Mark Lenz, Ph.D.
Managing Scientist
Chemical Regulation & Food Safety
  • District of Columbia

Dr. Lenz has more than 30 years of experience in the agrochemical industry in the areas of product stewardship, identifying data requirements for pesticide registration, and conducting laboratory and field studies. His areas of expertise include environmental fate, soil and water metabolism, and field monitoring.

Dr. Lenz's experience includes conducting and managing projects related to aerobic and anaerobic soil and aquatic metabolism, soil column leaching, adsorption/desorption, hydrolysis, fish bioaccumulation, water solubility, greenhouse plant metabolism, and confined rotational crop studies. His extensive field experience includes conducting and managing programs related to terrestrial and aquatic field dissipation, buffer strip effectiveness/runoff, drinking water monitoring, retrospective and prospective groundwater monitoring, and soil monolith lysimeter studies.

Dr. Lenz was a participant on corporate project and asset business planning teams that monitored project timelines and insured that registration requirements were successfully met. He is experienced in agricultural product development and electronic preparation of environmental fate dossiers and tier summaries. Dr. Lenz assisted in the preparation of joint review submissions between EPA, PMRA, and/or EU, and was responsible for registrant technical stewardship of several products with EPA (State and Federal) and PMRA. He has prepared and presented technical documents to regulatory authorities and directly responded to questions from those authorities. He also was a representative on the terrestrial field dissipation industry work group.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Pharmaceutical Science, University of Missouri, Kansas City, 1987
  • B.S., Biology, University of Missouri, Kansas City, 1977
  • Recipient, Silver Laureate Award, Bayer CropScience, 2008

    Recipient, Above and Beyond Awards, Bayer CropScience, May and October, 2004

    Recipient, Innovation Award, Bayer CropScience, 2003

    Member, Rho Chi, The Academic Honor Society for Pharmacy, 1984

Publications

Wade JM, Lenz MF, Netzband DJ, Harlan D. A LC/MS/MS method for the detection of penflufen residues in an aquatic dissipation study using rice seeds treated with penflufen. Florida Pesticide Conference, 48th Annual Florida Pesticide Residue Workshop (FPRW), July 17–20, 2011.

Sabbagh GJ, Fox RM, Lenz MF. Revised framework for pesticide aquatic environmental exposure assessment that accounts for vegetative filter strips. Environmental Science and Technology 2010; 44(10):3839–3845.

Kaune A, Fliege R, Lenz M, Ripperger R. Fate of pyrasultotole in the environment. Pflanzenschutz Nachrichten Bayer 2008; 1.

Fisher JM, Lenz MF, Allen R, Ramanarayanan TS. Calculation of temperature referenced half-lives from terrestrial field dissipation studies. National American Chemical Society Meeting, Anaheim, CA, March 28–April 1, 2004.

Jones RL, Barefoot AC, Belyk M, Francis P, Hendley P, Jackson S, Lenz M, Purdy J, Van Wesenbeeck I. Suitability of field data for determining degradation rates in environmental risk assessments. National American Chemical Society Meeting, Anaheim, CA, March 28–April 1, 2004.

Lenz M. Environmental fate of flucarbazone-sodium. Pflanzenschutz Nachrichten Bayer 2002; 2.

Gaynor JD, Lenz MF, Damon A, Ward S. The role of field dissipation studies in support of pesticide registration. Canadian Society for Chemistry Conference, May 27–31, 2000.

Lenz MF, Hansen-Johnson J. Two soil monolith lysimeter designs for studying the fate and transport of plant protectants. National American Chemical Society Meeting, Washington D.C. August 20–24, 2000.

Lenz MF, Baker F. Fate of disulfoton in a California soil lysimeter study. National American Chemical Society Meeting, Washington D.C., August 20–24, 2000.

Bloomberg A, Cink J, Dyer D, Fischer J, Lenz M, Neussle C, Philpot D, Pangilinan N. Evaluation of half-lives of Bayer Crop Protection Chemicals from laboratory soil metabolism and field dissipation studies using first-order linear and non-linear regression analysis. National American Chemical Society Meeting, Anaheim, CA, March 21–25, 1999.

Lenz M, Joseph H. Comparison of installation methods and sampling performance for two types of suction lysimeters in a small-scale prospective groundwater monitoring study. Society of Environmental Toxicology and Chemistry, San Francisco, CA, November 16–20, 1997.

Lenz MF, Clay VE. Soil sampling and monitoring well installation procedures for pesticides at hazardous waste research, Durland Hall, Manhattan, KS, May 29–30, 1991.

Professional Affiliations

American Chemical Society—ACS (since 1987)

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Pharmaceutical Science, University of Missouri, Kansas City, 1987
  • B.S., Biology, University of Missouri, Kansas City, 1977
  • Recipient, Silver Laureate Award, Bayer CropScience, 2008

    Recipient, Above and Beyond Awards, Bayer CropScience, May and October, 2004

    Recipient, Innovation Award, Bayer CropScience, 2003

    Member, Rho Chi, The Academic Honor Society for Pharmacy, 1984