Low-flying helicopters over Davis tonight and Thursday are part of a Pacific Gas and Electric Co. survey to check for natural gas leaks by air.
The 3-day project includes controlled natural gas releases, according to the city of Davis, with PG&E crews handling the releases on the ground. The helicopters, equipped with leak detection technology, could be flying in the 200 to 1,000-foot range.
Dateline at UC Davis reported that one of release sites is near the east end of Arboretum Drive, between the Union Pacific Railroad tracks and Interstate 80.
Aircraft involved in the operation will also go over Solano County.