Kalispell, Montana

The Team
  • TD&H Engineering has been an integral part of the engineering community in the Flathead Valley since 1973. Since opening the office doors in 1973, TD&H Kalispell has been providing quality engineering services with a focus on client satisfaction to a diverse range of public and private clients. TD&H Engineering has repeatedly demonstrated our ability to rise to the challenge…to go beyond what is expected by seeking creative, functional solutions for our clients. We have a full-time staff to provide engineering design, surveying, construction management and inspection, and material testing services.

    • Street, Roadway, and Stormwater System Design
    • Water and Wastewater System Design
    • Site Development
    • Land Surveying and Mapping
    • Commercial and Residential Site Planning
    • Geotechnical Engineering and Soil Stabilization
    • Environmental Site Assessments
    • Construction Surveying
    • Construction Contract Administration
    • On-site Construction Management and Inspection
    • Construction Materials Testing
  • TD&H Engineering
    Kalispell Regional Office
    450 Corporate Drive, Suite 101
    Kalispell, Montana 59901
    View Google Map 

    Monday – Friday 8:00am – 5:00pm

    Phone (406) 751-5246
    Fax (406) 752-5230

    Email Us

  • Douglas A. Peppmeier, P.E. & Principal
    Vice President/Regional Manager

    Doug is a civil engineer and the Regional Manager of the TD&H Engineering Kalispell office.  As the Regional Manager, he is responsible for overseeing all engineering services from initial client contact through final construction.  Doug has been with TD&H Engineering since 2007 and prior to that was a project engineer for a private consulting engineering firm in Portland, OR.  His work experience includes residential, commercial and industrial land development, water, stormwater and wastewater system design, municipal permitting, urban street and county roadway design, public involvement, construction administration, and client liaison.

    Joe Bushong, E.I.
    Engineer - Civil

    Joe Bushong is a Civil Engineer Intern working at our Kalispell, Montana office.. He graduated from Boise State University in 2013 with a Bachelor’s of Science Degree in Civil Engineering. Through past internships and during his time with TD&H Engineering, Joe has gained experience in: Utility Leak Detection, Project Management, Structural Engineering Design, Construction Materials Testing (CMT), CMT Data Management, Construction Surveying, Structural Site Inspecting, Construction Site Inspection, Project Engineering, and Geotechnical Investigation. In addition, Joe is ACI certified as a concrete field testing technician grade 1 and possesses his nuclear gauge training and hazmat certifications. Joe is also proficient with the following engineering modeling software: ENERCALC, basic AutoCad Civil 3D, and basic Math CAD.

    Terry Stonehocker, P.E.
    Engineer - Geotechnical

    Terry is a construction inspector and geotechnical engineer and has been with TD&H Engineering since 1993.  During his time with TD&H he has served as a surveyor, laboratory technician, inspector, engineering technician, and geotechnical engineer.  He is a licensed engineer in Montana has extensive experience in the areas of materials testing and construction inspection.

    Wil Goodpaster, E.I.
    Engineer - Civil

    Wil is a Civil Engineer E.I.T. for the Kalispell, Montana regional office. He graduated from Washington State University in 2011 with a Bachelor’s of Science Degree in Civil Engineering. Wil’s professional career started in construction engineering with Kiewit Infrastructure West Co. on several projects across Washington and Alaska. There he gained valuable knowledge for heavy civil operations, water treatment, environmental management and contract administration. Wil Continued his heavy civil career with Traylor Bros., Inc. as the pre-construction survey and geotechnical instrumentation engineer on the Purple Line Subway Extension Project in Los Angeles, CA before moving to Kalispell and joining the TD&H Team.

    Ron Gardner
    Professional Land Surveyor

    Ron is the survey party chief of the Kalispell office and has been with TD&H Engineering since 1992.  His work experience includes construction inspection, testing and monitoring in addition to surveying.  He is registered in Montana and has a variety of experience in boundary, topographic, construction and engineering surveys.

    Rick Swan
    Professional Land Surveyor

    Rick is the Survey Manager of the Kalispell office and has been with TD&H Engineering since 1984.  His work experience includes boundary surveys, topographic site mapping, right-of-way surveys, and construction staking of municipal infrastructure and building projects.  He also provides survey research, survey calculations, property descriptions, AutoCAD design basemap preparation, construction staking, and right-of-way surveys as needed.  He is experienced in the use of GPS, AutoCAD, and Carlson survey software.

    Doug Kauffman
    Drafting Manager

    Doug is the head of Drafting/Design for the Kalispell office and has been with TD&H Engineering since 1998.  His primary areas of professional expertise are plan development, design and project administration.  These facets of Mr. Kauffman’s expertise are well grounded in previous experience which includes but is not limited to subdivision and platting, surveying calculations, materials testing, construction inspection and computer aided drafting and design.

    Laurie Happ
    Administrative Assistant

    Laurie is the administrative assistant for the Kalispell regional office and has been with TD&H Engineering since 2006. In addition to being the first person to greet you at the Kalispell office, she is also responsible for all office administrative needs including project billing coordination.

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