Microplastics
Clients turn to Geosyntec to better understand the evolving disclosures, research, and regulations surrounding microplastics. As leaders in addressing emerging contaminants, our professionals apply advanced technologies to assess risk and create comprehensive solutions that address microplastics in the environment.

Practice Specifics
Our experts follow the latest research and regulatory developments in the field of microplastics and have contributed to the Interstate Technology and Regulatory Council’s (ITRC) microplastics guidance document. Our staff are also collaborating with Southern California Coastal Water Research Project (SCCWRP) and other field experts to update the first of its kind open-source database for microplastics toxicity data, the Toxicity of Microplastics Explorer (ToMEx).
What Are Microplastics?
Microplastics are plastic particles 5 millimeters or smaller in diameter and can be found in the environment, food and water, and humans and animals.
These particles are released from a variety of sources, can be different sizes, shapes, and polymer types, and can contain chemical additives. They include microfibers from synthetic clothing and textiles, plastic pellets used in manufacturing (nurdles), tire-wear particles, and breakdown products of larger plastic items. Their diverse characteristics create major challenges when assessing fate, transport, and toxicity.
Markets Impacted by Microplastics
Because microplastics are ubiquitous in the environment and generated from so many sources, they impact many markets, including petrochemical manufacturing; product manufacturing; and food, beverage and product packaging. Key markets also include water supply, wastewater, industrial water, and agriculture.
Core Services to Address Microplastics
In partnership with clients, our experts across disciplines develop strategies to navigate the ever-changing field of microplastics. We offer a comprehensive suite of services rooted in experience, research, and thought leadership.
Contaminated Sites Services
- Overview of Contaminated Site Assessment and Cleanup
- Air Quality Management and Air Pollution Control
- Brownfield Redevelopment Planning and Design
- Conceptual Site Model Development
- Contaminated Media Investigations and Assessments
- Detection and Culturing of Microbes for Environmental Applications
- Environmental Data Clearinghouse
- Environmental Forensic Studies
- Fate and Transport and Hydrogeological Characterization
- Remedial Design
- Groundwater Assessment and Remediation
- Risk Assessment and Applied Toxicology
- Hydrogeological Characterization and Modeling
- Per- and Polyfluoroalkyl Substances (PFAS)
- Regulatory Strategy and Cleanup Goal Development
- Remediation System Operation and Optimization
- Sediment Assessment and Remediation
- Treatability and Pilot Studies
- Vapor Intrusion Assessment and Remediation
- Waste Management Planning, Engineering, and Design
- Global Product Stewardship
- Innovation
- Vapor Intrusion Mitigation
- Vapor Intrusion Due Diligence
- Vapor Intrusion Guidance
- Vapor Intrusion Site Characterization

Lead Practitioners
Microplastic Projects
Interstate Technology and Regulatory Council (ITRC)
United States
Confidential Federal Client
United States
Geosyntec
United States









