35 years of


We have the know-how you need.


Shield is a full-service engineering and environmental consulting firm serving industrial, municipal, commercial, and petroleum clients in the United States and abroad. Shield currently maintains offices in Lexington and Louisville, Kentucky and offers a wide range of professional engineering and consulting services including: air, soil and water site characterizations; remedial investigations and feasibility studies (RI/FS); RCRA and CERCLA investigations and corrective actions; pre-purchase Environmental Site Assessments (Phase I, II); industrial compliance consulting; petroleum (UST/AST) investigations and tank removals; and site remediation services.

Shield traces its operating history in Kentucky back to 1983, when Dr. James D. Knauss left Dames & Moore to incorporate JDK Inc. as an environmental consulting business in Lexington, Kentucky. In 1985, Dr. Knauss merged his firm with Hatcher-Sayre, Inc., a Richmond, Virginia full service environmental consulting firm. During the same time frame, Spartan Petroleum Company, Inc. of Charlotte, North Carolina created a wholly owned subsidiary (which was eventually named Shield Environmental Associates, Inc.) to conduct environmental services associated with their petroleum retail facilities. In 1993, Shield Environmental Associates of Kentucky, Inc. was created to provide environmental consulting services in Kentucky; and in 1994 Shield and the Lexington office of Hatcher-Sayre Inc. were merged to form Shield Environmental Associates, Mid-West, Inc.

In 1998, Shield acquired T.M. Regan, Inc. a Lexington based civil engineering firm and merged the firm into the Lexington, Kentucky office. In 2001, Shield Environmental Associates Midwest, Inc. (Lexington, KY) and Shield Environmental Associates Northeast, Inc. (Pittsburgh, PA) merged into Shield Environmental Associates, Inc. with its principal office located in Lexington, Kentucky. In 2006, the Principals of the firm acquired 100% ownership from all. 



Mark F. Sweet, P.G., P.L.S
Managing Principal

Mr. Sweet has accrued 30+ years of experience in the consulting field, with 30 years of extensive experience working with contaminated sites. He has performed many environmental assessments and prepared numerous.... Click to read more

Dan V. Terrell III
Senior Consultant

Mr. Terrell has extensive experience in the environmental consulting field. He has served as Managing Principal for over nine years of a multi-disciplined environmental services and consulting office. Mr. Terrell has served as.... Click to read more

C. Dow Porter
Senior Project Manager
Executive Vice President

Mr. Porter has accrued 30+ years of professional experience in the environmental field with over 16 years as an environmental consultant. He currently serves as the Executive Vice President and Chief Operating Officer.... Click to read more

Nicole R. Galavotti, P.E.
Senior Environmental Engineer

Mrs. Galavotti has accrued 20+ years of experience in environmental engineering in both an industrial manufacturing setting and as a consultant. She was responsible for the environmental department at two industrial.... Click to read more

Michael E. Morris, P.G.
Senior Professional Geologist

Mr. Morris serves Shield as a Senior Geologist and Project Manager. Currently, he is involved in the preparation of work plans, cost analyses, and remedial investigations and corrective actions for numerous sites in the United.... Click to read more

Charles Phillips, P.G.
Senior Project Manager

Mr. Phillips has 30+ years experience in the environmental consulting field, providing extensive professional experience in the investigation and remediation of various types of environmentally impacted properties.... Click to read more

Mark P. Saliga, P.E.
Senior Environmental Engineer

Mr. Saliga has accrued 30+ years of environmental consulting and engineering experience including: remedial action design and construction management for LUST projects, uncontrolled hazardous waste sites, RCRA facilities, and.... Click to read more

James D. Knauss, Ph. D
Senior Risk Assessor

Dr. Knauss served as Managing Principal-in-Charge of a multidisciplined environmental office for a large international consulting firm for over 9 years. Dr. Knauss served as the President and Managing Principal of Shield.... Click to read more


Adam Cook, CHMM
Sr. Environmental Consultant
Amy Dunagin
Amber Kittoe
Environmental Technician
Alex Sweet
Project Geologist
Christina Clasen, G.I.T.
Staff Geologist
Edward (Bo) Fisher, E.I.T.
Project Engineer
Chad Kelley
Certified Well Driller
Dan Porter, Ph.D., P.E.
Environmental Engineer
Christina Clasen, G.I.T.
Staff Geologist
Edward (Bo) Fisher, E.I.T.
Project Engineer
Mark Cross, P.G.
Project Geologist
Elizabeth Greathouse
Environmental Scientist
Scott Johnson
Environmental Scientist
Linda Lane
Administrative Assistant
Elizabeth Greathouse
Environmental Scientist
Janie Johns
Environmental Consultant
Mark Cross P.G.
Project Geologist
Jane Johns
Environmental Consultant
Mason Porter
Environmental Technician
Wes Cobb
Certified Wastewater Treatment Operator
Shane Wise
Auto-CAD Specialist
Scott Johnson
Environmental Scientist

Shield Environmental Associates, Inc.

948 Floyd Drive 

Lexington, KY 40505


(859) 294-5155

12600 Townepark Way 

Louisville, KY 40243


(502) 493-0305

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**Note: All engineering services in North Carolina will be performed by Shield Environmental Engineering Partners, Inc.

© 2019 by Shield Environmental Associates.