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Chapter 13 Control Survey Procedures

Chapter 13 Control Survey Procedures

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Monuments shall be constructed to ensure permanency. Monument type shall be chosen to suit the local conditions. Acceptable monuments are as follows: • NGS class B rod marks. See NOAA Manual NOS NGS 1, Geodetic Bench Marks. • Existing NGS monuments in good condition and equal to or exceeding the permanency provided by class B rod marks.

  Monument

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