East Palestine Derailment: Expert Reports & Testimony
Court-filed expert reports, rebuttal reports, and deposition testimony from Case No. 4:23-cv-02206-BYP, plus EES Group's OAMF presentation. View online or download as PDF.
Our Mission
To provide superior, high quality services within a responsive time frame at a competitive rate.
Complex engineering and environmental questions, explained in plain terms.
EES Group, Inc. was founded in 1996 by Stephen E. Petty, P.E., C.I.H., C.S.P. Mr. Petty recognized the need for an engineering, expert witness, and environmental consulting firm that could take on complex, technical environments and present the findings in language that judges, juries, adjusters, and property owners can understand.
Our team holds the highest credentials in the field, including Certified Industrial Hygienist (CIH), Certified Safety Professional (CSP), and Professional Engineer (PE). The combination of our education, training, and hands-on experience makes EES uniquely qualified to respond to litigation, forensic engineering, health and safety, and environmental needs.
Our staff provide expert testimony for both defense and plaintiff counsel.
Four practice areas, one standard of rigor.
From the field investigation to the witness stand, EES Group brings engineering, industrial hygiene, and safety expertise to every engagement.
Expert Witness
Credentialed testimony, reports, and depositions for defense and plaintiff counsel.
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Forensic Engineering
Damage assessments and cause-and-origin investigations for residential and commercial structures.
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Health, Safety & Environmental
Industrial hygiene, exposure assessment, and environmental consulting for complex sites.
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Training
Education programs built on decades of real-world investigations and casework.
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EES Group, Inc., was founded by Stephen E. Petty, P.E., C.I.H., C.S.P. in 1996. Mr. Petty recognized the need for an engineering, expert witness, and environmental consulting firm that could provide services for complex and technical environments and present them in lay terms. We have achieved the highest credentials, including Certified Industrial Hygienist (CIH), Certified Safety Professional (CSP), and Professional Engineer (PE). The combination of our education, training, and experience makes EES uniquely qualified to respond to your litigation, forensic engineering, health and safety, and environmental needs. Our staff have the ability to provide testimony for both defense and plaintiff counsel.
Certified Industrial Hygienist (CIH)
Certified Safety Professional (CSP)
Professional Engineer (PE)
Latest Video
NewsNation: Report Kept From Residents Reveals Toxic Levels In East Palestine
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Forensic Engineering
by Stephen E. Petty, President
EES Group, Inc. On September 24, 2021 we released of the 2nd Edition of our newly-published textbook, Forensic Engineering: Damage Assessments for Residential and Commercial Structures, edited by Stephen E. Petty, EES Group, Inc., and published by CRC Press.
Our new 2nd edition is a compilation of knowledge gained from hands-on education, training, and experience based on over 10,000 field investigations. It is a comprehensive resource that builds a bridge between engineering disciplines and the building sciences and trades, and provides an extensive look into the world of forensic engineering. With a focus on investigations associated with insurance industry claims, this textbook describes methodologies for performing investigations that include the causation and origin of damage to residential and commercial structures and/or unhealthy interior environments and adverse effects on the occupants of these structures.
Latest News
Stephen Petty Featured on NewsNation: Withheld East Palestine Test Results Show Toxic Levels
EES Group founder and president Stephen E. Petty, P.E., C.I.H., C.S.P. is featured in a NewsNation investigative report examining environmental ...
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Pre-Storm Documentation: Protecting Property Claims Before Hurricane Season Peaks
Pre-storm documentation gives forensic engineers a dated baseline to separate hurricane damage from pre-existing conditions. Learn what a defensible record includes.
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Fire Damage Structural Property Assessments
A fire that has been extinguished is only the beginning of the evaluation process for a damaged structure. Before repairs, ...
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Synthetic Storm Damage: Spotting Fraudulent Roof Claims
Not every roof claim submitted after a storm reflects damage the storm actually caused. Synthetic storm damage — physical marks ...
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