Gradient

Senior Scientists

Heather N. Lynch, M.P.H.
Email VCard Bio

Education

M.P.H., Environmental Health, Boston University School of Public Health

B.A., Environmental Studies, Knox College

Expertise

  • Human Health Risk Assessment
  • Indoor/Outdoor Air Quality
  • Toxicology
  • Epidemiology
  • Public Health

Heather N. Lynch, M.P.H.

Senior Toxicologist

Email VCard Bio

Ms. Lynch is an environmental health scientist and toxicologist with extensive experience in human health risk assessment of chemicals in consumer products and the environment.  Her primary responsibilities at Gradient include critical review of toxicology and epidemiology studies for regulatory comment, human health risk assessment, and litigation project support.  She has been heavily involved in assessments of NAAQS pollutants, primarily ozone and particulate matter.  Before joining Gradient, Ms. Lynch was a human health and toxicology consultant at ICF International where she worked predominantly on large, chemical-specific risk assessments for several programs within the US EPA National Center for Environmental Assessment.  While receiving her M.P.H., Ms. Lynch worked as a research assistant on an exposure assessment of indoor air contaminants in offices.

Education

M.P.H., Environmental Health, Boston University School of Public Health

B.A., Environmental Studies, Knox College

Expertise

  • Human Health Risk Assessment
  • Indoor/Outdoor Air Quality
  • Toxicology
  • Epidemiology
  • Public Health

Services

Representative Projects

Superfund Site Risk Assessment:  Prepared report for expert testimony on the risks of exposure to dioxins and furans at a superfund site.  Primary effort included summarizing historical animal and epidemiological data on dioxins for state-of-knowledge assessment, and evaluating the methodology of existing risk assessments for the site.

Epidemiological Study Review:  Reviewed and critiqued numerous epidemiological studies on dioxin-like compounds, pentachlorophenol, and benzene for expert report; assisted in evaluating the weight of evidence of numerous cancer and non-cancer effects in humans.

Health Effects Literature Review:  Reviewed and summarized the literature on the association between lead exposure and reproductive and developmental health effects, assisted in deposition preparation and response, and provided support during the trial.

Regulatory Comments:  Provided a critical review of the science, specifically focusing on the epidemiological evidence, for the association between ambient ozone exposure and mortality and morbidity.

Industry Consortium:  Assisted with a weight-of-evidence analysis of the cardiovascular effects of short-term ozone exposure.  Presented preliminary results in a poster at the annual meeting of a professional organization for epidemiologists.

Selected Publications

Lynch, HN; Kerper, LE; Seeley, M; Beck, BD.  2016. "Dietary Intake of Perfluorooctane Sulfonate (PFOS) and Implications for Drinking Water Limits." Presented at the Society of Toxicology (SOT) 55th Annual Meeting, New Orleans, LA, March 13-17

Kerper, LE; Lynch, HN; Zu, K; Tao, G; Utell, MJ; Goodman, JE.  2015. "Systematic review of pleural plaques and lung function." Inhal. Toxicol. 27 : 15-44.

Sidhu, MS; Desai, KP; Lynch, HN; Rhomberg, LR; Beck, BD; Venditti, FJ.  2015. "Mechanisms of action for arsenic in cardiovascular toxicity and implications for risk assessment." Toxicology 331 : 78-99.

Lynch, H; Tumpney, M; Beck, B.  2015. "Exposure Measurement Error and the Impact of Nutrition in Studies of Inorganic Arsenic and Cardiovascular Endpoints." Presented at the Society of Toxicology (SOT) 54th Annual Meeting, San Diego, CA, March 22-26

Goodman, JE; Prueitt, RL; Sax, SN; Lynch, HN; Zu, Ke; Lemay, JC; King, JM; Venditti, FJ.  2014. "Weight-of-evidence evaluation of short-term ozone exposure and cardiovascular effects." Crit. Rev. Toxicol. 44 : 725-790.

Lynch, HN; Greenberg, GI; Pollock, MC; Lewis, AS.  2014. "A comprehensive evaluation of inorganic arsenic in food and considerations for dietary intake analyses." Sci. Total Environ. 496 : 299-313.