The Tolerance Zone
Top Story
In a dense urban neighbourhood, an excavator makes a rash decision to perform a 30-m bore shot without obtaining locates, which results in an 8-in. natural gas line puncture.
This poor decision sets off a cascade of events. The loud hissing sound signals the release of gas into the air.
Insight Meets Innovation
Oakville Enterprises Corporation
OEC is driven to deliver value for our customers, providing turn-key services of utility engineering, asset management, utility locates, meter reading, GIS mobile and aerial mapping, utility construction and more. Visit our website at for additional information.
Learn More
The ORCGA will now be offering and organizing DPT Training for its members using the new smaller class format and will also post tentative dates and locations on the website based on demand and location. All course information will be communicated here:
This is your opportunity to hear directly from:
  • Ministry of Labour - Excavation Safety and Regulatory Compliance
  • Technical Standards and Safety Authority (TSSA)
  • Ministry of the Environment, Conservation and Parks (MECP) – Excess Soil Regulation
  • Electrical Safety Association (ESA) – Powerline Safety - STOP LOOK LIVE
  • Ontario One Call (OOC) – Digging Safe with Ontario One Call
  • Centre for Advancement of Trenchless Technologies (CATT) – A Greener Future with Trenchless Technologies
  • The Infrastructure Health and Safety Association (IHSA) – What is the Health and Safety Excellence Program?
  • Ontario Regional Common Ground Alliance (ORCGA) –Safe Excavation Training Program, The Damage Prevention Technician Program, The DIRT Report
DIRT Reporting
The ORCGA Reporting and Evaluation Committee has performed an analysis of Ontario damages, events, and root causes, to assist the Damage Prevention industry in reducing the frequency and consequences of damages.
Enbridge Gas Inc.
DTS Technical
Ontario One Call’s New Web Portal
Ontario One Call Limited®
Ontario One Call is re-creating our Web Portal to improve the process of submitting Locate Requests! 
The brand new EASY TO USE platform will be launching January 2022 and includes request options for different users, easy to submit design and planning requests for Excavators, and changes to the map functionality.
Be sure to check out the new platform and request your locates online.
Industry News
Source:  multiVIEW
Each day, Utility Locators face a number of hazards, in doing the important work they do to keep our communities safe from excavation damages.
Source:  Ontario One Call
Before attempting to clear a sewer blockage beyond the outside walls of a building, Ontario One Call reminds everyone to “Call Before You Clear” to arrange a free emergency sewer safety inspection to avoid the danger of a natural gas leak or explosion.
PGC Services
Vivax Canada
Source:  Underground Construction
For utility construction, vacuum excavators have two primary uses: removing drilling fluid from job sites and potholing to visibly confirm locations of existing utilities.
Source:  Unearth Labs
Utility companies are facing two difficult challenges: a massive, aging infrastructure and a legacy workforce set to retire within the next decade.
A & J Vacworx Inc.
Cansel Survey Equipment
Source:  Sundex Inc.
Utility Contractors have a unique set of requirements when managing their work. Every utility contractor has an accounting system or ERP but these systems do not handle the field work the way a utility contractor operates requiring a manual system to fill the gap - spreadsheets or paper files.  SunWorx is a system that fills this gap.
Source:  Vivax-Metrotech
Vivax Canada introduces innovative tools for locating buried utilities assuring damage prevention.
Technoconsor Inc
Vermeer MV Solutions
Source:  Pocket Worthy
Nearly 80 years ago, a construction standstill derailed the subway’s progress, leading to its present crisis. This is the story, decade by decade.
Source:  APS News/YouTube
When the Tacoma Narrows Bridge over Puget Sound in the state of Washington famously collapsed on November 7, 1940, it was captured on film for posterity.