About Tandem Environmental

Tandem Environmental, LLC provides specialized environmental consulting services for companies, government agencies, and research groups. With experience in hydrogeology, high-resolution and adaptive site characterization, and PFAS technical consulting, Tandem delivers actionable solutions for the most challenging environmental projects.

Founded by Kristen Hasbrouck, PG, Tandem Environmental combines advanced scientific methods with practical field expertise to evaluate contaminant fate and transport, design robust site investigations, and develop data-driven conceptual site models (CSMs). Tandem supports regulatory compliance, risk evaluation, and remedial planning across federal and private-sector projects.

Tandem is committed to technical excellence, innovation, and clear communication, ensuring that stakeholders and clients have the insights they need to make confident, science-based decisions.