Have you ever heard of a LACT unit? Learn more from Clint Anthony, BLM Petroleum Engineering Technician. Did you know? BLM California manages nearly 600 producing oil and gas leases covering more than 200,000 acres. Between 80% and 90% of all surface-disturbing activities related to oil and gas activities occur in the San Joaquin Valley on public lands administered by Central California District, Bakersfield Field Office. More than 95% of all Federal drilling occurs in established fields within