Consulting, evaluation and research services in the fields of human and environmental toxicology and pathology; environmental toxicology and pathology, namely, hazard identification, toxicity evaluation, exposure modeling, quantitative risk assessment, expert witnessing in environmental pollution cases, public consultation and risk communication, environmental site assessment, risk assessment of remediation alternatives, source identification using contaminant fingerprinting, environmental contaminant pathology; general toxicology and pathology, namely, pharmaceutical permitted, expert witnessing in criminal cases, experimental pathology, contamination liability investigations for insurance purposes, experimental design, research program management; regulatory toxicology, namely, rationale development for health-based regulation, interpretation of health-based regulations, quality assurance/quality control and peer reviews, compliance reviews, occupational health Consultation and investigative services in the area of design failure, litigation support, forensic engineering, and the assessment of mechanical involvement in relation to sick building syndrome