City Department Heads

Gina Holt, Assistant City Manager

Regina Holt


Interim City Manager 
P. 615-382-2200


Regina has over 30 years of government and management experience, including the U. S. Senate, White House and State Department in Washington, DC.  Her human resources background covers more than 35 years.  Regina received her Bachelor of Science degree in Business Administration from The University of Tennessee, and she has been with the City of Springfield for over 20 years. She is a member and Past President of the Tennessee City Management Association (TCMA) and a member of the International City/County Management Association (ICMA).  She is a past board member of the Tennessee Municipal League (TML) and Leadership Middle Tennessee, and she is currently serving as a board member of the TML Risk Management Pool. 

Lisa Crockett, City Recorder and Finance Director

Lisa Crockett, CPA CMFO
Director of Finance/City Recorder
P. 615-382-2200


Lisa became Director of Finance/City Recorder in October 2014.  She brings more than 23 years of accounting experience in both public accounting and private industry.  Lisa received her Bachelor of Business Administration in Accounting degree from Texas A&M University.  She is a Certified Public Accountant (CPA) and maintains licenses in Tennessee and Texas.  She is a member of the Tennessee Government Finance Officers Association, the Government Finance Officers Association, and the Tennessee Society of CPAs.

Grant Green.jpg
Grant Green
Planning Director

P. 615-380-8700

Grant became Planning Director in January 2016 and is the department head for the Community Development Department.  He graduated from Murray State University with a Bachelor of Science degree in Geoscience/GIS.  He has over 12 years of experience in planning and local government, including the Purchase Area Development District in Mayfield, KY and City Planner for La Vergne, TN.  Grant was previously the Chief of Research and GIS Manager for the Greater Nashville Regional Council.  He is a member of the Tennessee Chapter of the American Planning Association (TAPA) and the Tennessee Geographic Information Council (TNGIC).


Robert Gardner, Director of Electric Department
Robert Gardner
Electric Utility Director
P. 615-384-6770

Robert has worked in electric utility management and engineering for more than 26 years.  He started with the Springfield Electric Department in 1990 as the Electrical Engineer and was promoted to Electric Utility Director in 1995.  Robert is a Springfield native and graduated from Springfield High School.  He holds a Master of Business Administration degree from Trevecca Nazarene University and Bachelor of Science degree in Electrical Engineering from Tennessee State University. Robert serves as a board member and is a Past President of the Tennessee Municipal Electric Power Association (TMEPA), and is a board member and Past President of the Tennessee Electric Power Acquisition Corporation (TEPAC).  He serves as a board member of the Central District Managers Association (CDMA) and the Middle Tennessee Industrial Development Association.  Robert also serves on the Executive Board of Realizing Robertson’s Future.  He is a member of the Tennessee Valley Public Power Association (TVPPA) and the American Public Power Association (APPA).


David Brewer, P.E., City Engineer and Director of Engineering
David Brewer, P.E.
City Engineer
P. 615-382-5250

David became City Engineer in March of 1997.  He has over 25 years of municipal engineering and planning experience. Before joining the City of Springfield, he worked for the Johnson City Water and Sewer Department for 7 years as a Design and Maintenance Engineer.  David is a graduate of Springfield High School and holds a Bachelor of Science in Civil Engineering degree and a Bachelor of Science in Biology degree from Tennessee Technological University.  He is a licensed Professional Engineer (P.E.) in the State of Tennessee and is an active member of the Tennessee Section of the American Society of Civil Engineers (ASCE) and the Tennessee Society of Professional Engineers (TSPE).  David was presented the Government Engineer of the Year Award in 2014 by the Tennessee Section of the American Society of Civil Engineers. 


Chief Jimmy Hamill, Fire Department
Jimmy Hamill
Fire Chief
615-384-4381

Chief Hamill’s fire service experience spans more than 39 years with the Springfield Fire Department.  He has been steadily promoted through the ranks and was appointed Fire Chief in 2012.  Jimmy is a graduate of Springfield High School and is a Certified Fire Officer II with the Tennessee Commission on Fire Fighting.  He is also a Certified Hazardous Materials Technician through the Tennessee Hazardous Materials Institute and a Certified Emergency Vehicle Extrication Technician through the Tennessee Association of Rescue Squads.  Jimmy is licensed by the Tennessee Department of Health to practice as an Emergency Medical Responder.  He is a member of the Tennessee Fire Chiefs Association and the International Association of Fire Chiefs.  Jimmy’s son Kyle Hamill is the Fire Chief in the neighboring community of Greenbrier.


