The latest update (December 2021) of the OHIO811 Excavator Manual can be found at https://www.oups.org/wp-content/uploads/2022/03/OHIO811_Excavator-Manual_Updated_-Watermark_Dec2021.pdf.
It includes changes that were approved through the Marking Standard Committee in 2021.
The changes were:
- A symbol for facilities greater than 36 inches. Page 29
- Best Practice Note: An 18-inch tolerance zone should be respected around all above ground infrastructure. Page 16
- Best Practice Note: Identifying markings such as facility owner, size and type shall not be used as a measuring point when establishing the tolerance zone of a buried utility. Page 16
- Additional material type FG, Fiber Glass. Page 39
Remember to contact OHIO811 before any excavation. It’s the law.