathways and historical discharge timing.
• Former Battery Manufacturing Facility, Strategic Closure. As Project Manager, directed the remedial investigation for a 30-acre former battery manufacturing site impacted by lead and VOCs. Utilized compliance attainment techniques (e.g., spatially-weighted averaging) and synthetic precipitation leachate data to eliminate the need for widespread excavation and costly off-site disposal. This strategic approach focused remediation efforts on high-priority zones to ensure regulatory closure, while remaining strictly protective of public health and safety and the environment. Developed a scope of work for supplemental investigation of CVOCs in multiple aquifers, including weathered and fractured bedrock, utilizing downhole geophysics and aquifer pump test data to confirm migration pathways.
• Litigation Support, 1,4-Dioxane Cost Recovery. As Project Manager, provided technical support to the testifying expert for a complex cost recovery lawsuit involving a regional public water supply system and significant sought damages. This project involved extensive contribution analysis, forensic data evaluation, and fate and transport modeling to assess liability and evaluate treatment alternatives for 1,4-dioxane. Prepared expert and rebuttal reports regarding remedial alternatives and costs.
• Two Manufacturing Facilities, Emerging Contaminants. As Project Manager, developed a comprehensive scope of work to conduct a remedial investigation at two neighboring manufacturing facilities, with a specific focus on emerging contaminants due to historical operations. A significant component of this ongoing work includes spearheading a strategic hydrogeological evaluation to obtain a Class III aquifer reclassification (non-potable use). This initiative aims to optimize cleanup standards and focus resources on relevant receptors. Currently developing a complex aquifer test plan to evaluate hydraulic communication between groundwater zones, integrated with an interim pump and treat strategy. This combined approach maximizes efficiency to accelerate the path to regulatory closure.