Pacific Gas & Electric has completed 25 miles of underground power lines in California's Lebec area, a fire-prone stretch along Interstate 5, as part of a project aimed at reducing wildfire risk and limiting outages during extreme fire weather. Pacific Gas & Electric says the burial work along I-5 is complete, and KBAK/KBFX reported that the new equipment is expected to enter service by September, after final steps are completed. What's happenin…