UULC Mission
To prevent all damage to underground utilities in our service area by providing the most efficient and cost-effective One Call Service.

UULC History
Utilities Underground Location Center (UULC) was started on July 31, 1978, by five Seattle area utilities: Pacific Northwest Bell (US West), Puget sound Power & Light (Puget Sound Energy), Washington Natural Gas (Puget Sound Energy), Seattle City Light, and King County Department of Public Works.

Initial service area of the UULC was King County, Washington. As of 31 July 2002, the UULC provides call before you dig service to 839 facility owners in Washington & Montana.

UULC Milestones
In October 2002, the UULC processed its 4 millionth locate request. In FY 01-02, UULC processed 306,447 requests in Washington & Montana.

UULC Call Center
The call center is operated by One-Call Concepts.