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Our purpose is to provide an easy-to-use on-line form and related tools for stakeholders to share essential detail about underground damage or near-miss incidents for use in determining root causes, which will be evaluated and used to focus and promote underground damage prevention education and training efforts.

About California 811

California Government Code section 4216.6 g & h calls for operators and excavators to provide information about “incident events” using the California Regional Common Ground Alliance Virtual Private Damage Information Reporting Tool. Incident events are excavator downtime, damages, near misses and violations. Each calendar year’s incident events must be reported by March 31 of the following year.

Reporting is accomplished by inputting your data in a web-based form or electronic data exchange using xml or an automated data loader.

Begin reporting your incident events today. It’s part of the law!

2016 Annual Report

CGA has released the 2016 DIRT report as of October 2017. Please visit to download the report or supplementary data.