Work
Open Source Tools
CompToxR
R package for accessing US EPA CompTox Chemistry Dashboard APIs and related chemistry products. Supports programmatic retrieval of chemical identifiers, properties, hazard information, exposure predictions, and cheminformatics data for risk-evaluation workflows.
Chorus
Constituent Hazard, Occurrence, Regulatory, and Uncertainty Screening. A screening framework for prioritizing environmental constituents by combining hazard and fate signals, occurrence evidence, regulatory benchmarks, and uncertainty-aware decision logic.
Concert
Chemical ontology harmonization and entity-resolution toolkit for identifier crosswalking, canonicalization, data reconciliation, and defensible transformation of messy source records into analysis-ready chemical data.
Serapeum
Local-first literature-review and research assistant built with R, Shiny, DuckDB, OpenAlex, and LLM-assisted analysis. Intended to make paper triage, metadata capture, and evidence synthesis reproducible instead of chat-log archaeology.
Software and Tools I Use
| Area | Tools |
|---|---|
| Analysis and visualization | R, tidyverse, ggplot2, plotly, Quarto |
| Applications and packages | Shiny, bslib, R package development, pak, renv |
| Databases and pipelines | DuckDB, SQL, reproducible ETL, FAIR/DRY data curation |
| Automation and integration | Python, shell scripting, GitHub Actions, APIs |
| Scientific and collaboration layer | Git, GitHub, Obsidian, Markdown, citation workflows, AI coding agents when the work is bounded and reviewable |
Research Focus
My EPA research spans risk characterization for water reuse, chemical safety data curation, and cross-disciplinary integration for chemical safety decision-making.
Technical Support
Region 8 RARE project: Evaluation of Produced Water Intended for Beneficial Reuse in Multiple Oil and Gas Basins. Stakeholders include EPA’s Region 3 and 6, US Department of Energy’s National Energy Technology Laboratory, and US EPA ORD-CCTE/CEMM
- Front-end R Shiny application development for site prioritization utilizing field and experimental data for acute, chronic, and cumulative toxicological evaluation.
New Mexico Produced Water Research Consortium’s Risk and Toxicology work group (workgroup lead), the Multi-State Coordination Counsel, and the Water-Portal and Data Management work group.
- Development of risk-based workflow to assess acute and chronic potential across human and ecological receptors and determine potential for fit-for-purpose usage of treated produced water.
Potable Water Reuse in Protein Production and Processing, Collaborative partnership of Tyson Foods, University of Nebraska, and the United States Department of Agriculture
Evaluating the Microbial and Chemical Quality of Air Handler Unit Condensate, US EPA project
Integrated Performance Framework for Emerging Contaminants in Wastewater Treatment Plants, US EPA project
Technical support for New Mexico State University’s Non-Targeted Analysis and Whole Effluent Toxicity testing efforts for produced water to assess acute and chronic effects of exposure.
Technical support for SSWR.411.3 : BIL/IIJA Funded Technical Assistance Projects to Support the Drinking Water State Revolving Fund
- Front-end R Shiny application development utilizing EJScreen and machine-learning models for site prioritization
Selected Awards and Professional Experience
- New Mexico Produced Water Research Consortium
- US EPA Shooting Star Award: “Region 8 is grateful for your work organizing and analyzing our produced water data”
Publications
Presentations, Posters, and Panels
Talks, posters, panels, and slide decks now live in the dedicated Presentations archive.