Surveying & Mapping

Surveying since 1885

We focus our expertise on traditional surveying methods, as well as electronic measuring, photogrammetric mapping and other state-of-the-art methods.

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Civil Engineering

Extensive expertise

We service all aspects of civil engineering including stormwater management, erosion control plans, floodplain studies and highway occupancy permits.

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Land Planning

Turning your vision into reality

Whether it's subdivision plans, estate planning, sewage plans, or site feasibility analysis, we offer the guidance and experience that provides peace of mind.

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Diehm & Sons

View our Portfolio to see a sampling of our projects.

Diehm & Sons Staff

At Diehm & Sons, we offer the personalized level of attention that you want and deserve, in addition to being fully licensed and insured as surveyors and civil engineers. We consider ourselves members of your team, seeking a successful outcome for your project. All professionals on staff hold an average of 15 years of experience in surveying or civil engineering.

Timothy D. Diehm, P.L.S.
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Timothy D. Diehm, P.L.S.
President

Joined Diehm & Sons in May 1980  (worked summers and school breaks since 1970

Areas of Specialty:
All aspects of Business Management
Licensed Professional Land Surveyor in Pennsylvania
Owner / President since April 1, 1995

Education:
Associates Degree in Engineering – Surveying Technology
Penn State University - Mont Alto Campus

Community Involvement:
Member, Trinity Evangelical Congregational Church, Lititz, PA

Associations:
Pennsylvania Society of Land Surveyors
Pennsylvania Association of Professional Land Surveyors
Lancaster County Builders Association
Lancaster Chamber of Commerce and Industry
Penn State Alumni Association – Life Member


Kevin Varner, P.E.

Kevin Varner, P.E.
Director of Engineering

Joined Diehm & Sons in 1997

Areas of Specialty:  
Storm Water Management, Floodplains, Erosion Control, Project Management
Licensed Professional Engineer in Pennsylvania since 1999
Director of Engineering since December 2010

Education:  
Bachelor of Science – Civil Engineering
Temple University

Community Involvement:  
Member, Mount Joy Mennonite Church

Associations: 
American Society of Civil Engineers


Douglas J. Herr, P.L.S.

Douglas J. Herr, P.L.S.
Director of Surveying

Joined Diehm & Sons in 2003

Areas of Specialty:
Boundary and/or topographic surveys including, but not limited to farms, schools, homeowners, commercial and industrial; Storm Water Management
Director of Surveying since June 2015

Education:
Associates Degree – Applied Science in Surveying Technology
Pa. College of Technology


Eric Keiser
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Eric Keiser
Director of Technology

Joined Diehm & Sons in 1999

Areas of Specialty:   
High detail 3D Surveying & Mapping; GPS management, network design and post processing; trouble shooting problematic surveying & mapping scenarios; surveying service to external engineering and architectural clients; survey project management; ACSM/ALTA Surveys

Management of technologies associated with the modern engineering business; technology procurement, trouble shooting, process development and training; network administration and CAD management

Education:
Bachelor of Arts – Anthropology
State University of New York - Stony Brook

Graduate classes
Penn State University

Educational Seminars
Pennsylvania Society of Land Surveyors & Maryland Society of Surveyors

Community Involvement:   
Vice President,  Vaccine Farm Inc. (Current)
Vice President, Marietta Restoration Associates (Current)
Chairman, Marietta Borough Planning Commission (Former)
Board of Directors, Marietta Community House (Former)
Board of Directors, Rivertowns PA USA (Former)
Volunteer, American Red Cross (Former)


Ted Cromleigh

Ted Cromleigh
Project Manager

Joined Diehm & Sons in 1987

Areas of Specialty:
Boundary and/or topographic surveys including, but not limited to farms, schools, homeowners, commercial and industrial; Project Management; Sewage Planning including alternative methods of sewage disposal, and DEP permitting

Community Involvement:
Chairman, Heidelberg Township Planning Commission


Tom Mattesonlinkedin Tom Matteson
Project Manager

Joined Diehm & Sons in 2006

Areas of Specialty:
Project Management, Site Design, Zoning

Education:
Associates Degree – Specialized Technology
National Education Center

Community Involvement:
Member, Warwick Township Zoning Hearing Board
Member, Lancaster Evangelical Free Church


David MeaseLinkedin David A. Mease, P.E., S.E.O.
Project Manager

Joined Diehm & Sons in 2013

Areas of Specialty:
Licensed Professional Engineer in PA since 2009
Certified Sewage Enforcement Officer since 1994
Project Management, Site Design, Stormwater Management, Erosion Control, NPDES Permits, Soils Testing

Education:
Bachelor of Science – Environmental Resource Management
Pennsylvania State University

Community Involvement:
Member, Crossway Church, Mohnton PA
Board Member, The Educators Affiliation of Christian Homeschoolers (TEACH)
Volunteer, Trail Life USA


Jennifer Gerhart Jennifer B. Gerhart
Office Manager

Joined Diehm & Sons in 2011

Education:
Bachelor of Science – Elementary & Special Education
Millersville University


Matt Eckenrode Matt Eckenrode, S.I.T.

Joined Diehm & Sons in 2013

Areas of Specialty:
Boundary and/or topographic surveys including, but not limited to farms, schools, homeowners, commercial and industrial; Construction surveying (stake-out)

Education:


Andrew Adams Andrew Adams, S.I.T.

Joined Diehm & Sons in 2014

Areas of Specialty:
Boundary and/or topographic surveys including, but not limited to farms, schools, homeowners, commercial and industrial; Construction surveying (stake-out)


Education:
Associates Degree - Applied Science in Surveying Technology
Associates Degree - Applied Science in Civil Engineering Technology
Pennsylvania College of Techonology

Community Involvement:
Committee Member - Northumberland County Fair
Department Superintendent - Gratz Fair


John T. Diehm
Survey Technician

Joined Diehm & Sons in 2015

Areas of Specialty:
Boundary and/or topographic surveys including, but not limited to farms, schools, homeowners, commercial and industrial; Construction surveying (stake-out)

Education:

Community Involvement: