Professional Land Surveying


Control Target

Control Target

Plisga & Day sets control points or baselines for a wide variety of projects. The control monuments may be simple nails for short turnaround building, road and construction projects or more permanent buried concrete or stone for city wide control, landfill monitoring or dam deformation studies. The control information can be coordinated and shared with contractors for their own work with aerial photography, LIDAR flights, construction layout or machine control.


  • Photogrammetric
  • Machine Control File and Base Point Coordination
  • LIDAR Base Station and Ground Truthing
  • Horizontal & Vertical Networks
  • State Plane Coordinate Determination
  • GIS / LIS Data Collection
  • Ground Truthing for Remote Sensing
  • Typical GPS Vectors for a Photo Control Network

Aerial View

The following are some typical control projects Plisga & Day has performed:

  • The City of Waterville, Maine hired Plisga & Day to set permanent control monuments and semi-permanent monuments throughout the City for all future projects to tie into. Northing, Easting and Elevation were published for all monuments.
  • Permanent control for aerial photographs was set around pulp wood piles at Champion International Paper in Bucksport, Maine. These permanent targets were set on steel posts in cement and painted white for visibility on all future flights.
  • Permanent control for aerial photographs was set at Pine Tree Landfill Facility in Hampden, Maine for monitoring the landfill volume.
  • Latitude and longitude was calculated for several control points set at the United States Coast Guard Station in South Portland, Maine.
  • Ground truthing for aerial photographs around gravel pits to assist photogrammetrists in computing volume estimates.


Plisga & Day was incorporated in 1978 by Stanley J. Plisga and Richard A. Day to provide traditional land survey services. Since its founding Plisga & Day has grown into the information age by using the latest in technology and computers. Technology and commitment to quality records have extended Plisga & Day from a land service organization into a digital information product center. Plisga & Day is capable of assisting you in all your land service needs present and future.


Contributing to the success of Plisga & Day is the unique professional to support staff ratio, assuring a high degree of professional input into any service or product provided. Equally contributing to our success and reputation are the loyalty, dedication, work ethic, and motivation exhibited by our employees. Historically, this has produced outstanding service to our clients.


Surveying services vary depending on client requirements and project parameters. For example, Plisga & Day uses national standards for projects when appropriate such as when commercial clients are using national lenders. Plisga & Day strives to provide quality work that is appropriately taylored to the task at hand.

Feel free to review or download PDF versions of the state and national standards we use here at Plisga & Day.