Greg Riddle, Director of Gas Department
Greg Riddle
Gas Utility Director
P. 615-382-1621

Greg started his career with the Springfield Gas Department in 1991 as the Gas Measurement Technician and has more than 23 years of experience in natural gas distribution operations.  He was appointed to the position of Gas Utility Director in 2013 after having served as Gas Distribution Superintendent since 2008.  Greg holds a Bachelor of Applied Science in Business Administration-Management degree from Peru State College, Nebraska and an Associate of Applied Science in Electronics Engineering Technology degree from ITT Technical Institute, Nashville. He grew up in Robertson County and graduated from Greenbrier High School.  Greg serves on the Board of Directors of the Tennessee Energy Acquisition Corporation (TEAC) and is the organization’s Secretary.  He is a member of the Tennessee Gas Association (TGA), the American Public Gas Association (APGA), and the National Association of Corrosion Engineers (NACE).  


Martin Terry
Terry Martin
Director of Parks and Recreation
P. 615-382-1655

Terry has been with the Parks and Recreation Department since 1995.  He started in grounds maintenance and rose through the ranks to become Director of Parks and Recreation in April of 2016.  Terry has more than 21 years of experience in all aspects of parks and facilities maintenance, as well as recreational programming and athletic league administration.  Terry is a member of the Tennessee Parks and Recreation Association (TRPA) and received TRPA certification in Maintenance Management.  He has served as the Dixie Softball District Director since 2013.


Chief David Thompson
David E. Thompson
Police Chief
P. 615-384-8422

Chief Thompson’s law enforcement and municipal government experience spans more than 37 years, including approximately 25 years as the Chief of Police/Director of Public Safety in Atlantic Beach, Florida.  David became Springfield’s Chief of Police in January 2012.  He received his undergraduate degree from Florida State University, and his Master of Science in Criminal Justice degree from the University of North Florida.  David has been an instructor for more than 35 years; and he has more than 20 years of experience teaching at the college level.  He has authored articles for law enforcement periodicals on the topics of leadership, cyber security, and police corruption.  David is a member of the Tennessee Association of Chiefs of Police and a Life Member of the Florida Police Chiefs Association. 


Allan Ellis, P.E., Director of Public Works
Allan Ellis, P.E.
Director of Public Works
P. 615-384-2746

Allan has more than 41 years of civil engineering experience in both the private and public sectors.  He became Director of Public Works in 1990 after having worked for the Tennessee Department of Transportation in various positions for a period of nearly 9 years.  Allan is a native of Springfield and graduated from Springfield High School.  He holds a Bachelor of Science in Civil Engineering degree from the University of Tennessee.  Allan is both a state of Tennessee licensed Professional Engineer and a licensed Land Surveyor.  He is a former board member of the Tennessee Public Works Association, and is a member of the American Public Works Association, the Tennessee Society of Professional Engineers, and the Tennessee Association of Professional Surveyors.


Roger Lemasters, P.E., Director of Water/Wastewater Department
Roger Lemasters, P.E.
Director of Water/Wastewater
P. 615-382-1600

Roger became Director of Water/Wastewater Utilities in December 2003 after having worked for the Tennessee Department of Environment and Conservation (TDEC) in various capacities over a career span of more than 30 years.  His last position was that of Chief Engineer for the Division of Water Pollution Control.  Roger is a licensed Professional Engineer in the state of Tennessee, as well as a Certified Value Engineer.  He earned a Bachelor of Science in Civil Engineering degree, with a focus in environmental engineering, from Oklahoma State University and has taken graduate level courses in civil engineering at Tennessee Technological University.  Roger is a member of the American Water Works Association and the Water Environment Federation.  He is a veteran of the United States Army.