David G. Westmoreland

Senior Scientist

David Westmoreland is a chemist (Ph.D. from Stanford University) with over 35 years of experience working in industrial chemistry. He has extensive experience in the analytical chemistry of small molecules and polymers using a variety of technologies. In a three-decade career at Rohm and Haas Company he achieved the position of Research Fellow on the technical ladder, based on many significant scientific accomplishments which contributed to business success. During that time he worked with a wide range of analytical techniques including various forms of mass spectrometry (GC/MS, MS/MS, LC/MS, MALDI), NMR, EPR, HPLC, and GC. He is highly experienced in identification of unknown molecules and trace analysis of target compounds. Dr. Westmoreland has presented invited lectures at international conferences, has published thirty-one papers, and has one patent. He has been involved with international scientific organizations (IUPAC) and international scientific collaborations.

After retiring early from Rohm and Haas, Dr. Westmoreland worked with a startup company on new biodegradable polymer technology and then worked with Nufarm Americas on analytical chemistry of pesticides and registration of technical active ingredients. His work in impurity identification and preparation of regulatory documents contributed to the successful EPA registration of numerous technical materials for Nufarm.

J. Brian Leapard

Analytical Director

Brian has been with ARC since our inception as an Analytical Chemist and has over 15 years of hands-on experience with quantitative analysis and method development. He has developed and validated most of the chromatography methods used at ARC and has been heavily involved in over 1300 GLP studies. In addition, Brian has served as Study Director in over 300 product chemistry studies. Mr.Leapard holds a B.S. in Chemistry from Wofford College and a M.S. in Chemistry from the University of Georgia where he conducted research in the area of bioanalytical chemistry. He is an active member in CPDA (Council of Producers & Distributors of Agrotechnology), NAICC (National Alliance of Independent Crop Consultants), and CSPA (Consumer Specialty Product Association) and represents ARC at each group's annual meeting and trade expositions.

Brian may be contacted by email: bleapard@arclabusa.com or by phone: 803-481-8528, ext. 5202.

Hope Wohnig

Quality Assurance Coordinator

Hope Wohnig serves as the Quality Assurance Unit at ARC with over 6 years experience in scientific document control. Hope is a member of the Society of Quality Assurance (SQA), Southern Regional Chapter Society of Quality Assurance (SRCSQA), North Carolina Chapter of the Society of Quality Assurance (NCCSQA) and the National Alliance of Independent Crop Consultants (NAICC). Hope is responsible for all in-life inspections of GLP studies, as well as all data audits and facility inspections to assure conformance with 40 CFR 160 Good Laboratory Practice Standards (FIFRA) and EPA regulations. She stays up to date on current regulations by attending conferences, seminars, and training opportunities throughout the year as well as continually reviewing the required regulations.

Summer Theus

Study Director, Analytical Chemist

Summer is a Senior Level Analytical Chemist. She is highly proficient in quantitative analysis and method development. She has ten years experience conducting regulated work under EPA and FDA Good Lab Practice Standards. This includes a position as a Regulatory Specialist where she managed pesticide product registrations.

Summer provides direction for Product Chemistry Studies at ARC with great care for detail and time management. Her unique analytical and regulatory experiences, combined, have cultivated her comprehensive understanding of the pesticide registration process from the data generation phase to the submission. Summer holds a B.S. in Chemistry (A.C.S. Certified) and a M.A.S. in Industrial Chemistry from Missouri Western State University.

Summer may be contacted by email: stheus@arclabusa.com