Consultation and research services in the fields of human and environmental toxicology and pathology; laboratory research in the field of environmental toxicology and pathology, namely, hazard identification, toxicity evaluation, exposure modeling, quantitative risk assessment, consulting services in the field of environmental pollution, namely, risk communication, environmental site assessment, risk assessment of remediation alternatives, source identification using contaminant fingerprinting, environmental contaminant pathology; insurance claims investigation services in the field of pollution contamination liability investigations; expert witness services in the field of environmental pollution; reviewing standards and practices to assure compliance with toxicology regulations, namely, rationale development for health-based regulations, interpretation of health-based regulations, quality assurance/quality control and peer reviews, compliance reviews, occupational health; consultation and insurance claims investigative services in the field of design failure, litigation support, forensic engineering, and the assessment of mechanical involvement in relation to sick building syndrome