Gregory D. Martin, PG, LSRP

Vice President Principal Hydrogeologist


Contact Information

Phone: (856) 423-8800


Location: Logan Township, NJ


Site Assessment, Investigation, and Remediation

Property Transfer Support and Due Diligence

Environmental Forensics (Sources and Timing of Releases)

Hydrogeology/Complex Bedrock Investigations

Cost Allocation Between Time Periods, Parties, and/or Sources of Contamination

Standard of Care Assessments


BA, Geology - Colgate University

Gregory D. Martin, PG, LSRP

Vice President Principal Hydrogeologist

Mr. Gregory D. Martin, PG, LSRP is a Principal Hydrogeologist and Vice President with over thirty-five years of environmental experience. He is a graduate of Colgate University with a degree in Geology. Mr. Martin has varied and extensive experience conducting site investigation and remediation activities under various State and Federal programs in over twenty states. He has completed hundreds of projects of varying complexity with varied contaminants including light non-aqueous phase liquid (LNAPL)/petroleum hydrocarbons, dense non-aqueous phase liquid (DNAPL)/chlorinated solvents, PCBs, metals, and emerging contaminants. His practice has included a focus on complex bedrock conditions, DNAPL characterization, Industrial Site Recovery Act (ISRA) matters in New Jersey, and Act 2/Hazardous Sites Cleanup Act (HSCA) matters in Pennsylvania.


He is a Professional Geologist in Pennsylvania and licensed by New Jersey as a Licensed Site Remediation Professional (LSRP). Mr. Martin has also served on the Executive Board of the Licensed Site Remediation Professionals Association (LSRPA). Mr. Martin has been retained as an expert and testified on matters related to sources of on-site, off-site, and background contamination, timing of contamination, allocation of responsibility, adequacy of investigation and/or remediation, and reasonableness of past/future costs.

representative projects
  • NJ Industrial Site Recovery Act (ISRA): Mr. Martin has implemented and managed over 100 ISRA projects in NJ, ranging in scope from small manufacturing facilities to 300-acre industrial operations.
  • Licensed Site Remediation Professional (LSRP): Mr. Martin currently serves as the LSRP on multiple “new” and “opt-in” cases. The scope of services includes Preliminary Assessments, Site Investigations, Remedial Investigations, Receptor Evaluations, and Ecological Risk Assessments. He was active in the development of the rules, regulations, and guidance documents developed under the Site Remediation Reform Act (SRRA) through his involvement as a member of the Executive Board of the LSRPA.
  • Petroleum Hydrocarbons: Mr. Martin has conducted site investigation and/or remediation at several hundred petroleum hydrocarbon sites, ranging from retail service stations to oil terminals and former refinery facilities.
  • Bedrock/Chlorinated Solvents: Mr. Martin has completed investigation and remediation projects in complex bedrock settings for various contaminants with an emphasis on chlorinated solvents/DNAPL/LNAPL matters. Projects have been completed in New Jersey, Pennsylvania, and Maryland.
  • Litigation/Expert Witness: Mr. Martin has prepared expert reports and offered deposition testimony in approximately 20 matters related to landfills, transfer stations, retail service stations, pharmaceuticals facilities, metals manufacturing/foundry facilities, chemical manufacturing facilities, and residential properties. He has testified in trial for several of these matters.
  • Retained on behalf of the defendant in a Maryland case as a consulting expert and testifying witness for two separate but related mass-action lawsuits against hundreds of homeowners and commercial property owners due to alleged contamination of private supply wells. The complaint alleged personal injury and property diminution, among other claims, due to groundwater contamination and impact to the water supply aquifer.

  • Retained as an expert witness in a Pennsylvania case involving apportionment of contamination at a 100-acre major machinery manufacturing facility that had incurred past costs in excess of $10MM. The dispute was between current and former operators that had conducted similar, but slightly different operations over time. The opinions were related to allocation of responsibility for contamination, assessing the necessity of completed work in context of Act 2 requirements, distinguishing costs attributable to future land uses that were inconsistent with contractual agreements, reviewing the appropriateness of past costs, and evaluating the feasibility and estimated costs of proposed future remedial measures.

  • Retained as an expert witness in a New Jersey case on behalf of the defendant, a major oil corporation. Plaintiff alleged an estimated 1MM gallon release of gasoline during the defendants' prior operations at the Site. The opinions were related to quantification of actual release volumes; establishment of the hydrogeologic framework; allocation of responsibility for contamination, demonstrating and allocating costs attributable to the plaintiff’s releases; reviewing the appropriateness of past costs and evaluating the feasibility and estimated costs of proposed future remedial measures.

  • Trinity Industries, Inc. and Trinity Railcar Corporation v. Chicago Bridge and Iron Company.

  • Pharmacia (f/k/a Monsanto Company) v. Motor Carrier Services Corp., et al. (Deposition date: 12/15/05; Trial testimony date: 1/3/07).

  • Liberty Mutual Insurance Company v. Black & Decker Corp., et al. (Deposition dates: 10/21/99, 10/27/03).

  • Waste Management, Inc. v. Admiral Insurance Co., et al.

  • American Home Products, Inc. v. Adriatic Insurance Company. (Deposition dates: 10/20/00, 5/8/03).

  • Pfizer Inc v. Employers Insurance of Wausau. (Deposition date: 3/7/01).

  • Merck & Co. v. Federal Insurance Company, et al. (Deposition date: 12/6/99).

  • PQ Corporation v. Carleton Center Investors, LLC. (Testimony date: 8/13/99).