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When you call 811, make sure you have the following information handy:

• Address where the digging or excavating will be done (including the county name)

• Lot number (if new subdivision or development)

• Directions to the property (including the closest street or road intersection)

• Extent of work to be done

Your local 811 call center will then contact the your gas and propane providers and other member utilities companies in your area. Representatives from these member companies will come to your location to measure and mark their lines or tanks for you.

Know How to Decode the Colored Flags

When utility company representatives mark the location, they will use colored flags and/or paint to identify the type of underground service:

Yellow–Gas, oil, steam, petroleum or gaseous materials
Red–Electric power lines, cables, conduit and lighting cables
Orange–Communication, alarm or signal lines, cables or conduit
Blue–Potable water
Purple–Reclaimed water, irrigation and slurry lines
–Sewers and drain lines
Pink–Temporary survey markings
White–Proposed excavating

What to Do in an Incident

If you accidentally come in contact with a line or storage tank, and cause minor damage such as a dent, gouge, scratch or break in coatings, call the appropriate utility with the type and location of the damage. Please allow the gas company time to repair the line or tank. If the contact results in a release of gas, please call the appropriate utility and 911.

For More Information

For details about 811, the national call before you dig number, visit .

Maryland residents and contractors can learn more about Miss Utility at or by calling 1-800-257-7777. Virginia residents and contractors can call 1-800-522-7001 or visit .