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

Name: Ryan McKay
Title: Staff Geologist

​​​Ryan McKay

Ryan is a Staff Geologist on Thunderbird team of environmental professionals and he hails from Meriden, Connecticut.  Ryan is a 2017 graduate of the University of Connecticut, where he earned a Bachelor's Degree in Geoscience.  Ryan hails from Meriden, Connecticut and when he's not performing field work or tabulating environmental data at Thunderbird, he can likely be found hiking one of the many trails throughout New England.  


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, two dogs and an eight-year old goldfish that “just keeps swimming”, which is a favorite quote from which she takes much inspiration. She also enjoys the beach, biking, reading, movies and way too much television.

Cedar Hittle

Cedar is an Environmental Field Technician at Thunderbird with approximately three 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 recent graduate of the Morgan School in Clinton Connecticut, and will be attending Champlain College in Burlington Vermont beginning in August 2018, where he plans to study Video Game Design.  Cedar is looking forward to meeting new people and experiencing new places over the next four years.

Name: Cedar Hittle

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

Company Leadership

Darby W. Hittle

Darby Hittle is a Licensed Environmental Professional (LEP) with more than 22 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.

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 20 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.   

Name: Dawn Hittle
Title: Director of Business Affairs

Name: Jean Vossler

Title: Project Manager

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).