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Using Global Positioning System (GPS)

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Excavators submitting a locate request have the option to provide latitude and longitude coordinates from Global Positioning System (GPS) units for their excavation projects in lieu of section grid information. 

Many excavators will find that taking a GPS reading at their jobsite and supplying this specific information when submitting a locate request is easy and can be more affordable than purchasing multiple maps throughout the state.  In addition, this will give excavators an opportunity to white-line their jobsite prior to submitting their locate request.

JULIE's GIS Specialist, Burt McAlpine is available to assist you.  You can contact Burt at 636-586-0315 or mcalpine@illinois1call.com. 

Size of Excavation
Using GPS coordinates is appropriate for single property excavations only.  If your project encompasses a large area, you will need to provide the section/quartersection numbers for your project.

Standard of Datum
Basic GPS unites are affordable and capable of simple functions.  JULIE accepts GPS data in the following formats: 

• NAD83 (North American Datum 83)
• WGS84 (World Geodetic System)
• Decimal Degrees (DD.DDDDDD)
• Degrees Decimal Minute (DD MM.MMMM)
• Degrees Minutes Decimal Seconds (DD MM SS.SS)

Setting Your Unit
Since each unit is different, we recommend that you contact your vendor and ask them for assistance in setting your equipment to the appropriate datum.