Board of Directors
Ms. Erin E. Parrish, PhD, President
Mr. Brandon R. Parrish, P.E., Vice President – Engineering
Mr. Shane M. Rader, P.E., Drilling Services Manager
Mr. Donald C. Nowack, P.E., R.G., Environmental Services Manager
Ms. Erin Parrish, PhD
Dr. Parrish assumed the role of President in January 2021, after serving as Vice President of Administration since 2019 and Company Administrator since joining the Company in 2017. Dr. Parrish manages PPI’s business operations, including contracts, risk management, safety, insurance, accounting, human resources, and information technology.
Prior to joining PPI in 2017, Dr. Parrish worked in the field of Higher Education for over a decade. Dr. Parrish graduated from Missouri State University with a Bachelor of Science in Biology and a Master of Natural and Applied Science, and earned a Doctor of Philosophy in Higher Education Administration from Saint Louis University. Dr. Parrish is a Willard High School graduate and enjoys living and working in the community where she grew up.
Mr. Brandon R. Parrish, P.E.
Vice President – Engineering
Mr. Brandon Parrish, P.E. serves as PPI’s Vice President and Geotechnical Engineering Manager. Mr. Parrish manages PPI’s Geotechnical Engineering and Construction Materials Testing Services. He has particular expertise with Subsurface Investigation, Geotechnical Laboratory Testing, Shallow and Deep Foundation Design, Sinkhole Evaluation and Remediation, and Pavement Evaluation and Design.
Mr. Parrish joined PPI as a full-time employee in 2006 after earning his Bachelor of Science and Master of Science in Civil Engineering from the University of Missouri (Geotechnical Emphasis). Mr. Parrish is a graduate of Willard High School, and has been involved with the Company business for most of his life. He has served as PPI’s Vice President and Geotechnical Manager since 2013.
Mr. Parrish is proud of PPI’s reputation for helping Clients solve problems, and is dedicated to growing the expertise of PPI’s engineering, geologist, and technician staff to serve our Clients in the A/E/C Industry. He is involved with the Missouri Society of Professional Engineers (MSPE), and served as a former President of the MSPE Ozark Chapter. Mr. Parrish maintains a Professional Engineering license in the States of Missouri, Kansas, Oklahoma, Texas, Iowa, Louisiana, Mississippi, West Virginia, Colorado, and Wyoming.
Brandon lives in Willard, Missouri, with his wife Erin and two children.
Mr. Shane M. Rader, P.E.
Drilling Services Manager
Mr. Shane M. Rader, P.E. joined PPI in 2002 after graduating from the Missouri University of Science and Technology with a Bachelor of Science degree in Geological Engineering. Mr. Rader is a graduate of Lebanon High School, and has established his family in Republic, Missouri.
Mr. Rader has worked as PPI’s Drilling Services Manager since 2006, and has developed an unmatched knowledge of the subsurface geology in the Region. The resources and capabilities of PPI’s Subsurface Drilling Department have grown tremendously under Mr. Rader’s leadership, making PPI well-equipped to respond to almost any request for subsurface exploration.
Mr. Rader is a licensed Professional Engineer in the State of Missouri. Mr. Rader is involved with the Missouri Society of Professional Engineers, has served as an officer of the Ozark Chapter of Professional Engineers in Private Practice, and was a member of the 2014 American Council of Engineering Companies (ACEC) Missouri Future Leaders Academy. Mr. Rader is a member of the National Drilling Association (NDA), a licensed drilling/pump operator in Oklahoma, and maintains a restricted Missouri Well Driller’s License.
Mr. Donald C. Nowack, P.E., R.G.
Environmental Services Manager
Mr. Donald C. Nowack, P.E., R.G. has managed PPI’s Environmental Services Department since joining the Company in 2007. Mr. Nowack is an Ozark, Missouri native and a graduate of Ozark High School. Mr. Nowack received a Bachelor of Science in Geology from Missouri State University in 1997 and a Bachelor of Science in Geological Engineering from the Missouri University of Science and Technology in 2003.
Mr. Nowack has broad knowledge of the Environmental Services field, and particular expertise in areas including Phase I and Phase II Environmental Site Assessments, Missouri Risk Based Corrective Action Assessments, Subsurface Exploration, Groundwater Monitoring, and Geologic Assessments. Mr. Nowack supervises PPI’s geologist staff, and completes numerous geologic evaluations, karst investigations, and sinkhole evaluations each year.
Mr. Nowack is a licensed Professional Engineer and Registered Geologist in the State of Missouri. His credentials include an Asbestos Inspector License in the State of Missouri, and involvement with the Missouri Society of Professional Engineers and Professional Engineers in Private Practice.