Select Projects

Prop 65 Evaluation of Styrene in an Industrial Product:  Evaluated potential worker exposure to styrene from an industrial product.  Conducted wipe testing and off-gas testing, and modeled worker exposure to styrene via inhalation and incidental ingestion.  Compared estimated intakes to the Prop 65 Safe Harbor Limit.

Risk Assessments for Former Manufacturing Plant:  Conducted human health risk assessments for five sites associated with a former paint manufacturing plant.  Evaluated worker and residential exposures to constituents in multiple environmental media.  Calculated remedial goals to support feasibility studies.  Prepared reports, responded to US EPA comments, and presented results at agency meetings.

Prop 65 Evaluation of Lead in Imported Food:  Performed an exposure evaluation for exposure to lead in a line of imported food products.  Coordinated the analytical testing, and conducted a statistical evaluation to determine consumption amounts for the food type at issue.  Compared expected lead intake to the Safe Harbor Limit for lead, and assisted in settlement negotiations.

Prop 65 Evaluation of Lead in Baby Food:  Modeled blood lead concentrations to quantify the impact of intermittent ingestion of lead in baby food, juice, and packaged fruit.

Risk Assessment Near Copper Smelter:  For the New Mexico Environment Department, performed a multipathway human health risk assessment to evaluate exposure to metals present in various media due to past smelter emissions and windblown dust from tailings ponds.  Attended public meetings with a community group.

Lead Exposure in Imported Toys:  Evaluated potential lead exposures to children from contact with imported toys with lead-based paint exceeding US CPSC limits.  Performed blood lead modeling to evaluate the effect on blood lead levels from ingestion of lead in the surface coating.  Evaluated dermal contact using the results of wipe tests and developed analysis methods to evaluate lead leaching into saliva under a mouthing scenario.

Risk Assessment Near Primary Lead Smelter:  Performed risk assessments for areas around a primary lead smelter in Missouri.  Evaluated human health risks from exposure to lead ore concentrate on haul roads, as well as community risks to children and adults from exposure to lead and other heavy metals in residential soils and slag piles.  Performed blood lead modeling and developed soil lead cleanup levels.

Selected Publications

Mattuck, R. 2018. “Evaluating Exposure to Lead in Food Under CA Proposition 65.” Presented at the IFT18 Annual Meeting & Food Expo, Chicago, IL, 15p.

Seeley, M; Mattuck, R; Beck, BD. 2017. “Evaluating the Impact of US EPA’s Proposed Blood Lead Model Revisions on Soil Remediation Levels.” Presented at the Society of Toxicology (SOT) 56th Annual Meeting, Baltimore, MD, March 12-16.

Mattuck, R; Liu, X; Greenberg, GI. 2017. “Exposures to Styrene from Food Packaging Under CA Proposition 65.” Presented at the Society for Risk Analysis (SRA) Annual Meeting, Arlington, VA, December 10-14.

Greenberg, GI; Mattuck, RL. 2016. “Screening Assessment for Unique Human Health Exposure Pathways.” Presented at SETAC North America 37th Annual Meeting, Orlando, FL, November 6-10.

Mattuck, R. 2016. “Comparison of Risk-based Concentrations Derived for Pesticides in Drinking Water with US EPA Human Health Benchmarks.” Presented at the Society for Risk Analysis (SRA) Annual Meeting, San Diego, CA, December 11-15.

Goodman, JE; Seeley, M; Mattuck, R; Thakali, S. 2015. “Do group responses mask the effects of air pollutants on potentially sensitive individuals in controlled human exposure studies?” Regul. Toxicol. Pharmacol. 71:552-564.