In 1988, the Louisiana Damage Prevention Law became effective. This law requires excavators and demolishers to call a regional notification center at least 48 hours before they begin their work.

It talso requires owner/operators of underground facilities to mark locations or supply information that will enable excavators and demolishers to locate underground utilities and facilities.

At the time the law passed, a non-profit notification program called DOTTIE (Dial One Time To Inform Everyone) had already been at work protecting vital underground facilities for more than a decade.

Today that program is known as Louisiana One Call™