Your Guide to Safe Digging in Ohio

Excavator Manual and Universal Marking Standards

Excavator Manual

The OHIO811 Excavator Manual and Universal Marking Standards outlines procedures for planning, notifying, marking, and digging near underground utilities. This guide provides critical safety information, including:

  • Material Types & Abbreviations
  • Tolerance Zone
  • Positive Response
  • How to notify OHIO811

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Download Your Free Copy:

Reviewed by Ohio’s Damage Prevention Councils (DPCs), the Manual equips excavators with the knowledge and protocols to dig safely and legally while keeping Ohio’s underground infrastructure protected.

Ohio Revised Code 3781.29(C)(2): “All underground facilities shall be marked in accordance with the Ohio Universal Marking Standards that are on file with the Ohio Utilities Protection Service…”