Providing Quality Professional Services since 1999

Our staff at DEM consists of individuals devoted to providing quality professional services to all of our clients. Continuing Education courses are attended frequently to keep abreast of new developments in technology. Memberships are currently maintained in various professional organizations such as:

Pennsylvania Society of Land Surveyors (PSLS)
National Society of Professional Surveyors (NSPS)
American Congress on Surveying & Mapping (ACSM)
Brookville Area Chamber of Commerce (BACC)
National Federation of Independent Business (NFIB)

Key field personnel are certified with EPA 40-Hour Basic Health & Safety Training complying with 29 CFR 1910.120(e)(3)(I) for work on sites that may be classified as hazardous, including Superfund Sites. In addition, and in part to comply with DOT regulations regarding survey work on natural gas pipelines, our office participates in a Drug & Alcohol testing program. In addition to required commercial or business insurance coverage's, D.E.M. carries Professional Liability Insurance.

Opened in June 2006, our new professional office building provides ample free parking to clients. We are conveniently located on the edge of Historic Brookville and just south of Interstate 80, Exit 81. The accompanying photos will provide a quick glimpse or view of our office, but we invite you to stop bye, meet with our staff, and determine if our Professional services are right for your project.


From the creative landscaping to the faux brick sidewalk, our office blends well with the surroundings and charming atmosphere of the Brookville community.

Clients and guests are greeted at the reception area.

Our CAD room is a large open area with a cathedral ceiling to accommodate several drafters (and a large bull elk !). With conventional drafting tables and modern computer workstations, projects may be completed efficiently while in a convenient and pleasant environment for our employees.

The conference room is a great place to review new projects, unroll large maps, and hold larger meetings. private20office A small, professionally decorated office is available for private meetings with clients.

A fleet of four wheel drive vehicles, each equipped with automotive GPS and stocked with necessary field equipment and supplies are available.


An ATV and trailer can also be used for remote field projects, making our work more efficient.

We have a small boat and trailer available for hydrographic projects or sites only accessible by water.

A quality metal detector is invaluable in locating buried markers

Points are located using an electronic Total Station and field data is stored on a data collector or in a field book. In the office, this data is downloaded directly to a computer for calculations and CAD plotting.

A prism assembly attached to the top of a prism pole enables measurements from the Total Station to nearly all points located during a typical survey traverse.

Our crew has experience on construction stake-out projects of all sizes, including multi-million dollar developments. Here, key points are located in the building footers for a mason who is rapidly approaching.

Our 3-receiver GPS Survey system offers high productivity with 0.5 cm accuracy (static). This powerful stand-alone system can be used along with conventional survey instruments to provide additional capabilities.

Our GPS Pathfinder® ProXH™ receiver delivers subfoot (30 cm) accuracy with Trimble's revolutionary H-Star™ technology, and with a Zephyr™ antenna, accuracy is 8 inch (20 cm). With a Bluetooth® wireless connection we're cable free between the ProXH receiver and field computer. Field data from the Trimble Recon™ handheld is postprocessed back at the office with GPS Pathfinder Office software.

For certain mapping or GIS projects, a backpack assembly makes collecting field data easier and more efficient. 

Our most important asset is our staff!

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