Cal/OSHA Advises Employers to Protect Workers from Wildfire Smoke
In Southern California, early April marked the start of wildfire season with two significant blazes: the Springs Fire in Riverside County and the smaller but still destructive Crown Fire…
Early-Season Heat Wave Prompts Urgent Worker Safety Measures in California
An early-season heat wave is impacting California this week, bringing unusually high, summer-like temperatures well above typical March averages. In response, Cal/OSHA is urging employers to take proactive steps to…
RHP Risk Management Presenting at the 2026 Society of Toxicology (SOT) Annual Meeting
RHP Risk Management is pleased to announce that members of our Human Health Risk Sciences team, Debra Kaden, PhD, ATS; Ashish Jachak, PhD, MBA; and Melanie Buser, PhD, DABT,…
RHP Scientists Present New Findings on Microplastics Exposure and Human Health
RHP Risk Management’s Ashish Jachak, PhD, MBA presented on RHP scientists’ latest advances in microplastics research at the 2026 Microplastics and Nanoplastics Exposure and Human Health Conference in Santa Fe,…
Vinyl Acetate (VAM) Proposition 65 Compliance: RHP Risk Management derives candidate No Significant Risk Levels (NSRLs) for inhalation and oral exposure
Vinyl acetate monomer (VAM) is a synthetic chemical building block used in the production of copolymers such as adhesives, sealants, coatings, and surface treatments. The Office of Environmental Health Hazard Assessment (OEHHA)…
Particle Deposition of Airborne Microplastic Fibers in the Human Lung: A Modeling Framework Linking Fiber Size, Shape, Orientation, and Polymer Type to Regional Lung Deposition
Particle Deposition of Airborne Microplastic Fibers in the Human Lung: A modeling framework linking fiber size, shape, orientation, and polymer type to regional lung deposition Journal of Environmental Exposure Assessment…
Prioritizing Dermal Absorption Models to Improve Chemical Exposure Predictions
Prioritization scheme for quantitative structure-permeability relationship (QSPR) models to predict dermal absorption of chemicals Journal of Environmental Exposure Assessment (2026) DOI:10.20517/jeea.2025.42 Authors: Ashish C. Jachak, PhD, MBA Benjamin…
OSHA’s 2025 Top 10 Workplace Citations: A Reminder of Employers’ Duty to Protect Workers
Every employer, regardless of size or industry, has a fundamental responsibility to maintain a safe and healthy workplace. Doing so requires implementing effective programs and systems to identify, control,…
Vinyl Acetate (VAM) Proposition 65 Compliance: What Businesses Need to Know Before 2026
Vinyl acetate (VAM; CAS 108-05-4) is a synthetic chemical compound, produced industrially by reacting ethylene with oxygen and acetic acid in the presence of a catalyst. During production, inhibitors are added…
OEHHA Establishes NSRLs for Respirable TiO₂ – What Does It Mean for Consumer Product Makers?
Key Takeaways: Effective October 1, 2025, California’s OEHHA establishes No Significant Risk Levels (NSRLs) for airborne, unbound, respirable titanium dioxide (TiO₂) particles, impacting manufacturers and users of TiO₂-containing products. RHP…