T.G. Miller, P.C. follows a team approach, encouraging close working relationships with clients to deliver high-quality workmanship regardless of project size and budget. Our licensed staff includes four Professional Engineers, three Professional Land Surveyors and one LEED Accredited Professional.
All of our professionals reside locally and have a keen awareness of local concerns and government practices. We recognize the need for accessible civil engineering and land surveying services and are able to address client concerns in a timely manner.
We are a local business compromised of local people committed to providing quality service to our community.

T.G. Miller, P.C. follows a team approach, encouraging close working relationships with clients to deliver high-quality workmanship regardless of project size and budget. Our licensed staff includes five Professional Engineers, two Professional Land Surveyors and one LEED Accredited Professional.
All of our professionals reside locally and have a keen awareness of local concerns and government practices. We recognize the need for accessible civil engineering and land surveying services and are able to address client concerns in a timely manner.
We are a local business and local people committed to providing quality service to our community.

Team TGM
Click staff name for contact information and a little personal info.

Owen B. Barden, P.E.

Rachael L. Barnhart

Justin S. Blomquist

Darrin Brock, L.S.

Licensed Surveyor/Crew Chief

Jacqueline L. Dresser, L.S.

Lee Dresser, L.S.

Vice President/Principal Surveyor
ld@tgmillerpc.com
607-272-6477 x 227

Marcus Haider
Construction Administrator
MWH@tgmillerpc.com
607-272-6477 x225
As a Construction Administrator, Marcus is responsible for assisting in the development of plans and specifications for projects through constructability reviews and cost estimates. Marcus also serves as a conduit for communication between engineers and contractors by reviewing submittals, answering RFI’s, performing scheduled SWPPP inspections, and conducting field observations during the construction phases of projects. Marcus has been employed by the firm since May of 2022, and comes in everyday eager to learn under the guidance of senior team members.
Little Known Fact: Marcus is an avid pool player and is part of the APA pool league.

Donald (Dondi) M. Harner, P.E., LEED® A.P., C.P.E.S.C.

Vice President/Principal Engineer
dmh@tgmillerpc.com
607-272-6477 x 233

David Herrick, P.E.


Amie L. Jaramillo

Administrative Assistant
alj@tgmillerpc.com
607-272-6477 x 220

Sawyer Johnson

Surveyor's Apprentice
shj@tgmillerpc.com
607-272-6477 x 235
Sawyer Johnson is currently a Surveyor’s Apprentice, who’s duties include deed research, file organization, and assistance with anything that needs done in the office. He looks forward to learning more about the area and community while contributing to surveying efforts. He went to The University of Rochester, where he earned a B.S. in the field of Environmental Science in 2016. During his university studies, Sawyer also investigated methane dynamics of the Great Lakes in Dr. John Kessler’s Oceanography Lab.
Little Known Fact: Prior to working with TG Miller, Sawyer raised sea urchins for the State of Hawaii as a biocontrol method for invasive seaweed.

Patrick King, E.I.T, CPESC I.T.

Civil Engineer
pjk@tgmillerpc.com
607-272-6477 x 260
Patrick King joined the firm in June 2021 as a Civil Engineer. Patrick is from Newfield, New York where he graduated high school in 2017. During his senior year of high school, he participated in the New Visions Life Sciences program at Cornell where he did research and interned with Tompkins County Soil and Water Conservation District (SWCD). This experience led him to major in Environmental Resources Engineering with a focus on Water Resources at SUNY ESF. During his college breaks, Patrick worked as a Conservation Technician at SWCD and on the side for his father’s concrete construction company.
Patrick completed his Bachelor of Science Environmental Resources Engineering from SUNY ESF in 2021. Patrick serves as a member on the Tompkins County Water Resources Council, and is an FAA certified drone pilot. In his spare time, he enjoys trail running, fishing, and hiking in the Adirondacks.
Little Known Fact: Patrick has completed five marathons, including one 40-mile ultramarathon.

Mikel "Mike" S. Mosher

Surveyor’s Apprentice
msm@tgmillerpc.com

Karen Poole
Finance Manager
kdp@tgmillerpc.com
607-272-6477 x 221
As Finance Manager, Karen is involved with the day-to-day financial and accounting processes in the firm, including managing the payroll. She also provides management information and analysis for the Officers to assist in decision- making. Her role encompasses reviewing the systems and procedures around reporting and project management to facilitate improvements and enhancements to the business operations. Karen has been utilizing her skills to assist the firm since 2022.

Frank L. Santelli, P.E.
Vice President/Project Manager
fls@tgmillerpc.com
607-272-6477 x 234