Project Assistant and Office Manager Renee Sweeney has been with CORE since 2004 and assists the project teams by compiling all types of technical [...]
Ryan Ziegler
core-jbirch2024-01-19T14:55:38-05:00Field Technician Ryan Ziegler is a Field Technician at CORE Environmental Services, Inc. He attended Slippery Rock University, graduating with a Bachelor of Science [...]
Calla Solomon
core-jbirch2023-05-26T11:19:16-04:00Field TechnicianCalla Solomon is a field technician at CORE Environmental Services, Inc. She attended West Virginia University where she received her B.S. in Environmental Soil [...]
Daniel Petruski
core-jbirch2023-05-26T10:59:17-04:00Staff Scientist Dan is a Staff Scientist in CORE’s Environmental Compliance Division. He is involved with routine reporting services and quality control. He attended [...]
Ireland Killen
core-jbirch2023-05-26T11:00:09-04:00Staff Scientist Ireland Killen is a Staff Scientist at CORE Environmental. She attended California University of Pennsylvania where she received her B.S. in Geology. [...]
Sandy Zbur
core-jbirch2020-12-03T09:45:07-05:00Benefits & Payroll Administrator/ Billing Specialist Sandy began working at CORE shortly after it was founded in 2001. Over the years, her position and [...]