Our Team
Joel D. Plumley, P.E.
Founder and President of Plumley Engineering, P.C.
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Dale R. Vollmer, P.E.
Managing Engineer – Environmental Department
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Frank A. Karboski, P.G.
Senior Geologist and Manager of Geoscience Field Operations
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Julian F. Clark, P.E.
Managing Engineer – Civil Department
William J. Spizuoco, PE
Senior Engineer - Environmental Department
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David K. Meixell, P.E.
Senior Engineer – Environmental Department
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Jesse D. Plumley, P.E.
Project Engineer
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Geoffrey A. Hillenbrand, E.I.T.
Staff Engineer
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Jay J. Lee
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Matthew T. Martin
GIS Manager / Senior Environmental Scientist
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Derk T. Hudson
Geologist
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Lynne A. Hamilton-Johnson, MBA
Comptroller
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Christine A. Sykes
Office Manager / Senior Administrator / Technical Writer
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Carrie E. Price
Administrative Assistant / Assistant Technician