Name: Darby W. Hittle, L.E.P.
Title: Founder / Principal

Name: Angelo Signore

Title: Environmental Scientist

our team

Thunderbird Environmental, LLC is a 100% Service Disabled Veteran Owned Business (SDVOB) that was founded by

Mr. Darby Hittle.  Mr. Hittle possesses nearly 25 years of experience performing Environmental Assessments (EAs), Water Quality Evaluations, Subsurface Investigations, Site Remediation, and Feasibility Studies throughout North America.  Thunderbird's leadership and staff are well versed in a wide range of regulatory programs to assist our clients with their specific project needs.   

Jean Vossler

Jean Vossler is a Project Manager within the site assessment and remediation oversight group at Thunderbird. Jean is a 2002 graduate of Old Dominion University of Norfolk, Virginia where she earned a bachelor's degree in zoology.  Jean went on to earn a master's degree in ecology, from the University of New Haven in Connecticut, in 2010. Jean is also a certified wetland delineator.

A Connecticut native, Jean now lives with her husband in Westbrook, Connecticut. When she's not hard at work with the Thunderbird team, Jean enjoys her time off by hiking, camping, playing board games, and even attending Comic-Con with family. Jean tries to spend as much time as possible enjoying patio-life or sitting in front of a fire pit with a cold beer in hand (as long as it isn’t an IPA).

Company Leadership

Darby W. Hittle

Darby Hittle is a Licensed Environmental Professional (LEP) with more than 25 years experience providing environmental site assessment, remediation design and oversight, and regulatory compliance assistance to a wide range of private and federal clients throughout North America.  Darby is a 1995 graduate of Bloomsburg University of Pennsylvania, where he earned a B.S. in Geology. 

Darby is Veteran of the United States Air Force, where he served as a fire protection specialist assigned to Air Force One from 1988 to 1990, and as a civil engineer/fire protection specialist in Panama from 1986 to 1988.  

When he's not helping one of Thunderbird's many clients with environmental issues, Darby can likely be found on a cold water stream casting a trout fly, playing guitar, or planning the next western fishing or hunting adventure.  Growing up in the small farming community of Benton, Pennsylvania, Darby developed an early understanding of the need for responsible use of our natural resources.  Thunderbird Environmental is named after a neighbor's dairy farm, where Darby spent much of his boyhood life exploring the local streams, fields, and forests and discovering the small wonders that exist within nature.

Name: Jean Vossler

Title: Project Manager


​​​Lauren Lomax

Lauren is a Project Manager at Thunderbird with 7 years of experience in the environmental consulting industry.  Lauren’s specialties include site assessment and characterization, regulatory compliance reporting and management of project tasks and deliverables.  Born on Sweptwing Farm in Ann Arbor, Michigan, Lauren has a love for horses and connecting with the natural world.  She is a Connecticut transplant, and possesses a bachelor’s degree in environmental geology from Georgia State University and a master’s degree in environmental science from the University of New Haven.
Lauren resides in Milford, CT with her husband, two step kids and rambunctious toddler. She enjoys hiking, traveling, and spending time with friends and family.

Name: Dawn Hittle
Title: Director of Business Affairs

Cedar Hittle

Cedar is an Environmental Field Technician at Thunderbird with approximately four years of field experience. Cedar specializes in drilling oversight, soil and groundwater sampling, and drafting support for the Thunderbird team.  When not in the field, Cedar assists Thunderbird with its web management and IT needs.  Cedar is a Junior at Champlain College in Burlington Vermont, where he is a Broadcast Media major.  In his spare time, Cedar enjoys boating on Long Island Sound, riding his long board, playing video games, and buying the latest cold drink at CVS.  

(860) 227-4714

Name: Cedar Hittle

Title: Environmental Field Technician and  Communications/Web Design Assistant​

Angelo Signore

Angelo has been an Environmental Scientist with Thunderbird since January 2020.  He is a Connecticut native.  He graduated from the University of Connecticut with a Bachelor's Degree in Biology and Geography, with minors in Ecology and Evolutionary Biology. Prior to joining Thunderbird, Angelo worked with the U.S. Fish and Wildlife as an intern and volunteer, as a Student Research Assistant at UCONN and completed an internship with American Medical Response as an Emergency Medical Technician.  Angelo enjoys being outdoors, camping, boating, playing basketball, writing and recording music and spending time with his family and friends.

Name: Lauren Lomax

Title: Project Manager


Dawn Hittle

Dawn has been with Thunderbird Environmental since its inception in 2014. She spent many years with Wal-Mart, helping them get a foot hold in New England by assisting in the opening and running of many stores. Now, Dawn is helping Thunderbird Environmental take flight. Having been raised in the Air Force, she has lived all over the world including Japan, Hawaii, MI, CA, SC, NJ, WY and ending in PA where she received her B.S. in Business from Wilkes College and then her M.B.A. from Bloomsburg University.

Dawn spends much of her free time with her husband, two kids, and two dogs. She also enjoys the beach, boating, biking, reading, movies and way too much television.