Ecological and Human Health Risk Assessor

Ecological and Human Health Risk Assessor

WSP is looking for an Ecological and Human Health Risk Assessor with three to five years of experience to join our Chelmsford, Massachusetts office. The role focuses on executing risk assessments for the United States Environmental Protection Agency, the Massachusetts Department of Environmental Protection, and other state programs while learning and applying both ecological and human health assessment techniques.

• Extensively use Microsoft Excel to analyze chemical data and calculate ecological and human exposure risk.
• Learn and use standard risk assessment spreadsheet tools.
• Learn and understand regulatory and technical requirements for conducting risk assessments under specific regulatory programs.
• Document in written text risk assessment activities that have been completed, including data evaluation, selection of chemicals of potential ecological concern, exposure assessment, toxicity assessment, and calculations of cancer risk and noncancer hazard.
• Conduct quality assurance/quality control activities for work products prepared by colleagues.
• Conduct work activities within identified budget and schedule requirements.
• Contribute to the preparation of proposals to win new work for small and large projects that include a risk assessment component.
• May contribute to technical presentations or papers for publication.

• B.S. or M.S. in Ecology, Biology, Environmental Science, or related scientific discipline.
• 3-5 years of relevant experience in risk assessment.
• Knowledge of risk assessment principles, procedures, and guidance particularly USEPA CERCLA and Massachusetts Contingency Plan (MCP).
• Strong technical writing skills.
• Ability to communicate effectively, both verbally and in writing, listen and engage, including communicating technical information effectively.
• Familiarity using Microsoft Excel for the presentation of data, calculations, and data evaluation.
• Troubleshooting and problem‑solving skills.
• Knowledge of the principles and standards of scientific study.
• Ability to work effectively with team members as well as independently.
• Must be well organized, able to manage and prioritize several assignments at one time, and deliver on time and within budget.
• Able to work in the field to collect samples.

• Experience with risk assessment‑specific tasks (presentation of analytical data and dose‑response data, selection of chemicals of potential concern, calculation of exposure point concentrations (Excel and ProUCL), and calculation of cancer risk and Hazard Index) is desirable.
• Experience with metals, polycyclic aromatic hydrocarbons, and per‑ and polyfluoroalkyl substances is desirable.

WSP USA is the U.S. operating company of WSP, one of the world’s leading engineering and professional services firms. With more than 15,000 employees in over 300 offices across the U.S., we partner with clients to design lasting solutions in the buildings, transportation, energy, water, and environment markets. We offer a flexible workplace model that balances office and remote work with a three‑day in‑person policy.

WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer. Race, Age, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Disability, or Protected Veteran Status are protected characteristics. The selected candidate must be authorized to work in the United States.