40-8 Preparation
D20x22 Series II Navigator HDD
U
NDERGROUND
U
TILITY
C
ONTACT
Before you start any digging project, do not forget to call the local One-Call system in your area and any utility
company that does not subscribe to the One-Call system. For areas not represented by One-Call Systems
International, contact the appropriate utility companies or national regulating authority to locate and mark the
underground installations. If you do not call, you may have an accident or suffer injuries; cause interruption of
services; damage the environment; or, experience job delays.
The One-Call representative will notify participating utility companies of your proposed digging activities.
Utilities will then mark their underground facilities by using the following international marking codes:
OSHA CFR 29 1926.651
requires that the estimated location of underground utilities be determined before
beginning the excavation or underground drilling operation. When the actual excavation or bore approaches an
estimated utility location, the exact location of the underground installation must be determined by a safe,
acceptable and dependable method. If the utility cannot be precisely located, it must be shut off by the utility
company.
WARNING:
Electricity or gas explosion can kill. Laser light in cut cable can result in
eye damage.
Locate utilities before drilling. Call 811 (U.S. only) or 1-888-258-0808 (U.S. or Canada)
or local utility companies or national regulating authority.
Red
Electric
Green/Brown
Sewer
Yellow
Gas, Oil or Petroleum
White
Proposed Excavation
Orange
Communication, Telephone, TV
Pink
Surveying
Blue
Potable Water
