Bio
Mr. Mark Schroeder is an engineer with 8 years of consulting experience in environmental engineering and has focused experience in the fate and transport of traditional and emerging contaminants in groundwater, soil, and sediment. He has expertise in using R, Python, and GIS tools for complex statistical data analyses for site characterization, remedial designs, and litigation support. Mr. Schroeder is an experienced leader of field efforts for sample collection, pilot study implementation, and construction oversight.
Relevant Experience
Site Investigation and Soil Remediation
McKenzie Avenue Cleanup Site, Bellingham, Washington — Led pre-design investigation sample collection to delineate extent of petroleum and heavy metals contamination. Coordinated ground disturbing work with archeological oversight. Supported development of remedial design engineering specifications. Supported applications for permitting related to the Construction Stormwater General Permit (CSWGP), State Environmental Protection Agency Checklist, Site Alteration and Excavation Permit, and municipality requirements.
Former Manufactured Gas Plant (MGP) Site, Missoula, Montana — Supported data analysis for multiple rounds of soil and groundwater sampling to characterize site conditions, environmental assessment, and remedy evaluation.
Injection Barrier Wall Pilot Study for PFAS Contamination, Alaska — Led the pilot study of colloidal activated carbon (CAC) injections to mitigate a plume of PFAS in a shallow aquifer. Supported production of related interim remedial action reports in 2024 and 2025.
Wood Treating CERCLA Facility, Springfield, Missouri — Supported engineering tasks and the preparation of biennial and semiannual reports for a stormwater discharge basin. Prepared sections of text, figures, and tables to demonstrate the effect that storm size has on a surficial aquifer and transport of creosote-like contaminants into the basin from the contaminated aquifer. Used R scripting to automate production of hydrographs and document exceedances of screening benchmarks.
PFAS Treatment Cost Analysis Support, Various Locations, United States — Cost model analysis for PFAS drinking water treatment systems. Prepared process flow diagrams for granular activated carbon (GAC) and ionic exchange PFAS treatment systems. Assisted with text and material development to support expert opinions.
Wood Treating CERCLA Facility, Columbus, Mississippi — Supported engineering tasks with cost estimates, weekly activity logs, and coordination with external vendors for hazardous waste disposal. Provided additional support with ArcGIS for mapping tasks. Coordinated with third-party vendors for appropriate hazardous waste disposal to meet state and federal requirements.
Lower Passaic River Superfund Site, Newark, New Jersey — Supported engineering feasibility study for sediment remediation in the Lower Passaic River Superfund site by developing the Green and Sustainable Remediation appendix to assess environmental impacts.
Litigation Support
PFAS Litigation Support, Various Locations, United States — Developed scripted tools for automation of data extraction from documents and public websites for exploratory data analysis and the development of cost estimates to support expert opinions. Performed clustering and principal component analyses to assess the fate and transport of PFAS migration through a river. Supported document review and data collection from thousands of documents.
Manufactured Gas Plants Litigation Support, Various Locations, United States — Reported on the analysis of historical documents to assess releases of MGP-related contaminants to the environment. Analyses contributed to an expert report narrating the events that led to widespread site contamination.
Allocation Support for Portland Harbor Superfund Site, Willamette River, Oregon — Support for data analysis and the fate and transport of contaminants in sediment in the Willamette River. Used ArcGIS and R Scripting to visualize the transport of contaminants upstream and downstream of the client site. Supported writing a technical memorandum for upland sources.
Expert Report Support at a Site in North Providence, Rhode Island — Reviewed historical remediation activities and drafted section of the expert report. Reviewed the historical operations and witness testimonies to assist with expert opinion. Used R Scripting and ArcGIS for organization of preliminary data sets and drafting of figures.
PCB Exposure Analysis Support, Washington — Supported data analysis, data organization, and quality control for PCB sampling data in air, wipe, and soil samples. Used R Scripting to prepare data for summary statistics and use in ArcGIS to visualize areas with potential exposure.
Stormwater Management
6PPD-Q Subgroup Contributions for Interstate Technology & Regulatory Council, United States — Supported experts across the country in developing a framework for understanding the emerging contaminant 6PPD-Q as private and public sectors grapple with the impacts of this contaminant and methods to manage it.
Data Analysis
GIS Data Analysis and Figure Production — Proficient with using ArcGIS for data visualization and analysis, and for generating production figures to be used in technical reports. Developing tools used for automating repetitive processes using R and Python scripted computer languages.
R Scripting — Proficient with data preparation, visualization, and analysis. Regularly used for data exploration and development of production figures. Developed internal documentation for bridging R scripting and ArcGIS for more advanced tools to automate mapping tasks. Developed tools for automated data extraction from received document sets. Actively involved with the Data Analysis Practice Group and initiative to improve internal QA/QC practices.
Education & Credentials
M.S., Environmental Engineering, University of Colorado Boulder, Boulder, Colorado, 2018
B.S., Environmental Engineering, Oregon State University, Corvallis, Oregon, 2015
Professional Engineer, Washington (License No. 24012584)
Engineer in Training, Oregon (License No. 91664EI)
Continuing Education
OSHA 40-Hour HAZWOPER
OSHA 8-Hour HAZWOPER Supervisor
First Aid/CPR/AED Certified
Professional Affiliations
Interstate Technology & Regulatory Council Contributor (2023–2025)
Insights & News
Posters
A Comparative Analysis and Decision Framework for Handling Non-Detects in TSCA Risk Evaluations
Videos
Emerging Contaminants in Stormwater: Webinar