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TRC Companies

Environmental engineering and sustainability consulting services

Senior Toxicologist

Risk, Regulatory & Legal AdvisoryConfirmed live in the last 24 hours
Full-time

About the Job

Requirements

  • A PhD in environmental toxicology is required.
  • A minimum of 30–35 years of experience in report preparation, including performing risk assessments and related reports such as exposure assessments and toxicological assessments.
  • Strong understanding and working knowledge of state and federal regulations, including the Massachusetts Contingency Plan, Maine Remedial Action Guidelines, and Comprehensive Environmental Response, Compensation, and Liability Act guidance.
  • Ability to organize and evaluate scientific data.
  • Ability to prioritize and perform multiple work assignments simultaneously and efficiently, and to prepare clear and concise reports, correspondence, and other written materials.
  • Willingness to mentor mid- and entry-level staff in risk assessment and state and federal risk assessment regulations and guidance.

Responsibilities

  • Lead the human health and ecological risk assessment team in performing data evaluation, exposure assessments, and risk calculations.
  • Research toxicological data and information to support human health and ecological risk assessments.
  • Support project teams by providing risk communication expertise for fact sheets and public meetings.
  • Prepare risk assessment reports and provide senior technical review of reports, including input for cost-effective risk-based closure strategies.
  • Provide senior technical review for EPA Region 1 on risk assessment and remedial action reports submitted by responsible parties or settling defendants for federal Superfund Sites; attend project meetings and provide guidance to EPA on risk-related issues.
  • Work cooperatively with EPA to prepare records of decision, explanations of significant differences, five-year review reports, and other EPA-led documents for EPA Superfund Sites.
  • Cultivate and nurture junior technical staff to increase expertise in supporting or leading risk assessment efforts under the Massachusetts Contingency Plan and similar state-governed environmental response programs.
  • Provide subject matter expertise for non-standard chemical exposure scenarios supporting the company safety program, hazardous building materials, and non-routine chemical exposures.
  • Communicate and coordinate with agencies on risk assessment-related activities.

About the Company

TRC Companies

Environmental engineering and sustainability consulting services

TRC Companies is a professional services firm that delivers environmental, engineering, technology, and sustainability solutions for public entities, private businesses, and government agencies. The company helps clients through environmental feasibility studies, consulting, engineering design, and construction management across markets such as air quality analysis, power industry services, and climate change studies. Its services are provided on project-based contracts and through long-term service agreements, enabling clients to plan, design, and implement infrastructure and environmental initiatives. What sets TRC apart is its 50-year track record, broad mix of capabilities, and steady focus on delivering measurable outcomes and practical solutions that improve safety, efficiency, and sustainability. The company's goal is to help clients advance infrastructure and environmental projects by offering concrete, quantified results and practical expertise.

Company size
5,001-10,000
Company stage
IPO
Headquarters
Lowell, MA
Founded
1961

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