CARSON, Calif. — Attorney General Kamala Harris and the Federal Trade Commission announced today that they have approved Tesoro’s $2 billion acquisition of a BP refinery in Carson.

Harris said the agreement she reached with Tesoro and BP would preserve jobs, ensure environmental retrofitting of the facility and protect from spikes in gas prices.

“These commitments will protect jobs for potentially thousands of Californians, ensure that California’s oil and gas markets remain competitive for years to come and lead to a reduction in greenhouse gases and emissions,” Harris said.

Tesoro plans to combine the operations of the Carson plant its existing Wilmington plant, but Harris said the state’s approval of the sale will preserve more than 1,000 jobs at the Wilmington refinery. It also calls for monitoring of gas pricing, volume and refinery capacity. It also includes requirements to safeguard against price spikes from refinery outages, according to Harris’ office.

The agreement also calls for an environmental retrofit of both refineries to reduce greenhouse admissions.