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Karen Hathaway

Senior Toxicologist

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Karen Hathaway has more than 26 years of experience with projects involving environmental compliance and risk assessment. She evaluates environmental conditions to determine if they are protective of human health and the environment. She also prepares risk assessments, air and water discharge permit applications, conceptual site models, hydrogeological investigation work plans, and remedial action plans.

Karen has used her knowledge of environmental toxicology and regulations in the preparation of vapor intrusion assessments, Resource Conservation and Recovery Act (RCRA) permit applications, RCRA corrective action plans, RCRA closure plans, hazard-ranking evaluations, hazard identification training programs, site assessments, compliance audits, groundwater discharge permits, pre-demolition assessments for large industrial facilities, and development of environmental hazard-screening programs for governmental units. Prior to joining Barr, she served as senior project toxicologist and project manager at Horizon Environmental Corporation.


(616) 512-7015


MS, Environmental Chemical & Toxicology, University of Wisconsin - Madison

BA, Biology, Kalamazoo College


Barr Engineering Co.
4771 50th Street SE
Grand Rapids, MI 49512

Phone: 616-512-7000
Fax: 616-554-3211
Toll free: 800-632-2277