William Gilchrist, PG, LSRP

Principal Hydrogeologist


ContacT Information

Phone: Principal Hydrogeologist

Email: bgilchrist@rouxinc.com

Location: Logan Township, NJ


Due Diligence

Site Investigations and Remediations

Underground Storage Tank Closures and Investigations

NJDEP ISRA Investigations


MS, Geology - Eastern Kentucky University

BA, Geology - Ohio Wesleyan University

William Gilchrist, PG, LSRP

Principal Hydrogeologist

Mr. Gilchrist has over thirty years in environmental assessment, remediation, and risk management. He holds a BA in Geology from Ohio Wesley University and an MS in Geology from Eastern Kentucky University. He is a licensed Professional Geologist (PG) in Delaware, Pennsylvania, Kentucky, and Tennessee; a Licensed Site Remediation Professional (LSRP) in New Jersey; and a Registered Environmental Consultant in North Carolina. He is currently a Principal Hydrogeologist for Roux (1996-present). Mr. Gilchrist has conducted, managed, or overseen investigations and remediations at many sites located across the country.


Mr. Gilchrist has either conducted or managed the completion of due diligence projects and state- or federal-led environmental investigations and remediations for over thirty years. He has managed the investigation and remediation of dozens of sites under the New Jersey Department of Environmental Protection’s (NJDEP) Industrial Site Recovery Act (ISRA) and the the Pennslyvania Department of Environmental Protection’s (PADEP) Land Recycling Program (Act 2). He has performed over one hundred phase I environmental site assessments including many multi-property projects. Mr. Gilchrist has performed dozens of underground storage tank (UST) closures, including post-closure environmental investigations and remediations. He has completed soil and groundwater investigations associated with petroleum constituents, chlorinated volatile organic compounds, PCBs, and metals. Mr. Gilchrist has served as an Expert Witness on remediation of petroleum USTs.

representative projects
  • Project Principal and LSRP of an ISRA-triggered remedial action of a 24-acre chemical packaging site. Volatile organic compound (VOC) impacted soils were excavated as part of the property redevelopment. In situ bioremediation was performed to stimulate remediation of VOCs in the groundwater using the injection of nutrients to increase bioremediation by indigenous microbes. A vapor intrusion investigation was performed on- and off-site to evaluate whether vapor intrusion was a concern.
  • Project Principal and LSRP for the completion of the closure of 25 USTs and seven spill act incidents at a school campus in North Jersey. The Site had been investigated for over 25 years, and remediation had been ongoing for 20 years. Issued unrestricted remedial action objectives (RAOs) for all but two of the USTs. The effectiveness of an active remediation system was evaluated, it was ultimately removed and a Remedial Action Permit-Ground Water (RAP-GW) was issued for the limited remaining groundwater impact. A Restricted Use RAO was issued for the two USTs that were the source of the groundwater impact.
  • Project Principal and LSRP for the completion of an ISRA investigation at an industrial facility in southern New Jersey. The facility had historical releases of toluene from a former above-ground storage tank (AST). Groundwater had impacted off-site homeowner wells. Soils in the source area were excavated and groundwater monitored was performed until concentrations fell below the NJDEP Ground Water Quality Standards (GWQC). A Remedial Action Report (RAR) was prepared and an unrestricted use RAO was issued for the entire site.
  • Project Manager of a $1.5 million remedial investigation (RI) performed under Pennsylvania’s Act 2. The RI included the collection of over 250 soil samples and installation and sampling of close to 40 monitoring wells. The groundwater investigation included evaluation of both unconsolidated and bedrock aquifers and their interaction with a nearby major river. The constituents of concern included metals, primarily chromium (total and hexavalent), boron and manganese, PAHs, and conventional parameters including sulfate and sulfide. The field activities were completed with the oversight of the PADEP. A release of liability under Act 2 was granted to the client by the PADEP.
  • Managed a RCRA closure of a former wastewater treatment plant (WWTP) in Arkansas. The project included the preparation of a Resource Conservation and Recovery Act (RCRA) closure plan, coordination and oversight of the removal of the WWTP, and excavation of arsenic-impacted soils beneath the former WWTP area. The RCRA closure report was submitted to and approved by the Arkansas Department of Environmental Quality.
  • Served as a technical expert for an insurance carrier on a trial associated with a leaking heating oil UST. Although the plaintiff’s consultant claimed that the investigation and remediation would cost upwards of $150K, based on an expert report and deposition, the plaintiff settled with the insurer for $30K. The plaintiff and insurance company had Roux complete the remediation, which was completed for less than $25K.

  • Served as a technical expert for an insurance carrier on a trial associated with a leaking gasoline UST at an active gasoline service station. The plaintiffs claimed that the release occurred within the insurance company’s coverage period and demanded full coverage to complete the investigation and remediation. Based on review of historical documents, which was subsequently presented in an expert report, there was significant evidence of historical releases predating the insurance company’s coverage period. Support was provided during a mediated settlement for the case.